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PT500 User`s Guide - Greyline Instruments

1. mami mami mawizara 38 3 7 5 How to convert the measured current to flow rate iii 39 3 7 6 How to turn the pulse output OFF ON i 40 3 7 7 Pulse output signal calibration ii 40 38 Printing Lira sini laid GL iaia 40 3 8 1 How to print logged data using the RS232 printer 40 3 8 2 How to print logged data using the Bluetooth printer 42 4 Maintenance amp Repair eescceeeecneeeeeeaaeeeeeeaaeeeeeeaaeeeeeeaaeeeseeaaeeeeeeeaaeeeeeeaaeeeeeeaeeeene 45 5 Troubleshooting 46 Bt NEW Ia 46 5 2 General Troubleshooting Procedure i 47 5 3 Warning amp Status Messages 48 5 4 TestBlock oaiea iaia alii alata 51 5 5 Microprocessor Reset Facility ui 51 5 0 Diagnos cs Display telai ata 52 5 7 Applications Hotline riisiviinaa nE a 53 5 8 Product Return PI iii a 54 5 9 Waraniyi cena ila 55 6 Appendix A Specifications ai ea 56 Page 5 www greyline com GREYLINE instruments inc 1 1 1 General Description Introduction This manual describes the operation of the Greyline Portaflow PT500 portable flowmeter The flowmeter is designed to work with clamp on transducers to enable the flow of a liquid within a closed pipe to be measured accurately without needing to insert any mechanical parts through the pipe wall or protrude into
2. 13 The Portaflow PT500 s serial number should now appear in the HyperTerminal window This proves that the link is working 3 7 2 How to set up a USB connection In order to use a USB connection you must first install the special USB driver as detailed in Paragraph 2 3 This will set up a virtual port through which the Portaflow PT500 can communicate When you make the connection with the computer use the same technique as described above for setting up an RS232 communications session through HyperTerminal But in this case when you are asked to select a Com Port choose the virtual port set up by the driver installation Once this is done provided the Portaflow and computer communications protocols are set to the same values Handshaking Start bits Stop bits Parity etc the two devices should be able to communicate in the same manner as described for the RS232 3 7 3 How to turn the 4 20mA output OFF ON 1 With the instrument operating in the FLOW 4 20 mA OUTPUT DD MM YY HH MM SS READING mode press the 4 20mA function key 4 20 mA O P is ON Dim mm This will access the 4 20mA OUTPUT screen mA Output Reading 0 00 Output Range 4 20 2 The ON OFF status of the 4 20mA output is shown Units min on line 2 of the display Flow at max output 0 00 Flow at min output 0 00 3 To change the ON OFF status select Output Range Output mA for error 22 00 and press ENTER Page 37 www greyline com G
3. OOoOoo 8g Minimum Write Timeout msec Disable Modem Ctrl At Startup Figure 2 4 Com Port configuration In the BM Options area change the Latency Timer value from 16 msec default to 1 msec Select OK to implement the change and then close the remaining windows that were opened Your computer should now be able to communicate with the Portaflow PT500 instrument via the USB port in the same way as any other standard USB device Page 15 www greyline com GREYLINE instruments inc 3 Operating Procedures Initial instrument setup Paragraph 3 1 Battery charging Set date time Language Backlight Connect and take basic flow readings At a one off location At a frequent location Manage site details Paragraph 3 2 Paragraph 3 3 Paragraph 3 4 QUICK START VIEW EDIT SITE DATA Set up a named site Rename a site Enter data Choose site check data y Y Attach sensors Attach sensors Y FLOW READING FLOW READING Carry out any necessary calibration Paragraph 3 5 How to adjust the Zero Flow Offset Paragraph 3 5 2 How to adjust the Calibration Factor Paragraph 3 5 3 How to adjust the Roughness Factor Paragraph 3 5 4 How to adjust the Damping Factor Paragraph 3 5 5 Set up a monitoring or logging application Configure the interfaces Paragraph 3 6 Paragraph 3 7 How to measure totalised flows Paragraph 3 6 1 RS232 set up Paragraph 3 7 1 How to set up basi
4. i 18 3 2 Using the Quick Start MENU eee aeeeeaaeeeeeeeeceaeeseaaeseeeeeseaeeesiaeeeeaaeeeenees 18 3 3 Using the System at a Regularly Monitored Location nenen nnne 21 3 4 Managing Named Sites ie 23 3 4 1 Setting up a new site 23 3 4 2 Changing a site Name iii 24 3 5 Instrument Galibrationi ria dellla pennino 25 3 5 1 Adjusting the Zero CUtoff kaaa 25 3 5 2 Adjusting the set zero flow offset iii 25 3 5 3 Adjusting the calibration factor mami wi mai 26 3 5 4 Adjusting the roughness factor i 26 3 5 5 Adjusting the damping factor mia 28 3 6 Performing Monitoring amp Logging FUNCTIONS i 29 3 6 1 How to measure totalised flows ManuallY ii 29 3 6 2 How to set up the basic logging application to memory 31 3 6 3 How to set up automatic timed logging mode i 33 Page 4 www greyline com GREYLINE instruments inc 3 6 4 How to log directly to a PC 34 3 6 5 How to download logged data to a PC i 35 3 7 Configuring the Portaflow PT500 Interfaces i 35 3 7 1 How to set up an RS232 connection i 35 3 7 2 How to set up a USB connection i 37 3 7 3 How to turn the 4 20mA output OFF ON iii 37 3 7 4 4 20mA signal calibration and ranging
5. 3 Select Vol per pulse and enter the required value In the example shown a pulse is produced every 10 litres of flow 4 Select a Pulse width in ms to suit the particular application e g electro mechanical counter Refer to the manufacturer s data sheet for the minimum pulse width 5 Select Exit and press ENTER to return to the FLOW READING screen 3 8 Printing Logged data can be printed using either an RS232 compatible printer or by wireless connection via the Bluetooth interface 3 8 1 Howto print logged data using the RS232 printer This procedure shows you how to set up and use the RS232 printer to print logged data Setting up an RS232 connection 1 Connect the Portaflow PT500 to the printer using the printer cable supplied This cable is fitted with a 9 way D Type plug terminated as follows Pin 1 N C No connection Pin 2 TxD data from Portaflow PT500 to printer Pin 3 RxD data from printer to Portaflow PT500 Pin 4 N C Pin 5 Signal ground Pin 6 N C Pin 7 N C Pin 8 N C Pin 9 N C Page 40 www greyline com GREYLINE instruments inc 2 Select Setup RS232 USB from the MAIN MENU This will access the SETUP RS232 USB screen shown here 3 Set the RS232 parameters to comply with those for the printer Note The parameters shown here are for the Seiko DPU 414 Thermal Printer SETUP RS232 USB DD MM YY HH MM SS Handshaking Baud Rate Data
6. 0 44 3 93 6 6 90 0 25 6 40 0 28 6 34 0 31 6 28 0 34 6 22 0 37 6 16 0 40 6 10 0 43 6 04 125 250 8 9 05 0 27 8 51 0 30 8 45 0 33 8 39 0 36 8 33 0 39 8 27 0 42 8 21 0 45 8 15 10 11 10 0 39 10 32 0 32 10 46 0 35 10 40 0 38 10 34 0 41 10 28 0 44 10 22 0 47 10 16 12 13 20 0 31 12 58 0 34 12 52 0 37 12 46 0 40 12 40 0 43 12 34 0 46 12 28 0 49 12 22 14 15 30 0 33 14 28 16 17 40 0 34 16 36 18 19 50 0 35 18 44 1875 375 20 21 60 0 36 20 52 24 25 80 0 38 24 68 30 32 00 0 39 30 74 36 38 30 0 43 36 84 42 44 50 0 47 42 84 250 500 48 50 80 0 51 48 94 54 57 10 0 57 55 00 REDUCE I D BY DIMENSION SHOWN Page 60 www greyline com GREYLINE instruments inc Stainless Steel Hastelloy C amp Titanium Pipe pipe Pipe e 5S TOI Schedule 10 S a Schedule 40 S Schedule 80 S size o Pao T wat f ro TAEAE 1 i 920 083 1 315 1 185 1 1 660 1 530 1 1 900 1 770 A i 2 2 375 2 245 A 109 E 546 BE oj w oj E gt e r 2 2 2 875 2 709 3 3 500 3 334 Dr 3 2 4 000 3 834 120 4 500 4 334 120 5 563 5 345 134 6 625 6 407 134 8 407 8 329 148 i 5 165 12 156 180 14 i 188 16 i A 188 18 g 188 20 i A 218 22 i pr 218 24 i i 218 a 250 Pipe Pipe Schedule 60 Schedule 80 Schedule 100 Schedule 120 Schedule 140 Schedule 160 size O D I D WALL
7. 5 Select Send from the SETUP RS232 USB screen The printer should now start printing 6 The message screen will be displayed while printing takes place see next page 7 Printing will continue until all logged data is output or until the key is pressed Note The printer will continue printing until its print buffer is empty which may take a few minutes DD MM YY HH MM SS SETUP RS232 USB Send Exit SETUP RS232 USB DD MM YY HH MM SS Data is being downloaded on RS232 This screen will clear when download is completed Press to cancel Download 3 8 2 How to print logged data using the Bluetooth printer An Able Systems Ltd ASL Ap1300 BT Bluetooth compatible printer can be used to provide wireless printing within a range of 100m direct line of sight Note Greyline Instruments cannot guarantee compatibility with any other Bluetooth printer 1 Ensure the printer has sufficient paper then switch ON the printer 2 Select View Logged Data from the MAIN MENU This will display the VIEW LOGGED DATA screen shown 3 Select Choose from list of sites and select the site name for the log you want to print 4 When you are ready to begin printing the log select Download log 5 From the DOWNLOAD LOG screen select Bluetooth Printer This will open the SETUP RS232 USB screen shown below 6 Select Send This will initiate a wireless communications link between the Portaflow PT50
8. 12 000 375 11 750 500 10 750 1 000 12 250 250 12 090 330 11 938 406 14 14 000 13 250 375 13 000 500 13 500 250 13 376 312 13 250 i375 13 124 438 16 16 000 15 250 1375 15 000 500 15 500 250 15 376 i312 15 250 i375 15 000 500 18 18 000 17 250 375 17 000 500 17 500 250 17 376 312 17 124 438 16 876 562 20 20 000 19 250 375 19 000 500 19 500 250 19 250 375 19 000 500 18 814 593 22 22 000 21 250 375 21 000 500 21 500 250 21 250 375 21 000 500 24 24 000 23 250 375 23 000 500 23 500 250 23 250 375 22 876 562 22 626 687 26 26 000 25 250 375 25 000 500 25 376 312 25 000 500 28 28 000 27 250 375 27 000 500 27 376 312 27 000 500 26 750 625 30 30 000 29 250 375 29 000 500 29 376 312 29 000 500 28 750 625 32 32 000 31 250 375 31 000 500 31 376 312 31 000 500 30 750 625 34 34 000 33 250 375 33 000 500 33 376 12 33 000 500 32 750 625 36 36 000 35 250 375 35 000 500 35 376 312 35 000 500 34 750 625 42 42 000 41 250 375 41 000 500 41 000 500 40 750 625 Ductile Iron Pipe Standard Classes Size OUTSIDE Class Class Class Class Class Class Class CEMENT LINING INCH DIA 50 51 52 53 54 55 56 STD DOUBLE INCH WALL I D WALL I D WALL I D WALL I D WALL I D WALL I D WALL I D THICKNESS THICKNESS 3 3 96 0 25 3 46 0 28 3 40 0 31 3 34 0 34 3 28 0 37 3 22 0 41 3 14 4 4 80 0 26 4 28 0 29 4 22 0 32 4 16 0 35 4 10 0 38 4 04
9. Roughness factor Diagnostics Exit DD MM YY HH MM SS By averaging out the flow rate over several seconds the Damping factor can be used to smooth out rapid changes in flow rate to prevent wild fluctuations in the displayed flow value It has a range of 1 to 199 witha default setting of 10 With the system running in FLOW READNG mode 1 Press the Options key to access the FLOW READING OPTION screen shown 2 Scroll down and select Damping secs 3 Change the value of the Damping factor as required to remove any unwanted display fluctuations Increasing the value applies a greater smoothing affect 4 Press Enter to apply the change Vai Page 28 FLOW READING OPTION Data review Zero Cutoff m s Set zero flow m s Damping secs Totaliser Reset Total Reset Total Calibration factor Roughness factor Diagnostics Exit DD MM YY HH MM SS 0 00 0 00 10 Run Key Point If the damping factor is set too high the value displayed may appear stable but it may exhibit large step changes when the value is updated www greyline com GREYLINE instruments inc 3 6 Performing Monitoring amp Logging Functions 3 6 1 Howto measure totalised flows manually The basic measurement indicated on the FLOW READING screen is the instantaneous flow rate which in some applications may vary over a period of time Average flow rates are therefore often required in order to get a
10. cursor to move automatically Set Auto start et Auto sta Clear log Exit 14 If you want to change the value of the Y axis to VIEW LOG AS GRAPH DD MM YY HH MM SS improve the resolution of the graph press the Dim mm UP DOWN scroll keys The maximum values will 50 00 then increase decrease as appropriate Log Quickstart Point XXX XXX 15 To exit the VIEW LOG AS GRAPH screen and Value xx xx return to the REAL TIME LOGGER screen press dd mm yy hh mm ss ENTER 50 00 Monitoring the logged events at a later time 16 If you wish to monitor the logging progress at any time while you are operating in FLOW READING mode press the Logger function key as described above to switch to the REAL TIME LOGGER screen You can then select View log as text or View log as graph as required without interfering with the logging operation Stop logging 17 From the FLOW READING screen press the REAL TIME LOGGER DD MM YY HH MM SS Logger function key to access the REAL TIME 4 20mA O P is ON Dim mm LOGGER screen Unit l min Log name Quickstart 18 Select STOP NOW to cease logging Log data to Memory Note that the START NOW and STOP NOW Logging interval 10 seconds options toggle depending on which was last Start date amp time dd mm yy hh mm ss selected Stop date amp time dd mm yy hh mm ss 19 Select Exit to return to the FLOW READING MM DD HH MM SS screen Remaining time mm dd hh mm ss Memory Rollov
11. FLOW READING screen 3 7 5 Howto convert the measured current to flow rate Assume the maximum flow rate is Fmax l min and the minimum flow rate Fmin is 0 l min as shown Flow l min 0 16mA scale 0 20mA scale 4 20mA scale I MA To calculate the flow rate l min for a measured current I mA then 0 20mA 0 16mA 4 20mA x F F x F ASE nin _ U 4 x Fmax Emin Flow rate na min Pos Flow rate pa a Flow rate 16 Fain Page 39 www greyline com GREYLINE instruments inc 3 7 6 How to turn the pulse output OFF ON 1 With the instrument operating in the FLOW PULSE OUTPUT DD MM YY HH MM SS READING mode press the Pulse function key to Pulse output is ON Dim mm access the PULSE OUTPUT screen Flow units litres Output Off 2 A Pulse output is ON message appears in the Vol per pulse 10 00 second line of the display Pulse width ms 10 Exit 3 Select Exit and press ENTER to return to the FLOW READING screen 3 7 7 Pulse output signal calibration 1 With the instrument operating in the FLOW PULSE OUTPUT DD MM YY HH MM SS READING mode press the Pulse function key to Pulse output is ON Dim mm access the PULSE OUTPUT screen Flow units litres Output Off 2 To change the flow measurement units select Flow Vol per pulse g 10 00 units and press the required units function key 7 Pulse width ms 10 8 9 Exit 3 7 7
12. I D WALL I D WALL I D WALL I D WALL ID WALL 840 546 147 466 a 1 050 742 154 614 1 1 315 957 179 815 1 1 660 1 278 191 1 160 1 1 900 1 500 200 1 338 2 2 375 1 939 218 1 689 2 2 875 2 125 3 3 500 2 624 3 2 4 000 4 500 3 624 438 3 438 531 5 563 4 563 500 4 313 625 6 625 5 501 562 5 189 718 8 625 7 813 406 7 625 500 7 439 593 7 189 718 7 001 812 6 813 906 10 750 9 750 500 9 564 593 9 314 718 9 064 843 8 750 1 000 8 500 1 125 12 750 11 626 562 11 376 687 11 064 843 10 750 1 000 10 500 1 125 10 126 1 312 14 000 12 814 593 12 500 750 12 126 937 11 814 1 093 11 500 1 250 11 188 1 406 16 000 14 688 656 14 314 843 13 938 1 031 13 564 1 218 13 124 1 438 12 814 1 593 18 000 16 500 750 16 126 937 15 688 1 156 15 250 1 375 14 876 1 562 14 438 1 781 20 000 18 376 812 17 938 1 031 17 438 1 281 17 000 1 500 16 500 1 750 16 064 1 968 22 000 20 250 875 19 750 1 125 19 250 1 375 18 750 1 625 18 250 1 875 17 750 2 125 19 876 2 062 24 000 22 064 968 21 564 1 218 20 938 1 531 20 376 1 812 19 314 2 343 Page 61 www greyline com GREYLINE instruments inc Cast Iron Pipe ASA Standard Pipe Pipe Class Class Class Class Class Class Class 50 100 150 200 250 300 350 Size 0 D WALL I D WALL I D WALL I
13. Lined Pipes Epoxy Rubber Steel Plastic Pipe Dimension outside diameter Min 13mm Max 5000mm with D sensor set Pipe Wall Thickness 1mm 75mm Pipe Lining Applicable pipe linings include Rubber Glass Concrete Epoxy Steel Pipe Lining Thickness Omm 10mm Pipe Wall Temperature Range TRANSDUCER SETS Standard sensor operating temperature is 4 F to 275 F 20 C to 135 C Optional high temperature sensor operating temperature is 4 F to 392 F 20 C to 200 C Standard Temperature Range 4 F to 275 F 20 C to 135 C A ST standard 0 51 to 4 525 13 mm 115 mm pipe O D 2MHz B ST standard 1 97 to 78 74 50 mm 2000 mm pipe O D 1MHz D 1500 mm 5000 mm pipe O D Temperature Range 4 F to 176 F 20 C to 80 C 0 5MHz Page 56 www greyline com GREYLINE instruments inc High Temperature Temperature Range 4 F to 392 F 20 C to 200 C A HT High Temp 0 51 to 4 525 13 mm 115mm pipe O D 2MHz B HT High Temp 1 97 to 78 74 50 mm 2000mm pipe O D 1MHz Improved DATA LOGGER Data Logged Log application details flow rate Logs data selected in setup e g gals USgals m units may be changed at time of download by selecting the corresponding unit on the keypad No data points 98K Time Stamping No Sites All data points are
14. e Leg Port Settings 5 Click on OK 6 The Portaflow Download Terminal settings will Bits per second 38400 x now be saved i Data b s 8 xj Note When you next start a HyperTerminal ai i session you can select the Portaflow Download oo terminal from the File gt Open menu rather than Stop bas li having to re enter the parameters a Flow control Hardware xi 7 The main HyperTerminal window BPortattow Downloader HyperTerminal BE will now become active note the connection name now shown in the title bar De 858 058 ef 8 Leave this window open while you configure the Portaflow PT500 s RS232 parameters Page 36 www greyline com GREYLINE instruments inc Configuring the Portaflow PT500 instrument 9 Select Setup RS232 USB from the MAIN MENU SETUP RS232 USB DD MM YY HH MM SS This will access the SETUP RS232 USB screen Dim mm shown here Handshaking i None Baud Rate 38400 10 Set the RS232 parameters as shown opposite Data Bits 8 a Stop Bits 2 Note The selected Baud Rate must also be Parity i None available on the receiving terminal New line i CR LF Printer test Exit Testing the RS232 connection 11 Ensure the Portaflow PT500 is portatiow Downloader Hyper Terminal Jo connected to the PC s serial port carnale Li baal Ae using the cable provided Oe 93 086 Greyline Instruments gt 12 In the SETUP RS232 USB screen 27 select Printer test
15. example it recommends type A ST A standard sensors operating in the Reflex mode spaced 32 2mm apart Take a note of these details Pipe wall material Mild Steel Lining material Sensor set A ST Sensor mode Reflex Fluid type Water Save current site amp read flow Delete this Site Download amp save current site Exit FLUID TEMPERATURE DD MM YY HH MM SS Enter Fluid Temperature C 5 00 F 41 00 Continue SENSOR SEPARATION Site MySite Pipe 58 00 mm Wall 4 00 Sensors A ST Reflex Temperature 10 00 C 50 00 F Set sensor separation to 32 2 mm Press to continue AV to select sens DD MM YY HH MM SS Note If you press ENTER before the transducers are fitted and connected to the instrument the instrument will detect a low signal strength and may indicate an ERROR condition Attaching and connecting the transducers 12 Fit the designated sensors to the pipe using the appropriate guide rails as described in Paragraph 2 2 Take great care to set the separation distance as accurately as possible 13 Connect the red and blue coaxial cables between the sensors and the instrument ensuring that the red connector on the instrument is connected to the upstream sensor Taking a flow reading 14 Once the transducers have been fitted and connected press the ENTER key 15 This will take you from the SENSOR SEPARATION screen to the FLOW READING
16. for the location of the software installation files for the new device Use the Browse button to select the path to the unzipped driver files and then click OK Follow the on screen instructions to install the driver At the end of the driver installation routine you must carry out a minor configuration change to the newly installed virtual com port The way in which you gain access to the com port set up window will vary depending on your operating system The following example applies to Windows XP Select Control Panel gt System to open the SYSTEM PROPERTIES window Click the Device Manager button to open the DEVICE MANAGER window Scroll down to the Ports region and you will find the new FDTI port installed e g USB Serial Port with a high port number Right click on the com port and select Properties From the PROPERTIES window select the Port Settings tab then click the Advanced button The ADVANCED SETTINGS window should open similar to that shown below Advanced Settings for COM COM Port Number USB Transfer Sizes Select lower settings to correct performance problems at low baud rates Select higher settings for faster performance Receive Bytes 4096 Transmit Bytes 4096 BM Options Miscellaneous Options Select lower settings to correct response problems Serial E cisti Latency Timer msec 16 Serel Printer Cancel If Power Off eno Event On Surprise Removal Minimum Read Timeout msec Set RTS On Close
17. the flow system Using ultrasonic transit time techniques the Portaflow PT500 is controlled by a micro processor system which contains a wide range of data that enables it to be used with pipes with an outside diameter ranging from 13mm up to 5000mm and constructed of almost any material The instrument will also operate over a wide range of fluid temperatures Easy to operate the Portaflow PT500 standard features are Large easy to read graphic display with backlighting e Simple to follow dual function keypad e Simple Quick Start set up procedure e 98k stored data points e Continuous signal monitoring e RS232 output e USB output Pulse output e 4 20mA 0 20mA or 0 16mA output e Rechargeable battery e Battery management e Diagnostics Volumetric flow rates are displayed in l h l min sec gal min gal h USgals min USgals h Barrel h Barrel day m s m min m3 h Linear velocity is displayed in metres or feet per second When operating in the Flow Reading mode the total volumes both positive and negative are displayed up to a maximum 12 digit number The flowmeter can be used to measure clean liquids or oils that have less than 3 by volume of particulate content Cloudy liquids such as river water and effluent can be measured along with cleaner liquids such as demineralised water Typical Portaflow PT500 applications include e River water e Seawater e Potable water e Demineralised water e Treate
18. the logging session Page 34 www greyline com GREYLINE instruments inc 3 6 5 How to download logged data to a PC Note To download logged data to a Bluetooth printer see Paragraph 3 8 This procedure describes how to download stored data to a PC It assumes that the Portaflow PT500 is already connected to the PC s serial port and that RS232 USB communication has been established as described in Paragraph 3 7 1 1 Access the MAIN MENU Note If this is done from the FLOW READING screen any logging currently taking place will be terminated 2 Select View Logged Data from the MAIN MENU VIEW LOGGED DATA DD MM YY HH MM SS Dim mm 3 Select Choose from list of sites and select the Choose from list of sites name of the site to download View log as text View log as graph 4 If you want to view the log prior to downloading it Graph Y axis max you can do so using the View log as text or View Download log log as graph options Clear log 5 When you are ready to begin downloading the log select Download log 6 From the DOWNLOAD LOG screen select USB or DOWNLOAD LOG DD MM YY HH MM SS RS232 then select Send from the subsequent Dim mm confirmation screen Select Serial port or printer amp press USB 7 The selected logged data is now downloaded to the RS232 PC Bluetooth Printer Exit 8 Upon completion select Exit to return to the VIEW LOGGED DATA screen 9 Onthe VIEW LOGGE
19. time stamped 20 sites No Data Points Per Site All free memory can be allocated to any site up to a max of 98 000 data points Programmable Logging Interval LANGUAGES 5 secs to 1hr Updating on screen the end time of memory remaining as sample units are selected At overflow overwrite old data or user selectable stop logging when memory is full Logged data downloadable to PC via USB cable or RS232 Transfer to Microsoft Windows or Greyline user compatible software package optional Standard Supported Languages English French German Italian Spanish Portuguese Russian Norwegian Dutch OUTPUTS NEW USB Interface Printer Terminal Supports USB 2 0 Full Speed 12Mbits sec mode USB software driver provided Serial RS232 C inc handshaking Analogue Output Resolution Alarm Currents Isolation Maximum Load 4 20mA 0 20mA 0 16mA 0 1 of full scale Any between 0 26mA 1500V Opto isolated 620 Ohms Pulse Output TTL Pulse Repetition Rate Pulse Width Max Current Number Available One open collector opto isolated digital output Up to 500 pulses sec depending on pulse width 500ms for 1 pulse sec 5ms for 100 pulses sec 150mA NEW WIRELESS CONNECTIVITY Bluetooth optional for use with printer only Range Class Bluetooth radio 100m range direct line of site Max RF Power 100mW Approva
20. to apply the change Diagnostics Exit 8 Select Roughness factor or Exit as required 3 5 4 Adjusting the roughness factor The roughness factor compensates for the condition of the internal pipe wall as a rough surface will cause turbulence and affects the flow profile of the liquid In most situations it is not possible to inspect the pipe internally and the true condition is not known In these circumstances experience has shown that the following values can be used Page 26 www greyline com GREYLINE instruments inc Pipe Material Roughness Factor Non ferrous metal Glass Plastics Light metal Drawn steel pipes Fine planed polished surface Plane surface eRough planed surface Welded steel pipes new eLong usage cleaned eLightly and evenly rusted eHeavily encrusted Cast iron pipes Bitumen lining eNew without lining Rusted Encrusted Page 27 www greyline com GREYLINE instruments inc With the system running in FLOW READING mode 1 Pressthe Options key to access the FLOW READING OPTION screen shown 2 Scroll down and select Roughness factor 3 Change the roughness factor according to the pipe material and condition as described above 4 Press Enter to apply the change 3 5 5 Adjusting the damping factor FLOW READING OPTION Data review Zero Cutoff m s Set zero flow m s Damping secs Totaliser Reset Total Reset Total Calibration factor
21. while you are operating in FLOW READING mode press the Logger function key as described above to access the REAL TIME LOGGER screen You can then select View log as text or View log as graph as required without interfering with the logging operation This is described in detail in procedure Paragraph 3 6 2 Page 33 www greyline com GREYLINE instruments inc Manually stop the logging session 11 The logging session will stop automatically at the programmed Stop date amp time 12 If you wish to manually stop logging earlier than programmed press the Logger function key to access the REAL TIME LOGGER screen then select STOP NOW to cease logging 13 Select Exit to return to the FLOW READING screen Note The logged data will remain stored in the instrument s memory and can be viewed at any time as described above 3 6 4 How to log directly to a PC Selection made during logging set up 1 Inthe previous procedures the logging data was routed to the Portaflow PT500 s internal memory where it was stored for later download to a PC printer However you could have sent it directly to the PC or printer for live data display by selecting RS232 in the Log data to option in the REAL TIME LOGGER screen 2 In order for this to work correctly the Portaflow PT500 must be connected to the PC and the RS232 USB link already established Swapping data destinations during a logging session REAL TIME LOGGER 4 20mA O P is
22. 0 and the printer before printing can commence This can take up to 10 seconds While attempting to establish the wireless communications link a number of status messages will be displayed see next page Page 42 DD MM YY HH MM SS Dim mm VIEW LOGGED DATA Choose from list of sites View log as text View log as graph Graph Y axis max Download log Clear log DD MM YY HH MM SS Dim mm DOWNLOAD LOG Select Serial port or printer amp press USB RS232 Bluetooth Printer Exit DD MM YY HH MM SS SETUP RS232 USB Send Exit www greyline com GREYLINE instruments inc Establishing communications default printer While communications are being established the following status messages are displayed 1 Initialising Bluetooth BT CONNECTION DD MM YY HH MM SS Initialising Bluetooth Checks for BT module fitted Connecting to printer Please wait 2 Configuring BT printer BT CONNECTION DD MM YY HH MM SS Configuring BT printer Configures the BT module parameters to operate with the ASL Ap1300 BT printer Connecting to printer Please wait 3 Connecting BT printer BT CONNECTION DD MM YY HH MM SS Connecting BT printer Looks for the ASL Ap1300 BT printer type and IP address Connecting to printer Please wait 4 Sending data to BT printer BT CONNECTION DD MM YY HH MM SS Sending d
23. Bits Stop Bits Dim mm Xon Xoff 1200 8 1 None CR LF Parity New line Printer test Exit 4 Ensure that the printer has sufficient paper is switched ON and ON LINE 5 To check that the Portaflow PT500 printer interface is operational select Printer test from the SETUP RS232 USB menu If the RS232 interface is working correctly the following message will be printed Greyline Instruments lt unit serial number gt If nothing is printed check that the RS232 parameter settings are correct for the printer and that the PT500 TxD and RxD signals are compatible with the printer s RS232 interface A gender changer may be required to swap the TxD and RxD signals Printing logged data 1 Select View Logged Data from the MAIN MENU This will display the VIEW LOGGED DATA screen shown 2 Select Choose from list of sites and select the site name for the log you want to print 3 When you are ready to begin printing the log select Download log 4 From the DOWNLOAD LOG screen select RS232 This will open the SETUP RS232 USB screen shown below Page 41 VIEW LOGGED DATA DD MM YY HH MM SS Dim mm Choose from list of sites View log as text View log as graph Graph Y axis max Download log Clear log DOWNLOAD LOG DD MM YY HH MM SS Dim mm Select Serial port or printer amp press USB RS232 Bluetooth Printer Exit www greyline com GREYLINE instruments inc
24. D WALL I D WALL I D WALL I D WALL I D 3 3 96 0 32 3 32 0 32 3 32 0 32 3 32 0 32 3 32 0 32 3 32 0 32 3 32 0 32 3 32 4 4 80 0 35 4 10 0 35 4 10 0 35 4 10 0 35 4 10 0 35 4 10 0 35 4 10 0 35 4 10 6 6 90 0 38 6 14 0 38 6 14 0 38 6 14 0 38 6 14 0 38 6 14 0 38 6 14 0 38 6 14 8 9 05 0 41 8 23 0 41 8 23 0 41 8 23 0 41 8 23 0 41 8 23 0 41 8 23 0 41 8 23 10 11 10 0 44 10 22 0 44 10 22 0 44 10 22 0 44 10 22 0 44 10 22 0 48 10 14 0 52 10 06 12 13 20 0 48 12 24 0 48 12 24 0 48 12 24 0 48 12 24 0 52 12 16 0 52 12 16 0 56 12 08 14 15 30 0 48 14 34 0 51 14 28 0 51 14 28 0 55 14 20 0 59 14 12 0 59 14 12 0 64 14 02 16 17 40 0 54 16 32 0 54 16 32 0 54 16 32 0 58 16 24 0 63 16 14 0 68 16 04 0 68 16 04 18 19 50 0 54 18 42 0 58 18 34 0 58 18 34 0 63 18 24 0 68 18 14 0 73 18 04 0 79 17 92 20 21 60 0 57 20 46 0 62 20 36 0 62 20 36 0 67 20 26 0 72 20 16 0 78 20 04 0 84 19 92 24 25 80 0 63 24 54 0 68 24 44 0 73 24 34 0 79 24 22 0 79 24 22 0 85 24 10 0 92 23 96 Cast Iron Pipe AWWA Standard i Class B Class A 100 Ft 43 PSIG 75 34 87 54 O D WALL LD O D WALL LD 0 0 WALL LD O D WALL LD 500 Ft 217 PSIG 600 Ft 260 PSIG 700 Ft 304 PSIG 800 Ft 347 PSIG Size 6 26 90 33 10 39 60 1 39 1 62 1 72 1 31 1 55 1 80 60 02 72 10 84 10 24 28 26 90 30 00 33 46 36 00 40 04 63 40 76 00 88 54 1 45 1 73 2 02 200 Ft 86 PSIG 1 67 1 95 2 22 60 06 72 10 84 10 Page 62 Clas
25. D DATA screen you can now Clear the log if required or Exit directly back to the MAIN MENU Va Key Point When using the USB to download data make sure that the USB driver has been installed and the correct COM port has been set see Paragraph 2 3 3 7 Configuring the Portaflow PT500 Interfaces 3 7 1 How to set up an RS232 connection If you want to download a stored data log or output live data logging to a PC you must first establish RS232 communication between the PC and the data logger Download is also possible using USB This procedure provides step by step instructions for setting up a HyperTerminal connection which is a standard Windows XP application not available on Vista The default location of HyperTerminal is Start gt All Programs gt Accessories gt Communications gt HyperTerminal Page 35 www greyline com GREYLINE instruments inc Setting up a HyperTerminal connection 1 Open HyperTerminal The Connection Description Connection Description gt dialogue box will appear w New Connection 2 Enter a name for the connection Portaflow Download in the example then click OK ao ciao ame Portaflow Downloaded Icon 2 A gt gt s 05868 A lt EA 3 Select a COM port then click OK ENON DEO Connect using COMI vi Note The available COM ports will vary between x individual PC installations E E 4 Enter values for the Port Settings as shown COUT Za
26. GGER screen 4 20mA O P is ON Dim mm Unit min Select Log data to and choose Memory This will Log name Quickstart store the log to the internal memory Log data to Memory Logging interval 10 seconds Select Logging interval and enter the required Start date amp time dd mm yy hh mm ss period Stop date amp time dd mm yy hh mm ss Select Start date amp time and enter the time you MM DD HH MM SS wish logging to commence Note this must be in Remaining time mm dd hh mm ss the future Memory Rollover Overwrite Graph Y axis max 50 Select Stop date amp time and enter the time you View log as text wish logging to cease Note this must be later than View log as graph the start time START NOW Set Auto start Clear log Exit If the instrument is to be left unattended for a long logging period which could possibly fill the memory select the Memory Rollover option to either Stop or Overwrite This determines what happens to the stored data if the memory becomes full Similarly select Clear log if you want to ensure that maximum memory is available Note if you select to clear all logs you will lose all the currently held log data Select Set auto start This enables the auto logging application Note To cancel the auto start you must select START NOW then STOP NOW to exit the auto mode Select Exit to return to the FLOW READING screen Monitoring the logged events 10 If you wish to view the logging progress at any time
27. Humidity 90 RH MAX at 122 F 50 C Safety BS EN 61010 EMC BS EN 61326 1 2006 BS EN 61326 2 3 2006 Battery Charger EN61204 3 Box Dimensions 16 15 x 8 x 14 410mm x 205mm x 355mm Weight 16 5lbs 7 5 kg Volumetric Weight 11lbs 5 kg Page 59 www greyline com GREYLINE instruments inc PIPE CHARTS Carbon Steel amp PVC Pipe Standard Extra Heavy Dbl Extra Pipe Pipe Schedule 40 Schedule 80 Heavy Schedule 10 Schedule 20 Schedule 30 Schedule 40 Size O D I D WALL I D WALL I D WALL I D WALL I D WALL I D WALL I D WALL Ya 840 622 109 546 147 252 294 622 109 Va 1 050 824 113 742 154 434 308 824 113 1 1 315 1 049 i133 957 179 599 358 1 049 133 1 1 660 1 380 140 1 278 191 896 382 1 380 140 1 2 1 900 1 610 145 1 500 200 1 100 400 1 610 145 2 2 375 2 067 154 1 939 218 1 503 436 2 067 154 2 2 875 2 469 203 2 323 276 1 771 552 2 469 203 3 3 500 3 068 216 2 900 300 2 300 600 3 068 216 3 4 000 3 548 226 3 364 318 2 728 636 3 548 226 4 4 500 4 026 237 3 826 337 3 152 674 4 026 1237 5 5 563 5 047 258 4 813 RCW As 4 063 750 5 047 258 6 6 625 6 065 280 5 761 432 4 897 864 6 065 280 8 8 625 7 981 322 7 625 500 6 875 875 8 125 250 8 071 277 7 981 322 10 10 750 10 020 365 9 750 500 8 750 1 000 10 250 250 10 136 307 10 020 365 12 12 750
28. ON Unit Log name Log data to Logging interval Start date amp time Stop date amp time Remaining time Memory Rollover Graph Y axis max View log as text View log as graph STOP NOW Set Auto start Clear log Exit REAL TIME LOGGER 4 20mA O P is ON Unit Log name Log data to Logging interval Start date amp time Stop date amp time Remaining time Memory Rollover Graph Y axis max View log as text View log as graph STOP NOW Set Auto start Clear log Exit DD MM YY HH MM SS Dim mm l min Quickstart Memory 10 seconds dd mm yy hh mm ss dd mm yy hh mm ss MM DD HH MM SS mm dd hh mm ss Overwrite 50 DD MM YY HH MM SS Dim mm l min Quickstart RS232 10 seconds dd mm yy hh mm ss dd mm yy hh mm ss MM DD HH MM SS mm dd hh mm ss Overwrite 50 When a logging session is in progress the Portaflow PT500 is normally in the FLOW READING mode In this mode you can switch the logging data destination by pressing the Logger function key and then selecting either Memory or RS232 in the Log data to field see the screen above You can also select Both to route the data to both destinations simultaneously Va Key Point This will only work if the Portaflow PT500 is connected to the PC and the RS232 link has already been established If the RS232 has not already been set you will have to go to the MAIN MENU to select the RS232 setup screen and this will immediately stop
29. RATION screen will be displayed 4 Use the UP DOWN scroll key to go to the SENSOR SELECTION menu Select the appropriate sensor the default will be A and press ENTER to return to the SENSOR SEPARATION menu 5 Select Sensor mode and position the cursor at Diagonal and press ENTER to return to the SENSOR SELECTION menu 6 Select Exit and press ENTER to return to the SENSOR SEPARATION screen 7 Check that the parameters displayed are correct 8 Apply acoustic couplant to the sensors and attach them to the test block with the connectors positioned towards the centre of the test block as shown and temporarily secure them in place using elastic bands or tape 9 Connect the sensors to the Portaflow PT500 instrument using the cables provided 10 Press ENTER to go to the FLOW READING screen 11 Select the Options key to go to the FLOW READING OPTION menu and set the Damping to at least 10 seconds 12 Select Exit and press ENTER to return to the FLOW READING menu 13 The flow reading value displayed is not important The fact that a reading is obtained indicates that the instrument is functioning This value may fluctuate but this is normal 14 The signal strength indicator at the left of the display should show 3 4 bars 5 5 Microprocessor Reset Facility In the rare event that the Portaflow PT500 instrument appears to totally hang up or displays total gibberish you can reset its microprocessor by carefully inserting a straigh
30. REYLINE instruments inc 3 7 3 4 Select Off to turn OFF the 4 20mA Output or select one of the output ranges to turn it ON 5 Press ENTER to return to the 4 20mA OUTPUT screen 3 7 4 4 20mA signal calibration and ranging 3 7 4 4 20 mA OUTPUT DD MM YY HH MM SS Dim mm Off 4 20MA 0 20mA 0 16mA Vai Key Point The 4 20mA output has been calibrated in the factory and should not require further adjustment In the rare event that re calibration is necessary this procedure should be carried out only by a trained engineer This procedure describes how to calibrate the 4 20mA output and scale it to operate over a defined flow rate range Signal calibration 1 Select Setup Instrument from the MAIN MENU to access the SETUP INSTRUMENT screen 2 Select Calibrate 4 20mA 3 Connect a calibrated ammeter to the 4 20mA output and adjust the UP DOWN Scroll keys Coarse and LEFT RIGHT Scroll keys 5 amp 6 fine until the output is exactly 4 0mA The DAC should indicate approximately 8000 4 Press ENTER when done 5 With the meter still connected to the 4 20mA output adjust the Scroll keys to obtain an output of exactly 20mA The DAC should indicate approximately 40000 6 Press ENTER when done Page 38 SETUP INSTRUMENT DD MM YY HH MM SS Dim mm Set Date amp Time dd mm yy hh mm ss Calibrate 4 20mA Pulse output Backlight Factory settings Chan
31. Temperature Accepted temperature range 4 F to 572 F 20 C to 300 C Response Enter a valid number Invalid Date or Time Interpretation The entered Date or Time is invalid or when setting up timed data logging the Stop time is set earlier than the Start time Response Enter a valid Date and Time Sensors INVALID Interpretation The selected temperature is higher than the maximum allowed for the sensor type Response Select alternative sensors or change the temperature Mode Err Typ Interpretation The selected sensors are invalid and the mode cannot be verified Response Select a valid sensor type and choose a mode that gives a non zero separation distance Page 50 www greyline com GREYLINE instruments inc Test Block A test block is included with the Portaflow PT500 equipment to allow the transducers and inter connecting cables to be 2 i functionally checked 1 Switch ON the instrument 2 Select Quick start and enter the parameters shown in the table below for the appropriate transducer type A or B Parameter A Sensors B Sensors Pipe outside diameter 1 02 26 0mm 2 09 53 0mm Pipe wall thickness 0 24 6 0mm 0 28 7 0mm Pipe lining thickness 0 0 0 0 Pigutes 2 Test block Pipe wall material Mild Steel Mild Steel Fluid type Water Water Temp 68 F 20 C 68 F 20 C 3 When the above data is entered the SENSOR SEPA
32. USER S GUIDE Installation amp Operation Instructions Portaflow Model PT500 Manual Series A 2 Note This page has been left blank intentionally PORTAFLOW PT500 Portable Ultrasonic Flowmeter User s Guide GREYLINE instruments inc www greyline com GREYLINE instruments inc Table of Contents T General Descriptio Miiisaaa ea iaia asia aio 6 Tit INTFOGUCHON asia iaia ea 6 1 2 Principles OF Operation ELE 7 1 3 Supplied Hardware i 8 1 4 Portaflow PT500 Instrument auwawa nima wwa iwa aii kiwi kiana 9 1 41 COME aa ka 9 14 2 KOYPa WEEE WAA AAA AAA iii 10 1 4 3 Power supply and battery charging i 11 15 TransOAUcersi tii ini ela ie 11 2 instalation ise otic deka ee seat aight e iaia 12 251 TransSQucer POSA areale iii 12 2 2 Transducer Attachment Type A amp B umwa awiazi wazaa 13 2 21 ed 8 10 0 0 peeerere een prerecerrererecrr ere reer rrr li iaia illa 13 2 2 2 Attaching the guide rails ima imaemem imam 13 2 2 3 Fitting the transdUcers i 14 2 3 Installing the USB Virtual Com Portt i 15 3 Operating Procedures ii 16 3 1 Setting up the Instrument cee ee eeeeeeeeeeceeeeeeeaeeeeaaeeseeeeesaaeeeeaaeseeeeeseaeessaeeeeeeeseaees 17 3 1 1 Using the instrument for the first time i 17 3 1 2 Enabling disabling the backlight
33. a 1 Scroll DOWN instrumentsinc ety Scroll LEFT Scroll RIGHT Figure 1 4 Keypad 1 4 2 Keypad The instrument is configured and controlled via a 16 key tactile membrane keypad as shown in Figure 1 4 ON OFF Key The ON OFF key is shown on the top left of the keypad When turned ON an initialisation screen is displayed on the LCD showing the instrument s serial number and software revision Once this appears the instrument can be started by pressing the ENTER key once the initialization screen is then replaced by a MAIN MENU which provides access to the remaining functions Menus and the menu selection keys The Portaflow PT500 menus are arranged hierarchally with the MAIN MENU being at the top level Menu navigation is achieved by three keys on the right hand side of the keypad which are used to scroll UP and DOWN a menu list and SELECT a menu item When scrolling through a menu an arrow shaped cursor moves up and down the left hand side of the screen to indicate the active menu choice which can then be selected by pressing the ENTER SELECT key Some menus have more options than can be shown on the screen at the same time in which case the overflowed choices can be brought into view by continuing to scroll DOWN past the bottom visible item Menus generally loop around if you scroll beyond the first or last items If you select Exit it usually results in taking you back one level in the menu hierarchy but in
34. adjustment these are normally carried out only where the instrument is to be used in a permanent or semi permanent location 3 5 1 Adjusting the zero cut off This adjustment allows you to set a minimum flow rate m s below which the instrument will indicate 0 The default setting is 0 02 m s but you may adjust this value if required 1 With the instrument operating in FLOW READING mode press the Options key to access the FLOW READING OPTIONS menu shown 2 Select Zero Cutoff m s and press ENTER FLOW READING OPTION 3 Enter the value for the Zero Cutoff e g 0 06 m s Data review then press ENTER Zero Cutoff m s Set zero flow m s 4 Scroll down to select Exit and press ENTER to Damping secs return to the FLOW READING screen Totaliser Reset Total 3 5 2 Adjusting the set zero flow offset DD MM YY HH MM SS 0 00 0 00 10 Run The Portaflow instrument operates by comparing the time taken to send an ultrasonic signal between two transducers in either direction A Set zero flow offset adjustment is provided to compensate for any inherent differences between the two sensors noise pick up internal pipe conditions etc It can be used to zero the flow indication under no flow conditions Va If you have adjusted the Zero Cutoff point to anywhere above 0 you must reset it to 0 before you can observe and adjust the Set zero flow offset as its value is very small Once the Set
35. ase contact Greyline by telephone fax or email to obtain an RMA number Returned Merchandise Authorization This ensures fast service and correct billing or credit When you contact Greyline please have the following information available Model number Software Version Serial number Date of Purchase Reason for return description of fault or modification required Your name company name address and phone number arwns Clean the Sensor Product Important unclean products will not be serviced and will be returned to the sender at their expense 1 Rinse sensor and cable to remove debris 2 If the sensor has been exposed to sewage immerse both sensor and cable in a solution of 1 part household bleach Javex Clorox etc to 20 parts water for 5 minutes Important do not immerse open end of sensor cable 3 Dry with paper towels and pack sensor and cable in a sealed plastic bag 4 Wipe the outside of the enclosure to remove dirt or deposits 5 Return to Greyline for service Ship to Greyline After obtaining an RMA number please ship the product to the appropriate address below Canadian and International USA Customers Customers Greyline Instruments Inc Greyline Instruments Inc 16456 Sixsmith Drive 204 150th Avenue Long Sault Ont KOC 1P0 Madeira Beach FL 33708 RMA RMA Page 54 www greyline com GREYLINE instruments inc LIMITED WARRANTY Greyline Instruments warrants to the original purchaser it
36. ata to BT printer If communications has been successfully established the Portaflow PT500 will send data to Press to cancel printing the printer Page 43 www greyline com GREYLINE instruments inc Establishing communications non default printer If the Bluetooth printer to be used is not the default printer then the Portaflow PT500 must first search for the printer s ID address and type ASL Ap1300 BT When retrieved these values are stored and the new printer becomes the default printer Initially the communication sequence will be the same as for the default printer namely e Initialising Bluetooth e Configuring BT printer e Connecting BT printer At this point the Portaflow PT500 cannot find its default printer and will automatically initiate a search for another ASL Ap1300 BT printer During this time the following status messages will be displayed 1 If another ASL Ap1300 BT printer is found then BT CONNECTION DD MM YY HH MM SS data will be sent to the printer Searching BT printer Connecting to printer Please wait 2 If no other ASL Ap1300 BT printer is found this BT CONNECTION DD MM YY HH MM SS message will be displayed Failed to connect to printer Pressto return to Menu or AV to try again Key Point f the Portaflow PT500 fails to establish communication on the first attempt you should press the A or V scroll key to try again Communications fail
37. better understanding of an application s true performance This is simply achieved by noting the total flow over a specific period for example 30 60 minutes and then calculating the average flow rate over that period of time 1 Press the Options key to access the FLOW READING OPTION screen shown 2 Ifthe Totaliser is indicating Run select it and change it to Stall Press ENTER 3 Select Reset Total and press ENTER 4 Press ENTER on the subsequent screen to accept the reset 5 Press ENTER again to return to the FLOW READING OPTIONS menu 6 Select Reset Total and press ENTER 7 Press ENTER on the subsequent screen to accept the reset 8 Press ENTER again to return to the FLOW READING OPTIONS menu 9 Note and record the current time 10 Select Totaliser and change it to Run Press ENTER Note the totalisers begin to count up as soon as Totaliser is put to Run 11 Scroll down and select Exit to return to the FLOW READING screen which will now indicate the instantaneous flow together with the totalised flow Note that in some installation the measured flow can be in either direction Where this is the case the upstream flow is shown separately in the Total field Page 29 FLOW READING OPTION Data review Zero Cutoff m s Set zero flow m s Damping secs Totaliser Reset Total FLOW READING OPTION Zero Cutoff m s Set zero flow m s Damping secs Totaliser Reset Total Res
38. c manual logging Paragraph 3 6 2 USB set up Paragraph 3 7 2 How to set up auto timed logging Paragraph 3 6 3 4 20mA ON OFF Paragraph 3 7 3 How to set up logging live to a PC Paragraph 3 6 4 4 20mA Calibration Paragraph 3 7 4 How to download saved data to a PC Paragraph 3 6 5 Pulse ON OFF Paragraph 3 7 6 How to print data Paragraph 3 8 Pulse calibration Paragraph 3 7 7 Page 16 www greyline com GREYLINE instruments inc 3 1 Setting up the Instrument 3 1 1 Usingthe instrument for the first time Before you use your Portaflow PT500 for the first time you should first charge the battery then select the display language and set up the internal clock as described below Charging the battery 1 Connect the external battery charger to the charger socket at the bottom of the instrument then switch on the utility supply 2 The instrument should indicate CHARGING and an CHARGING DD MM YY HH MM SS animated battery symbol indicates that the battery is taking on charge 3 Leave the instrument on charge for 6 5 hours SREYLINE before using it for the first time instruments ne Selecting a language The first time you switch on the instrument you may be asked to select a user language 1 Switch on the instrument by pressing the ON OFF button 2 If necessary select the required language using the UP DOWN scroll keys then press the ENTER key 3 The selected language w
39. calibrated before leaving the factory and under normal circumstances does not require further calibration when used on site This facility can be used to correct the flow indication where unavoidable errors oc cur due to the lack of a straight pipe or where the sensors are forced to be fitted close to the pipe end valve junction etc Any adjustment must be made using a reference flowmeter fitted in the system With the system running 1 Stop Stall the Portaflow s totaliser facility and zero it Paragraph 3 6 1 2 Run the Portaflow s totaliser to measure the total flow over a 30 60 minute period and note the total flow indicated by the reference flow meter over the same period 3 Calculate the error between the Portaflow and reference meters If the error is greater than 1 calibrate the Portaflow as detailed below 4 Press the Options key to access the FLOW FLOW READING OPTION DD MM YY_ HH MM SS READING OPTION screen shown Data review 5 Scroll down and select Calibration factor Zero Cutoff m s 0 00 Set zero flow m s 0 00 6 Change the calibration factor according to the error Damping secs 10 calculated in step 3 For example if the Portaflow Totaliser 5 Run was reading 1 high then increase the Calibration Reset Total factor value by 0 010 Conversely if the reading is 1 low then decrease the calibration factor to Reset Total 0 990 Calibration factor Roughness factor 7 Press Enter
40. connected transducers Incorrect setup A low or zero signal could be caused by incorrect set up such as e Incorrect site data entered into the instrument e Incorrect or non matching ultrasonic transducers selected for use e Incorrectly fitted transducers lack of couplant applied incorrect spacing insecure attachment Poor connections between the probes and the instrument Application problem If you are certain that the instrument is healthy and suitably set up for the current site and the probes are properly assembled and fitted correctly there could be an application problem concerned with the site Check such conditions such as Poor pipe outer surface quality e Uneven surface preventing good surface contact with the transducer e Flaking paint should be removed e Variable air gap in concrete covered pipes affecting the ultrasonic signal quality Poor internal pipe construction e Rough internal pipe walls affecting fluid flow see roughness factor e Internal welds positioned in the transducer signal path affecting the signal quality e The drippings in galvanised dipped pipes or other irregularities interfering with the signal path Incorrect probe location e Transducers located too close to bends or valves disturbing the flow profile e Transducers located too close to insertion probes disturbing the flow profile e For horizontal pipework transducers should not be positioned on the top of the pipe Poo
41. d water Page 6 www greyline com GREYLINE instruments inc 1 2 Principles of Operation When ultrasound is transmitted through a liquid the speed at which the sound travels through the liquid is accelerated slightly if it is transmitted in the same direction as the liquid flow and decelerated slightly if transmitted against it The difference in time taken by the sound to travel the same distance but in opposite directions is therefore directly proportional to the flow velocity of the liquid The Portaflow PT500 system employs two ultrasonic transducers attached to the pipe carrying the liquid and compares the time taken to transmit an ultrasound signal in each direction If the sound characteristics of the fluid are known the Portaflow microprocessor can use the results of the transit time calculations to compute the fluid flow velocity Once the flow velocity is known the volumetric flow can be easily calculated for a given pipe diameter The Portaflow system can be set up to operate in one of four modes determined mainly by the pipe diameter and the type of transducer set in use The diagram below illustrates the importance of applying the correct separation distance between the transducers to obtain the strongest signal Upstream Separation transducer _ Distance UA D Reflex mode This is the mode most commonly used The two transducers U amp D are attached to the pipe in line with each other and the LA signa
42. e Setting up and starting the logging 1 With the Portaflow now operating in FLOW READING mode check that the indicated flow units are the same as those you want to appear on the logger output e g l min 2 Press the Logger function key to access the REAL REAL TIME LOGGER DD MM YY HH MM SS TIME LOGGER screen 4 20mA O P is ON Dim mm Unit min 3 Select Log data to and choose Memory to store the Log name Quickstart log to the internal memory Log data to Memory Logging interval 10 seconds 4 Select Logging interval and enter the required Start date amp time dd mm yy hh mm ss period Stop date amp time dd mm yy hh mm ss 5 Select Clear log if you want to discard any existing MM DD HH MM SS logging data Remaining time mmddhhmmss Memory Rollover Overwrite 6 Select START NOW Logging should begin and a Graph Y axis max 50 Logging to memory message should appear on the View log as text second line of the display View log as graph START NOW 7 Select View log as text to check that logging is Set Auto start taking place Clear log Exit 8 The VIEW LOG AS TEXT screen displays the log VIEW LOG AS TEXT DD MM YY HH MM SS events in date stamped chronological order Logging to memory Dim mm Log Quickstart Note Press key 5 to go to the top line of logged Date Time Flow data or key 6 to go to the bottom line DD MM YY hh mm ss xxx xx I m TTT DD MM YY hh mm ss xxx xx l m 9 Press
43. e So ee sludge wi O A IS peer eresse Flow 4 4 10 x Diameter Valid transducer location 20 x Diameter Flow Figure 2 1 Locating the transducers To obtain the most accurate results the condition of both the liquid and the pipe wall must be suitable to allow the ultrasound transmission along its predetermined path It is important also that the liquid flows uniformly within the length of pipe being monitored and that the flow profile is not distorted by any upstream or downstream obstructions This is best achieved by ensuring there is a straight length of pipe upstream of the transducers of at least 20 times the pipe diameter and 10 times the pipe diameter on the downstream side as shown in Figure 2 1 Flow measurements can be made on shorter lengths of straight pipe down to 10 diameters upstream and 5 diameters downstream but when the transducers are positioned this close to any obstruction the resulting errors can be unpredictable P Key Point Do not expect to obtain accurate results if the transducers are positioned close to any obstructions that distort the uniformity of the flow profile Page 12 www greyline com GREYLINE instruments inc 2 2 Transducer Attachment Type A amp B Type A amp B transducers are fitted to adjustable guide rails which are secured to the pipe using wrap around chains and mechanically connected together by a steel separat
44. equired separation distance obtained from the Portaflow instrument on the ruler F then secure it in place by tightening the thumbscrew Page 13 www greyline com instruments inc 3 On each guide rail attach one end of a securing chain to a hook on the tensioning bar B wrap the chain around the pipe G and then attach it to the hook on the other end of the tensioning bar whilst keeping the chain as tight as possible 4 Rotate the complete guide rail assembly so that it is approximately 45 with respect to the top of the pipe Then tighten the chain by turning the tensioning thumb wheel A on each guide block until the assembly is securely attached to the pipe Note If you are unable to get sufficient tension on the chain to hold the assembly in place fully slacken the tensioning thumb wheel and shorten the effective length of the chain wrapped around the pipe by connecting the tensioning bar to the next link in the chain then re tension 2 2 3 Fitting the transducers C Transducer cover plate securing screw B Transducer locating slot lug D Transducer cable connection A Transducer cover plate E Ultrasonic _ couplant application Figure 2 3 Fitting the transducers 1 Slide the transducer cover plate A fully towards the outside of the guide assembly to allow sufficient access to fit the transducer 2 Clean the face of the transducer removing all traces of dirt and grease 3 Apply a 1 8 8mm bead
45. er 5 We recommend that the ultrasonic couplant is replaced on the sensors every 6 months especially on pipes where the application is too hot to touch If the signal level drops below 30 this is also an indication that the sensors need re greasing 6 Regularly check all cables parts for damage Replacement parts are available from Greyline 7 Ensure the person who services your instrument is qualified to do so If in doubt return the instrument to Greyline with a detailed report on the nature of any problem 8 Ensure that suitable precautions are taken when using any materials to clean the instrument sensors 9 The instrument and sensors should be calibrated at least once every 12 months Contact Greyline or your local service agent for details 10 When returning product to Greyline make sure it is clean and please notify Greyline if the instrument has been in contact with any hazardous substances 11 If the instrument was supplied with dust or dirt caps make sure they are re fitted when the instrument is not in use Page 45 www greyline com GREYLINE instruments inc 5 Troubleshooting 5 1 Overview If you have a problem with your flow monitoring system it can be due to any of the following Faulty instrument If you suspect the instrument is faulty you can check it out using a test block as described in Paragraph 5 4 This will establish that the instrument is functional and receiving a healthy signal from the
46. er Overwrite Note that the logged data will remain stored in the Graph Y axis max 50 instrument s memory and can be accessed at any time f View log as text as described above View log as graph STOP NOW Set Auto start Clear log Exit Page 32 www greyline com GREYLINE instruments inc 3 6 3 How to set up automatic timed logging mode This procedure shows you how to set up an auto logging session under timed start stop control The logged data is saved to the instrument s memory and can be downloaded to a PC at a later time Starting point This procedure assumes that the Portaflow has been correctly installed and is operating in the FLOW READING mode Also that the date and time are correctly set Setting up and starting the logging 9 Key Point When entering the Start and Stop times in this procedure you must enter 00 in the seconds field rather than leave it blank otherwise an error message is displayed Key Point If you enter a Start time later than the Stop time you will see an error message until the stop time has been set to be later This does not however affect the operation of the equipment once the correct times have been set With the Portaflow operating in FLOW READING mode check that the indicated flow units are the same as those you want to appear on the logger output e g l min Press the Logger function key to access the REAL REAL TIME LOGGER DD MM YY HH MM SS TIME LO
47. ery time you want to install the equipment there Note See Paragraph 3 4 for details of how to set up and manage site details Use this procedure to install the equipment at a named site 1 Select View Edit Site Data from the MAIN MENU VIEW EDIT SITE DATA DD MM YY HH MM SS Dim mm 2 Select Choose from list of sites Choose from list of sites Site name MySite 3 Select one of the sites listed and press ENTER Dimension units mm i ji Pipe outside diameter 58 00 4 The Site name will show the selected site and the Pipe wall thickness 4 00 Pipe lining thickness 0 00 Page 21 www greyline com GREYLINE instruments inc site parameters will be listed on the screen 5 Scroll down through the menu list and enter change the data that might have changed since the last time the site was accessed 6 When you are satisfied that the parameters are correct select Save current site amp read flow 7 If you need to alter the fluid temperature from that shown select either C or F with the cursor and press the ENTER key 8 Enter the new temperature value and press the ENTER key 9 The new temperature should now be indicated in both C and F 10 Select Continue and press ENTER 11 The SENSOR SEPARATION screen now displays a summary of the entered parameters and informs you of the type of sensor to be used the mode of operation and the distance to set up between the sensors In this
48. et Total FLOW READING Signal 12 34 Total 300 0 Total 0 00 DD MM YY HH MM SS 0 00 DD MM YY HH MM SS 0 00 0 00 10 Run DD MM YY HH MM S Dim mm min litres litres www greyline com GREYLINE instruments inc Calculating the average flow To calculate the average flow wait for the allotted monitoring period to expire then divide the indicated total flow by the time taken This will give you the average flow in m s galls hours or whatever units you select Note that in a bi directional flow situation you must calculate the difference between the indicated positive and negative flow totals before carrying out the average flow rate calculation How to stop the totaliser temporarily If you want to stop the totaliser temporarily for operational reasons set the Totaliser option to Stall in the FLOW READING OPTIONS screen as described above This will stop the totaliser operation without affecting its current values Page 30 www greyline com GREYLINE instruments inc 3 6 2 How to set up the basic logging application to memory This procedure shows you how to set up a basic logging session under manual start stop control The logged data is saved to the instrument s memory and can be downloaded to a PC at a later time Starting point This procedure assumes that the Portaflow has been correctly installed and is operating in the FLOW READING mod
49. eyline for advice if needed Transducer set A Supplied as standard for use on pipes 0 51 to 4 525 13mm to 115mm outside diameter Transducer set B Supplied as standard for use on pipes 1 97 to 78 74 50mm to 2000mm outside diameter Transducer set D Type D transducers are optional equipment that can be used by the Portaflow PT500 on pipes from 59 to 196 1500mm to 5000mm They are supplied complete with ratchet straps for diagonal mode attachment Page 11 www greyline com SREYLINE instruments inc 2 Installation 2 1 Transducer Positioning In many applications an even flow velocity profile over a full 360 is unattainable due for example to the presence of air turbulence at the top of the flow and possibly sludge in the bottom of the pipe Experience has shown that the most consistently accurate results are achieved when the transducer guide rails are mounted at 45 with respect to the top of the pipe The Portaflow equipment expects a uniform flow profile as a distorted flow will produce unpredictable measurement errors Flow profile distortions can result from upstream disturbances such as bends tees valves pumps and other similar obstructions To ensure a uniform profile the transducers must be mounted far enough away from any cause of distortion such that it no longer has an effect Uniform Flow Profile Distorted Flow Profile Air re dii iii latte azzo Possibl
50. f still no response contact Greyline Instruments Failed to connect to printer Interpretation The unit has failed to make connection with the default Bluetooth printer Response Try again If connection still fails then start a search for another printer 4 20mA ERRORS mA out gt Max Interpretation The actual flow is higher than the maximum set on the mA range Response Re scale the 4 20mA output to be able to cope with the higher flow see Paragraph 3 7 4 Calibration 20mA Error NOTE The 4 20mA output is calibrated before the instrument leaves the factory and should not require further adjustment Interpretation You have adjusted the DAC outside its accepted range when calibrating the 20mA signal output Response Re calibrate the 4 20mA output see Paragraph 3 7 4 Calibration 4mA Error NOTE The 4 20mA output is calibrated before the instrument leaves the factory and should not require further adjustment Interpretation You have adjusted the DAC outside its accepted range when calibrating the 4mA signal output Response Re calibrate the 4 20mA output see Paragraph 3 7 4 DATA LOGGING ERRORS Log not empty Interpretation Not yet implemented Log memory full Interpretation This occurs when all the data logger memory locations are filled The effect on the logging process will depend on the setting of the Memory rollover field in the REAL TIME LOGGER screen which may be set to St
51. for sufficient couplant Zero cut off error Interpretation You have entered an out of range value in the Zero cutoff field in the Options menu Response Enter a valid number Damping error Interpretation You have entered an out of range value in the Damping field in the Options menu Response Enter a valid number Totaliser beyond maximum Interpretation The totaliser has overflowed its maximum count The counter will roll over and restart from zero but this message alerts you to the fact Response Reset the totaliser as described in Paragraph 3 6 1 PULSE ERRORS Pulse Rate gt Max Interpretation The flow rate exceeds the capability of the pulse output i e too many pulses per second are required than can be achieved Response Narrow the pulse width time or increase the volume per pulse as described in Paragraph 3 7 7 Pulse volume error Interpretation You have entered an out of range value in the Pulse volume error field in the PULSE OUTPUT menu see Paragraph 3 7 7 Response Enter a valid number Pulse width error Interpretation You have entered an out of range value in the Pulse width error field in the PULSE OUTPUT menu see Paragraph 3 7 7 Response Enter a valid number Page 48 www greyline com GREYLINE instruments inc BLUETOOTH PRINTING ERRORS BT Module Not Found Interpretation No response from the internal Bluetooth Module Response Try again I
52. ge Language Disabled CALIBRATE 4mA DD MM YY HH MM SS Dim mm Adjust the output current to 4mA Use AV to set 5 6 to trim DAC Value 8000 Press when done CALIBRATE 20mA DD MM YY HH MM SS Dim mm Adjust the output current to 20mA Use AV to set 5 6 to trim DAC Value 40000 Press when done www greyline com GREYLINE instruments inc 4 20mA Signal scaling Note The 4 20mA can be set to represent a particular flow range It is also possible to enter a negative figure for the minimum output and this would enable a reverse flow to be monitored 7 With the instrument operating in the FLOW READING mode press the 4 20mA function key This will access the 4 20mA OUTPUT screen 8 Select Flow at max output and enter a value of the flow rate that you want to associate with a 20mA output 9 Select Flow at min output and enter a value of the flow rate that you want to associate with a 4mA output This could be 0 4 20 mA OUTPUT 4 20 mA O P is ON mA Output Reading Output Range Units Flow at max output Flow at min output Output mA for error DD MM YY HH MM SS Dim mm 0 00 4 20 l min 0 00 0 00 22 00 10 Select Output mA for error and enter a value max of about 23mA that you want the 4 20mA output to produce in the event of an error e g if the flow rate is outside the set range 11 Upon completion press ENTER to return to the
53. ill be the default when SREYLINE the instrument is next used To change the inefruments No language again select the Change Language INSEUMENLS INC option in the SETUP INSTRUMENT screen see below Serial V 00 00 00 00 00 00 00 0000 4 The initialisation screen will be displayed giving 27 Press to start details of the instrument s serial number and software revision details 5 Press ENTER to start the instrument MAIN MENU DD MM YY HH MM SS 6 This is the MAIN MENU and is the starting point for all the operations described in this chapter Q ick start View Edit Site Data Data Logger Setup RS232 USB Setup Instrument Read flow Page 17 www greyline com GREYLINE instruments inc Setting the Date amp Time 1 Select Setup Instrument from the MAIN MENU SETUP INSTRUMENT DD MM YY HH MM SS The screen shown here should be displayed Dim mm Set Date amp Time dd mm yy hh mm ss 2 Select Set Date amp Time and click ENTER Calibrate 4 20mA Pulse output 3 A flashing cursor should appear under the first date Backlight Disabled number Enter the date sequence in dd mm yy Factory settings order then press ENTER Change Language 4 Repeat this action to set the time 5 Select Exit then press ENTER to return to the MAIN MENU Note If you make a mistake when entering the data press the Delete key to move the cursor back to the number you wish to change then co
54. ion bar The separation bar also acts as a ruler to allow the distance between the transducers to be accurately set to the value determined by the Portaflow instrument When fitting the guide rails it is easiest to assemble them onto the separation bar and adjust to the required separation distance before attaching them to the pipe 2 2 1 Preparation 1 Before you attach the transducers you should first ensure that the proposed location satisfies the distance requirements shown in Eigure 2 1 otherwise the resulting accuracy of the flow readings may be affected 2 Prepare the pipe by degreasing it and removing any loose material or flaking paint in order to obtain the best possible surface A smooth contact between pipe surface and the face of the transducers is an important factor in achieving a good ultrasound signal strength and therefore maximum accuracy 2 2 2 Attaching the guide rails 0 A Tensioning thumb wheel B Tension bar C Separation bar securing screw Separation bar Ruler scale 0 Set Separation distance Securing chain ommo Figure 2 2 Guide rail attachment 1 Slide the separation bar D into the front of the left hand guide rail align the front edge of the guide rail with 0 on the ruler scale E and secure it in place by tightening the thumbscrew C 2 Slide the other end of the separation bar into the front of the right hand guide rail align the front edge of the guide rail to the r
55. level is displayed symbolically on the LCD screen A warning message is triggered if the charge falls to approximately 30 at which point there is up to four hours of battery operation remaining depending on usage The battery can be charged both while the instrument is in use or when switched off The instrument s internal data is stored in non volatile memory and will not be lost even if the battery discharges completely Vai Key Point The battery is not a user changeable item The instrument must be returned to your distributor if the battery needs replacing Key Point Only use the supplied charger or special adaptor lead Failure to comply with this will invalidate your warranty 1 5 Transducers Two sets of ultrasonic transducers are provided as standard When setting up the instrument it will indicate the appropriate transducer set to use for a particular application depending on data entered by the user Default pipe ranges are programmed into the instrument and most of the time there will be no need use an alternative transducer set to the one suggested by the instrument However if circumstances dictate that a different set must be used it is possible to manually programme the instrument to accept the alternative set Vai Key Point Each transducer set has its designed working parameters and there are limitations as to how far these can be extended in the field without degrading the instrument s sensitivity and accuracy Contact Gr
56. lied to Ensure transducers are positioned in accordance the transducers with the recommended distance from bends etc Ensure fluid type been entered correctly Ensure correct transducer type been selected If triple reflex mode is selected try double or single Ensure flow velocity gt 0 01m s reflex instead Ensure transducer separation distance correct Ensure transducers are aligned correctly Ensure pipe diameter within specifications of the selected transducers Check instrument using test block Ensure the pipe is completely full Ensure pipe surface is not corroded or protective surface loose Check for particles in the fluid Figure 5 1 Troubleshooting chart Page 47 www greyline com GREYLINE instruments inc 5 3 Warning amp Status Messages FLOW RATE ERRORS No flow signal Interpretation This message appears when the transducers cannot send or receive signals to each other Response Firstly check that all cables are connected transducers are on the pipe correctly with sufficient couplant on the face This condition could also be due to a partially empty pipe aerated liquid particulate content too high or when the condition of the pipe being measured is poor Flow signal is poor Interpretation This warning appears when the signal is lower than 25 Response This could be due to an application problem a poor quality pipe see also the conditions for No flow signal above Check
57. lly named EmptySite1 through to EmptySite19 3 4 1 Setting up a new site 1 Select View Edit Site Data from the MAIN MENU VIEW EDIT SITE DATA DD MM YY HH MM SS Dim mm 2 Select Choose from list of sites Choose from list of sites Site name EmptySite1 3 Select one of the EmptySites from the presented Dimension units mm list e g EmptySite 1 as shown Pipe outside diameter 58 00 Pipe wall thickness 4 00 4 Select Site name and press ENTER Pipe lining thickness 0 00 5 This opens the ALTER NAME screen ALTER NAME DD MM YY HH MM SS 6 Select Alter the Site Name and you will be Site name EmptySitet presented with a screen which allows you to enter a new name in much the same way as when Do you wish to composing a mobile text message Alter the Site Name Exit 7 On completion press ENTER then select Exit This will take you back to the VIEW EDIT SITE DATA screen Page 23 www greyline com GREYLINE instruments inc 8 Scroll down through the menu list and enter change the pipe parameters and other data pertaining to the site Note that this menu allows you to choose a Sensor Set unlike the QUICK START menu which recommended the sensor set to use If you enter an inappropriate sensor set in this menu you will be presented with an error message later when you go to the SENSOR SEPARATION screen 9 When all the data is correct you can either a Select Save current
58. ls Bluetooth 2 0 certified FCC CE certified with internal antenna ELECTRICAL Supply Voltage Input Voltage 9 24Vdc Range Page 57 www greyline com GREYLINE instruments inc Power 10 5W Consumption Battery Technology 5 cell NiMH Capacity 3 8AHr Operating time Typically 20 hours continuous with backlight and 4 20mA output OFF Recharge Time 6 5 Hours Service Life gt 500 charge discharge cycles Power Supply Charger Manufacturer ECOPAC Model ECO 181WP12 Input Voltage 90 264Vac Range Input Frequency 47 63Hz Range Output Voltage 12Vdc Max Output 1 5A Current Approvals UL CUL TUV CB amp CE MECHANICAL Carrying case Rating All components are contained in a hard wearing IP67 rated carrying case with a protective moulded foam insert Enclosure Material Flame retardant injection moulded ABS Dimensions 264mm x 168mm x 50mm Weight Including 2 5lbs 1 1 kg Battery Protection IP54 Keypad No Keys 16 Display Format 240 x 64 pixel graphic display high contrast black on white with backlight Viewing Angle Min 30 typically 40 ENVIRONMENTAL Operating 4 F to 122 F 20 C to 50 C Temperature Page 58 www greyline com GREYLINE instruments Inc Storage Temperature 13 F to 149 F 25 C to 65 C Operating
59. ls passing between them are reflected FI luid flow a Se ot by the opposite pipe wall d t The separation distance is calculated by UA III ZIZI III IIIA i to enter d data concerning the pipe and fluid characteristics Reflex mode double bounce In this mode the separation distance is A calculated to give a double bounce This is Fluid flow aaa most likely to occur if the pipe diameter is _ wn NG so small that the calculated reflex mode Coe ee eee eee Separation distance would be impractical for the transducers in use K Reflex mode triple bounce This illustration goes one step further to show Fluid flow a triple bounce situation This would normally aie n ent aga apply when working with very small pipes TTZZZZZTTT TXT xzzz2 relative to the transducer range in use FO F r I SE MS AR PAR ET EB E E T A Pa ee AZZZ Z 2 R L Separation Distance Diagonal mode This mode might be selected by the instrument where relatively large pipes are concerned In this mode the transducers are located on opposite sides of the pipe but the separation distance is still critical in order for the signals to be received correctly Fluid flow ak This mode might be used with the standard A amp B transducer sets but for really large pipe installation the optional transducer set D might be recommended Figure 1 1 Operating modes Page 7 www greyline com GREYLINE instrument
60. nected press the Enter key Please wait Checking signals 19 This will take you from the SENSOR SEPARATION screen to the FLOW READING screen via a signal waa checking screen shown here HRA KKK KKK IKKE KKK IKE RIK KKK k k k k k k kk k kkk kk 20 Check that the indicated signal strength on the left FLOW READING DD MM YY HH MM SS of the screen is at least 2 bars ideally 3 or 4 If Dim mm less than 2 bars are shown it indicates there could Signal be a problem with the transducer spacing alignment or connections or it could be due to an at 0 0 0 0 application problem n Total 0 00 litres Total 0 00 litres l min Flow monitoring The FLOW READING screen is the one most used during normal monitoring operation It shows the instantaneous fluid flow together with totalised values when enabled In this mode you can select the flow rate measurement units by pressing keys 7 litres 8 Gallons or 9 m8 or change the display to show velocity by pressing key 4 3 3 Using the System at a Regularly Monitored Location Setting up the Portaflow system using the Quick Start method described in Paragraph 3 2 is easy and the recommended method to use in a one off situation But if you have a site location that you want to monitor on a frequent basis it is better to set up a named Site for that location so that you can recall it when needed and so avoid the need to re enter the site details ev
61. nstream transducer to the BLUE one for a positive flow reading It is safe to connect or disconnect the cable while the instrument is switched on RS232 and USB connections RS232 and USB cables are included as part of the Portaflow PT500 kit These can be connected to the yellow 8 pin connector on the top of the flowmeter as shown in Figure 1 3 The RS232 cable is terminated with a 9 pin D type connector 4 20mA and Pulse output connection The 4 20mA pulse output cable should be connected to the green 7 pin connector on the top of the flowmeter as shown in Figure 1 3 A single cable that can be adapted for use for either of these output functions is included in the Portaflow PT500 kit The tails on the free end of the cable must be terminated to suit the intended application Red 4 20mA positive Black 4 20mA negative White Pulse output Green Pulse return Brown Set Point not in present use Blue Set Point return not in present use Thick Black Cable screen Page 9 www greyline com GREYLINE instruments inc Battery charger connection The supplied battery charger is connected to the instrument by means of the grey 2 pin connector on the bottom of the unit as shown in Figure 1 3 Note The above connectors have different key ways to prevent incorrect cable connection Numerical keypad Psi dual function keys ON OFF W WA Scroll UP 1 ENTER PT500 SELECT GRE 4
62. ntinue If you enter an invalid number an ERR Invalid Date or Time error message is displayed on the second line of the screen If this occurs repeat the set date time procedure 3 1 2 Enabling disabling the backlight When the backlight is enabled it will illuminate for 15 seconds every time a key is pressed so if it is not required it is recommended that you disable it to prolong the battery discharge time 1 Select Setup Instrument from the MAIN MENU SETUP INSTRUMENT DD MM YY HH MM SS Dim mm 2 Select Backlight from the SETUP INSTRUMENT Set Date amp Time dd mm yy hh mm ss screen then press ENTER Calibrate 4 20mA Pulse output Backlight Disabled Factory settings Change Language 3 Select Enable or Disable as required BACKLIGHT DD MM YY HH MM SS 4 Press ENTER to return to the SETUP Dim mm INSTRUMENT screen Enabled 5 Select Exit then press ENTER to return to the Disabled MAIN MENU 3 2 Using the Quick Start Menu If you want to perform a one off flow reading at a particular pipe location the Quick Start menu provides the quickest way to set up the Portaflow system and access the FLOW READING screen If the point at which you intend to take the measurement is likely to require regular monitoring it is best to set it up as a Site within the Portaflow PT500 which then stores the site parameters See Managing Named Sites Page 18 www greyline com GREYLINE instrument
63. of ultrasonic couplant along the centre length of the transducer E 4 Fit the transducer into the guide block ensuring the lugs on the sides of the transducer are correctly located into the slots on the sides of the guide block B 5 Slide the transducer cover plate A over the top of the transducer and tighten the thumbscrew C finger tight to secure the transducer in place When securing the cover plate take care to leave sufficient room around the transducer connector D to connect the cable 6 Repeat the above steps for the second transducer 7 Connect the transducers to the Portaflow instrument using the coaxial cables provided The RED cable must be connected to the upstream transducer and the BLUE cable to the downstream transducer Page 14 www greyline com GREYLINE instruments inc 2 3 Installing the USB Virtual Com Port The USB connection requires a virtual com port to be installed on the computer The necessary driver can be provided by Greyline or downloaded from http www ftdichip com Drivers VCP htm LE 10 11 12 13 14 15 Access the above url and download the driver for your particular operating system The download takes the form of a zip file Extract all the files from the zip file into a folder and note its location e g Desktop USBDriver Switch ON the Portaflow PT500 instrument and connect it to the USB port on the PC A New device found message will appear and ask you
64. op or Overwrite Response Clear the logger memory as described in Paragraph 3 6 3 Page 49 www greyline com GREYLINE instruments inc BATTERY ERRORS Battery Low Interpretation The battery has discharged to below 30 remaining This leaves the instrument with approximately 4 hours remaining depending on power usage before it needs recharging Response Recharge the internal battery at the earliest opportunity Do not leave the instrument for a prolonged period with a fully discharged battery Battery Exhausted Interpretation The battery is approaching a fully discharged state and the instrument is about to store the internal data and shut down Response Recharge the battery SET UP ERRORS Pipe OD out of range Interpretation You have entered an out of range value for the pipe outside diameter dimension i e larger or smaller than the unit or sensor can be used on Response Enter a valid number Wall thickness out of range Interpretation You have entered an out of range value for the pipe wall thickness dimension accepted range is 0 04 2 95 1mm 75mm Response Enter a valid number Lining thickness out of range Interpretation You have entered an out of range value for the lining thickness dimension acceptable range is 0 0 39 Omm 10mm Response Enter a valid number Temperature range Interpretation You have entered an out of range value for the fluid
65. operating in the Reflex mode spaced at 32 2mm apart Take a note of these details Page 20 Cast Iron Ductile Iron Copper Brass Concrete Glass Other m s PIPE LINING MATERIAL DD MM YY HH MM SS Select pipe lining material Steel Rubber Glass Epoxy Concrete Other m s FLUID TYPE DD MM YY HH MM SS Select fluid type Water Glycol water 50 50 Glycol water 30 70 Lubricating oil Diesel Freon Other m s FLUID TEMPERATURE DD MM YY HH MM SS Enter Fluid Temperature C 5 00 F 41 00 Continue SENSOR SEPARATION DD MM YY HH MM SS Site Pipe Wall Sensors Quickstart 58 00 mm 4 00 A ST Reflex Temperature 10 00 C 50 00 F Set sensor separation to 32 2 mm Press to continue AV to select sens www greyline com GREYLINE instruments inc Note Do not press ENTER until the transducers are fitted and connected to the instrument Attaching and connecting the transducers 16 Fit the designated sensors to the pipe using the appropriate guide rails as described in Paragraph 2 2 Take great care to set the separation distance as accurately as possible 17 Connect the red and blue coaxial cables between the sensors and the test instrument ensuring that the red connector on the instrument is connected to the upstream sensor Taking a flow reading 18 Once the transducers have been fitted and con
66. pipe wall material If the material is not listed select Other and enter i the propagation rate of the pipe wall material in Mild Steel metres sec Contact Greyline if this is not known S less Steel 316 S less Steel 303 Plastic Page 19 www greyline com GREYLINE instruments inc 8 10 11 12 13 14 15 If a lining thickness value was entered earlier this screen is displayed to request that you enter the lining material type If no lining thickness was entered this screen will be bypassed Select the lining material from the list provided then press ENTER If the material is not listed select Other and enter the propagation rate of the lining material in metres sec Contact Greyline if this is not known Select the fluid type from the list provided and press ENTER If the liquid is not listed select Other and enter a propagation rate in metres second If you need to alter the fluid temperature from that shown select either C or F with the cursor and press the ENTER key Enter the new temperature value and press the ENTER key The new temperature should now be indicated in both C and F Select Continue and press ENTER The SENSOR SEPARATION screen now displays a summary of the entered parameters and informs you of the type of sensor to be used the mode of operation and the distance to set up between the sensors In this example it recommends type A ST A standard sensors
67. r fluid conditions within the pipe e Fluid contains bubbles high particle density or sludge e Air in the top of the pipe Low fluid flow within the pipe e Pipe obstructions e Malfunctioning valve not opening fully or closed inadvertently Liquid content problems e Multiple liquid contents do not comply accurately to expected sound speed criteria e Very hot pipe almost turns water to steam and therefore exhibits the wrong speed characteristics could be due to reduced pipe pressure e Flashover liquid turns into a gas because of lower than required pressure Page 46 www greyline com GREYLINE instruments inc 5 2 General Troubleshooting Procedure Recharge the battery Yes If battery won t recharge then replace the charger if faulty or return the instrument for repair Is the display blank No Turn instrument OFF ON Is the display scrambled or hung up If the display is still scrambled hung up press the microprocessor reset button Return instrument for repair if fault still present No Note any active messages Are any status messages shown Yes Refer to the message table in this chapter to interpret the message and view suggested response Ensure temperature is set correctly Ensure transducer cables are connected correctly Problem probably due to non constant fluid flow Ensure pipe data been entered correctly Ensure sufficient acoustic couplant been app
68. s C 300 Ft 130 PSIG Class D 400 Ft 173 PSIG 64 20 2 00 60 20 64 82 2 38 60 06 76 88 2 39 72 10 24 00 27 76 1 75 24 26 27 76 1 88 24 00 30 00 36 00 www greyline com
69. s inc 1 3 Supplied Hardware The Portaflow equipment is supplied in a rugged IP67 carrying case fitted with a foam insert to give added protection for transportation The supplied components are shown in Figure 1 2 Te st Block a TA Transducer Cables x2 De RS232 Cable J 4 20mA Pulse Output Cable Power Supply Batt Charger Chains x2 Wi USB Cable Ultrasonic Couplant Guide Rails x2 Transducers Sensors Ax2 Bx2 Ruled Separation bar Portaflow PT500 Instrument Figure 1 2 Standard Portaflow equipment Standard equipment Portaflow PT500 instrument with backlit graphic display e Power supply with UK US European adaptors 110 240VAC e 4 20mA Pulse Output cable USB cable and RS232 C cable e 2 lengths of chain each at 3 3 metres long e Test block e Transducer cables x2 2 metres long e Transducer set A Transducers x2 e Transducer set B Transducers x2 e Set of guide rails for use with A or B transducers e Ruled separation bar 2 piece e Manual on CD Optional equipment e High temperature transducer sets A and B 20 to 200 C e Extreme temperature transducer sets A and B 20 to 300 C future option not yet available e Transducer set D used for monitoring pipes of 1500mm to 5000mm diameter over a temperature range 20 C to 80 C Kit is supplied in a separate case and includes the sensors together with ratchet
70. s inc Before you can use the Portaflow system you need to obtain the following details this information will be required when setting up the Quick Start menu e The pipe outside diameter e The pipe wall thickness and material e The pipe lining thickness and material e The type of fluid e The fluid temperature Entering the site data 1 Select Quick Start from the MAIN MENU and press ENTER You will then be presented with a series of screens in which to enter the data mentioned above 2 Select the dimension units millimetres or inches DIMENSION UNIT DD MM YY HH MM SS used to measure the pipe then press ENTER Select the dimension units mm Inches 3 Enter the pipe outside diameter dimension then OUTSIDE DIAMETER DD MM YY HH MM SS press ENTER Dimension mm Pipe outside diameter 4 Enter the pipe wall thickness dimension then PIPE WALL THICKNESS DD MM YY HH MM SS press ENTER Dimension Pipe outside diameter Pipe wall thickness 5 Ifthe pipe has a lining enter the lining thickness PIPE LINING THICKNESS DD MM YY HH MM SS If nothing is entered the instrument automatically assumes there is no lining Dimension 6 Press ENTER to continue Pipe outside diameter Pipe wall thickness Pipe lining thickness 7 Select the pipe wall material from the list provided PIPE WALL MATERIAL DD MM YY HH MM SS then press ENTER Select
71. s is the averaged value of Signal and should be a value between 800 and 1600 where 800 is approximately 50 and 1600 is approximately 100 UP DN time difference The difference in transit times between the upstream and downstream signals due to the fluid flow Propagation ps Not currently in use Signal propagation Not currently in use Fluid propagation rate This is the sound speed of the fluid calculated using the data entered by the user Fluid propagation rate Calculated from the input data concerning the fluid type and temperature Sensor separation The same value as displayed in the setup screen Page 52 www greyline com GREYLINE instruments inc 5 7 APPLICATIONS HOTLINE For applications assistance advice or information on any Greyline Instrument contact your Sales Representative write to Greyline or phone the Applications Hotline below United States Canada Toll Free Email Web Site Greyline Instruments Inc Canada 16456 Sixsmith Drive Long Sault Ont KOC 1P0 Tel 315 788 9500 Tel 613 938 8956 888 473 9546 info greyline com www greyline com Page 53 Fax 315 764 0419 Fax 613 938 4857 USA 105 Water Street Massena NY 13662 www greyline com GREYLINE instruments inc 5 8 PRODUCT RETURN PROCEDURE Instruments may be returned to Greyline for service or warranty repair 1 Obtain an RMA Number from Greyline Before shipping a product to the factory ple
72. s products to be free from defects in material and workmanship for a period of one year from date of invoice Greyline will replace or repair free of charge any Greyline product if it has been proven to be defective within the warranty period This warranty does not cover any expenses incurred inthe removal and re installation ofthe product If a product manufactured by Greyline should prove defective within the first year return it freight prepaid to Greyline Instruments along with a copy of your invoice This warranty does not cover damages due to improper installation or handling acts of nature or unauthorized service Modifications to or tampering with any part shall void this warranty This warranty does not cover any equipment used in connection with the product or consequential damages due to a defectinthe product All implied warranties are limited to the duration of this warranty This is the complete warranty by Greyline and no other warranty is valid against Greyline Some states do not allow limitations on how long an implied warranty lasts or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from state to state Greyline Instruments Inc Page 55 www greyline com GREYLINE instruments inc Appendix A Specifications GENERAL NEW DSP Measuremen
73. screen via a signal checking screen shown here Page 22 Please wait Checking signals HRA KK KKK KKK KKK IKE RIK KKK KEK AKER k kkk kk HRA KKK KKK IKK KKK IK k k IK LITI k k k k k LITI LTL LI www greyline com GREYLINE instruments inc 16 Check that the indicated signal strength on the left FLOW READING DD MM YY HH MM S of the screen is at least 2 bars ideally 3 or 4 If less than 2 bars are shown it indicates there could Signal Dim mm be a problem with the transducer spacing alignment or connections or it could be due to an y application problem EB l min Total 0 00 litres Total 0 00 litres Flow monitoring The FLOW READING screen is the one most used during normal monitoring operation It shows the instantaneous fluid flow together with totalised values when enabled In this mode you can select the flow rate measurement units by pressing keys 7 litres 8 Gallons or 9 m8 or change the display to show velocity by pressing key 4 3 4 Managing Named Sites If you want to monitor a particular site location frequently you can set up a named Site to store the installation details such as pipe dimensions and material required to set up the Portaflow PT500 system These can then be recalled later when revisiting that particular location The instrument can store up to 20 sites the first site is reserved for QUICK START and cannot be renamed subsequent sites are initia
74. site amp read flow to continue fitting the transducers and opening b c the FLOW READING screen Select Delete this site to delete the site name and values and restore it to the original EmptySite name Select Download amp save current site to save the site details and download them to a PC via RS232 USB provided the RS232 USB link is connected and correctly set up d Select Exit to return to the MAIN MENU 3 4 2 Changing a site name VIEW EDIT SITE DATA Choose from list of sites Site name Dimension units Pipe outside diameter Pipe wall thickness Pipe lining thickness Pipe wall material Lining material Sensor set Sensor mode Fluid type Save current site amp read flo Delete this Site DD MM YY HH MM SS Dim mm MyNewSite mm 58 00 4 00 0 00 Mild Steel Download amp save current site Exit To change a site name use the same method described above for generating a new site but in this case access a current site name to change rather than an EmptySite If you change a site name while the site is logging the logging will stop Page 24 www greyline com GREYLINE instruments inc 3 5 Instrument Calibration The Portaflow is fully calibrated before it leaves the factory however the following adjustments are provided to allow you to further fine tune your instrument to suit local conditions and application where necessary Apart from the zero flow offset
75. some cases it may go directly to the Flow Reading screen Some screens require you to move the cursor left and right along the display as well as up and down This is achieved using keys 5 scroll LEFT and 6 scroll RIGHT Dual function numerical keypad The block of keys shown in the centre of the keypad in Figure 1 4 are dual function keys They can be used to enter straight forward numerical data select the displayed flow units or provide quick access to frequently required control menus Page 10 www greyline com GREYLINE instruments inc 1 4 3 Power supply and battery charging Operating power is provided by an internal battery that can be charged from the utility supply using the supplied external charger When you first receive the unit you must put the battery on charge for a minimum of 6 5hrs before use A fully charged battery will power the instrument for up to 20hrs depending on the output utilisation and backlight usage If the backlight has been enabled the display is illuminated for 10 seconds every time a key is pressed If the backlight is active continuously it would reduce the available battery operating time to 8hrs Similarly if the 4 20mA output is used constantly at 20mA the battery life would reduce by 20 It is therefore beneficial to turn off the backlight and 4 20mA output facilities when they are not required When the instrument is operating in the Flow Reading mode the percentage battery charge
76. straps and guide rails for attaching to the pipe e Bluetooth printer ASL Ap1300 BT thermal type Page 8 www greyline com GREYLINE instruments inc 1 4 1 4 1 Portaflow PT500 Instrument The Portaflow PT500 is a microprocessor controlled instrument operated through a menu system using an inbuilt LCD display and keypad It can be used to display the instantaneous fluid flow rate or velocity together with totalised values or act as a data logger When operating in the data logger mode the logged data can be output directly to a PC or printer using the RS232 USB interface or stored in the instrument s non volatile memory for downloading at a later time Up to 98k logging events can be stored internally The instrument can also provide a current or variable pulse output proportional to the detected flow rate These outputs which can be used with a range of external interface devices such as those found in BMS or site monitoring systems can be calibrated to suit a particular flow range Connectors 4 20mA Pulse Output RS232 USB Output Transducer Cables la a lt Reset pin hole LCD Display Keypad Battery Charger Figure 1 3 Instrument details Transducer connections The transducers are connected to two colour coded miniature coaxial sockets located on the top of the instrument Using the red blue connector cables provided the upstream transducer should always be connected to the RED socket and the dow
77. t Technique Transit time Timing Resolution 50 pico second continuous signal level indication on display Improved Flow Velocity Range Minimum Velocity 0 1m s Max Velocity 20m s Bi directional Turn Down Ratio 100 1 Accuracy 0 5 to 2 of flow reading for flow rate gt 0 2m s and Pipe ID gt 75mm 3 of flow reading for flow rate gt 0 2m s and Pipe ID in range 13mm 75mm 6 of flow reading for flow rate lt 0 2m s Repeatability 0 5 of measured value or 0 02m s whichever is the greater NEW Reynolds Number Correction Flow velocity corrected for Reynolds number over entire velocity range Response Time lt 500ms depending on pipe diameter Selectable Flow Units VELOCITY m sec ft sec VOLUME l s I min l h gal min gal h USgals min USgals h Barrel h Barrel day m s m3 min m3 h Selectable Volume Units I gal USgals Barrel m3 Total Volume 12 Digits forward and reverse APPLICABLE FLUID TYPES Fluid Condition Clean liquids or oils that have less than 3 by volume of particulate content Applications include river water sea water potable water demineralised water glycol water mix hydraulic systems and diesel oil APPLICABLE PIPE TYPES Pipe Materials Any sonic conducting medium such as Carbon Steel Stainless Steel Copper UPVC PVDF Concrete Galvanised Steel Mild Steel Glass Brass Including
78. tened paperclip into the pinhole located in the right hand side of the instrument to operate the internal reset switch Hold the paperclip perpendicular to the instrument while doing this Page 51 www greyline com GREYLINE instruments inc 5 6 Diagnostics Display This feature is designed for advanced users and is intended to provide information that will aid the user to diagnose problems e g no signal strength When operating in the FLOW READING mode you can access a diagnostics screen by pressing the Options function key and then selecting Diagnostics from the FLOW READING OPTIONS screen This will display the operating values for the following parameters Calculated time us This is a value the instrument predicts will be the time in secs that it should take for the acoustic wave to propagate across a particular pipe size This value is ascertained from the data entered by the user i e Pipe size material sensor set etc Actual time us This is the value the instrument measures as the time taken for the acoustic wave to propagate across the pipe It is used to see if the signal is being taken from the burst at the correct time to get the strongest signal This value is normally a few us below the calculated us value If however this value is much greater than the calculated time then there is a problem with the set up Flow m s This displays flow velocity in m sec to 3 decimal places Signal strength Thi
79. the ENTER key to return to the REAL TIME DD MM YY hh mm ss xxx xx l m LOGGER screen Then select Exit to return to the DD MM YY hh mm ss xxx xx l m FLOW READING screen Logging will continue to take place in the background DD MM YY hh mm ss xxx xx l m Va Key Point There can be only one set of logged data per site If a new data log is started on a site it will clear the existing data Page 31 www greyline com GREYLINE instruments inc Monitoring the logged events as a graphic 10 If you want to view the logging progress graphically REAL TIME LOGGER DD MM YY HH MM SS rather than as text press the Logger function key 4 20mA O P is ON Dim mm to get to the REAL TIME LOGGER screen Unit min Log name Quickstart 11 Select Graph Y axis max and enter a value equal Log data to Memory to the expected maximum flow Logging interval 10 seconds Start date amp time z dd mm yy hh mm ss 12 Select View log as graph This will open the VIEW Stop date amp time dd mm yy hh mm ss LOG AS GRAPH screen shown below MM DD HH MM SS 13 You can select the data at any point in time by Remaining time mm dd hh mm ss scrolling along the time axis of the graph using the Memory Rollover Overwrite LEFT RIGHT scroll keys 5 amp 6 The data values Graph Y axis max 50 for the selected point are then shown to the left of View log as text the graph Keep the scroll key pressed for the View log as graph START NOW
80. ure is more likely if the printer battery is low 3 This message is displayed if you select Bluetooth BT CONNECTION DD MM YY HH MM SS printer from the DOWNLOAD LOG menu but the Portaflow PT500 does not have a Bluetooth BT Module Not Found module fitted Press to return to Menu or AV to try again Page 44 www greyline com GREYLINE instruments inc 4 Maintenance amp Repair This instrument does not contain any user serviceable parts The following notes are provided as a guide to general equipment care Do not disassemble this unit unless advised by Greyline Return the unit to an approved service agent or place of purchase for further advice WARNING 1 Ensure the unit is switched off and disconnected from the mains then wipe the exterior of the instrument with a clean damp cloth or paper towel The use of a solvent may damage the surface 2 The instrument contains a rechargable battery dispose safely and in accordance with the local regulations in force in the country of operation 3 Ensure all cables and connectors are kept clean and free from grease or contaminants Connectors may be cleaned with a general purpose cleaner if necessary 4 Avoid the use of excessive grease ultrasonic couplant on the sensors as this may impair the performance of the equipment Excessive grease couplant can be removed from the sensors and guide rails using an absorbent paper towel and a general purpose solvent clean
81. zero flow offset has been calibrated you can then reapply the Zero Cutoff if required 1 Stop the liquid flow 2 With the instrument in FLOW READING mode press the Velocity function key and observe the reading m s Any reading other than 0 000 indicates an offset error and in practice this will typically be in the range 0 005m s possibly higher on smaller diameter pipes If a greater figure is shown it is worth calibrating the offset to obtain a more accurate result Continue as follows 3 Press the Options key to access the FLOW FLOW READING OPTION READING OPTION screen shown Data review 4 Select Set zero flow m s and press ENTER Zero Cutoff m s Set zero flow m s 5 Press ENTER on the subsequent screen to accept Damping secs the change which will return you to the screen Totaliser shown Reset Total 6 Scroll down to select Exit and press ENTER to return to the FLOW READING screen Page 25 DD MM YY HH MM SS 0 00 0 00 10 Run www greyline com GREYLINE instruments inc Va Key Point In order to cancel any applied offset you must either read flow via Quick Start or switch the Portaflow instrument OFF amp ON Any value that you trim out using the offset adjustment will be added subtracted from the flow reading across the whole range 3 5 3 Adjusting the calibration factor Va Key Point USE THIS FACILITY WITH CARE amp ONLY WHERE NECESSARY The Portaflow instrument is fully

PT500 User`s Guide - Greyline Instruments

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