Model 8702 DP-CALC Micromanometer Operation and Service
Contents
1. Ventilation Testing Balancing Model 8702 DP CaLc Micromanometer Operation and Service Manual 1980260 Revision F July 2006 Model 8702 DP CaLc Micromanometer Operation and Service Manual 1980260 Revision F July 2006 U S INTERNATIONAL Sales and Sales and Customer Service Customer Service 800 874 2811 001 651 490 2811 651 490 2811 651 490 3824 001 651 490 3824 SHIP MAIL TO E mail address TSI Incorporated answers tsi com 500 Cardigan Road Website Shoreview MN 55126 3996 USA www tsi com TSI Copyright TSI Incorporated August 2000 2006 All rights reserved Address TSI Incorporated 500 Cardigan Road Shoreview MN 55126 USA Fax No 651 490 3824 LIMITATION OF WARRANTY AND LIABILITY Seller warrants the goods sold hereunder under normal use and service as described in the operator s manual shall be free from defects in workmanship and material for twenty four 24 months or the length of time specified in the operator s manual from the date of shipment to the customer This warranty period is inclusive of any statutory warranty This limited warranty is subject to the following exclusions a Hot wire or hot film sensors used with research anemometers and certain other components when indicated in specifications are warranted for 90 days from the date of shipment b Parts repaired or replaced as a result of repair services are warranted to be free from defects in w2. can store individual readings and compute the average of these readings Keypad Functions When pressing the keys on the front panel the DP CALC will beep to confirm the function If you press a key and the DP CALC does not beep then the DP CALC does not allow that function during the selected mode The beep function can be disabled by changing of the internal DIP switch refer to Appendix B ON OFF Key Use the ON OFF key to turn the DP CALC on and off When the instrument is first turned on it goes through a preprogrammed power up sequence that includes an internal self check First all displayable items will appear for a three seconds If a problem is detected the display will light SErr for one second and then CAL to indicate that it should be returned for servicing and calibration Operation 5 After completing the internal self check the approximate percentage of battery life remaining will be displayed This feature is accurate for alkaline batteries only When the battery voltage becomes very low LO appears on the display Pressure Key Press the PRESSURE key to display differential pressure measurements the DP CALc will automatically start in pressure mode The pressure will be displayed in inches H20 mm Hg or Pa depending on the setting of DIP switches 3 and 4 refer to Appendix B To measure pressure tubing must be connected to the pressure ports on the top back of the unit Connect th
3. goods returned under warranty to Seller s factory shall be at Buyer s risk of loss and will be returned if at all at Seller s risk of loss Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY AND LIABILITY which contains the complete and exclusive limited warranty of Seller This LIMITATION OF WARRANTY AND LIABILITY may not be amended modified or its terms waived except by writing signed by an Officer of Seller Service Policy Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our customers our service policy is designed to give prompt attention to any problems If any malfunction is discovered please contact your nearest sales office or representative or call TSI s Customer Service department at 800 874 2811 USA and 001 651 490 2811 International 150 9001 2000 For current information www tsi com CONTENTS Chapters 1 Unpacking and Parts Identification 1 2 Setting UP ooooooocccnnnnniccnnnociccnnnaniccnnnnno 3 Supplying Power to the DP CALC 3 Installing the Batteries 3 Using the Optional AC Adapter 3 Selecting the Display Units 4 Connecting the Optional Portable Printen vesie heera ae aee eaae A Ta 4 3 OperatioON iii 5 OVEE Wii doi 5 Keypad Functions oooocccccconociccconancnnncnnanos 5 ON OFF Keys iii 5 Pressure Key 4eH iin 6 Zeroing Pressure
4. measuring mode You can later return to any mode and add additional values to the already stored values Average Key Press the AVERAGE key to display the average of the stored values of the current operating mode The message AVERAGE will appear along with a number between 1 and 255 indicating how many stored values are in the memory buffer The average value is then displayed for one second To keep displaying the average value press and hold the AVERAGE key You can store additional values after the AVERAGE key has been pressed The next time the AVERAGE key is pressed the additional values are averaged with those already accumulated Operation 9 Clear Key Press the CLEAR key to erase the stored value in the buffer of the currently active function Pushing the CLEAR key in one function will not affect the value stored in the other buffer For example pushing CLEAR while measuring velocity will not affect the values stored for pressure Arrow Keys The arrow keys are used for field calibration only For details on field calibration contact TSI for a copy of Application Note TI 112 Printer Port While pressing the SAMPLE AVERAGE or CLEAR key the data is automatically transmitted to the printer port If you have the Portable Printer connected the readings will be printed Press the PRINT key to print the value shown on the display To print out the averages of the stored pressures and velocities press and hold
5. 7 Velocity Key useeesnenennennnnneennnen 7 Time Constant Key 7 Using the Clear Sample and Average Function teten ren 8 Sample KEY ora ETEA 8 Average Koy ecese en 9 Clear oia AE 10 Arrow Keys onne dan 10 Printer PO ae aerala aaaea sia 10 Appendices A Specifications B DIP Switch Settings U S 800 874 281 1 651 490 2811 Fax 651 490 3824 International 001 651 490 2811 Fax 001 651 490 3824 Chapter 1 Unpacking and Parts Identification Carefully unpack the instrument and accessories from the shipping container Check the individual parts against the list of components in Table 1 If any are missing or damaged notify TSI or your local distributor immediately Table 1 List of Components AC Adapter Optional 115 V NEMA 5 2613033 230 V European CEE 7 16 2613078 230 V Great Britian 800169 240 V Australian 2613105 Operation and Service Manual 1980260 Parts Identification Figure 1 1 DP CALc 1 Keypad 2 Display 3 Pressure Measurement Ports 4 RS 232 Printer Port 5 Battery Access Cover 2 Chapter 1 Chapter 2 Setting Up Supplying Power to the DP CALc The DP CALC can be powered in one of two ways four size AA batteries or the optional AC Adapter Installing the Batteries Insert four AA batteries as indicated by the diagram located on the inside of the battery compartment TSI ships the unit
6. To display pressure in Pa or mm Hg DIP switch 3 must be in the ON position 18 Appendix B TSI TSI Incorporated 500 Cardigan Road Shoreview MN 55126 U S A Tel 1 651 490 2811 Toll Free 1 800 874 2811 E mail answers tsi com For current information www tsi com P N 1980260 Rev F Copyright O 2006 by TSI Incorporated Printed in U S A
7. city TIME CONSTANT Values 1 5 10 15 or 20 seconds 15 POWER REQUIREMENTS Batteries Four AA size Alkaline or NiCd rechargeable AC adapter 7 VDC nominal 300 mA Approx battery life 40 hours Alkaline 15 hours NiCd PHYSICAL External dimensions 4 0 in x 6 6 in x 1 5 in 102 mm x 168 mm x 38 mm Weight with batteries 0 76 Ib 0 35 kg Display 4 digit LCD 0 6 in 15 mm digit height PRINTER INTERFACE Type Serial BAUD rate 1200 2 Accuracy is a function of converting pressure to velocity Conversion accuracy improves when actual pressure values increase 1 Pressure velocity measurements are not recommended below 1 000 ft min 5 0 m s and are best suited to velocities over 2 000 ft min 10 0 m s 16 Appendix A Appendix B DIP Switch Settings To access the DIP switches remove the batteries from the battery compartment On the inside of the battery compartment there is a window with eight DIP switches The table on the following page shows the functions for each switch Caution Make certain that power is turned off before changing DIP switch settings Figure B 1 DIP Switch Location 17 1 Velocity ft min amp m s ft min 3 Pressure in H O Pa and mm Hg 4 Pressure Pa mmHg A a comma Calibration Calibration Disabled Enabled 8 Reserved Reserved Reserved The ON position is away from the batteries and the OFF position is toward the batteries e
8. dated every second however the reading displayed is the average reading over the last time constant period For example if the current time constant is set to 10 seconds the display will show readings averaged over the previous 10 seconds updated every second This is also called a 10 second moving average Using the Clear Sample and Average Functions The DP CALC has the ability to compute the average of a number of individual stored readings Every time the SAMPLE key is pressed the currently displayed reading is added to a storage buffer When the AVERAGE key is pressed the readings in the storage buffer are divided by the number of stored readings to get the average The CLEAR key is used to clear out the storage buffer in order to start taking a new average When the DP CALC is turned off all values stored in the buffers are cleared Sample Key Press the SAMPLE key to store the currently displayed measurement The display will show SAMPLE for one time constant and a number indicating the number of stored data 8 Chapter 3 points that are in memory for about one second and then the recorded value will be displayed The individual stored values can not be recalled Only the average of the stored values can be recalled There are two different store buffers one for pressure and one for velocity You can switch between measuring modes and store data without affecting data stored in the buffer for the other
9. e other ends of the tubing to the measurement device or pressure source with the more positive pressure connected to the port marked and the more negative pressure connected to the port marked When the pressure source is connected the same way the pressure ports are marked the meter will display a positive number 6 Chapter 3 Zeroing Pressure If the zero reading of pressure has drifted the pressure function can be easily re zeroed To reset the zero first make sure that both pressure ports are exposed to ambient pressure Press and hold the PRESSURE key down for at least three seconds The DP CALC will beep and the display will show 0 in H O or whatever units have been selected When the pressure key is released the pressure will be re zeroed Velocity Key Press the VELOCITY key to display velocity The velocity will be displayed in ft min or m s depending on the setting of DIP switch 1 refer to Appendix B Time Constant Key Momentarily press and release the TIME CONSTANT key to view the current time constant To change the time constant press and hold the key The available time constant choices 1 5 10 15 and 20 seconds will sequence on the display When the desired value is displayed immediately release the key The DP CALC will always reset the time constant to 1 second when turned off Operation 7 The time constant is actually an averaging period The DP CALC display is always up
10. ead Replace the batteries batteries or plug in the AC adapter Dirty battery Clean the battery The DP CALC_ Return to factory has detected an for service internal fault 13 Possible Corrective Symptom Causes Action Display Low battery Replace or reads LO charge recharge batteries Replace with the correct AC adapter Low AC line Correct the AC voltage line voltage or use batteries contacts contacts You are trying Read or record to enter more the average clear than 255 the storage readings register and proceed The pressure or Use an alternate velocity is too measurement high method WARNING The pressure sensor is protected from damage for up to 7 psi 48 kPa or 360 mm Hg At higher pressures it can burst 14 Chapter 5 Appendix A Specifications Specifications are subject to change without notice Specifications in parentheses indicate metric equivalents PRESSURE Range 5 to 15 in H20 1245 to 3735 Pa 9 3 to 28 0 mm Hg Accuracy 1 of reading 0 005 in H O 1 Pa 0 01 mm Hg Resolution 0 001 in H20 1 Pa 0 01 mm Hg VELOCITY Range 250 to 15 500 ft min 1 27 to 78 74 m s Accuracy 1 5 of reading at 2 000 ft min 1 5 of reading at 10 00 m s INSTRUMENT TEMPERATURE RANGE Operating range 32 to 158 F 0 to 70 C Storage range 40 to 185 F 40 to 85 C AVERAGING CAPABILITY Range Up to 255 values each of pressure and velo
11. orkmanship and material under normal use for 90 days from the date of shipment c Seller does not provide any warranty on finished goods manufactured by others or on any fuses batteries or other consumable materials Only the original manufacturer s warranty applies d Unless specifically authorized in a separate writing by Seller Seller makes no warranty with respect to and shall have no liability in connection with goods which are incorporated into other products or equipment or which are modified by any person other than Seller The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated herein NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR MERCHANTABILITY IS MADE TO THE EXTENT PERMITTED BY LAW THE EXCLUSIVE REMEDY OF THE USER OR BUYER AND THE LIMIT OF SELLER S LIABILITY FOR ANY AND ALL LOSSES INJURIES OR DAMAGES CONCERNING THE GOODS INCLUDING CLAIMS BASED ON CONTRACT NEGLIGENCE TORT STRICT LIABILITY OR OTHERWISE SHALL BE THE RETURN OF GOODS TO SELLER AND THE REFUND OF THE PURCHASE PRICE OR AT THE OPTION OF SELLER THE REPAIR OR REPLACEMENT OF THE GOODS IN NO EVENT SHALL SELLER BE LIABLE FOR ANY SPECIAL CONSEQUENTIAL OR INCIDENTAL DAMAGES SELLER SHALL NOT BE RESPONSIBLE FOR INSTALLATION DISMANTLING OR REINSTALLATION COSTS OR CHARGES No Action regardless of form may be brought against Seller more than 12 months after a cause of action has accrued The
12. the PRINT key until the display counts down to zero Release the PRINT key while 0 is displayed to print 10 Chapter 3 Chapter 4 Maintenance The DP CALC requires very little maintenance to keep it performing well Recalibration To maintain a high degree of accuracy in your measurements we recommend that you return your DP CALC to TSI for annual recalibration For a reasonable fee we will quickly recalibrate the unit and return it to you in as new working condition along with a Certificate of Calibration and NIST traceability This annual checkup helps ensure that the DP CALC is always in good working condition it is especially important in applications where strict calibration records must be maintained Cases If the instrument case or storage case needs cleaning wipe it off with a soft cloth and isopropyl alcohol or a mild detergent Never immerse the DP CALC Storage When storing the DP CALC for more than a month removing the batteries is recommended This prevents damage due to battery leakage 11 12 Chapter 4 Chapter 5 Troubleshooting Table 3 lists the symptoms possible causes and recommended solutions for common problems encountered with the DP CALC If your symptom is not listed or if none of the solutions solves your problem please contact TSI Table 3 Troubleshooting the DP CALC Symptom canes Acton Symptom Causes Action No display Unit not Switch on the Low or d
13. with alkaline batteries The DP CALC is designed to operate with either alkaline or NiCd rechargeable batteries Carbon zinc batteries are not recommended because of the danger of battery acid leakage Typical battery life at 20 C is 40 hours for alkaline batteries or 15 for NiCd batteries Using the Optional AC Adapter The optional AC adapter allows you to power the DP CALC from a wall outlet When using the AC adapter the batteries if installed will be bypassed The AC adapter is not a battery charger Setting Up 3 Selecting the Display Units The DP CALLC is capable of displaying the measured values in several different measurement units as shown in Table 2 Table 2 Choices of Measurement Units Velocity in H O ft min mm Hg m s Pa If you wish to change the display units on your DP CALC see Appendix B DIP Switch Settings Connecting the Optional Portable Printer To connect the printer to the DP CALC locate the Printer Interface cable supplied with the optional printer and connect the 9 pin end labeled PRINTER to the printer and the other end to the data port of the DP CALC Always turn the DP CALC on BEFORE the printer If the printer prints random characters reset it by turning it off and then on again If necessary refer to the Portable Printer Manual 4 Chapter 2 Chapter 3 Operation Overview The model 8702 DP CALC measures differential pressure and calculates velocity It
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