Model 8610 EVERWATCH® Face Velocity Monitor
Contents
1. in fume hoods Adequate face velocity is a key component needed to protect fume hood users An adequate face velocity contains all the contaminants inside of the fume hood The fume hood exhaust system produces a pressure differential between the hood interior and the laboratory causing air to be drawn into the hood In a properly designed and used fume hood the air drawn into the fume hood is the same everywhere in the sash plane opening The speed the air enters the fume hood is called the face velocity The Model 8610 EVERWATCH Face Velocity Monitor continuously monitors fume hood face velocity by measuring the air velocity across a sensor mounted in the sidewall of the hood The sensor and opening in the fume hood are driven by the same pressure differential so the velocity across each is related The EVERWATCH device informs the hood user when the fume hood has an adequate face velocity by indicating the actual face velocity and turning on a green light If the face velocity is inadequate or too great a red alarm light and audible alarm turn on The EVERWATCH consists of two pieces a velocity sensor and monitor electronics The velocity sensor is mounted in the sidewall of the fume hood usually near the top of the sash The monitor electronics are typically mounted about eye level on the front of the fume hood cabinetry The velocity sensor continuously measures the face velocity and provides the face velocity information to the monitor e2. HVAC Controls Laboratory Model 8610 EVERWATCH Face Velocity Monitor Operation and Service Manual P N 1980154 Revision E October 2002 TSI U S AND CANADA Sales amp Customer Service 800 874 2811 651 490 2811 Fax 651 490 3824 SHIP MAIL TO TSI Incorporated ATTN Customer Service 500 Cardigan Road Shoreview MN 55126 USA Model 8610 EVERWATCH Face Velocity Monitor Operation and Service Manual October 2002 P N 1980154 Rev E OTHER COUNTRIES Sales amp Customer Service 001 651 490 2811 Fax 001 651 490 3824 E MAIL answers tsi com WEB SITE www tsi com Copyright TSI Incorporated October 2002 All rights reserved Part number 1980154 Rev E 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 de
3. Check velocity sensor location Make sure it matches installation instructions The sensor should directly reference room air If required mount a fume hood vent kit The EVERWATCH must be calibrated when installed or moved The span may be incorrectly adusted Check and adjust the display averaging period Check the effects of the room air distribution system on the EVERWATCH Turn the hood off O Measure the air velocity at hood face Measure the air velocity at the velocity sensor The terminal throw velocity of a diffuser at the hood face should be less than 50 of the average hood face velocity The terminal throw velocity at the velocity sensor should be less than 10 ft min 0 04 m s For example if the hood is running at 100 ft min the terminal throw velocity at the hood face should be less than 50 ft min The lower the terminal flow velocity the better If the terminal throw velocity of a diffuser exceeds the values listed above move or readjust the diffuser Check cleanliness of the velocity sensor Remove all contaminants Check the velocity sensor for obstructions Remove any obstructions Calibrate the EVERWATCH Check that correct output is selected VOLt selects a 0 10V output CUrr selects a 4 20 mA output Velocity exceeded 1500 ft min Adjust fan speed or balancing damper Check the sensor wiring and connections for continuity Replace the velocity sensor and or sensor to monitor cable and cali
4. almost maintenance free An occasional sensor cleaning and periodic calibration checks are all that are needed to insure that the EVERWATCH is operating at optimum performance 14 Part Two Calibration EvERWATCH should be calibrated annually Refer to Calibration section instructions The velocity sensor should be cleaned prior to calibration Velocity Sensor Cleaning Significant build up of dust or dirt on the velocity sensor can degrade its performance It is recommended that the velocity sensor be periodically inspected for accumulation of contaminants The frequency of these inspections is dependent upon the quality of the room air drawn across the sensor Quite simply if the air in the room is dirty the sensor will require more frequent examinations and cleaning Tum power to EVERWATCH off prior to cleaning the velocity sensor Do not use compressed air to clean the velocity sensor Accumulations of dust or dirt can be removed with a soft bristled brush such as an artist s brush Alcohol acetone or trichlorethane may be used as a solvent to remove other contaminants if required Do not attempt to scrape contaminants from the velocity sensor The velocity sensors are quite durable however scraping will cause mechanical damage and possibly break the sensor Mechanical damage due to scraping voids the velocity sensor warranty Replacement Parts All components of the EVERWATCH are field replaceable Contact TSI at 65
5. 1 490 2811 or your nearest authorized TSI manufacturer s representative for replacement part pricing and delivery 800320 Velocity Sensor 800325 Sensor Cable Technical Section 15 Troubleshooting Chart Symptom Possible Cause Corrective Action Display is blank Alarm relays don t work dATA Err flashing on display 16 Fuse is blown No power to monitor Monitor is defective Alarms are turned off Incorrect wiring Relay may be defective Monitor was hit by electrical disturbance Measure voltage at pins 1 and 2 on monitor The voltage should nominally be 24 30 VAC If correct voltage is measured internal monitor fuse is probably blown Unplug 10 pin connector from monitor for 2 minutes The internal fuse will automatically reset Plug unit back in and check display If display is still blank check all wiring etc If no problems are found replace monitor If zero volts are measured see No power to monitor Wiring is incorrect Check all wiring If separate transformer is not installed for each system double check polarity and for ground loops Verify circuit breaker is on Verify transformer primary measures 110 VAC Verify transformer secondary measures 24 30 VAC Verify voltage on pins and 2 of monitor is 24 30 VAC If proper voltage is found between pins 1 and 2 of the monitor all wiring has been checked fuses have been reset and screen is still blank the monitor is p
6. RAM e 21 APPENDIX C ACCESS CODES jit cent sessenta aie ian 22 How to Use This Manual The EVERWATCH Operation and Service Manual describes how to operate configure calibrate maintain and troubleshoot the Model 8610 EVERWATCH Face Velocity Monitor The manual is divided into two parts Part one describes the EVERWATCH unit and how to interface with the device This section should be read by users facilities staff and anyone who requires a basic understanding of how the device operates Part two describes the technical aspects of the product which include operation configuration calibration maintenance and trouble shooting Part two should be read by personnel programming or maintaining the unit TSI recommends thoroughly reading this manual before changing any software items Note This operation and service manuals assumes that the EVERWATCH has been properly installed Refer to the Installation Instructions if there is any question as to whether the EVERWATCH has been installed properly iii Part One User Basics This section provides a brief but thorough overview of the EVERWATCH product by maximizing information with minimal reading These few pages explain the purpose The Instrument and the operation Useful user information Operator panel Alarms of the product Technical product information is available in Part Two of the manual The Instrument The EVERWATCH measures and reports face velocity
7. The analog output has a velocity range between 0 and 1000 ft min 0 to 5 00 m s With this range a 100 ft min 51 m s equals an output of 1 volt 5 6 mA and a 1000 ft min 5 00 m s equals an output of 10 volts 20 mA The Prot item selects the communications protocol used to interface with the building management system Contact TSI if further information is needed regarding interfacing the monitor to the building automation system through RS 485 communications The Addr item selects the main network address of the individual fume hood monitor Each unit on the network must have a unique address There is no priority between the RS 485 and keypad The most recent signal either RS 485 or keypad will initiate a change RS 485 communication allows the user to access all items except calibrations items The PASS item selects whether an access code is required to enter the calibration menu If the access code is ON a code is required before the menu can be entered Conversely if the access code is OFF no code is required to enter the menu On or Off 0 10 volt VOLt or 4 20 mA CUrr Modbus 0 or Cimetrics 1 1 247 ON or OFF VoLt Modbus 0 OFF TI OM Weg CALIBRATION End MENU END The End item identifies that the end of the calibration menu has been reached NONE This is not a menu item This identifies that the end of the menu has been reached Calibration The EVERWATCH Face Veloci
8. To turn the audible alarm back on press the MUTE key once TEST Key The TEST key when pressed initiates an instrument self test The monitor display indicator lights audible alarm and internal electronics are tested when the TEST key is pressed RESET Key The RESET key is used to reset the low and high face velocity alarm lights alarm contacts and audible alarm when the instrument is configured for alarm latch operation see ALARM RESET The alarms are reset only after the face velocity has returned to normal range and the RESET key is pressed The RESET key is also used to reset error messages Alarms EVERWATCH has visual red lights and audible alarms to inform the user of changing conditions The alarm levels set points are determined by facilities personnel which could be safety officer health inspector etc The alarms audible and visual will activate whenever the preset alarm level is reached Depending on how the alarms are programmed they will activate when the face velocity is low or inadequate high or too great When the fume hood is operating in the safe range no alarms will sound Visual Alarm Operation The red low alarm light is on when a low or inadequate face velocity exists The red high alarm light is on when a high or excessive face velocity exists Audible Alarm The audible alarm continuously sounds when the face velocity is in an alarm condition The audible alarm can be temporarily silenced by pressi
9. brate the EVERWATCH 17 Symptom Possible Cause Corrective Action Go into CONFIGURE menu RS 485 type item The protocol must match host system Select correct interface Monitor does not respond to RS 485 communications 18 Network protocol is incorrect Incorrect network address Incompatible software The network address at the building automation system and at the monitor must match The network address must be unique for each monitor Data sent to monitor may be in form that the EVERWATCH cannot recognize Part Two APPENDIX A Specifications Model 8610 Model 8610 English Units Metric Units Face Velocity Display Ran BCS seres Wied setas eis SS 0 1000 ft min 0 to 5 00 m s displays to 1500 displays to 7 60 Resolution ceesceeseeeeceeeeeseceeeeneeeneeees 5 ft min 0 02 m s ACCULACY esssesi sd shes e ETE eed 10 or 10 ft min 10 or 0 05 m s at calibrated position whatever is greater whatever is greater Display Update eee eee eee eeeeeee 0 5 second 0 5 second Low Alarm Range o 5 to 1000 ft min 0 02 to 5 00 m s High Alarm Range 40 to 1000 ft min 0 20 to 5 00 m s Alarm Contact ve secs esera e eae SPST N O max current 5 amps max voltage 150 VDC 250 VAC Minimum switch load 10 mA 5 VDC Face Velocity Analog Output EY PO iscevteantiteweuatesrrentaussevacireeseeurieseesbeneds 0 10 VDC or 0 10 VDC or 4 20 mA 4 20 mA RANDes sense ied i n
10. dicated on the display Press the W arrow key once CONF should be indicated on the display Press the NORMAL key The first menu item LAL is now displayed Note If COdE is flashing an access code must be keyed into the unit before access will be allowed The access codes are printed on the last page of the manual Press the NORMAL key to select LAL low alarm menu item The current value will be displayed Press the arrow keys A W to change the item value to 60 Press the NORMAL key to save the value and to exit to the menu LAL will be displayed Technical Section Note The monitor will flash SAVE and beep which indicates data has been correctly saved 7 Press the V arrow until End is displayed 8 Press the W key once to exit the menu Menu and Menu Items The EVERWATCH has two menus a configuration CONF menu and a calibration CAL menu All the software programming takes place inside of these two menus The configuration menu allows you to tailor the unit to your specific application The calibration menu is only used when calibration is required Changing any item is accomplished by using the keypad or if communications are installed through the RS 485 Communications port If you are unfamiliar with the keystroke procedure please see Programming Software for a detailed explanation This section provides the following information e Complete list of menu and all menu items e Gives the menu or prog
11. ds an excellent reference is available that covers in detail traversing fume hoods The reference is ASHRAE 110 1995 Method of Testing Performance of Laboratory Fume Hoods section 6 2 face velocity measurements Press the NORMAL key to indicate the current face velocity Note On initial calibration the keypad is disabled and SEnS flashes on and off for approximately 30 seconds while the sensor stabilizes Compare the face velocity indicated on the EVERWATCH display to the face velocity measured by the portable air velocity meter Use the A W keys to adjust the EVERWATCH face velocity until it matches the face velocity measured by the portable air velocity meter Press the NORMAL key to save the calibration span data HCAL is indicated on the display Press the W key until End is indicated Unit automatically returns to normal operation Press the W key once to exit the calibration menu Verify calibration of EVERWATCH matches the portable air velocity meter Calibrating the span on the EVERWATCH may be an iterative process that takes one to three trials to set an accurate calibration The user must check the span after each trial until an accurate calibration is achieved Note The EVERWATCH automatically exits the calibration menu and returns to normal operation if more than five minutes elapse between keystrokes All changes to the calibration menu values are automatically saved Maintenance and Repair Parts The EVERWATCH is
12. e ees 0 1000 ft min 0 5 00 m s Resolution rea 5 ft min 0 02 m s Response Time 1 second 1 second RS 485 Communications iii Modbus or Cimetrics Modbus or Cimetrics Operating Temperature 0 0 0 ee ceeeeeeseereeteeneeeee 32 to 120 F 0 to 50 C Temperature a a cite a ea 55 to 95 F 13 to 35 C Compensated Range Input POWER acesse nenea eni 24 VAC 5 watts max 24 VAC 5 watts max Dimensions nie iie e r E E tender estais 5 in x 3 125 in x 1 in 12 7 cm x 7 9 cm x 2 5 cm Adjustable in 5 ft min 0 02 m s increments Specifications are subject to change without notice Appendix A 19 APPENDIX B Wiring Diagram TRANSFORMER P N 800420 TRANSFORMER CABLE P N 800414 P N 800320 VELOCITY SENSOR R INPUT SENSO 6 FT 4 CONN 22 AWG SENSOR CABLE P N 800325 TSI TSI INCORPORATED MAIL SHIP TO 500 CARDIGAN ROAD SHOREVIEW MN 55126 TELEPHONE 651 490 2811 FAX 651 490 3824 1 1 96 Appendix B 24VAC IN HIGH ALARM COMMUNICATION NICIN OUTPUT MODEL 8610 WIRING DIAGRAM COPYRIGI RELEASED 1 1 96 8610 EVERWATCH FACE VELOCITY MONITOR PTION TSI MODEL DESCR DRAWN BY JASON H o lt a o Zz ia MONITOR P N 800333 VELOCITY 1995 BY TSI INCORPORATED 21 APPENDIX C Access Codes These are the access codes to the calibration and configuration menus When an access code is required pressing the fol
13. fects in workmanship 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
14. g or calibrating the monitor NORMAL Light Key The green light part of NORMAL key indicates that the face velocity is within the normal safe operating range The normal light is on when the face velocity is between the low alarm set point and the high alarm set point The NORMAL key is used to gain access to the calibration and configuration menus Refer to Part two Technical Section for calibration and configuration instructions LOW ALARM Light Key The red low alarm light turns on when the face velocity drops below the low face velocity alarm set point green normal light goes off The LOW ALARM key when pressed displays the low alarm set point on the digital display HIGH ALARM Light Key The red high alarm light turns on when the face velocity exceeds the high face velocity alarm set point green normal light goes off The HIGH ALARM key when pressed displays the high alarm set point on the digital display MUTE Light Key The yellow mute light turns on when the audible alarm has been turned off The audible alarm will not sound as long as the mute light is on 2 Part One The MUTE key is used to silence and or disable the audible alarm An audible alarm can be silenced at anytime by pressing the MUTE key Pressing the MUTE key once temporarily mutes the alarm resets when velocity returns to normal range Pressing the MUTE key twice turns the yellow mute light on and permanently disables the audible alarm
15. gh alarm The high alarm activates when the velocity exceeds the high alarm setpoint The high alarm stays on until the face velocity drops 20 ft min 0 1 m s below the high alarm set point DISPLAY DSPL The dSPL item is the period of time over which the face velocity 1 20 seconds 5 seconds FILTERING readings are averaged before being displayed The longer the display PERIOD averaging period the more stable less fluctuation the display ALARM RESET Alr The ALr item selects how the alarms terminate after the unit returns to Latched or Unlatched Latched LA the safe normal velocity range UNLATCHED UnLA automatically resets the alarms when the unit reaches the safe range LATCHED LA requires the staff to press the RESET key after the unit returns to the safe range The ALARM RESET affects the audible alarm visual alarm and relay outputs which means all are latched or unlatched UONIAG JDIIUYIA I IT ALARM DISABLE ANALOG OUTPUT RS 485 TYPE RS 485 ADDRESS ACCESS CODE DSBL AOUt Prot Addr PASS The dSBL item selects whether the audible alarm can be permanently muted on or cannot off by pressing the MUTE key yellow light on The AOut item is used to select the type of analog output The analog output signal can be either 0 10 VDC VOLt or 4 20 mA CUrr The EVERWATCH has a selectable linear analog output 0 to 10 volt or 4 to 20 mA which corresponds to the measured real time face velocity
16. 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 or 651 490 2811 ii CONTENTS HOW TO USE THIS MANUAL rear iii PART ONE USER BASICS iiciin niahi a Ae Rath een ae 1 Thenst men aerae ect ede opus gas F asda a saia ga Measles 1 Operator Panel icasasissessia an a r hs hastened i 1 AIARMS ossos ath oia adro a sara O se toad af ASR ag Goal dEUS cai Ra a 3 Before Calling TSI assar 3 PART TWO TECHNICAL SECTION 5 Software Programming atra 5 Menu and Menu Items raras 8 Calibration ticas cts ah tee ev ae 13 Maintenance and Repair Paris 14 APPENDIX A SPECIFICATIONS 19 APPENDIX B WIRING DIAG
17. ily modified to fit you application The Technical section is separated into five parts that cover all aspects of the units Each section is written as independently as possible to minimize flipping back and forth through the manual for an answer The Software Programming section explains the programming sequence which is the same regardless of the menu item being changed At the end of this section is an example of how to program the monitor The Menu and Menu Item sections list all of the software items available to program and change in both the configuration and calibration menus This section covers menu items and all related information including programming name description of menu item range of programmable values and how the unit is shipped from the factory default values The Calibration section describes the required technique to calibrate the EVERWATCH unit This includes how to measure face velocity check for an adequate face velocity and zero and span the units The Maintenance and Repair Part sections covers all routine maintenance of equipment along with a list of repair parts The Troubleshooting section covers both the mechanical operation of the unit and system performance Many external variables will affect how the unit functions so it is critical to first determine if the unit is having mechanical problems i e no display on unit remote alarms don t function etc If problems
18. ke procedure 2 Place a piece of tape over the velocity sensor opening to seal off the air flow through the sensor off white colored sensor is located inside of fume hood 3 Select LCAL zero calibration Press the NORMAL key and CAL will flash for two minutes During this time the monitor automatically calibrates the sensor for zero flow Note If COME is flashing on the display the access code enable function is set to on and an access code is required to enter the calibration menu Enter the calibration menu access code code is located on last page of manual Note 2 Ifthe sensor has not been taped tAPE OVEr SEn SOr tape over sensor will be indicated on the display This message will flash for approximately two minutes Technical Section 13 10 11 12 13 14 If the sensor has not been taped by the end of this time period the calibration menu is exited and the EVERWATCH returns to normal operation CAL stops flashing and the audible alarm sounds momentarily when sensor zero is complete Remove the tape from the velocity sensor Press the W key once Confirm that HCAL is indicated on the display Note Always take a sensor zero prior to adjusting the zero span Open the sash to 60 percent of the full open position Use a portable air velocity meter to traverse the open sash area and obtain the average face velocity of the air passing into the hood Note Ifyou are unfamiliar with traversing fume hoo
19. lectronics The monitor electronics continuously report the face velocity and activates the alarms when necessary Useful User Information The monitor electronics has a green light normal operation and red alarm light low and high alarms The green light is on when the face velocity is adequate The red low alarm light comes on when the face velocity drops below a safe level The red high alarm light comes on when the face velocity exceeds a safe level The display provides additional information by continuously indicating the actual face velocity Operator Panel The EVERWATCH Face Velocity Monitor is easy to use All the information you need to know about the face velocity is displayed on the monitor s front panel In addition all configuration and calibration programming is accessible through the keypad Specific details about the EVERWATCH front panel display and controls are described on the following pages The front panel shown in Figure 1 identifies the important features display keys and lights User Basics 1 EverVAICH LOW ALARM NORMAL D M v 3 ES o ALARM 4 m v 4 z c 4 m gt 4 D 9 il Figure 1 EVERWATCH Front Panel Display Digital Display The digital display continuously indicates the face velocity and if problems with the monitoring system occurs displays error messages In addition the display indicates the menu items and menu item values when programmin
20. lowing key sequence will provide access to the required menu Key Calibration Configuration 1 RESET LOW ALARM 2 LOW ALARM TEST 3 NORMAL RESET 4 TEST HIGH ALARM 5 RESET LOW ALARM If the access code is entered correctly the first menu item is displayed The audible alarm sounds briefly each time a keystroke has been entered The access code must be entered within 40 seconds approximately eight seconds per keystroke If more than eight seconds elapses between keystrokes the monitor returns to the normal operational mode The audible alarm sounds an error message Em flashes on the display and the configuration menu is exited if an incorrect access code in entered TSI TSI Incorporated 500 Cardigan Road Shoreview MN 55126 U S A Web www tsi com
21. ng the MUTE key once or permanently by pressing the MUTE key twice yellow light comes on The audible and visual alarms can be programmed to either automatically turn off when the unit returns to the safe range or to stay in alarm until the RESET key is pressed See ALARM RESET Before Calling TSI The manual should answer most questions and resolve most problems the user may encounter If you need assistance or further explanation contact your local TSI representative or TSI TSI is committed to providing high quality products backed by outstanding service User Basics 3 Please have the following information available prior to contacting your authorized TSI Manufacturer s Representative or TSI e Model number of unit e Software revision level e Facility where unit is installed Found on back of monitor electronics For the name of your local TSI representative or to talk to TSI service personnel please call TSI at U S AND CANADA OTHER COUNTRIES Sales amp Customer Service Sales amp Customer Service 800 874 2811 651 490 2811 001 651 490 2811 651 490 3824 001 651 490 3824 SHIP MAIL TO E MAIL TSI Incorporated answers tsi com ATTN Customer Service 500 Cardigan Road WEB SITE Shoreview MN 55126 www tsi com USA 4 Part One PART TWO Technical Section The EVERWATCH is ready to use after being properly installed and calibrated The monitor is programmed with a default configuration that can be eas
22. ramming name e Defines each menu items function what it does how it does it etc e Gives the range of values that can be programmed e Gives default item value how it shipped from factory Figure 3 shows a chart of all the Model 8610 standard monitor menu items CALIBRATION CONFIGURATION Calibration zero LCAL Low Alarm L_AL Calibration Span HCAL High Alarm H_AL Access Code PASS Display Filtering Period dSPL Calibration End End Alarm Reset ALr Alarm Disable dSbL Analog Output AOUt RS 485 Type PrOt RS 485 Address Addr Access Code PASS Configuration End End Figure 3 Menu Items Model 8610 Standard Monitor 8 Part Two UO199S JVIIUYIA I MENU ITEM CALIBRATION ZERO CALIBRATION SPAN ACCESS CODE CALIBRATION MENU END HCAL PASS End CALIBRATION MENU SOFTWARE ITEM DESCRIPTION NAME LCAL The velocity CALIBRATION ZERO item is used to calibrate the EVERWATCH velocity sensor at zero flow A sensor zero should be established prior to adjusting the sensor span see Calibration section following menu item section The velocity CALIBRATION SPAN item is used to calibrate the EVERWATCH velocity sensor to the average face velocity as measured by a portable air velocity meter A sensor zero should be established prior to adjusting the sensor span see Calibration section following menu item section The PASS item selects whether an access code is required to enter
23. robably defective Replace monitor Press LOW or HIGH alarm key The individual alarm set points will display If all alarm set points are zero alarm relay is not active so relay will not be required to change state Check the wiring from EVERWATCH relay s output to the device that is connected to the relay Disconnect the wiring from relay contact pins 7 and 8 for low alarm relay and pins 3 and 4 for high alarm relay Connect an ohmmeter to relay terminals to verify contact open and closes Activate the alarm to manually trip the relay This may require opening or closing sash If relay responds contact opens and closes the device connected is incompatible or defective If relay doesn t respond relay is defective may be caused by incompatible device Replace monitor All data may be lost or changed Review all configuration parameters ATA Err is removed by pressing the RESET key Part Two Symptom Possible Cause Corrective Action The display does not indicate zero at zero flow The display fluctuates The indicated face velocity and the average face velocity are not the same The analog output doesn t display correctly SEnS Err is indicated on the display Velocity sensor Calibration required Calibration Room turbulence Sensor is dirty Calibration is off Incorrect output selected Velocity is too high Possible bad sensor or sensor cable Technical Section
24. still exist look for performance problems i e doesn t read correctly display fluctuates etc The first step is to determine that the system is mechanically operating correctly followed by modifying the configuration to eliminate the performance problems Software Programming The EVERWATCH is a quick and easy to program There are two menus that contain all the items that can be changed The configuration menu changes items that enhance the monitor s performance i e alarm values display averaging etc The calibration menu has the menu items needed to properly calibrate the EVERWATCH Regardless of the menu item you want to change the procedure described below is the same This section covers programming the instrument through the keypad and display If programming through RS 485 communications use the host computer s procedure The changes take place immediately upon saving data in the instrument Technical Section 5 Keystroke Procedure There are three keys that are used to program the instrument The NORMAL key is used to enter menus menu items and to exit menu items The A W keys are used to scroll through menu change the values of menu items Depending on the item type the values may be numerical or a specific property on off The step by step procedure given below is graphically shown in Figure 2 The procedure to change a menu item value is the same regardless of the menu or menu item 1 Press
25. the calibration menu If the access code is ON a code is required before the menu can be entered Conversely if the access code is OFF no code is required to enter the menu The End item identifies that the end of the calibration menu has been reached ITEM RANGE NONE NONE ON or OFF NONE DEFAULT VALUE Unit needs to be calibrated No default value exists Unit needs to be calibrated No default value exists OFF This is not a menu item This identifies that the end of the menu has been reached Or OM Wed CONFIGURATION MENU MENUITEM SOFTWARE ITEM DESCRIPTION ITEM RANGE DEFAULT NAME VALUE LOW ALARM L_AL The LOW ALARM item sets the low face velocity alarm setpoint A Off 5 1000 ft min 60 low alarm condition is defined as when the face velocity falls below the low alarm setpoint Off 0 02 5 0 m s HIGH ALARM HAL The HIGH ALARM item sets the high face velocity alarm setpoint A Off 40 1000 ft min 140 high alarm condition is defined as when the face velocity is greater than the high alarm setpoint Off 0 2 5 0 m s ALARM CONSTRAINTS The alarms operate as follows 1 There is a five second delay between the time an alarm occurs and the time that the alarms lights audible alarm and alarm relays activate 2 Low alarm The low alarm activates when the velocity drops below the low alarm setpoint The low alarm stays on until the face velocity rises 20 ft min 0 1 m s above the low alarm set point 3 Hi
26. the NORMAL key to access the main menu CAL should be indicated on the display If CONF menu is required press the W arrow key once CONF should be indicated on the display Press the NORMAL key when the correct menu is displayed The first menu item should now be displayed Note If COdE is flashing an access code must be keyed into the unit before access will be allowed The access codes are printed on the last page of the manual Press the A W keys until menu item desired is displayed Press the NORMAL key to select the menu item The current value will be displayed Use the A W keys to change item value Press the NORMAL key to save the value and to exit to the menu Note The monitor will flash SAVE and beep which indicates data has been correctly saved Press the W key until End is displayed Press the W key once to exit the menu or press the NORMAL key to exit to the main menu calibration or configuration menu can then be selected If more than one item is to be changed skip step 7 and 8 until all items in that menu are changed Part Two Figure 2 Programming Flow Chart Programming Example The following example demonstrates the programming keystroke sequence In this example the face velocity low alarm will be programmed for 60 ft min 1 Press the NORMAL key to access the main menu CAL will be in
27. ty Monitor is a very versatile device which will work with a variety of fume hoods Because fume hoods vary in design and performance the EVERWATCH must be calibrated on the fume hood it is installed The calibration procedure is quite simple and can be accomplished in a matter of minutes with a little preparation and practice Every EVERWATCH shipped has an orange WARNING label attached indicating calibration is required WARNING Unit is not calibrated Remove label only after field calibration is complete This label is to be removed only after field calibration is complete Before beginning to calibrate the EVERWATCH take a few minutes to review the calibration procedures below The following equipment is required to perform the calibration e Tape e Portable Air Velocity Meter such as TSI VELOCICALC or VELOCICHECK The calibration procedure can be broken down into the following e Entering the calibration menu e Establishing a zero flow velocity e Setting the velocity calibration span e Exiting the calibration menu Calibration Procedure Power up the EVERWATCH and allow the unit to warm up 30 to 60 seconds before beginning the calibration procedure On initial power up the keypad is disabled and SENS is indicated on the display for approximately 30 seconds Note All menu items described below are found in the Calibration menu 1 Select CAL calibration menu See Software Programming if not familiar with keystro
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