HERE - Tech Instrumentation
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1. Fig G Fig H If there are more than one outlet you could press ENTER key again to repeat the procedure from outlet size input You could measure outlet as many times as you need After measuring more than one outlet volume you could press Axm key to review the sum of all outlets Pressing or W to review the last outlet volume CAPACITY OUTLET SIZE While in normal mode long pressing mope to enter air volume then short press mope to enter capacity mode To measure the capacity put the vane on the Inlet then press ENTER to count the 60 second average Temp amp RH Fig I countdown will show on left top corner of LCD and meter beeps after 60 second is up Then the meter enters outlet size setting automatically Note 1 There are three choice to enter the size e Length amp Width This is the default choice Press W key to select the setting digit first then press A key to select the appropriate value 0 9 When select the value the value will show from 0 to 9 in cycle After entering length short press ENTER to enter width setting Repeat the procedure of length setting then short press ENTER again to finish the size setting and enter next step Flg J Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy e Diameter While in default outlet setting mode length pressing ENTER key for over two seconds to choose diameter setting Press W key to select the setting digi2. During this 60 second time the vane should move along the whole outlet to cover each area so the measured data could be more accurate The count down number displayed on the top left corner as areminder and meter also beeps when 60 seconds is up After time is up 60 seconds average volume will display on the LCD as Fig 0 08 CAP AVG CAP p i Kw J BE Kw START Fig N Fig 0 If there are more than one outlet you could press ENTER key again to repeat the procedure from outlet size input You could measure outlet as many as you need After measuring more than one outlet volume you could press An key to review the sum of all outlets Pressing W key to review the last outlet capacity If you would like to measure more than 1 inlet please wait for 10 minutes and allow the humidity sensor to return to the room humidity or help it by home ventilation LOW BATTERY D Two level low battery indication e Level 1 Battery indicator will flash when at level 1 In this situation the meter will work normal however users should prepare new batteries e Level 2 Battery indicator will always display on the LCD while at level 2 In this situation users need to change batteries immediately 1 Open the battery cover on the rear side 2 Remove the expired batteries 3 Insert new AAA batteries and make sure the batteries are inserted with correct polarity replace the cover AC TO DC ADAPTOR The compatible A
3. WDCFM8912 Manual fingH amp F 062708 Layout 1 6 27 08 Ba WDCFM8912 USER S MANUAL DIGITAL AIR FLOW METER WITH CFM BTU TEMP HUMIDITY DP FPM MPH KPH MPS KNOTS amp WET BULB WDCFM8912 Manual finadaFr 062708 Layout 1 YY INTRODUCTION Thank you for purchasing this digital Anemo Psychrometer This unique meter is designed with 7 H V A C amp R that must have parameters in 1 The meter is designed as battery operated for Humidity Air Temp Dew Point Wet Bulb Air Velocity Air Volume and BTU The sensor is built in the remote fan and is specially protected by tunable cap While in operation please turn on the cap to get accurate temperature and humidity readings The psychrometer is a micro processor based design A must device for HVAC engineers use No need to whirl the meter or refer to charts Easy to get wet bulb dew point and BTU measurements quickly FEATURES e Tunable cap to protect sensor e Big LCD digit display e Professional remote vane e Metric amp Imperial selectable e Handheld size easy to carry e Low battery indication e Fast response amp Accurate reading e Tripod mountable for long time use e Dew Point calculated in seconds e Wet Bulb calculated in seconds e Microprocessor circuitry for reliability e Sleep and non sleep selectable e Powered by 4 AAA batteries or 9VDC adaptor e Back light for dark places MATERIAL SUPPLIED THIS PACKAGE CONTAINS e The
4. velocity is temporarily saved in meter so to press amp could view the average value minimum value and maximum value in turns Press amp again to back to normal mode The data will be re counted once the meter is powered off and turned on again When in Max Min Avg mone press the mope key to display the parameters you need Fig A Fig B p58 bw Fig A Fig B Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy AIR VOLUME OUTLET SIZE While in normal mone long pressing mope key to enter air volume mode To measure the volume the outlet size needs to be input first There are three choices to enter the size e Length amp Width This is the default choice Press W key to select the setting digit first then press A key to select the appropriate value 0 9 When selecting the value the value will show from 0 to 9 in cycle After entering the length short press ENTER to enter width setting Repeat the procedure of length setting then short press ENTER again to finish the size setting and enter next step Fig C e Diameter While in default outlet setting mode length press the ENTER key for over two seconds to choose the diameter setting Press WHOLD KEY to select the setting digit first then press A key to select the appropriate value 0 9 After selection short press enter again to finish the size setting and enter next step Fig D e Area W
5. have more than one set anemometers or users change a new fan for his old meter user should input the RH calibration data which enclosed with each fan The data will be recorded in a slip of paper and ship with fan please keep the paper well for future use There are two calibration data need to be inputted First value is Slope S and the second value is Intercept Z SLOPE VALUE S 1 While the meter is off press O Amx REC staRT at the same time for 2 seconds to enter humidity slope calibration mode LCD will display current saved S value and the last digit will flash to indicate the value is ready for edit Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy 2 If the saved S value is different from your paper press W key to move to the digit which you want to edit and then use A a key to change the value 3 Press ENTER key to save new input S value and then meter will enter second value input automatically IMPORTANT NOTE While setting the slope only input 5 digits after decimal point so user need to round off the 6th digit User should also input two digits before decimal Example 1 If the S value is 8 239678 user should input 08 23968 2 If the S value is 11 23968 user should input 11 23968 3 If the S value is 0 2396838 user should input 00 23968 Fig S Fig S INTERCEPT VALUE Z P 1 While press ENTER key save the S setting the meter will ente
6. meter e Remote vane e Battery 4 AAA e Operation manual e Hard carry case OPTIONAL ACCESSORY e ASFT KIT includes RS232 cable amp CD Ay ae 6 27 08 Ba WDCFM8912 Manual finataF 062708 Layout 1 6 4 P 27 08 a REMINDER IMPORTANT 1 Rotate the cover before measurement to ensure the measured data is correct 2 The fan and meter are sold as a kit and are Calibrated together When you need to replace the fan please see page 11 for details on fan replacement CONTROLS AND INDICATORS LCD DISPLAY LCD DISPLAY N DPWBAVGVOLCAPMAXMINC3 O o an C F RH m s ft m Mimcfm r4 yo REC HOLD cm Kw Btu h MDEA Nc WAIT START lt S gt KEY PAD 1 Power D Turn on the meter with auto sleep mode Turn off the meter at any mode When the meter is off pressing O more than two sec to enter units selection 2 MODE Pressing to select different modes Temp gt DP gt WB gt RH Velocity Pressing longer to select VOL and CAP Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy 3 ENTER To confirm the setting amp calibration 4 Mx Mn Up A Mn Pressing to view MAX MIN AVG value Press to select the value of each digit in cycle 5 REC START To start measuring volume or capacity without waiting 6 HOLD Down A In basic modes pressing this key to hold the current reading then pressing this key again to unl
7. C to DC adaptor is 9V and at least 200mA AVAILABLE SIZE RANGE Please refer to below input size range Please be reminded that in metric L W D the value after decal is not selectable L W D AREA cm 000 0 999 0 00000 99999 inch 000 0 999 9 00000 99999 Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy RS232 SOFTWARE SOFTWARE We have compatible software and cable which is design for the meter please contact your supplier for details INTERFACE OF RS232 A 9600 bps 8 data bits no parity B Format Tx ASCII code by every sec while meter is on VXXX XMPS FTM TXXX XC F HXX X AXXX XC F wXXX XC F VXXXXX XCMM CFM UXXXXX XKW BTU Where The 1 value is velocity the 2nd value is Air temp the 3 value is Humidity the 4th value is Dew Point the 5th value is Wet bulb the 6th value is AIR Volume the 7th value is Capacity The x here means one of 01112II9I C Format for error value E01 Probe is not connected E02 Under flow E03 Over flow See more in page The unit for error code is Nul EX V0O10 5MPS TEO2Nul H66 7 dEO4Nu wEO4Nul v00020 5CMM TROUBLESHOOTING gt Power on but no display a Make sure the time of pressing key is more than 0 1 second b Check that the batteries are in place and in good contact with correct polarity c Replace a new battery and try again d Remove the battery for one minute and put back again Display disappear a Check whether t
8. he low battery indicator was displayed before Display faded if yes replace with new batteries b Turn on the meter by pressing D Amm key to disable auto power off function for longtime using 3 E1 a The probe is disconnected or damaged 4 E2 a The value is underflow 5 E3 a The value is overflow 4 E4 a The original data that is relative to this value error 5 ES a Out of meter display range as N Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy 6 E6 a the value is not calculated completely 7 E 11 a Humidity Calibration error SPECIFICATION TEMPERATURE 4 to 140 F 20 to 60 C Accuracy 1 F 0 6 C Resolution 0 1 F 0 1 C RELATIVE HUMIDITY 0 to 100 RH Accuracy 3 at 10 to 90 RH cal temp 5 at other range Resolution 0 1 DEW POINT 90 to 158 F 68 to 70 C Resolution 0 1 C WET BULB TEMPERATURE 7 6 to 158 F 22 to 70 C Resolution 0 1 C AIR VELOCITY 1 to 114 ft s 0 3 to 35 m s Accuracy 5 Resolution 0 1 AIR VOLUME 0 to 99999 cfm 0 to 99999 m3 s Accuracy 5 Resolution 0 1 0 9999 9 or 1 10000 99999 ADDITIONAL FEATURES D BTU CAPACITY 0 to 99999 BTU H KW Resolution 0 1 0 9999 9 or 1 10000 99999 Dimension HxWxD Vane 6 7 x 3 x 1 6 170 x 77 x 40mm Meter 6 9 x 2 8 x 1 3 175 x 70 x 33mm Power 4 AAA batteries or 9V gt 200mA adaptor FAN REPLACEMENT If users
9. hile in diameter setting mode press the ENTER key for over two seconds to enter the area setting Press WOLD KEY to select the setting digit first then press A key to select the appropriate value 0 9 e After selection short press ENTER again to finish the size setting D and enter next step Fig E VOL nnon UUJU UUJU jU 00838 NOTE Refer to page 9 for the range of each size input mode AIR VOLUME MEASUREMENT After short pressing ENTER to finish and leave size setting there are 20 second waiting time for you to put the vane to the grill During the 20 second waiting time the count down number 6 Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy displayed on top left corner and meter also beeps when time is B VOL up Fig F If no need to wait for 20 m s seconds just press REC START i WAIT key to start measuring the volume right away Fig F After starting measuring the volume the meter will automatically count the volume for 60 seconds to give a average value Fig G During this 60 second time the vane should move along the whole outlet to cover each area so the measured data could be more accurate The count down number displayed on the top left corner as areminder and meter also beeps when 60 seconds is up After time is up 60 seconds average volume will display on the LCD as Fig H AVG VOL Bag 388 START
10. ock the holding Pressing to select the setting digit 7 Power A Mn When the meter is off pressing more than two sec to enter non sleep mode 8 Power AM Mn 4 WHOLD Pressing more than two seconds to enter RH calibration mode 9 ENTER AHOLD D Pressing to turn on off the backlight POWER ON OFF amp UNIT SELECTION Press to turn on the meter with auto sleep mode Press again to turn off the meter at any mode When the meter is off pressing more than two seconds to enter units selection mode RH m s Mim Kw When in unit selection mode press A or W 0 to select the unit then press ENTER to Save and meter will be powered on automatically Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy BASIC MEASUREMENT Basic measured parameters of this model BASIC MEASUREMENTS e Air temp e Humidity e Dew Point e Wet Bulb e Air Velocity EXTENDED MEASUREMENTS e Air Volume e Sum of Volume e Capacity e Sum of Capacity When powered on the air temperature is the default value to show on the LCD To review the other basic parameters just press the mobE key then each parameter will be displayed in turn While in basic mode press mope for over 2 seconds to enter extend measurement mode You can also press mode key to switch between volume and capacity a MAX MIN amp AVG When the meter is powered on air temp dew point WBT humidity amp
11. r intercept input automatically The last digit will flash to indicate the Z value is now ready for edit 2 If the last saved Z value is different from your paper press W402 key to move to the digit which you want to edit and then use An key to change the value 3 Press ENTER key to save new input Z value and then meter will be back to normal RH value mode IMPORTANT NOTE While setting Z value only input 3 digits after decimal point so user need to round off the 4th digit Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 Sy User should also input four digits before decimal All the Zis a negative value but LCD will not appear the negative icon Example 1 If the Z value is 928 8683 user should input 09 28868 2 If the Z value is 1928 868 user should input 19 28868 3 If the Z value is 89 68482 user should input 00 89685 Fig T Fig T RETURN AUTHORIZATION Authorization must be obtained from the supplier before returning items for any reason When requiring a RA Return Authorization please include data regarding the defective reason the meters are returned along with good packing to prevent any damage in shipment and insured against possible damage or loss das ar
12. t first then press A key to select the appropriate value 0 9 623 om UUIU Fig I Fig J e Area While in diameter setting mode pressing ENTER key for over two seconds to enter area setting Press W key to select the setting digit first then press A key to select the appropriate value 0 9 After selection short press ENTER again to finish the size setting and enter next step Fig L 033o G0B38 o Fig K Fig L AP gt CAPACITY MEASUREMENT After short pressing ENTER to finish and leave size setting there are 90 or 20 second note 1 waiting time for you to put the vane to the grill During above waiting time the count down number displayed on top left corner and meter also beeps when time is up Fig M If no need to wait for 90 or 20 seconds just press REC START key to start measuring the capacity right away Note 1 If you have many outlets to measure while you start to measure B CAP the second one the waiting time will adjust to 20 sec automatically m s WAIT 90 sec is the buffer for sensor to stable No matter in inlet or outlet suggest to move the vane along the grill to get accurate values Fig M After starting measuring the capacity the meter will automatically count the capacity for 60 seconds to give an average value Fig N 8 Ay ae WDCFM8912 Manual finad2F 062708 Layout 1 6 27 08 ee
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