OPERATION MANUAL RS232 REMOTE VANE DIGITAL ANEMOMETER CE
FEATURES A. Measuring Air Velocity (Single point) Feet per Minute (FPM). B. Continuous Moving Average. C. MIN/MAX/AVG reading on a single point. D. Air Velocity average for multiple points . E. Non Sleep Mode(Bypass auto power off). F. Default setting ( Imperial/ Metric) G. RS232 interface setting. H. Auto power off function. I. Direct measuring of air flow (Single point) CFM J. Obtain air flow (CFM) average for multi-point Typical Measurement a) Please place the meter in the airstream.
FRONT PANEL DESCRIPTION BUTTON / DISPLAY 1.ON/OFF. Power on or off . 2.HOLD SET/SAVE. Freezs the reading. Adjust the digit to the value needed. 3.SEL/AVG ,NXT DGT-> MULTI-P. AVERAGE . Display the average of all the measurements. Select the next digit for editing. 4.MN/MX REC SINGLE-P View the minimum or maximum , average or record value . 5.MODE : VELOCITY .Air Velocity in FPM . FREE AREA. Enter area value . VOLUME. Air Volume mode.
INDICATORS Air velocity measurement. 1.vel. 2.FLOW. Air Flow/Air volume. 3.AREA. Free area degault setting. 4.Hold. Freezs the reading. 5.ft/m. Feet per minute.(imperial) Meter per second.(metric) m/s Feet square.(imperial) 6.ft 2. meter square.(metric) 7.m 2. 8.cfm. Cubic feet per minute. 9.cms. Cubic meter per second. 10.C. Celsius unit. Fahrenheit unit. 11.F. 12.REC. Record and saved. 13.AVG. Average data 14.MIN. Minimum data 15.MAX. Maximum data 16.
A. MEASURING AIR VELOCITY (SINGLE POINT) FEET PER MINUTE (FPM) 1. Press the ON/OFF button and turn meter on. Meter will show full display when first powered on in 5 seconds. (See Fig.1) 2. Unit is ready for use when LCD display shows "vel" at upper left corner and temperature at lower right corner. (See Fig.2) Fig.2 Fig.1 vel vel FLOW AREA Hold ft/m ft 2 2 m/s m cfm cms m/s MIN REC MAX AVG B.
C. MIN/MAX/AVG READING ON A SINGLE POINT To obtain MIN/MAX/AVG readings on a single point. 1. Power unit ON. 2. Place sensor in front of air flow source. 3. Press MN/MX REC SINGLE-P key. The unit will begin to record the readings. The meter displays the average velocity by default. (See Fig.C-1) Each press of the MN/MX button cycles the display through: * Real-time readings. * MIN velocity.(Fig.C-2) * MAX velocity.(Fig.C-2) * Back to AVG velocity.(Fig.C-1) vel m/s Fig.C-1 REC AVG vel m/s Fig.
Press the HOLD key before removing the unit from the air source.Press the MIN/ MAX REC SINGLE-POINT key to view the stored data which will appear in the following order : Instantaneous measurement Minimum Maximum Average To clear the current MIN/MAX average readings, turn off the power or press and hold MN/MX key until unit beeps twice, then release. D. AIR VELOCITY AVERAGE FOR MULTIPLE POINTS 1. Turn the meter on and position the vane at the first point to be measured.
Hold vel m/s Fig.5 l l l vel l Hold m/s Fig.5-1 AVG Repeat this process until all desired points have been measured and recorded, A maximum of 8 points may be recorded at one time. 3. Once all measurements have been recorded press SEL/AVG key. The unit will display the average air velocity reading and number of points measured. ( See Fig.5-1) as an example of stored 8 points shows average air velocity measurement. E.
F. HOW TO CHANGE THE DEFAULT SETTING/IMPERIAL TO METRIC Vice Versa(METRIC TO IMPERIAL) The default measuring units can be changed by following the steps below. The unit should be turned off before commencing. 1. Press and hold the SEL/AVG key, then press the ON/OFF key once to turn the unit on. When the LCD displays " ft/m,ms " and "oC,oF" release the SEL/AVG key.(Fig.7) 2. To choose metric units press the HOLD key. The LCD should display " m/s, oC". (See Fig.8) ft/m m/s Fig.7 m/s Fig.
3. Press the MN/MX REC key, the LCD should display "S" (See Fig.10) . Then press the HOLD key. The LCD display 2400 or 1200 (pre-setting). (If Baud rate change is needed, please refer to step G.1) (See Fig.11) Fig.11 Fig.10 4. Press the MN/MX REC key again, the LCD should display "S" again. (See Fig.10) .Then press the HOLD key, the LCD will revert to a normal measurement display. The default setting is now completed.(See Fig.12) vel Hold m/s Fig.12 5.
H. AUTO POWER OFF The unit will turn off automatically after 20 minutes to save the battery. Press ON/OFF and HOLD button to disable Auto Power Off function. I. DIRECT MEASURING OF AIR FLOW (SINGLE POINT) CFM Air Velocity measurement is calculated by multiplying the air velocity readings by the free area dimensions. Free area is published by the grill and register manufacturer you are servicing. You must first determine the free area of the air source before entering it into the meter. AREA ft 2 Fig.
TO CLEAR MEMORY OF CURRENT MULTI- POINT AVERAGE READINGS. Press and hold SEL/AVG key until unit beeps twice, then release. Unit must be in velocity/FPM mode in order to clear current average readings. J. TO OBTAIN AIR FLOW (CFM) AVERAGE FOR MULTIPOINTS Simply complete steps 1~3 in D. Once all the multi-point average is determined: 1. Press MODE button once and confirm correct free area setting is locked into instrument. (if free area setting must be adjusted make necessary changes now.) 2.
We would suggest to set the free area dimension before you start measuring the air velocity so after you measure the air velocity, you can jump to the air flow mode to view the cubic feet per minute without further changing the free area dimension. Cubic equations: CFM (ft3/min) = Air Velocity (ft/min)xArea (ft2) CMM (m3/min) = Air Velocity (m/sec)xArea (m2) x 60 Units Conversion Table: 1 m/s= 1 ft/min= 1 knots= 1 km/hr= 1 mph= m/s 1 0.00508 0.5144 0.2778 0.4464 ft/min 196.87 1 101.27 54.69 87.
TROUBLE SHOOTING ? LOW BATTERY When the reading of display is flashing, or no display , please change the 9 volt battery in the meter . Replace battery procedure: Remove the screw from the lower back of the meter. Lift the panel out and remove the battery .Reverse the process to install a new battery and replace the cover . ? E6 Indicates the related circuits or parts of thermistor are failed. Send them back to the store you have bought for repairing.
GENERAL SPECIFICATION ResoluAccuracy tion SPECIFICATIONS Airflow Range Temperature Battery Life 80-6900 ft/min 1 2%FS 0.4-35 m/sec 0.01 2%FS -10oC to 50oC 0.1 0.6oC o 0.1 1.0oF o +14 F to 122 F 100 Hours Display Type LCD Display Size 37mm x 42mm(1-1/4" x 1- 5/8") Max Reading 9999 Dimensions 181mm(L)x71mm(W)x38mm(D) Fan Diameter 70mm(2-7/8") RS232 output FORMAT : TXXX.XF, VXXXXFTM TXXX.XC, VXXXXMPS Auto power off : Approx. 20 minutes Operating Humidity : Max.
Connection procedures: 1.Plug the optional accessory RS232 cable onto the DC jack port ( at the right side of the meter) 2.Instert the D-sub 9P type connector onto computer's Com.1 or 2 port or.... 3.Start to set up RS232 software by inserting the CD-ROM or Floppy diskette. 4.When installing the RS232 software ,please follow the operation manual procedure in the software package.
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 to be returned along with good packing to prevent any damage in shipment and insured against possible damage or loss .
