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Summary of Contents for Mastech AZ8903
- Page 1 OPERATION MANUAL RS232 INTEGRAL VANE DIGITAL ANEMOMETER Model:8903/8904/8906 8903 Model: 8904 8906...
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Page 2: Cfm (Ft /Min)
The meter is most ideal for HVAC/R technicians measuring Heat / Ventilation / Air conditioning / Refrigerating wind flow and temperature. CAUTION: Objects strike the fan may damage the meter. Knot, MPH, Air Flow KM/H Volume Model: selectable Measurement AZ8903 AZ8904 AZ8906... - Page 3 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 ( 8904.8906 model only). E. Non Sleep Mode(Bypass auto power off). F.
- Page 4 FRONT PANEL DESCRIPTION Model:8903 HOLD AVERAGE MIN/MAX REC MULTI-POINT SINGLE-POINT Model:8904 ON-OFF HOLD RESET SEL-MIL/H MIN/MAX REC AVERAGE SINGLE-POINT - KNOT MULTI-POINT Model:8906 MODE-VELOCITY HOLD ON-OFF/RESET FREE AREAFLOW SEL- MPH MIN/MAX REC AVERAGE SINGLE-POINT MULTI-POINT - KNOTS BUTTON / DISPLAY 1.ON/OFF- RESET.
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Page 5: Cms (M /Second)
INDICATORS Air velocity measurement. 1.vel. 2.FLOW. Air Flow/Air volume. 3.AREA. Free area default setting. 4.Hold. Freezes the reading. Feet per minute. 5.ft/m. Feet square.(imperial) 6.ft . meter square.(metric) 7.m . Cubic feet per minute.(imperial) 8.cfm. Cubic meter per second.(metric) 9.cms. 10.C. -
Page 6: M/S
A. MEASURING AIR VELOCITY (SINGLE POINT) FEET PER MINUTE (FPM) 1. Press the ON/OFF button to turn the meter on. Meter will show full display for initial 5 seconds. (See Fig.1) 2. Unit is ready for use when LCD display shows "vel"... - Page 7 C. MIN/MAX/AVG READING ON A SINGLE POINT To obtain MIN/MAX/AVG readings on a single point. 1. Power the meter ON. 2. Place sensor in front of air flow source. 3. Press MIN/MAX REC SINGLE POINT key. The unit will begin to record the readings.The meter displays the average velocity by default.(see Fig.3) Each press of the MIN/MAX button...
- Page 8 D. AIR VELOCITY AVERAGE FOR MULTIPLE POINTS(8904,8906 only) 1. Turn the meter on and position the vane at the first point to be measured. soon as the first measurement is completed press the HOLD key,(you will hear a single beep), and release. The display will show HOLD above the reading.
- Page 9 E. NON SLEEP MODE (Disable auto power off) Power unit off; press ON and HOLD at the same time and then release ON only. An "n" appears on the LCD then you can release the HOLD key. The instrument will remain on until the OFF button is pressed.(See Fig.6 ) Fig.6 F.
- Page 10 To choose the imperial units, pressing the AVERAGE key. The LCD should display "ft/m, F" (See Fig.9). ft/m Fig.9 3. Press the MIN/MAX REC key, the LCD should display "S" (See Fig.10) . Then press the HOLD key. The LCD display 2400 or 1200 (pre-setting).
- Page 11 G.SETTING THE RS232 OUTPUT (Optional accessory) 1. Following Step F.2, you will see a "2400" (default) number on the screen. The 2400 is the default setting of Baud Rate for RS232 output. You can change the setting to "1200" by pressing HOLD Key and change the setting back to "2400"...
- Page 12 H. AUTO POWER OFF The unit will turn off automatically after 20 minutes to save the battery. This will be preceded by 3 beeps. I. MEASURING ft/m , MPH, Knot (Km/ Hour) (model 8904,8906 only) In imperial , press SEL :.MPH . KNOT Key, the reading will change from ft/m, mil/h, knot in turns.
- Page 13 The meter is now ready to measure air flow(CFM). K. TO OBTAIN AIR FLOW (CFM) AVERAGE FOR MULTIPOINTS (model 8906 only) Simply complete steps 1~4 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.
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Page 14: Table Of Contents
meter, position the fan and then press the MODE key twice, you will be into the air flow(CFM) mode and the air flow(CFM) displayed is equal to the current air velocity reading (FPM x FREE AREA = CFM) times the 1.111 square feet. We would suggest to set the free area dimension before you start measuring the air velocity so after you measure the... - Page 15 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 cover out and remove the battery .Reverse the process to install a new battery and replace the cover .
- Page 16 GENERAL SPECIFICATION Resolu- SPECIFICATIONS Accuracy tion 3%FS 80-5900 ft/min Airflow Range 0.4-30 m/sec 0.01 3%FS -10 C to 50 C 1.0 C Temperature +14 F to 122 F 2.0 F Battery Life 100 Hours Display Type LCD Display Size 37mm x 42mm(1-1/4" x 1- 5/8") Max Reading 9999 183mm(L)x76mm(W)x45mm(D) Dimensions...
- Page 17 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.
- Page 18 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 .
- Page 19 Accuracy, the Zenith of Measuring / Testing Instruments ! Hygrometer/Psychrometer Thermometer Anemometer Sound Level Meter Air Flow meter Infrared Thermometer K type Thermometer K.J.T. type Thermometer K.J.T.R.S.E. type Thermometer pH Meter Conductivity Meter T.D.S. Meter D.O. Meter Saccharimeter Manometer Tacho Meter Lux / Light Meter Moisture Meter Data logger...
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