Specification; Additional Features; Fan Replacement - General WDCFM8912 User Manual

Digital air flow meter with cfm, btu, temp, humidity, dp, fpm, mph, kph, mps, knots & wet bulb
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6. E 6
a) the value is not calculated completely.
7. E 11
a) Humidity Calibration error.

SPECIFICATION

TEMPERATURE: -4º to 140ºF (-20º to 60ºC)
Accuracy: ±1ºF (±0.6ºC),
Resolution: 0.1ºF (0.1ºC)
RELATIVE HUMIDITY: 0 to 100% RH
Accuracy: ±3% at 10 to 90%RH (cal. temp.)
±5% at other range Resolution: 0.1 %
DEW POINT: -90º to 158ºF (-68º to 70ºC)
Resolution: 0.1ºC
WET BULB TEMPERATURE: -7.6º to 158ºF (-22º to 70ºC)
Resolution: 0.1ºC
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:

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 >200mA adaptor.

FAN REPLACEMENT

If users 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
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.
O
+ L
Mx/Mn
+
/
at the
REC
START
11

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