Dwyer Instruments 8904 Data sheet
Model
ON-OFF/RESET
HOLD
AVERAGE
MIN/MAX REC
SEL:-MIL/H
MULTI-POINT
-KNOT
SINGLE-POINT
S/N:XXXXXXX
MADE IN CHINA
P.R.O.C.
Anemo-thermometer
DFM
8904
BLACK FAN
DISPLAY
1-1/2
[38.1]
2-19/32
[66.0]
BATTERY
COMPARTMENT
BLACK
BUTTONS
SERIAL
NUMBER
LABEL
AGENCY
APPROVAL
LABEL
3-1/64 [76.5]
7-7/32
[183.4]
7/8
[22.4]
1-25/32 [45.4]
8904
Integral Vane Thermo-Anemometer
Large 1.3˝ Dual Display, One Hand Operation
Simultaneously measure air velocity and temperature with the Model 8904 Integral
TEST EQUIPMENT
Vane Ther mo-Anemometer. The large 1.3˝ (34 mm) display allows use rs to easily view
readings. User-selectable wind speed units include ft/min, m/sec, knots, mph and km/hr.
Additionally, a built-in sensor records ambient temperature in °F or °C. Model 8904 features
include data hold, the ability to record minimum, maximum and average readings on a single
point and an RS-232 interface setting. The units can also record and average up to 2 hours of
data while displaying the continuous running average. Model 8904 includes hard carrying case,
battery and instruction manual. This compact meter is ideal for HVAC inspection, energy
audits and balancing applications.
APPLICATIONS
This meter is most ideal for measuring heat, ventilation, air conditioning, refrigerating
wind flow and temperature.
Model 8904, Integral Vane Thermo-Anemometer
SPECIFICATIONS
AIR VELOCITY
Range: 80 to 5900 ft/min (0.4 to 30
m/s).
Accuracy: ±3% of reading or last
significant digit (whichever is greater).
Resolution: 1 ft/min (0.01 m/s).
Response Time: 1 second.
TEMPERATURE
Range: 14 to 122°F (-10 to 50°C).
Accuracy: ±1°F (±0.6°C).
Resolution: 0.1°F/°C.
Response Time: 60 seconds.
ACCESSORY
A-552, USB Cable and RS-232 Software
METER
Display: 1.3 x 1.6˝ (34 x 40 mm).
Serial Communications: 2400 bps, 8
data bits.
Power Requirements: 9 V alkaline
battery, included, user replaceable.
Battery Life: 100 hours.
Vane Diameter: 2-7/8˝ (70 mm).
Weight: 5.3 oz (150 g).
Agency Approvals: CE.
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