407123 Datasheet, PDF (2/8 Pages) Extech Instruments Corporation. – Hot Wire Thermo-Anemometer

Introduction
Congratulations on your purchase of the Extech Hot Wire Anemometer. This instrument measures air
flow and temperature by placing the sensor into an airway such as a duct or a vent. The sensor is
situated at the end of the telescoping wand for convenience and has a protective sliding cover. The
meter includes an RS-232 PC Interface jack for use with the Model 407001 Data Acquisition software
and interface cable kit. This meter is shipped fully tested and calibrated and, with proper use, will provide
years of reliable service.
Specifications
General Specifications
Circuit configuration
Display
Measurements
Data hold
Sensor Structure
Min/Max Recording
PC Interface
Operating
Temperature
Operating Humidity
Power Supply
Power Consumption
Weight
Dimensions
Custom one-chip LSI microprocessor circuit
3-1/2 digit (2000 count) dual LCD display
m/s (meters per second), km/h (kilometers per hour), ft/min
(feet/per minute), knots (nautical miles per hour), MPH (miles per
hour), Temperature: °C, °F
Freezes reading on display
Air velocity sensor: Glass bead thermistor
Temperature sensor: Precision thermistor
Record and Recall Maximum (MAX) and Minimum (MIN) readings
RS 232 PC serial interface jack for use with Model 407001
software and interface cable kit
32 to 122°F (0 to 50 °C)
Max. 80% RH
Six (6) 1.5V ‘AAA’ batteries
Approx. 30 mADC
0.78 lb (355 g) including batteries & probe
Main instrument: 7.1 x 2.8 x 1.3” (180 x 72 x 32 mm)
Sensor: 0.5” (12mm) diameter
Telescope: 7’ (2.1m) maximum length with cable
Range Specifications
Units
Range
Resolution
Accuracy
m/s
0.2 to 20.0 m/s
0.1 m/s
±(3.0%rdg+0.3m/s)*
km/h
0.7 to 72.0 km/h
0.1 km/h
±(3.0%rdg+1.1km/h)*
ft/min
40 to 3940 ft/min
1 ft/min
±(3.0%rdg+59ft/min)*
MPH
0.5 to 45.0 MPH
0.1 MPH
±(3.0%rdg+0.67MPH)*
knots
0.4 to 31.0 knots
0.1 knots ±(3.0%rdg+0.58knots)*
*or, ±(1.0%FS+3d) whichever is greater
Temperature
32 to 122 ^oF (0 to
50^oC)
0.1 ^oF and ^oC
1.5 ^oF (0.8 ^oC)
Note: m/s: meters per second; km/h: kilometers per hour; ft/min: feet per minute; Knots:
nautical miles per hour; MPH: miles per hour
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407123 V6.2 3/08