Extech Instruments 451212 Instruction Manual

Air Velocity MultiMeter Adapter
1. INTRODUCTION
Congratulations on your purchase of Extech's Air Velocity Multimeter Adaptor. The 451212
connects to the mV input of a multimeter for displaying air velocity (knots, ft/min, km/hr, and
m/sec). This professional device, with proper care, will provide years of reliable service.
2. SPECIFICATIONS
Measurement
Sensor
Sensor cable
Power
Operating
Temperature &
Relative Humidity
Dimensions
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Model 451212
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Range
0.4 – 30.0 meters/sec
1.4 – 108.0 kilometers/hr 1 mV per 1km/hr
80 – 5910 ft/min
0.8 – 58.3 knots
Twisted vane arm with low friction ball bearing
55" cable
9V Battery (low battery indicator located on front panel)
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Temp: 32 to 122 F (0 to 50
100 x 50 x 25mm (3.9x2.0x1.0"); Sensor: 2.8" (72mm) diameter
INSTRUCTION MANUAL
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Output
1 mV per 1m/sec
1 mV per 100ft/min ± (2% + 0.2 mV)
1 mV per 1 knot
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C); RH: 90% max.
Model 451212 Version 2.3 May 2003
Accuracy
± (2% + 0.1 mV)
± (2% + 0.3 mV)
± (2% + 0.2 mV)