AN400 V3.0 12/06
6
Specifications
Circuit description Custom LSI microprocessor design
Display Dual function 9999 count LCD display
Measurement units m/s, km/h, ft/min, knots, mph, Temperature
o
C/
o
F
Data hold Freezes reading on the display
Sensor Structure Air velocity sensor: Cup vane arm with low-friction ball-
bearing design. Temperature sensor: Precision thermistor
Memory Recall Record and Recall Maximum (MAX) and Minimum (MIN)
readings
Data Logger Manual store/recall of up to 100 data points
Auto Power off After 10 minutes
Sampling Time Approx. 1 second
Water Resistance IP65
Operating Temperature 32 °F to 122 °F (0 °C to 50 °C)
Operating Humidity Max. 80% RH
Power Supply 4 x 1.5V AAA batteries
Power Consumption Approx. 6.8mA DC (typical battery life: approx. 150 hrs)
Weight 0.4 lbs. (181g)
Dimensions Main instrument: 7.5 x 1.6 x1.3” (190 x 40 x 32mm)
Cup Vane: 5.3” (135mm) diameter
Air Velocity Range Specifications
Measurement Range Resolution
ccuracy
(of full scale)
ft/min (feet per minute) 144 – 6895 ft/min 1 ft/min ± (2% + 40 ft/min)
m/s (meters per second) 0.9- 35.0 m/s 0.1 m/s ± (2% + 0.2 m/sec)
km/h (kilometers per hour) 2.5 - 126.0 km/h 0.1 km/h ± (2% + 0.8 km/hr)
mph (miles per hour) 1.6 - 78.2 mph 0.1 mph ± (2% + 0.4 mph)
knots (nautical miles per hour) 1.4 to 68.0 knots 0.1 knots ± (2% + 0.4 knots)
Temperature Range Specifications
Range Resolution Accuracy
32
o
F to 122
o
F (0
o
C to 50
o
C) 0.1
o
F (0.1
o
C) ± 1.5
o
F (0.8
o
C)
Copyright © 2006 Extech Instruments Corporation
All rights reserved including the right of reproduction in whole or in part in any form.
