Extech Instruments 407112, Руководство пользователя

Страница: 3 / 8

Model 407112 Version 4.1 03/06 3
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: Conventional twisted vane arm with low-
friction ball-bearing
Temperature sensor: Precision thermistor
Memory Recall Record and Recall Maximum (MAX) and Minimum (MIN)
readings
Auto Power off After 15 minutes
Data Output RS 232 PC serial interface for use with model 407001 data
acquisition PC interface kit
Operating Temperature 32 °F to 122 °F (0 °C to 50 °C)
Operating Humidity Max. 80% RH
Power Supply 9V battery
Power Consumption Approx. 8.3mA DC
Weight 0.84 lbs. (381g)
Dimensions Main instrument: 7.1 x 2.8 x1.3” (180 x 72 x 32mm)
Sensor Head: 2.8” (72 mm) diameter
Air Velocity Range Specifications
Measurement Range Resolution Accuracy
(of reading)
ft/min (feet per minute) 80 – 4930 ft/min 1 ft/min ± (2% + 40 ft/min)
m/s (meters per second) 0.4 - 25.0 m/s 0.01 m/s<10m/s ± (2% + 0.2 m/sec)
km/h (kilometers per hour) 1.4 - 90.0 km/h 0.1 km/h ± (2% + 0.8 km/hr)
mph (miles per hour) 0.9 - 55.9 mph 0.1 mph ± (2% + 0.4 mph)
knots (nautical miles per hour) 0.8 to 48.6 knots 0.1 knots ± (2% + 0.4 knots)
Temperature Range Specifications
Range (probe only) 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)