Extech Instruments 407114, Руководство пользователя

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Model 407114 Version 2.0 November 2005
3
Specifications
General Specifications
Circuit Custom LSI microprocessor circuit
Display Dual function 0.5" (13 mm) 4-digit LCD
Measurement units Air Velocity: m/s, km/h, ft/min, knots, mph;
Air Flow: CMM (m
3
/min); CFM (ft
3
/min); Temp: °C & °F
Data hold Freezes displayed reading
Sampling rate 1 reading per second approx.
Sensors Air velocity/flow sensor: Conventional angled vane arms
with low-friction ball bearing.
Temperature sensor: Precision thermistor
MAX/MIN Memory Record and view Maximum and Minimum readings
Automatic Power off Auto shut off after 15 minutes to preserve battery life
Data Output RS 232 PC serial interface with 16-bit data stream
Operating Temperature 32°F to 122°F (0°C to 50°C)
Operating Humidity Max. 80% RH
Power Supply 9V battery
Power Current Approx. 8.3 mA DC
Weight 0.84 lbs. (381g) including battery & probe
Dimensions Main instrument: 7.1 x 2.8 x1.3" (180 x 72 x 32mm)
Sensor Head: 72mm Diameter
Range Specifications
Air Velocity Range Resolution Accuracy
(% rdg)
m/s (meters per sec) 0.40 - 25.00 m/s 0.01 m/s ± (2% + 0.2 m/s)
km/h (kilometers/hour) 1.4 - 90.0 km/h 0.1 km/h
± (2% + 0.8 km/hr)
ft/min (feet per minute) 80 – 4921 ft/min 1 ft/min ± (2% + 40 ft/m)
mph (miles per hour) 0.9 – 55.9 mph 0.1 mph ± (2% + 0.4 MPH)
knots (nautical MPH) 0.8 to 48.6 knots 0.1 knots
± (2% + 0.4 knots)
Air Flow Range Resolution Area
CMM (cubic meters/min) 0-999,900 m
3
/min 0.001 to
100
0 to 9,999m
2
CFM (cubic ft/min) 0-999,900 ft
3
/min 0.001 to
100
0 to 9,999ft
2
Air Temperature Range Resolution Accuracy
32 - 122
o
F (0 - 50
o
C) 0.1
o
F/C 1.5
o
F (0.8
o
C)