Dostmann Electronic VA893, Руководство пользователя

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7
Specifications
Air Velocity Range Resolution Accuracy
m/s (meters per sec) 0.40 - 30.00 m/s 0.01 m/s ± (3% + 0.20 m/s)
km/h (kilometers/hour) 1.4 - 108.0 km/h 0.1 km/h ± (3% + 0.8 km/hr)
ft/min (feet per minute) 80 – 5900 ft/min 1 ft/min ± (3% + 40 ft/m)
mph (miles per hour) 0.9 – 67.0 mph 0.1 mph ± (3% + 0.4 MPH)
knots (nautical MPH) 0.8 to 58.0 knots 0.1 knots ± (3% + 0.4 knots)
Air Flow Range Resolution Area
CMM (cubic meters/min) 0-9999 00 m
3
/min 0.001 to 100 0 .000 to 999.9 m
2
CFM (cubic ft/min) 0-9999 00 ft
3
/min 0.001 to 100 0.000 to 999.9 ft
2
Range Resolution Accuracy Air Temperature
14 - 140
o
F (-10 - 60
o
C) 0.1
o
F/C 4.0
o
F (2.0
o
C)
Circuit Custom LSI microprocessor circuit
Display Dual function 0.7" (16 mm) 4-digit LCD
Sampling rate 1 reading per second approx.
Sensors Air velocity/flow sensor: Conventional angled vane arms with
low-friction ball bearing
Temperature sensor: NTC-type precision thermistor
Automatic Power off Auto shut off after 20 minutes to preserve battery life
Operating Temperature 32 to 122°F (0 to 50°C)
Storage Temperature 14 to 140
o
F (-10 to 60
o
C)
Operating Humidity <80% RH
Storage Humidity <80% RH
Operating Altitude 2000 meters (7000ft) maximum
Battery One 9 volt (NEDA 1604) battery
Battery life 80 hours approx. (if the Backlight is used continuously, battery
life will be reduced significantly)
Battery Current 8.3 mA DC approx.
Weight 1.6 lbs. (725g) including battery & probe
Dimensions Main instrument:: 203 x 75 x 50mm
Sensor Head: 2.75” (70mm) Diameter