Specifications; General Specifications; Range Specifications; Front Panel Description - Extech Instruments 451112 Manual

2. SPECIFICATIONS

2.1 General Specifications

Display
Measurement
Data hold
Sensor Structure Air velocity sensor: Conventional twisted vane arm with
Ambient
Power Supply
Power Current
Weight
Dimensions

2.2 Range Specifications

Measure
m/s
km/h
ft/min
knots
Temp.
* Multiply displayed ft/min readings by a factor of 10

3. FRONT PANEL DESCRIPTION

1. LCD Display
2. °C/ °F /Airflow selection
3. ON/OFF/Data Hold Switch
4. Airflow unit selection
5. Sensor-to-meter connection
6. Sensor head
7. Sensor handle
0.7" (18mm) 3-1/2 digit (1999 count) LCD
m/s (meters per second), km/h (kilometers per hour), ft/min
(feet per minute), knots (nautical miles per hour), Temp. °C/°F
Freezes present value on display when selected
balanced, low-friction ball-bearing design
Temperature sensor: Thermister
32 °F to 122 °F (0 °C to 50 °C); <80%
9V battery (Heavy duty type)
Approx. 9 mA DC
12 oz. (325 g) (including battery)
Main instrument: 6.6 x 3.2 x1.2" (180 x 72 x 32 mm)
Sensor Head: Round, 2.8" (72 mm) Dia.
Sensor Cable: 39" (1m) length
Range
0.4 – 30.0 m/s
1.4 – 108.0 km/
80 – 5910 ft/min *
0.8 – 58.3 knots
o
0 to 60 C / 32 to 140
Resolution
0.1 m/s
0.1 km/h
10 ft/min
0.1 knots
o o
F 0.1 C / 0.1
2
Accuracy
± (2% + 0.2 m/s)
± (2% + 0.2 km/hr)
± (2% + 20 ft/min)
± (2% + 0.2 knots)
o o
F 0.8 C / 1.5
Model 451112 Version 2.4 2/04
o
F