Benetech GM8902 digital anemometer with a separate fan probe. Measures wind velocity from 0 to 45 m/s in five units, air flow up to 999900 CMM/CFM and air temperature, with max/min, 2/3 Vmax and average functions, a 500-record memory, backlit LCD and USB link to a PC.
The Benetech GM8902 is a hand-held digital anemometer with a separate fan probe connected to the meter by a wire. It measures wind velocity, air temperature and air flow, and converts each of them between its units at the press of a key.
Wind velocity is measured from 0 to 45 m/s (0 to 8800 ft/min, 0 to 88 knots, 0 to 140 km/hr, 0 to 100 mph) with an accuracy of ±3% ±0.1dgts in m/s. After the duct area is entered (0.001 to 9999), the meter calculates air flow from 0 to 999900 in CMM (m³/min) or CFM (ft³/min), and can show the 2/3 Vmax value and the average flow.
Readings can be held on the display, stored in the 500-record memory, recalled and deleted, and the meter connects to a PC with a USB cable. It is powered by four 1.5 V AAA alkaline batteries.
| Manufacturer | Benetech |
|---|---|
| Model | GM8902 |
| Wind velocity (m/s) | 0 to 45 m/s; resolution 0.001; lowest start value 0.3; accuracy ±3% ±0.1dgts |
| Wind velocity (ft/min) | 0 to 8800 ft/min; resolution 0.01/0.1/1; lowest start value 60; accuracy ±3% ±20dgts |
| Wind velocity (knots) | 0 to 88 knots; resolution 0.01/0.1; lowest start value 0.6; accuracy ±3% ±0.1dgts |
| Wind velocity (km/hr) | 0 to 140 km/hr; resolution 0.001; lowest start value 1; accuracy ±3% ±0.4dgts |
| Wind velocity (mph) | 0 to 100 mph; resolution 0.001/0.01; lowest start value 0.7; accuracy ±3% ±0.2dgts |
| Air flow range (CMM) | 0 to 999900 m³/min; resolution 0.001 to 100 |
| Air flow range (CFM) | 0 to 999900 ft³/min; resolution 0.001 to 100 |
| Duct area setting | 0.001 to 9999 |
| Air temperature | 0.0 to 45.0 °C (32.0 to 113.0 °F); resolution 0.1; accuracy ±1.0 °C (±1.8 °F) |
| Memory | 500 records |
| Display | Large LCD with backlight |
| Interface | USB (connection to PC) |
| Auto power off | After 10 minutes without operation |
| Power supply | 4 × AAA 1.5 V alkaline batteries |
| Low battery indication | 4.4 V ± 0.2 V |
| Current consumption | Operating ≤ 18 mA; standby ≤ 2 µA |
| Battery life | 20 hours (continuous use) |
| Operating conditions | Meter: 0 to 50 °C (32 to 122 °F); fan: 0 to 60 °C (32 to 140 °F); humidity ≤ 80% RH |
| Storage conditions | -40 to 60 °C (-40 to 140 °F); humidity ≤ 80% RH |
| Dimensions | Meter: 77 × 36 × 164 mm; fan: 65 × 29 × 172 mm |
| Weight | 330 g net (without batteries) |
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