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Package Size: 8.8 x 4.1 x 2.6 inches
The Supco DAVM+ digital air flow meter combines a vane anemometer, thermometer, hygrometer, and light meter for measuring air velocity in m/s, fpm, knots, mph, and km/h, air flow volume in cfm and cmm; air temperature in degrees C and F; humidity in % RH; and light in lux or fc; and has data record and hold functions for analyzing air flow. Data record function records readings and displays maximum and minimum values, and hold function freezes a reading on the display to aid documentation. A thin-film capacitance humidity sensor responds promptly to changes in humidity and a thermistor sensor measures ambient air temperature. The meter has a Type K thermocouple input jack for attaching a separate temperature probe (sold separately) to increase the range of temperature measurement. The LCD shows air velocity, temperature, and humidity readings simultaneously. The meter turns off automatically after 10 minutes of non-use to conserve battery life and has a low-battery indicator. This anemometer is used for monitoring indoor air quality and tracking air flow and temperature in ductwork, spray booths, and exhaust hoods, among other applications.
|Air velocity range||0.4 to 30.0 m/s; 80 to 5,910 fpm; 0.8 to 58.3 knots; 0.9 to 67.0 mph; 1.4 to 108.0 km/h|
|Air velocity resolution||0.1 m/s; 1 fpm; 0.1 knots; 0.1 mph; 0.1 km/h|
|Air velocity accuracy||+ or - 3% of full scale/+ or - 4% of full scale at > 20 m/s|
|Maximum air flow volume||1,908,400 cfm/54,000 cmm|
|Air temperature range||0 to 50 degrees C/32 to 122 degrees F|
|Humidity range||10 to 95 % RH|
|Light range||0 to 20,000 lux/0 to 2,000 fc|
|Operating environment||0 to 50 degrees C/32 to 122 degrees F at up to 80% relative humidity|
|Power||(1) 9V battery (sold separately)|
|Dimensions (H x W x D)||156 x 60 x 33 mm/6.13 x 2.36 x 1.29 inches|
|Weight||160 g/5.6 oz.|
H is height, the vertical distance from the lowest to highest point; W is width, the horizontal distance from left to right; D is depth, the horizontal distance from front to back.
Anemometers, also called wind meters, measure air velocity and are most commonly used for weather monitoring to determine wind speed and for HVAC applications to determine air flow within ducts. In addition to air velocity, anemometers may measure wind direction, air pressure, air flow volume, air temperature, humidity, light, and other properties. The most common types of anemometer are cup, vane, hot-wire, and Pitot tube. Cup and vane anemometers calculate air velocity based on the number of rotations of the cups or vane. Hot-wire anemometers calculate air velocity by measuring the change in electrical resistance as air flow cools a heated wire. Pitot tube anemometers measure air pressure within a tube and calculate air velocity based on the difference in pressure between the air inside and outside of the tube. Many anemometers have digital readouts and can display air velocity readings in different units of measure, such as meters per second (m/s), feet per minute (ft./min. or fpm), knots, miles per hour (mph), and kilometers per hour (km/h).
Supco manufactures test instruments and replacement parts for heating, ventilation, air conditioning, and refrigeration systems. The company, founded in 1945, is headquartered in Allenwood, NJ.
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