The Dwyer 460 air meter with detachable probes measures air velocity in fpm, displaying low- and high-range readings of supply and return grille velocities, furnace draft, and pressure drop across filters, and includes a slide rule calculator for determining static pressure in inches of w.c. The meter is made of hard plastic to resist breakage and provide a clear view of the dual-scale that has red graduations for distinct readings. It includes a return grille probe, a supply grille probe, an angle connector, rubber tubing, an air velocity slide rule calculator, pipe cleaners and nylon bristles for cleaning, a carrying case, and instructions. This meter is commonly used for servicing HVAC (heating, ventilation, and air conditioning) equipment.
|Air velocity ranges||Low range: 260 to 1,200 fpm; high range: 1,000 to 4,000 fpm|
|Scale graduations||Low range: 20 fpm; high range: 100 fpm|
|Air pressure range||Low range: 0.005 to 0.09 inches of w.c.; high range: 0.5 to 1.0 inches of w.c.|
|Dimensions (H x W x D)||152.40 x 42.88 x 11.11 mm/6 x 1-11/16 x 7/16 inches|
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).
Dwyer Instruments manufactures measurement and control instruments, including pressure gauges, flow meters, level instrumentation, temperature instrumentation, and air quality monitors. The company, founded in 1931, is headquartered in Michigan City, IN.
What's in the Box?
- Dwyer 460 air meter
- Return grille probe
- Supply grille probe
- Angle connector
- Rubber tubing
- Air velocity slide rule calculator
- Pipe cleaners and nylon bristles for cleaning
- Carrying case