Size:1-10 SCFM Air
The Dwyer Rate-Master series RMC flowmeter is a 10" scale air flow meter that has 1/2" female NPT inlet and outlet
connections for inline monitoring and measuring of air flow with an accuracy of + or – 2% of full scale for precise
readings. An integral flow guide stabilizes the float throughout the range for consistent readings. The flowmeter is
made of injection molded polycarbonate around a precision tapered pin to maintain calibration, resist breakage, and
provide a clear view of the scale. The body is ed to a stainless steel back with welded pipe thread inserts to
absorb piping torque during installation. The scale is epoxy-coated brushed aluminum with black graduations marked along
both sides of the flow tube for distinct readings. Models are available for measuring air flow in scfm or scfh. Some
models come with a brass or stainless steel metering valve for precise adjustment of air flow. Hardware is included for
panel or surface ing. This flowmeter is commonly used for measuring air flow in medical equipment, air samplers,
analyzers, monitors, injectors, and cabinet purging equipment, among other devices.
Specifications
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Scale length
10"
Accuracy
+ or – 2% of full scale
Connections
1/2" female NPT inlet and outlet
Pressure rating
100 psi/6.9 bar
Temperature rating
54 degrees C/130 degrees F
Wetted materials
Body: polycarbonate; O-ring: Buna-N and neoprene; metal parts: stainless steel or brass (for models with brass valve);
float (varies by range): black glass, nickel/copper alloy, stainless steel, or tungsten carbide
Dimensions (H x W x D)
39.05 x 5.72 x 6.35 mm/15-3/8 x 2-1/4 x 2-1/2 inches
Weight
1,105.6 g/39 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).
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?
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* Dwyer Rate-Master series RMC flowmeter
* ing hardware
* Instructions
- 10" scale flowmeter with 1/2" female NPT connections for inline monitoring and measuring air flow.
- Accuracy of + or – 2% of full scale for precise readings.
- Integral flow guide stabilizes the float throughout the range for consistent readings.
- Made of injection molded polycarbonate around a precision tapered pin to maintain calibration, resist breakage, and provide a clear view of the scale.
- Black scale graduations are marked along both sides of the flow tube for distinct readings.