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Flow range5-50 SCFH
Media typeAir
Unit of measureGal., L
Includes flow rate adjustment knobYes
Accuracy3%
Max. operating pressure100 psi
Connection size1/4"
For pipe size1/4"
Mounting locationPanel Mount
Flowmeter typeVariable Area
Mounting orientationVertical
Body materialPolycarbonate
Process connection typeFNPT
Wetted materialAluminum, Buna N, Glass, Nickel Copper Alloy, Neoprene, Polycarbonate, Stainless Steel, Tungsten Carbide
Media temp. range130°F
Max. media temp.130°F
Process connection size1/4"
Overall width1 1/2"
Overall height8 4/5"
Min. flow rate5 SCFH
Max. flow rate50 SCFH
Flow rate range5-50 SCFH
Wetted material gradeGrade K500
Compatible flow materialAir
Output typeNot Applicable
Pulse rateNot Applicable
Flow rate - minimum5 SCFH
Flow rate - maximum50 SCFH
Cable lengthNot Applicable
Housing materialPolycarbonate
Includes pressure gaugeNot Applicable
Max. frequencyNot Applicable
Media temperature - minimumNot Applicable
Rotor materialNot Applicable
Seal materialNot Applicable
Shaft materialNot Applicable
Viscosity - maximumNot Applicable
Display typeNot Applicable
ComplianceMeets the technical requirements of EU Directive 2011/65/EU (RoHS II).
CautionDwyer® Rate-Master® flowmeters are designed to provide satisfactorylong term service when used with air, water, or other compatible media.Refer to factory for information on questionable gases or liquids. Causticsolutions, anti-freeze (ethylene glycol) and aromatic solvents shoulddefinitely not be used.
Process connectionRMA: 1/8"; RMB: 1/4"; RMC: 1/2" female NPT.
Pressure limit100 psi (6.9 bar).
Temperature limit130°F (54°C).
Wetted materialsBody: Polycarbonate; O-ring: Neoprene and Buna-N;Metal parts: SS; Float: SS, black glass,aluminum, K monel, tungsten carbide depending on range.
ServiceCompatible gases and liquids.
SeriesRM Series
Pressure range5-50 SCFH
Scale5 in
Measurement range5-50 Std. Cubic Ft./Hour, Air
Mounting typeSurface Mount
Port size1/4 "
Gross weight0.925 lbs
Comments4 to 50 SCFH
Maximum pressure100 psi
Standard flow accuracy3 %
OutputLocal Display
Port styleNPT Female
Sensor typeGas
MaterialPolycarbonate
Family seriesDwyer Instruments Flow Control
Ships factory directNo