Fathoms Technology

GRHF Series Air Flow Meters and Controllers

GRMF Meters are economically versatile, user friendly devices. Mass flow is read directly for a wide range of flow rates and gases. They feature on-board backlit display and on-board set point control knob. Standard power is 24VDC supplied by an AC adapter. Their durability and NIST-traceable calibration accuracy, coupled with their relatively low cost, makes them ideal for OEM applications. Call 1-888-FATHOMS (328-4667) for more information.

Download the Specs Sheet

Technical Info

Wetted Material316 Stainless Steel
Output Signal0-5 VDC Linear or 4-20 MA Linear
Input Power24 VDC Standard, Optional 15 VDC 115 VAC, 220 VAC @ 500ma
Accuracy+/- 1% Full scale (including Linearity)
Repeatability+/- 0.15% Full scale or better
Connection9 Pin Sub "D"
Control SignalIntegral or 0-5 VDC
Control ValveElectromagnetic N/C
Meter Range0-200 SLPM to 1000 SLPM
Max Pressure250 PSIG
Response Time1 Sec
Temperature Coeff.0.05% Full scale per 1º C or better
Pressure Coeff.0.01% Full scale per PSIG or better

Ordering Information

GR-(model)-(fitting code)-(output code)-(power code)-(flowbody code)-Gas and range

Model Fitting Code Output Code Power Code Flowbody Code
111 = no display
112 = w/ display
115 = no display
116 = w/ display
1 = 1/4"fnpt
2 = 1/2"fnpt
3 = 1/4"compression
4 = 3/8"compression
A = 0-5 VDC
B = 4-20 ma
PW = 12 VDC
(Meters Only)
PS = 15 VDC
PO = 24 VDC
PV = 115 VAC
PE = 220 VAC
No code = Standard Delrin
SS = 316 Stainless Steel
MF = Mid-range (316 SS)
HF = High-range (316 SS)

Download the Specs Sheet

Call 1-888-Fathoms (328-4667) to Order!