Series GFM Gas Mass Flow Meters combine a straight tube sensor with a restrictor flow element to provide high accuracy and repeatability. Flow rates are virtually unaffected by temperature and pressure variations. Actual gas flow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD readout. Units can be used with Series GFT Flow Totalizer for applications requiring totalization. Series GFM includes a NIST traceable certificate.

SPECIFICATIONS
Service: Clean gases compatible with wetted parts.
Wetted Materials: GFM-1XXX: Anodized Aluminum, Brass, 316 SS and Viton® O-rings; GFM-2XXX: 316 SS and Fluoroelastomer O-rings.
Accuracy: ±1.5% FS including linearity over 59 to 77°F (5 to 25°C) and 5 to 60 psia (0.35 to 4 bar).
Repeatability: ±0.5% of full scale.
Response Time: 2 seconds to within ±2% of actual flow.
Output: Linear 0-5 VDC and 4-20 mA.
Max. Particulate Size: 5 microns.
Temperature Limits: 32 to 122°F (0 to 50°C).
Power Supply: ±12 VDC.
Process Connections: 1/4" compression fitting for flow rates =50 L/m; 3/8" for 100 and 200 L/m; 1/2" for 500 L/min; 3/4" for 1000 L/min.
Pressure Limits: 500 psig (34.5 bar).
Leak Integrity: 1 x 10^-7 sccs of Helium.
Display: 90° tiltable, 3-1/2 digit.
Agency Approvals: CE.

ACCESSORIES - See "Ordering" page

For Series GFM Gas Mass Flowmeters
GFM-110P - 110V Power Supply
GFM-220PE - 220V Power Supply
GFM-CBL4 - 8 ft cable for 4-20 mA output
GFM-CBL5 - 3 ft cable for 0-5 VDC output
IO-1 - 0-5 VDC to RS232 Input to Output Signal Conditioner