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.

Note: These units require a cable, see GFM-CBL4 or GFM-CBL5, depending on your needs.

Approvals:
• CE Approval

Features:
• Provides high accuracy and repeatability
• Flow rates are virtually unaffected by temperature and pressure variations
• NIST traceable certificate included
• Utilizes an electromagnetic valve and PID electronics to maintain continuous control by comparing measured sensor signal set to flow rates
• Set points can be adjusted with local potentiometers or remotely via 0 to 5 VDC or 4 to 20 mA analog signal
• Actual gas flow is displayed in engineering units on a 3-1/2 digit, 90° tiltable LCD readout
• Can be used with Series GFT2 Flow Totalizer for applications requiring totalization

Applications:
• Gas flow measurement
• Gas flow control
• Operating pumps and valves
• Process equipment
• Vacuum processes
• Glass and metal coating
• Film depostition

Specifications:

Service:	Clean gases compatible with wetted parts.
Wetted Materials:	GFC-1XXX: Anodized aluminum, brass, 316 SS and fluoroelastomer O-rings; GFC-2XXX: 316 SS and fluoroelastomer O-rings.
Accuracy:	±1% FS including linearity over 59 to 77°F (5 to 25°C) and 5 to 60 psia (0.34 to 4 bar); Series GFC X143, X144, X145, ±1.5% FS.
Repeatability:	±0.5% of FS.
Response Time:	2 seconds to within ±2% of actual flow.
Output:	Linear 0 to 5 VDC and 4 to 20 mA.
Maximum 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:	1000 psig (68.9 bar); Series GFC-X143, X144, X145, 500 psig (34.5 bar).
Leak Integrity:	1 x 10-9 sccs of He.
Display:	90° tiltable, 3-1/2 digit.
Agency Approvals:	CE.