Last Updates: 26/05/2020

Dwyer Series GFM3 Gas Mass Flow Meter

Part Number: GFM3 Categories: ,

Email Us: sales@celectric.com.my
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The Series GFM3 Gas Mass Flow Meter is an ideal choice for the measurement of flow rates of a wide variety of gases. This digital flow meter features a 12-digit totalizer for total gas volume indication, and is available in the choice of 0 to 5 VDC, 0 to 10 VDC, or 4 to 20 mA output signals. Standard LCD and four button keypad allows easy access to the many features of the GFM3. Digital interface operates through available RS-485 or RS-232, providing access to internal data parameters and multi-drop capability of up to 255 units (RS-485 only). Set alarms remotely via digital interface for flow to alert user of high or low thresholds being exceeded. With a high ±1% FS accuracy and ±0.25% FS repeatability, the GFM3 is the optimal choice in gas flow metering and monitoring. The GFM3 comes with a NIST traceable certificate.

Product Applications

  • Gas Monitoring
  • Operating Pumps and Valves
  • Process Equipment
  • Vacuum Processes
  • Glass and Metal Coating
  • Film Deposition

Service : Clean gases compatible with wetted parts.

Wetted Materials : 316 SS, 416 SS; Fluoroelastomer, Buna-N, EPR or PTFE O-rings.Accuracy:±1% FS.

Repeatability : ±0.25% FS.

Response Time : 0.6 to 1.0 s to within ±2% of setpoint over 20 to 100% FS.

Output Signal : Output Signal: Linear 0 to 5 VDC (3000 Ω min. load impedance); 0 to 10 VDC (6000 Ω min. load impedance); 4 to 20 mA (500 Ω max. loop resistance).

Relay Rating : 1 amp @ 24 VDC.

Max. Particulate Size : 5 microns.

Temperature Limits : Ambient: 32 to 122°F (0 to 50°C); Dry Gases: 14 to 122°F (-10 to 50°C).

Power Supply : 12 VDC; 15 VDC; ±24 VDC.

Process Connections : 1/8″ compression fitting for flow rates ≤ 10 L/min; 1/4″ for ≤ 50 L/min; 3/8″ for ≤ 100 L/min.

Pressure Limits : 500 psia (35 bar).

Leak Integrity : 1 x 10-9 smL/sec of helium.

Display : 128 x 64 graphic LCD with backlight.

Weight : 1 lb (.45 kg).

Multi-drop capability of up to 256 units (for RS-485 option).

• Programmable 12 digit totalizer indicates total gas volume.

• Four button keypad and large 128×64 graphical LCD with backlight.

• Internal conversion factors for up to 32 gases.

• Automatic zero adjustment.

• Self diagnostic tests.

• Free communication software available for download at www.dwyer-inst.com.

• Set alarms remotely via digital interface for flow to alert user of high or low thresholds being exceeded.

• NIST traceable certificate included.

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