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Dwyer GFM4 Series GFM4, Gas Mass Flow Meter

  • Brand Dwyer
  • Part # GFM4
  • Model # Series GFM4
  • Condition
    Brand New

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GFM4, Gas Mass Flow Meter

The Series GFM4 Gas Mass Flow Meter is an ideal choice for the measurement of flow rates of a wide variety of gases. Standard LCD and four button keypad allows easy access to the many features of the GFM4. 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, pressure, and temperature to alert user of high or low thresholds being exceeded. With a high 1% FS accuracy and 0.25% FS repeatability, the GFM4 is the optimal choice in gas flow metering and monitoring. The GFM4 comes with a NIST traceable certificate.

Features:

  • Multi-drop capability of up to 256 units (for RS-485 option).
  • Programmable 12 digit totalizer indicates total gas volume.
  • Flow alarm limits for high and low gas flow with relay output.
  • Pressure alarm limits for high and low gas pressure with relay output.
  • Four button keypad and large 128x64 graphical LCD with backlight.
  • Automatic zero adjustment.
  • Self diagnostic tests.
  • Free communication software available at www.dwyer-inst.com.
  • NIST traceable certificate included.

Product Applications:

  • Gas flow measurement
  • Gas flow control
  • Operating pumps and valves
  • Process equipment
  • Vacuum processes
  • Glass and metal coating
  • Film deposition
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Technical Details

Optional Accessories
Reviews
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:Linear 0 to 5 VDC; 0 to 10 VDC; 4 to 20 mA
Relay Rating:1 amp ata 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: 200 psia (13.79 barA).
Leak Integrity:1 x 10-9 smL/sec of helium.
Display:128 x 64 graphic LCD with backlight.
Weight:1 lb (.45 kg).
    Product Details
    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:Linear 0 to 5 VDC; 0 to 10 VDC; 4 to 20 mA
    Relay Rating:1 amp ata 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: 200 psia (13.79 barA).
    Leak Integrity:1 x 10-9 smL/sec of helium.
    Display:128 x 64 graphic LCD with backlight.
    Weight:1 lb (.45 kg).
      Optional Accessories

      Optional Accessories

      Note

      Note: Please read description carefully. Do not base your order on the picture presented.

      Reviews

      Reviews

      Mega Depot
      (800) 884-5767
      +1 (332) 900-3727 (Intl.)