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Series GFM2 Gas Mass Flow Meter
Brand: Dwyer Instruments, LLCThe Series GFM2 Gas Mass Flow Meters is an ideal choice for the measurement of flow rates of a wide variety of gases.
Unit can be calibrated for a variety of gases with user selectable 0 to 5 Vdc or 4 to 20 mA and two relay outputs and programmable totalizer that indicates total gas quantity.
Features- Utilizes a straight tube sensor with a restrictor flow element to provide a high ±1% Full Scale accuracy and ±0.25% Full Scale repeatability
- Gas flow can be displayed in 23 different engineering units on an optional 2x16 character LCD display with internal conversion factors for up to 32 gases
- Digital RS-232 or RS-485 interfaces allow for easy communication and for multi-drop capability of up to 256 units (RS-485 only)
- User-friendly interface allows for the programming of high and low gas flow alarms, along with two user-programmable electromechanical SPDT relays with latch options
- Stores calibration information for up to 10 different gases, internal or user-specific K-factors
- Automatic sensor zero offset adjustment (via digital interface or local push button)
- NIST traceable certificate included
- Self-diagnostic tests
1 - 12 of 8,640 Part Numbers
GFM2-AIR-010-A-B-A-L-A-2
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - LED Display
- Output - 0 to 5 Vdc
- Digital Signal - RS-232
GFM2-AIR-010-A-B-A-L-A-5
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - LED Display
- Output - 0 to 5 Vdc
- Digital Signal - RS-485
GFM2-AIR-010-A-B-A-L-A-9
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - LED Display
- Output - 0 to 5 Vdc
- Digital Signal - Profibus
GFM2-AIR-010-A-B-A-L-B-2
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - LED Display
- Output - 4-20 mA
- Digital Signal - RS-232
GFM2-AIR-010-A-B-A-L-B-5
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - LED Display
- Output - 4-20 mA
- Digital Signal - RS-485
GFM2-AIR-010-A-B-A-L-B-9
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - LED Display
- Output - 4-20 mA
- Digital Signal - Profibus
GFM2-AIR-010-A-B-A-N-A-2
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - No Display
- Output - 0 to 5 Vdc
- Digital Signal - RS-232
GFM2-AIR-010-A-B-A-N-A-5
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - No Display
- Output - 0 to 5 Vdc
- Digital Signal - RS-485
GFM2-AIR-010-A-B-A-N-A-9
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - No Display
- Output - 0 to 5 Vdc
- Digital Signal - Profibus
GFM2-AIR-010-A-B-A-N-B-2
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - No Display
- Output - 4-20 mA
- Digital Signal - RS-232
GFM2-AIR-010-A-B-A-N-B-5
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - No Display
- Output - 4-20 mA
- Digital Signal - RS-485
GFM2-AIR-010-A-B-A-N-B-9
- Specialty Gas & K-Factor - Air 1.0000
- Body Size - Low Flow
- Body Material - Aluminum
- Seal Material - Buna-N
- Fitting Size - 1/4” Compression (Low)
- Display - No Display
- Output - 4-20 mA
- Digital Signal - Profibus
1 - 12 of 8,640 Part Numbers
Specifications
Brand
Accuracy
- 1.0 % of Full Scale
Communication
- RS-232C, RS-485
Display
- 2 Line x 16-Characters
- LED Display
Enclosure, Body Material
- Aluminum
- Stainless Steel
Filter
- 5 microns
Flow Rate
- 0.35 to 3.53 scfm (10 to 100 L/minute)
Load Impedance
- 3,000 ohms Min.
Loop Resistance
- 500 ohms
Media
- Clean Gases Compatible with Wetted Parts
O-Ring Material
- Buna-N
- Ethylene Propylene (EPR)
- Fluoroelastomer
- PTFE
Output
- 0-5 Vdc
- 4-20 mA
Power
- 11-26 Vdc
Repeatability
- ± 0.25 % of Full Scale
Response Time
- 2 seconds to within ± 2 % of Actual Flow
Seat / Seal Material
- Buna-N
- Ethylene Propylene (EPR)
- Fluoroelastomer
- PTFE
Supply Pressure
- psig: 500 (kPa: 3,450, bar: 34.5)
Temperature Range
- 0° to 50° C (32° to 122° F)
Tube Connection
- 1/4” Compression Fitting
- 1/8” Compression Fitting
- 3/8” Compression Fitting
Wetted Materials
- 316 Stainless Steel
- Aluminum - Anodized
- Brass
- Gas Flow Measurement
- Gas Flow Control
- Operating Pumps and Valves
- Process Equipment
- Vacuum Processes
- Glass and Metal Coating
- Film Deposition