AAlborg GFC Thermal Mass Gas Flow Control Flowmeter

Model GFC thermal mass flow controllers are designed to display control and set flow rates of gases.

Built-in electromagnetic valve allows flow to pass at a certain value. The valve is normally closed as a safety feature to ensure that gas flow is interrupted in the event of a power failure.

The adjustment range can be adjusted externally and internally.

Technical Properties

• Brand / Model Aalborg / GFC17, 37, 47, 57, 67, 77
• Analog Output 4 - 2mA, 0 - 5 VDC
• Vlaf External Control Signal 4 - 2mA, 0 - 5 VDC
• Sensitivity GFC17, 37.47; 0 -100% ±1%; GFC57, 67, 77; 20 - 100 ±1.5, GFC67, 77; 0-20% ±3%
• Sampling Time GFC17: 300ms, GFC37, 47: 600ms, GFC57, 67, 77: Within ±2% of actual flow rate over 2% to 100% of 1800 F.S
• Ambient temperature 0….50°C
• Measurement Ratio 40:1
• Supply Voltage 12 Vdc 26Vdc 650mA
• Fluid Contact Surface Material. Aluminium, 316L rust. Steel
• Operating temperature -10…50°C
• Display can be moved up and down 90 degrees LCD
• Pressure GFC17, 37, 47: 1000 PSI, GFC57, 67, 77: 500 PSI
• Measuring Range 0 - 10 l/min to 0-1000 L/min
• Line Diameter 1/4" - 3/4"
• O-Ring Buna-N, Viton EPR PTFE / Kalrez