Thermal mass flow meter GF40
for gasstainless steel4-20 mA

thermal mass flow meter
thermal mass flow meter
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thermal mass
for gas
stainless steel
4-20 mA, RS485
Supply voltage
24 Vdc, 12 Vdc
Other characteristics
compact, high-accuracy, programmable, combined
Process temperature

Min.: 5 °C
(41 °F)

Max.: 50 °C
(122 °F)

Process pressure

Min.: 0 bar
(0 psi)

Max.: 10 bar
(145.04 psi)


0.35 %, 1 %


0.2 %


Elastomer Sealed Thermal Mass Flow Controllers & Meters One device. Multiple gases and flows. Maximum flexibility. Multiple gases in one device equals maximum process flexibility and productivity. The GF40 Series elastomer sealed mass flow controllers and meters with Brooks Instrument’s exclusive MultiFlo™ technology provide the perfect choice for systems, processes and facilities that use a variety of gases, change gas types frequently or need to re-range while preserving gas measurement and control accuracy. It enables a new level of process flexibility combined with unprecedented flow measurement and control performance. Features • Programmable multi-gas/multi-range capabilities • Brooks® MultiFlo™ gas database contains thousands of native gas runs to establish correction functions • Sub-1 second flow response time and accuracy of 1% set point for demanding applications • Well suited for a variety of gases • Fast response, Hastelloy sensor • Easily accessible diagnostic service port is independent of tool communication • Multi-protocol communication options include DeviceNet™, EtherCAT®, Profibus® and RS-485 analog interface Benefits MultiFlo™ technology enables new gas calibrations and full-scale ranges without removing the MFC from the gas line, maximizing process uptime MultiFlo™ programming is simple and user-friendly; new gas can be selected in under 60 seconds OEMs and large end users can greatly reduce the number of gas and range-specific controllers they inventory Excellent process gas accuracy backed by superior metrology systems and calibration based on global standards



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    *Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.