HFM-201 / HFC-203

Excellent stability!

Mass HFC 203The HFM-201/HFC-203, Teledyne Hastings' flexible, general purpose series of mass flow meters and controllers accurately measure and control mass flow in a variety of applications. Featuring reliability and stability, the 200 Series is chosen for its very stable performance with varying ambient conditions. A wide choice of elastomer seals make this flow controller compatible with most gases.

The HFM-201 / HFC-203 me​ters and controllers have flow ranges from 0-25 slm to flows of 0-1000 slm; provide analog outputs, are constructed of stainless steel and can be configured with normally open or normally closed valves. The full scale range is specified by the end user. A NIST traceable calibration certificate is standard. Many corrosive gases and pressures up to 1000 psig are easily measured. Cleaning for oxygen service is available.

±(1% of full scale) Accuracy

Buy from the designers and experience extraordinary customer service. Let us solve your application challenges, by designing and building your custom flow instruments. ​​​

Applications and Industries

  • Flame Spray
  • Leak Test
  • Aerospace
  • Porosity Studies
  • Air Sampling​

HFM-201 Flow Meter

​Range (User Selectable)(L): 0 - 25 slm to 0 - 500 slm (N₂)
(H): 0 - 500 slm to 0 - 1000 slm (N₂)
Accuracy± 1% of full scale
Repeatability± 0.05% of full scale
Maximum Working Pressure500 PSIG (Optional 1000 PSIG)
Analog I/O (Standard)​​0 - 5 VDC
Analog I/O (Optional)4 - 20 mA I/O, 0 - 20 mA, 0 -5 VDC / 4 - 20 mA I/O
Fittings OptionVCR®, VCO®, Swagelok®, Straight Thread, NPT
​Connector (+/- 15 VDC)​15-pin subminiature D
​Connector (+ 24 VDC)9-pin subminiature D
Power Requirements (+​ 15V)
± (14 - 16) VDC @ +30 mA (<1 Watt)
Power Requirements (+​ 24V)
(14 - 32) VDC (<1.9 Watt)
Wetted Materials​316L SS, Viton®, 82/18 Au/Ni Braze, Trace Ag Solder

HFC-203 Flow Controller

​Range (User Selectable)(L): 0 - 25 slm to 0 - 500 slm (N₂)
(H): 0 - 500 slm to 0 - 1000 slm (N₂)
Accuracy± 1% of full scale
Repeatability± 0.05% of full scale
Maximum Working Pressure500 PSIG ​(Optional 1000 PSIG)
Analog I/O (Standard)​​0 - 5 VDC
Analog I/O (Optional)4 - 20 mA I/O, 0 - 20 mA, 0 -5 VDC / 4 - 20 mA I/O
Fittings OptionVCR®, VCO®, Swagelok®, Straight Thread, NPT
​Connector (+/- 15 VDC)​15-pin subminiature D
​Connector (+ 24 VDC)9-pin subminiature D
Power Requirements (+​ 15V)
± (14 - 16) VDC @ +​60 mA / -185 mA (<3 Watt)
Power Requirements (+​ 24V)
(14 - 32) VDC (<4.2 Watt)
Wetted Materials302 SS, 316 SS, Nickel, Viton®, 82/18 Au/Ni Braze, Trace Ag Solder, Kalrez® (Valve Seat)