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 Overview

Fast Response, Tight Accuracy!

Mass flow techniques provide RELIABLE, REPEATABLE AND ACCURATE gas flow rate measurements.

HFM-D-301A/HFC-D-303A mass flow instruments have flow ranges from 0-25 slm to 0-1000 slm; provide analog and digital outputs, and are constructed of stainless steel.   Easy, user friendly digital communications with windows based software interface available.  Available with a  variety of elastomer seals for maximum flexibility.

Self diagnostics of the sensor, valve and overflow are included in the digital features. Also of interest is the auto zero feature which detects when the valve is closed and automatically resets the zero. These mass flow meters and controllers can store up to 10 calibrations of different ranges and gases.  Another feature is the built in totalizer for monitoring gas usage under user set conditions.

± (0.5% of reading + 0.2% of full scale) Accuracy

HFM-D-301A_HFC-D-303A Product Overview image.JPGBuy from the designers, Teledyne Hastings, and experience extraordinary customer service. Let us solve your application challenges, by designing and building your flow instruments.

​​​Applications and Industries

  • Leak Testing
  • Thin Film Deposition
  • High Purity Gas Delivery
  • Thermal Flame Spray
  • Gas Blending 
  • Pharmaceutical Process

 Specifications

​​​
HFM-D-301A Meter HFC-D-303A Controller
​Range  (L): 0 - 25 slm to 0 - 300 slm (N2)
(H): 0 - 1000 slm to 0 - 3000 slm
(L): 0 - 25 slm to 0 - 300 slm (N2)
(H): 0 - 1000 slm to 0 - 3000 slm
Accuracy + (0.5% of reading + 0.2% of full scale)+ (0.5of reading + 0.2% of full scale)
​Repeatability + 0.15% of full scale+ 0.15% of full scale
Maximium Working Pressure 500 PSIG (Optional 1000 PSIG) ​500 PSIG (Optional 1000 PSIG)
Settling TimeTypically <1 secondsTypically <1 - 2 seconds
Analog I/O (Standard) ​0 - 5 VDC ​0 - 5 VDC
Analog I/O (Optional) 0 - 10 VDC, 0-20 mA, 4 - 20 mA
0 - 10 VDC, 0-20 mA, 4 - 20 mA
Digital I/O (Standard)​​RS-232, RS-485​RS-232, RS-485
​Analog Connector​15-pin subminiature D​15-pin subminiature D
​Dingial Connector​Dual RJ-12​Dual
J-12
Fittings Surface Mount, Swagelok®, VCO, VCR, NPT​
Surface Mount, Swagelok®, VCO, VCR, NPT​
Power Requirements
11 - 36 VDC @ 3.1 Watt (max), Unipolar or Bipolar (e.g. + 15, + 12 VDC) 11 - 36 VDC @ 3.1 Watt (max), Unipolar or Bipolar (e.g. + 15, + 12 VDC
Wetted Materials ​316L SS, Nickel 200, 304 SS, 302 SS​316L SS, Nickel 200, 304 SS, 302 SS, Kalrez® (Valve Seat)

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