Omega FMA-100 and FMA-200 Owner Manual

Below you will find brief information for Mass Flow Controller FMA 100, Mass Flow Meter FMA 200. The FMA-100 and FMA-200 are designed for the measurement and control of gas mass flow. These flow meters and controllers rely on a large diameter thermal mass flow sensor which is virtually clog-proof. The unique straight sensor tube has access ports at either end, permitting easy cleaning.

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OMEGA FMA 100, 200 Operator's Manual | Manualzz

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Key features

  • Large diameter thermal mass flow sensor
  • Straight sensor tube with access ports
  • 316 stainless steel wetted surfaces
  • Viton seals standard
  • Controllers incorporate an electromagnetic proportional control valve
  • Precision analog circuitry with a five breakpoint linearizer

Frequently asked questions

The FMA-100 and FMA-200 are designed for the measurement and control of gas mass flow.

The operating principle of the FMA-100/200 is based on heat transfer and the first law of thermodynamics. The process gas enters the instrument's flow body and divides into two flow paths, one through the sensor tube, the other through the laminar flow element.

The standard output for FMA-100/200 meters and controllers is a 0-5 Vdc signal, which directly corresponds to the 0-100% mass flow full scale range.

The wetted materials are 316 stainless steel; Viton O-rings standard; Neoprene and 4079 Kal-Rez O-rings optional, others on special order.

Remove the two socket head access port plugs with a 1/4” Allen wrench. Visually inspect the sensing ports and sensor. Rod out the sensor using a 0.020” to 0.028” diameter piece of piano wire. In cases where solids are deposited in the sensor, return the unit to the factory for complete cleaning and recalibration. We recommend a final flush with Freon TF and drying with dry nitrogen.
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