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The FMA-A2100/2200/2300/2400 Series Electronic Mass Flowmeters/ Controllers provide high performance, versatility and state-of-the-art design in one compact package. The FMA-A2100/ 2200/2300/2400 uses capillary-type thermal technology to directly measure mass flow of gases. No temperature, pressure, or square root corrections are required. The FMA-A2300/2400 Series comes with an LCD display, and all models come with linear 0-5 and 4-20 mA output.

The FMA-A2100/2200/2300/2400 measures the mass flowrate of gases in 24 ranges from 0-10 SCCM to 0-100 SLM. For the complete listing, refer to the range table below. The FMA-A2100/2200/ 2300/2400 Series is compatible with most noncorrosive gases. The user is advised to check the wetted materials against gas compatibility.

OMEGA’s Mass Flow Controllers use an internal electromagnetic proportional valve to control the mass flowrate. A command signal can be supplied either by the internal setpoint pot or by a 0-5 Vdc external source.

SPECIFICATIONS
Accuracy: ±1% of full scale including linearity
Repeatability: ±0.15% full scale or better
Turndown Ratio: 100:1
Response Time: 5 seconds
Gas Ambient Temperature: 0 to 50°C (32 to 122°F)
Temperature Coefficient: 0.05% full scale per 1°C or better
Pressure Coefficient: 0.01% full scale per psi or better
Minimum Pressure Requirements:
Meters: 1 inch of H₂O
Controllers ≤1 SLM: 1 psi
Controllers >20 SLM: 20 psi
Differential Pressure for Mass Flow Controllers:
<5 LPM: 5 to 50 psi standard
>5 LPM: 20 to 40 psi standard
Maximum Gas Pressure:
Polyacetal: 250 psig
316 SS: 500 psig
Leak Integrity: 1 x10^-6 cc/min of He or better
Wetted Parts:
Standard: Polyacetal, FKM O-rings
Optional: 316 SS, FKM O-rings
Connections: 1/4 FNPT standard; 1/4″ compression fitting for all stainless steel models
Input/Output Connection: 9-pin sub-D connector
Control Signal: 0 to 5 Vdc
Control Valve: Electromagnetic normally closed
Output signal: Linear 0 to 5 Vdc, 1000 Ω min load, 4 to 20 mA, 500 Ω loop resistance
Input Power:
Meters: 24 Vdc @ 150 mA, 115 Vac, 220 Vac with AC adaptor
Controller: 24 Vdc @ 300 mA, 115 Vac, 220 Vac with AC adaptor