High Flowrate Mass Controllers and Meters for All Clean Gases |
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±1% Accuracy (Up to 500 SLM), ±0.2% Repeatability
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Low Cost
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For Flowrates Up to 1000 SLM
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Normally Closed Valve for Added Safety
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Fast Response
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Altitude Insensitive
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Removable Sensing Tube Assembly
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View related products - Electronic Mass Flowmeters
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The OMEGA® FMA-700A and 800A Series mass flowmeters and controllers extend the range of mass flow
measurement and control from 0 to 5 SCCM to 1000 SLM with 50:1 turndown capability. Like all mass flow
sensors, these new units measure mass flow rate directly, without the need for temperature or pressure
corrections.
The FMA-700A and 800A Series work on the heated bypass sensor tube principle. The units feature corrosion
resistant stainless steel and FKM construction and a 325 mesh (44 micron) inlet screen to prevent
contamination of the sensor. The flow body and valve leak less than 10-8 atm-cc/sec of helium.
In the event of a power failure, the valve is normally closed.
The FMA-78P2 and FMA-78P4 are 2- and 4-channel readout/power supply/setpoint control electronic
boxes for use with FMA-700A and 800A Series mass flow sensors. The units feature 000.0 to 102.4%
of full scale display, a ±15 Vdc power supply, setpoint potentiometers (for mass flow controllers),
power cord, and an electrical connector for hookup of the electronics boxes’ outputs.
The FMA-78P Series rate indicators/electronics packages also have back-panel blend control switches
that select independent/slave operations for each channel (channel 1 is the master), and the
units include a 0 to 5 Vdc output for each channel for chart recording, data acquisition, or computer
interfacing.
SPECIFICATIONS
Accuracy: ±1% full scale (up to 500 SLM), ±2% full scale for 750 to 1000 SLM
Repeatability: ±0.2% full scale
Turndown Ratio: 50:1
Response Time: 2.0 seconds
Analog Setpoint:
0 to 5 Vdc: Voltage output models
4 to 20 mA: Current output models
Linear Output:
Standard: 0 to 5 Vdc into 2000 Ω min.
Optional: 4 to 20 mA, into 200 to 750 Ω
Max Pressure:
††FMA-760A to FMA-772A: 1000 psig
FMA-773A to 778A: 200 psig
††FMA-860A to FMA-874A: 1500 psig
FMA-875A to FMA-878A: 1000 psig
†† For maximum pressures up to 3000 psig, consult Flow Engineering for quote.
Pressure Coefficient: 0.1% typical
Differential Pressure:
FMA-800A Series: 0.5 psid
FMA-700A Series: No less than 20% of supply pressure, depending on parameters
Temperature Range (Gas and Ambient): -10 to 70°C (14 to 158°F)
Temperature Coefficient: 0.05% full scale/°C
Wetted Parts: 316 SS body and sensing tube assembly, FKM elastomers, other materials available
POWER
Voltage Output Models: 12 Vdc (±5%) or 15 Vdc (±10%)
mA Output Models: 15 Vdc (±5%) or 24 Vdc (±15%)
Current Consumption:
FMA-800A: <45 mA DC
FMA-700A: <250 mA DC
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† All dollar amounts on this site are shown in US currency.
Note: Comes complete with operator's manual and mating connector.
(*)Replace asterisk in part number with gas name and inlet/outlet pressure.
For 4-20 mA output replace the "-V" suffix with "-I", no additional cost.
NOTE: All flow ranges are specified for Nitrogen or Air. when used for other gases, a correlation factor is used to determine flow rate.
Calibrations done at ambient temperature only (20° or 70°F)
For NIST calibration, add suffix, "-NIST" to model number, add $250 to cost.
†† For maximum pressures up to 3000 pounds, consult Flow Engineering for a quote.
(OPTIONS SHOWN IN THIS "NOTE" ABOVE ARE PRICED IN US$)
Ordering Example: (1) FMA-869A-V 5 LPM Max, 1/4" Compression Fitting, 0-5 Volt Output, $982.00, plus (1) FPW-15 15 Vdc Power Supply, $79.00, $982.00 + 79.00 = $1,061.00
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Related Links -
Manual
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Product Manual
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Download
FMA-700 and FMA-800 Series - Mass Flow Meter/Computer
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Download
FMA-78P2 and FMA-78P4 - Electronic Boxes
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