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HIGH-PRESSURE, HIGH-REPEATABILITY
FMA-8500 Series.D-15.ill
MASS FLOWMETERS
For Clean Gases
FMA-8500
Optional
U Up to ±1% Full Scale Accuracy
U ±0.25% Repeatability
U 316 SS Wetted Parts
U Low Pressure Drop
U For Clean, Non-Coating Gases
For Use Up to 4500 psig
U Calibration Available to
1500 psig
This flowmeter is precise and
sophisticated. It must be accurately
calibrated for application conditions.
If in doubt, consult OMEGA’s
Flow Department.
OMEGA® FMA-8500 Series high
pressure mass flowmeters feature
a superior ±0.25% repeatability for
accurate measurement and control
of gas flow. The flow sensor produces
a 0 to 5 Vdc output signal linear to the
mass flow rate for use in recording,
indicating, or control purposes.
Ambient Temperature Range:
SPECIFICATIONS
Accuracy: ±1% full scale at 16 to 27°C
(60 to 80°F) and 10 to 40 psig; ±2% full
scale at 4 to 38°C (40 to 100°F) and
5 to 150 psig
Repeatability: ±0.25%
Time Constant: Three seconds to
reach 98% of final value
Maximum Pressure:
Up to 4500 psi at 66°C (150°F)
Pressure Drop: 10" water, maximum
9/16-18 UNF
(BOTH ENDS)
INLET
Dimensions: mm (inch)
16.0
(0.63)
OUTLET
FLOW
58.4
(2.30)
"X"
4 to 66°C (40 to 150°F)
Output: 0 to 5 Vdc into 1000 V
minimum load; 3 mV rms
maximum ripple
Power: ±15 Vdc; 0.6 W maximum
power consumption
Fittings:
O-Rings/Gaskets: PFA
Transducer Assembly: 316 SS
Leak Rate: 10
Pressure Coefficient: 0.03% shift within
±200 psig of the calibrated pressure
(4.50)
38.1
(1.50)
19.0
(0.75)
114
FMA-8501 shown
with FPW-D15,
±15 Vdc power
supply available
for 115 Vac
wall socket.
Shown smaller
than actual size.
1
⁄4" 316 SS compression fitting
-9
atm/cc-Helium
8 to 32 UNC 2B x 3/8 DP
MTG. HOLES (2)
40.4
(1.59)
(BOTTOM VIEW)
FITTING
(4.66)
38.1
(1.50)
9.1
118
(0.36)
¼" Compression Fitting
D-35
8.9
(0.35)
"X" DIM.
110
(4.32)
20.3
(0.80)
To Order
Visit omega.com/fma8500
for Pricing and Details
Model No. Range
FMA-8500-(*) 0 to 10 SCCM
FMA-8501-(*) 0 to 20 SCCM
FMA-8502-(*) 0 to 50 SCCM
FMA-8503-(*) 0 to 100 SCCM
FMA-8504-(*) 0 to 200 SCCM
FMA-8505-(*) 0 to 500 SCCM
FMA-8506-(*)
FMA-8507-(*)
FMA-8508-(*)
FMA-8509-(*) 0 to 10 SLM
FMA-8510-(*) 0 to 20 SLM
Comes complete with mating connector
and operator’s manual. Calibrations done at
ambient temperature only 20ºC (70ºF).
Please specify gas, inlet and outlet
*
pressure when ordering. For calibrations
between 201 and 999 psig, consult Flow
Engineering for price. For calibrations
between 1000 and 1500 psig, consult Flow
Engineering for price.
For NIST certificate add suffix “-NIST” to
model number, for additional cost.
NIST certificate does not include points.
Ordering Examples: FMA-8501-N2,
0 to 20 SCCM mass flowmeter for nitrogen.
FMA-8509-02, 0 to 1 SLM mass flowmeter
for oxygen.
0 to 1000 SCCM
0 to 2000 SCCM
0 to 5000 SCCM
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