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4. SPECIFICATIONS
FLOW MEDIUM: Please note that FMA 1400/1500 Mass Flow Meters and Controllers for
ranges up to and above 10 L/min are designed to work with clean gases only. Never try to
meter or control flow rates of liquids with any FMA 1500's or FMA 1400's.
CALIBRATIONS: Performed at standard conditions [14.7 psia (1.01 bars) and 70
F
F
(21.1
F
C)] unless otherwise requested or stated.
ENVIRONMENTAL (per IEC 664): Installation Level II; Pollution Degree II
4.1 FMA 1500 Mass Flow Meters
for ranges up to and above 10 L/min
ACCURACY: +
1% of full scale, including linearity for gas temperatures ranging from
59
F
F to 77
F
F (15
F
C to 25
F
C) and pressures of 10 to 60 psia (0.7 to 4.1 bars).
REPEATABILITY: +
0.2% of full scale.
TEMPERATURE COEFFICIENT: 0.1% of full scale/
F
C.
PRESSURE COEFFICIENT: 0.01% of full scale/psi (0.07 bar).
RESPONSE TIME: 300ms time constant; approximately 1 second to within +2% of set
flow rate for 25% to 100% of full scale flow rate.
GAS PRESSURE: 500 psig (34.5 bars) maximum; optimum pressure is 20 psig (1.4 bars).
GAS AND AMBIENT TEMPERATURE: 41
F
F to 122
F
F (5
F
C to 50
F
C).
RELATIVE GAS HUMIDITY: Up to 70%.
LEAK INTEGRITY: 1 x 10
-9
sccs He maximum to the outside environment.
ATTITUDE SENSITIVITY: 1% shift for a 90 degree rotation from horizontal to vertical;
standard calibration is in horizontal position.
OUTPUT SIGNALS: Linear 0-5 VDC (2000 Ω minimum load impedance); 4-20 mA
optional (50-500 Ω maximum loop resistance); 20 mV peak to peak max noise.
TRANSDUCER INPUT POWER: +15 +
5% VDC, 80 mA max, 1.2 watts; -15 +5% VDC, 10
mA max, 0.15 watts.
Power inputs are each protected by a 750mA M (medium time-lag) resettable fuse, and a
rectifier diode for polarity protection.
WETTED MATERIALS: 316 stainless steel, VITON7 O-rings; BUNA-N7, NEOPRENE7 or
KALREZ7 O-rings are optional.
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