Omega fma 1500 Manual Do Utilizador

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.

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

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, VITON

7 O-rings; BUNA-N7, NEOPRENE7 or

KALREZ

7 O-rings are optional.

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