7
4.
SPECIFICATIONS
FLOW MEDIUM:
Please note that FMA 4000 Mass Flow Meters are designed to work only
with clean gases.
Never
try to measure flow rates of liquids with any FMA 4000.
CALIBRATIONS:
Performed at standard conditions [14.7 psia (101.4 kPa) and 70
F
F
(21.1
F
C)] unless otherwise requested or stated.
ENVIRONMENTAL
(PER IEC 664): Installation Level II; Pollution Degree II.
FLOW ACCURACY
(INCLUDING LINEARITY): ±1% of FS at calibration temperature and
pressure.
REPEATABILITY:
±0.15% of full scale.
FLOW TEMPERATURE COEFFICIENT:
0.15% of full scale/
F
C or better.
FLOW PRESSURE COEFFICIENT:
0.01% of full scale/psi (6.895 kPa) or better.
FLOW RESPONSE TIME:
1000ms time constant; approximately 2 seconds to within ±2%
of set flow rate for 25% to 100% of full scale flow.
MAXIMUM GAS PRESSURE:
500 psig (3447 kPa gauge).
MAXIMUM PRESSURE DROP:
0.18 PSID (at 10 L/min flow). See Table IV for
pressure drops associated with various models and flow rates.
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:
Incremental deviation of up to 1% from stated accuracy, after re-
zeroing.
OUTPUT SIGNALS:
Linear 0-5 Vdc (3000 ohms min load impedance);
Linear 4-20 mA (500 ohms maximum loop resistance).
Maximum noise 20mV peak to peak (for 0-5 Vdc output).
TRANSDUCER INPUT POWER:
11 to 26 Vdc, 100 mV maximum peak to peak output
noise.
Power consumption:
+12Vdc (200 mA maximum);
+24Vdc (100 mA maximum);
Circuit board have built-in polarity reversal protection, 300mA resettable fuse provide
power input protection.
WETTED MATERIALS:
Anodized aluminum, brass, 316 stainless steel, 416 stainless steel,
FKM, O-rings; BUNA-N
7
, NEOPRENE
7
or KALREZ
7
O-rings are optional.