Page 5 - Proportion-Air - F-series Electro-Pneumatic Flow Monitor

F-SERIES PERFORMANCE CHARACTERISTICS

LINEARITY CHART 1
100
90 Measured at 100psig (6.89 bar)
80 3/4 250 (118)
70
Flow [% of scale] 60 Port 1/2 25 (12) 100 (47)

50
Size
(inch)
40
3/8
30
20 1/4 10 (5)
10 50 100 150 200 250
0 (24) (47) (71) (94) (118)
0 1 2 3 4 5 6 7 8 9 10 Maximum Flow SCFM (Liters/Sec)

Output Signal [Volts] Port Selection Based on Maximum Flow

This chart shows linear characteristics of the F-Series Use CHART 1 to select the appropriate port size
flow monitor with a signal output of 1-10 volts. Char- based on your applications maximum flow.
acteristics would be similar for 5.6-20 mA units.

NON-PRESSURE COMPENSATED
300 This graph illustrates the effect of varying supply pres-
(141.58)
sures on the flow output signal of an FR model flow
250
(117.99) transducer. This graph can be used to correct for
variations in gas density due to temperature or the
200 100 PSI specific gravity of different gasses by purposely alter-
Actual SCFM (Liters/sec) (70.80) 80 PSI ing the supply pressure with a Proportion-Air pressure
(94.39)
90 PSI
150
70 PSI
control valve. Fixing the inlet pressure to a constant
60 PSI
value by regulating it to one pressure produces a line-
100
50 PSI
(47.20)
50 40 PSI arly proportional signal.
30 PSI
(23.60)
0
0 50 (23.60) 100 (47.20) 150 (70.80) 200 (94.39) 250 (117.99) 300 (141.58) PRESSURE COMPENSATED
Flow Output Signal SCFM (Liters/sec)
14
12
Ideal
10
100 PSI
90 PSI
This graph illustrates how effectively the FP model 8 80 PSI
flow transducer automatically corrects the flow output Output Voltage 6 70 PSI
60 PSI
signal when the supply pressure varies over a wide 4 50 PSI
range. Compare this to the results of a traditional 40 PSI
non-pressure compensated flow transducer as shown 2 30 PSI
in the “NON-PRESSURE COMPENSATED” graph. 0
165 psia model is shown. 0 50 (23.60) 100 (47.20) 150 (70.80) 200 (94.39) 250 (117.99)
-2
Flow in SCFM (Liters/sec)

LET’S TALK 317-335-2602 * PROPORTION-AIR * BRF-SERIES0405E 5