27
FIGURE 7-4
FMA 5400A/5500A SERIES MAX. FLOW 200, 500 AND 1000
L/MIN CALIBRATION POTENTIOMETER AND JUMPERS
LINEARIZER
FUNCTION
J1A (50%)
J1B (75%)
J1C (100%)
Decrease
1 - 2
4 - 5
7 - 8
Increase
2 - 3
5 - 6
8 - 9
7.3.8
50% Flow Adjustment
Using the flow regulator, increase the flow rate to 50% of full scale flow. Check the
flow rate indicated against the flow calibrator. The output of the flow meter should
read 2.50 Vdc ±63mV (or 12mA ±0.25mA). If the reading is outside of that range,
place the jumper at [J1A] as appropriate to increase or decrease the signal.
Adjust the setting for potentiometer [R38] by using the insulated screwdriver
through the access window, until reading is within specification.
7.3.9
75% Flow Adjustment
Using the flow regulator, increase the flow rate to 75% of full scale flow. Check the
flow rate indicated against the flow calibrator. The output of the flow meter should
read 3.75 Vdc ±63mV (or 16mA ±0.25mA). If the reading is outside of that range,
place the jumper at [J1B] as appropriate to increase or decrease the signal.
Adjust the setting for potentiometer [R39] by using the insulated screwdriver
through the access window, until reading is within specification.
7.3.10
100% Flow Adjustment
Using the flow regulator, increase the flow rate to 100% of full scale flow. Check
the flow rate indicated against the flow calibrator. The output of the flow meter
should read 5.00 Vdc ±63mV (or 20mA ±0.25mA). If the reading is outside of that
range, place the jumper at [J1C] as appropriate to increase or decrease the sig-
nal. Adjust the setting for potentiometer [R40] by using the insulated screwdriver
through the access window, until reading is within specification. Repeat steps
7.2.7 to 7.2.10 at least once more.
7.3.11. VALVE
ADJUSTMENT
7.3.11.1
Valve Adjustment for FMA 5400A/5500A
Series Max. Flow 200, 500 and 1000 L/min
Discontinue the PURGE mode (set valve for the Auto position). DO NOT adjust
the motorized valve for FMA 5400A/5500A Series Max. Flow 200, 500 and 1000
L/min. The motorized valve for these models has been pre-adjusted at the factory.