Honeywell Enraf Operation Manual page 57

Part No.: 44200004 - Revision 2
Calibration
After selecting Run Calibration following screen appears.
Prover Status · Prover Calibration
Piston
Motor
Error Status
Cycle
Stop Time
Sweep Time
Press OK to enter menu
15. Water should now be draining into the wastewater container until
the flag reaches the first optical (volume) switch. Note: To decrease
the time necessary to reach the first volume switch, valve V5 may be
opened until just before the first volume switch has been reached.
16. When the first optical switch is reached, the signal will be sent to the
SVP controller to switch the valves (turn the bypass valve SV2 OFF and
turn the draw valve SV1 ON). At that time the water will start flowing
into the Test Measure.
17. Record the prover pressure (Pp) at P1 while only the water draw valve is
open (SV1). Valves V5 and V6 must be closed while recording this pressure,
which is the pressure at the start and the end of volume switching. Note:
The draw can be sped up by opening valve V6 after the valves have
switched to flowing into the Test Measure located on the scale and the
prover pressure (Pp) is recorded. Again close V6 at least 13mm or 2L
(1/2" or 1/2 gal) prior to solenoid draw valve switching.
18. Record ambient temperature (Ta) at T4.
19. Record temperature (Td) at T2, which is the detector temperature, by
opening the drive cover and placing the thermometer midway between
volume switches, which is the location of the switch bar temperature
transmitter thermowell.
20. Record fluid temperature (Tp) at T1 (at prover).
21. Allow Test Measure located on the scale to fill until the second volume
switch (downstream sensor) is reached resulting in the draw valve (SV1)
turning OFF and bypass valve (SV2) turning ON. Carefully record scale
reading (Ww).
SVP Controller Operation Manual
Retract To Down Sensor
Waiting Motor Switch
No Error
774
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Run
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