Parker Porter MPC Series, Инструкция по установке, программированию и эксплуатации

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MISCELLANEOUS ERRORS
ERROR POSSIBLE CAUSE CORRECTIVE ACTION
Flow rate display does not reach
zero (0) when actual flow stops.
Display does not read
‘ OFF ’
even if valve is fully closed.
▪
Zero point deviation due to
pressure effect.
▪
Gas type setup is incorrect.
▪
Condensation on sensor.
▪
Particulate in sensor.
▪
Match the inlet pressure setting
(function setup
C-20 ’
) with the
actual inlet pressure used or the
PV forced zero function (function
setup
‘ C-29 ’
).
▪
Match the gas type setting
(function setup ‘ C-18 ’ ) with the
actual gas used.
▪
Install an upstream filter.
▪
Contact factory.
Flow rate does not stabilize.
▪
Operational differential pressure
range is exceeded.
▪
Excessive supply pressure
fluctuations.
▪
Pressure regulator compatibility.
▪
Excessive pressure drop
(excessive supply pressure
fluctuations versus flow
changes).
▪
Reduce the supply pressure.
▪
Install a pressure regulator to
regulate supply pressure.
▪
Adjust the pressure regulator
setting or apply the PV filter
(function setup
‘ C-23 ’
).
▪
Increase the tubing diameter.
Poor accuracy.
▪
Temperature reference not
identical to reference
flowmeter.
▪
Pressure regulator is vibrating
slightly.
▪
Particulate in sensor.
▪
Match the temperature
reference (function setup
‘ C-
19 ’ ).
▪
Adjust the pressure regulator
setting.
▪
Contact factory.