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Automated Pressure Calibrator
Diagnostics
85
Measure
The Measure diagnostics menu provides information on each PMM connected:
PMM – This is the PMM range and name.
Pressure – This is the pressure measured by the sensor in the PMM.
Temperature – This is the ambient temperature inside the PMM. The
temperature inside the PMM can be as much as 5 °C higher than room
temperature during normal operation.
Test Valve and Ref Valve – This is a normally-closed isolation valve installed on
the internal pressure manifold in front of each PMM. The test valve isolates
pressure to the PMM and is controlled by the internal software. When a PMM is
selected in the Module Selection menu, the test valve should be open. For
manual testing and troubleshooting, select a single PMM and test the valve. In
other modes such as Fast and Auto, the Product opens and closes the valves
based on a control algorithm. If the status is different than that described, the
valve may be malfunctioning. See the Service Manual for replacement
instructions.
The menu also has a Pneumatic self test function located at the bottom of the
menu that automatically tests each PMM to see if the valves are opening and
closing properly. The system controls pressure as necessary and monitor the
valve states. If a valve is not functioning properly, an error with information is
shown that indicates which valve is malfunctioning.
Control
The Control Diagnostics menu provides information about the PCM:
Port Pressure – This menu shows the pressure measurement at the test port,
supply port, and exhaust port.
Control Module – This menu shows the PCM model number, serial number, and
firmware revision.
Control Coefficients – This menu shows the control coefficients (C0) the PCM
is using. To change the coefficients, tune the PCM using the Autotune function
located in this menu.
Autotune
– The Autotune function is a fully automated procedure that runs the
Product through a series of pressures across its ranges. The Product then
changes the control coefficients to provide the best control performance. Use
Autotune only when the control performance is unacceptable. The system must
be leak free, have sufficient volume, and all items on the test port must be rated
for the maximum pressure of the system.
1.888.610.7664 sales@GlobalTestSupply.com
Fluke-Direct.com
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