Section 4: Pall PCM500 and PCM500W
Series Fluid Cleanliness Monitor
Principles of Operation
4.1 General Principles
Upon starting a test sequence the PCM500
will self-prime and perform internal checks on
the sample fluid condition. This is an
automatic part of the test time. After
approximately 30 seconds the PCM500 will
start the analysis. The screen will display a
progressive time bar for the duration of the
sampling period and identify the specific
stage in the monitoring cycle above the
progress bar.
During the analysis cycle the sample fluid is
presented to mesh screens in a specified
sequence, which captures contamination that
is larger than mesh pore size.
Particle concentrations are measured and
computed for each specific mesh.
During the sampling sequence, data is
constantly analysed to identify any excessive
variance in temperature, viscosity, and
pressure to ensure results are not spurious.
The PCM500 will advise the user by function
codes, if any excessive variance occurs.
4.2 HMI Control Panel
There are three light emitting diodes (LED) to
indicate PCM500 operational status and two soft-
touch control buttons.
BUTTONS:
• START/STOP/REPEAT (test)
• ON /OFF
The test Start/Stop button is active on
release. The ON button is active on
release but OFF requires pressing for 2 -
3 seconds to shut down.
4.3 Test sampling
The HMI LCD display is designed to provide
clear viewing of the screen menus and test
data. The test sample sequence is initiated
by use of the primary function keys. In edit
mode a keyboard is displayed on the screen,
which enables users to enter, or edit data
including sample points and fluid types.
Blue LED
Green
LED
Red Description
On Off Flash On On
x
External power connected and
battery in charge mode.
x No external power (battery
only)
x PCM500 On - Operational /
Standby
x Test in Progress
x Hardware/Sampling problem
detected
11
To Next Page
Loading...
Need help?
General