MP Filtri ICM, User Manual

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Introduction 7
1 Introduction
The ICM measures and quantifies the numbers of solid contaminants in Hydraulic,
Lubrication and Transmission applications. The ICM-M is designed to be an ac-
curate instrument for permanently installed applications utilising mineral oil as the
operating fluid. Other fluid media versions are available for offshore [N] and phos-
phate ester [S] applications.
The unit can operate using any of the international standard formats ISO 4406:1999,
NAS 1638, AS 4059E/F and ISO 11218.
The ICM incorporates a machine connector for power and PLC connection, capable
of RS485, CANBUS or 4-20mA signalling. A separate connector is also provided
for simultaneous computer remote monitoring or settings access using RS485 or a
USB:RS485 interface.
The integrated data logger records up to 4000 test results internally, for use where
a computer cannot be permanently connected.
Simple switched inputs and alarm outputs are provided as alternative means of
controlling the testing and signalling the results. The "full colour’’ front panel led
provides a basic indication of the cleanliness level.
The graphical LCD allows direct local display of the results in any selected format.
ICM-W models also perform a measurement of % saturation of Water in oil (RH),
and fluid temperature (°C).
ICM-U models allow instantaneous download of results to a USB stick.
1.1 Operating Principle
The instrument uses a light extinction principle whereby a specially collimated
precision LED light source shines through the fluid and lands on a photodiode.
When a particle passes through the beam it reduces the amount of light received by
the diode, and from this change in condition, the size of the particle can be deduced.