1 INTRODUCTION
The MCU3 & 4 are environmental Monitoring Control Units (MCU) that provide facilities to monitor
a wide variety of industry standard environmental and other sensors.
The MCU3 provides up to 8 monitoring channels.
The MCU4 provides up to 16 monitoring channels.
The MCU range has been designed primarily for environmental monitoring. However, the
versatility of the range extends its application to other aspects of industry where monitoring of
remotely connected sensors is required. The specification allows the use of any sensor that can
produce a voltage or current output within a specified range.
The versatile design allows a monitoring system to be initially installed using the minimum
number of required channels and then, as the monitoring environment changes, more channels
can be added, or alternative detector heads can be used as required.
Data logging is provided as a standard function. Data is stored within the systems’ non-volatile
memory thereby providing reliable storage without the risk of losing data in the event of total
power loss (mains and battery backup failure). Logged data can be viewed via the LCD display
situated on the front panel in either numerical or graphical form, or alternatively the data may be
transferred to a P.C. (running the Mentor PC Software) via the RS232 output. This provides the
system with an unlimited storage and data-logging medium.
Care has been taken with the design of the MCU housings and internal chassis to facilitate ease
of connection and wire termination. All on-site wiring to the system is via removable screw
terminal connectors.
A monitoring system consists of, as a minimum, an MCU3 Control Unit and 1 detector head. The
MCU Control Unit houses all of the components required to implement a sophisticated and
reliable monitoring system (battery back-up, alarm relays etc).
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