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Chapter 1. Installation and Wiring
1.4 Choosing an Installation Site
You should have discussed environmental and installation factors with a GE applications engineer or field sales person
by the time you receive the meter. The equipment provided should be suited to your application and installation site.
The moisture.IQ is available in rack-mount, bench top, or panel-mount versions that are suitable for most indoor
installations. GE also provides weatherproof and explosion-proof housings for outdoor and hazardous area locations.
See the drawings in the Certification and Safety Statements at the end of this manual for details of each enclosure.
Before installing the unit, read the guidelines below to verify that you have selected the best installation site.
1.4.1 General Site Guidelines
•
Choose an installation site for the probes and sample systems that is as close to the process line as possible.
Avoid long lengths of connecting tubing. If long distances are unavoidable, a fast sampling by-pass loop is
recommended. Do not install any other components, such as filters, upstream from the probes or sample system
unless instructed to do so by GE.
•
Observe all normal safety precautions. Use the probes within their maximum pressure and temperature ratings.
•
Although the moisture.IQ may not need to be accessed during normal operation, install the electronics unit at a
convenient location for programming, testing and servicing. A control room or instrument shed are typical
locations.
•
Locate the electronics unit away from high temperatures, strong electrical transients, mechanical vibrations,
corrosive atmospheres, and any other conditions that could damage or interfere with the meter operation. See
Chapter 9. "Specifications" on page 95 for environmental limits.
•
Protect the probe cables from excessive physical strain (e.g., bending, pulling, twisting, etc.).
•
Observe the proper cable restrictions for the probes. You can locate Moisture Image Series probes up to
915 m (3000 ft) from the electronics unit with unshielded twisted-pair cable. M-Series probes can be located up
to 600 m (2000 ft) from the unit with the use of specially shielded cable.
1.4.2 Low Voltage Directive
If the power mains switch on the unit remains accessible to the user after installation a disconnect device is not
required. However, if installation blocks access to the power mains switch, compliance with the EU Low Voltage
Directive (IEC 61010) requires an external power disconnect device such as a switch or circuit breaker. The disconnect
device must be marked as such, clearly visible, directly accessible, and located within 1.8 m (6 ft) of the unit.
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moisture.IQ User's Guide
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