Choosing An Installation Site; General Site Guidelines; Low Voltage Directive - GE moisture.iq User Manual

Chapter 1. Installation

1.4 Choosing an Installation Site

You should have discussed environmental and installation factors with a BHGE 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. BHGE 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 BHGE.
•
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 99 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.
2 moisture.IQ User's Manual