6
General guidelines
The following conditions must be met:
• Before operation, you must be able to stop flow through the sensor.
(During the zeroing procedure, flow must be stopped completely, and
the sensor must be full of process fluid.)
• During operation, the sensor must remain full of process fluid.
• The sensor must be installed in an area that is compatible with the
classification specified on the sensor approvals tag (see Figures 1-4).
Hazardous area installations
Make sure the hazardous area specified on the sensor approvals tag is
suitable for the environment in which the sensor is installed. See
Figures 1-4. For installation in an area that requires intrinsic safety, refer
to Micro Motion UL, CSA, or ATEX documentation, shipped with the
sensor or available from the Micro Motion web site.
For a complete list of hazardous area classifications for Micro Motion
sensors, refer to the Expert
2
system at www.expert2.com.
Environmental limits
Install the sensor in a location that falls within the following limits:
• Process fluid temperature limits between –40 to +140 °F
(–40 to +60 °C) for the integrally mounted booster amplifier with
either the core processor or junction box.
• Process fluid temperature limits between –400 to +400 °F
(–240 to +200 °C) for the remotely mounted booster amplifier with
either the core processor or junction box.
• Ambient temperature limits between –40 to +140 °F (–40 to +60 °C)
with core processor or junction box.
For ATEX approvals, process fluid temperature can be further restricted
by ambient temperatures. For guidelines, go to
www.micromotion.com/atex.
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