Mounting Requirements In Heated Or Cooled Pipelines - Emerson Daniel 3812 Installation Manual

Mechanical Installation
January 2019
8. NEVER apply shock loads to the meter. Always lift the meter gradually. If shock
2.5 Mounting requirements in heated or cooled
pipelines
The ambient operating temperature of the 3812 Liquid Allocation electronics (i.e.
Flameproof enclosure and Intrinsically safe base enclosure) is -40 °C to +60 °C (-40 °F to
+140 °F).
If the meter is installed into a pipeline which is heated or cooled outside this temperature
range it is necessary to remove the Transmitter Electronics enclosure from the meter body
(i.e. Spool piece acting as process fluid conduit) and mount it next to the meter body on a
pipe stand or other rigid structure. The process temperature must also not exceed the
operating temperature range of the transducers. LT-10 and LT-11 operating temperature
range -50 °C to 135 °C (-58 °F to +275 °F) with NBR o-rings and operating temperature
range -40 °C to +150 °C (-40 °F to +302 °F with FKM o-rings).
CAUTION
SURFACE TEMPERATURE HAZARD
The meter body and piping may be extremely hot or cold. Wear appropriate personal
protective equipment when coming in contact with the meter.
Failure to comply may result in injury.
44
the upper enclosure installed but with out the bolts installed, may cause the
electronics to fall and cause personal injury or electronics damage.
Figure 2-12: Incorrect sling attachment
loading ever occurs, the slings must be inspected per manufacturer's procedures
prior to being placed in any further service.
Installation manual
3-9000-765
3812 Liquid Ultrasonic Flow Meter