Page 16/58IOM BiRotor Plus R27
8.2 - Installing the Instrument
1. Remove the inlet and outlet protection covers.
2. Install the instrument into the pipe work
using suitable hardware as specified in the
local codes and regulations. Ensure that the
connections are made tight and torqued to the
correct values.
3. Connect the instrument wiring, refer to Figures
9-1 and 9-2. Cable entry into the electrical
enclosure is by two 3/4-14 NPT female threads.
All flame paths must be protected from
damage during work.
4. Use wiring appropriate for the location and
operating conditions. Wiring glands and/or
conduits must conform to local electrical codes
and regulations if wiring is to be installed in a
hazardous area.
NOTE:
For additional requirements on installation please
refer to Chapter 2, Essential Instructions, at the
beginning of this manual.
If the instrument is being installed with additional
accessories, the instructions for those accessories
should be read and understood before continuing
with the installation. The output signal from the
preamplifier, if one is fitted, can be altered to
interface with most electronic accessories. This is
accomplished by the use of jumpers on the circuit
board. Refer to Figure 8-1 for their configurations.
The UMB housing may be rotated in 90°
increments to accommodate the mounting of
accessories. If the UMB housing is removed for
any reason, the flame path at the base must not
be damaged. No repair is allowed if the surface is
damaged. Care must also be taken to disconnect
the sensor wires to prevent damage. It is
essential that the four retaining screws used to
secure the UMB housing to the meter body be
torqued to 55 in/lbs.
Internal grounding terminal must be used for the
equipment grounding connection, and the external
terminal is for supplementary bonding connection.
Grounding symbol congruent to IEC 60417 number
5019 located on the grounding connection to UMB.
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