Emerson Process Management ControlWave XFC - Manual (Page 52)

2-10 / Installation & Operation CI-ControlWave XFC
The two process flange assemblies are held in place by four bolts and nuts. When the bolts
are removed, the flanges can be repositioned so that the connections can emanate from the
front, rear or bottom of the transmitter. Care should be taken not to damage the sensor
module assembly during this procedure. Once the flange has been positioned, the bolts
should be tightened in an alternating sequence to about 20-30 foot-pounds of torque.
Optional Process Manifold Blocks: Process manifold blocks may be installed on the
transmitter to permit the use of connector assemblies having different connection centers.
The manifold blocks, which are oval in appearance, mate with the transmitter's process
flange. The blocks may be installed in several positions to achieve different connection
centers as shown in Figure 2-4.
MVT Interface Cable: An interface, connected to the top of the MVT, is factory connected
to Connector P1 near the bottom of the rear side of the System Controller & I/O Board
assembly. This cable is keyed to simplify installation.
2.3.1.2 Connection to a Gage Pressure Transducer (GPT)
One optional Gage Pressure Transducer (GPT) (secured to the bottom of the enclosure) can
be provided (in lieu of a MVT) with each ControlWave XFC. Gage Pressure Transducers
are equipped with a 1/2-14 NPT male pipe fitting (see Figures 2-2B & 2-3).
2.3.1.3 Case Rotation
Once mounted, the Case (XFC Housing) can be rotated up to 180° in either direction, i.e.,
clockwise or counterclockwise. The Case (XFC Housing) must not be rotated from its
shipped position any more than 180° clockwise or counterclockwise. CAUTION:
ControlWave XFC may be damaged if the Case (XFC Housing) is rotated more than
180° from its shipped position.
To rotate the XFC Housing, the setscrew that locks the Multivariable Transducer (MVT) to
the XFC Housing must be removed with a 3mm Hex Wrench. Once the XFC Housing has
been turned to the desired position, be sure to replace and tighten the set-screw (see Figure
2-5).
2.3.1.4 Process Pipeline Connection (Meter Runs without Cathodic Protection)
ControlWave XFCs equipped with an optional Multivariable Transducer (MVT) may be
mounted directly on the pipeline or remotely on a vertical or horizontal stand-alone two-
inch pipe or on a wall or panel. ControlWave XFCs equipped with an optional Gage
Pressure Transducer (GPT) may ONLY be mounted remotely, i.e., on a vertical or
horizontal stand-alone two-inch pipe or on a wall or panel. The Earth Ground Cable is to
run between the ControlWave XFC’s Ground Lug and Earth Ground (Rod or Bed) even
though the ControlWave XFC units equipped with a MVT or GPT Transducer may be
grounded to the pipeline. If any pressure transmitters or pulse transducers are remotely
mounted, connect their chassis grounds to the pipeline or earth ground.
Note: Remote installation of a unit, without Cathodic protection, is similar to that
of Figure 2-6 except it doesn’t utilize the Transducer to Manifold Dielectric
Isolation Kit (see Figure 2-7).