Intek RheoVac 950 User Manual
Page 8
- 6 -
Figure 3
Probe Stop Clamp
2.3
MOUNTING HARDWARE INSTALLATION
Î
Check hardware. Verify that the probe slides through the hot tap assembly.
Ï
Check installation configuration. Make sure the probe is parallel to the floor (see Figure 4).
Be sure location is accessible for probe removal and maintenance.
Ð
Check installation clearance. Verify there is a minimum probe insertion clearance of 4 feet
(1.3m) between pipe surface and any obstruction.
Ñ
Install the mounting hardware. Drill a 1½” through-hole, center the thread-o-let over the
hole and weld it onto the condenser vacuum pipe (see Figure 4). Thread the hot-tap
assembly into the thread-o-let. Use thread tape or pipe dope to seal the connection.
(Alternate: weld thread-o-let to pipe wall, then drill a 1¼" hole in pipe wall using a hot-tap
drill.)
Ò
It may be necessary to apply a force of about 23 lb (102 Newtons) to remove or replace the
probe under plant operating conditions.
2.4
PROBE INSTALLATION AND ORIENTATION
Î
Check proper installation direction. Each probe has a directional
arrow on the junction box. Before installing the unit, note proper
flow direction. This is important to instrument operation.
Ï
Check serial number (S/N). If more than one RheoVac unit has been
purchased, make sure the first five digits of the serial numbers of the
probe(s) match the first five digits of the serial number of the main
processor unit. The electronics and up to three probes are a matched
set. Mismatched components will not work correctly. The dash
number on the probe S/N is the probe number shown on the display.
Record the probe num ber and installation location for future
reference.
Ð
Verify stop clamp location (see Figure 3). A stop clamp is attached
to each probe as an indication of its insertion depth. It is important
that the stop clamp is securely in place to position the sensors in the
correct location and to ensure that the probes do not contact the
opposite pipe wall. Contact with the pipe wall could damage the
probe. The clamp’s location was determined based on your
submitted pipe diameter, as shown in SEC TION 6.2, and is marked
with a groove on each probe shaft. Refer to this mark if a stop clamp
is inadvertently moved. The two metal probe tips should be in the
middle of the pipe.