3 electrical connections – Intek RheoVac 950A User Manual

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3. Check serial number (S/N). If more than one RheoVac system 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 number and installation location for future reference.

4. Verify stop clamp location (see Figure 4). 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 is determined
based on your submitted pipe diameter, as shown in SECTION
6.2, and is marked with a groove on each probe shaft. Refer to
this mark if a stop clamp is inadvertently moved. When
installed in the line, the two metal probe tips should be in the
middle of the pipe.

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5. Prior to inserting probe, loosen the compression nut on the

thermocouple connector of the hot tap and clean the inner surface
of the thermocouple connector to ensure it is free of particles that
may cause probe damage.

6. Be sure to power up your RheoVac instrument system and

probe(s) for at least 30 minutes before inserting probes into the
vent line hot taps. DO NOT leave probe in vent line without
power or when flooding the condenser.

7. Install each probe. The probe should be mounted through the

pipe wall using the hot tap assembly. The probe installs so that
the two sensor tips are side-by-side across the gas stream. Each
probe has a flow directional arrow on the junction box. Make sure the probe
orientation is correct. When installing under vacuum, do not allow the clamp to
“slam” against the seal nut upon opening the valve. Grasp the probe firmly, with
hand against the seal nut, before opening the ball valve. Allow the probe shaft to
slide slowly through the valve by controlling the amount of grip on the probe shaft.
Special installation instructions, if any, will be noted in SECTION 6.







Figure 4 Probe

Stop Clamp

8. When removing the probe from the vent line, loosen the compression on the

thermocouple connector of the hot tap and slowly pull the probe out of the line until
the extraction line is visible (see Figure 4). Close the ball valve and remove the
probe from the hot tap.


IMPORTANT — Inspect and VERIFY these electrical connections carefully. Improper
connection could damage electronic components and sensor function. If additional holes need to
be drilled in the processor enclosure, remove the electronics subassembly (mounted on a mounting
plate) and temporarily store inside an ESD bag in a safe, clean place. Do not drill with electronics
boards inside the enclosure.