Michell Instruments XZR250, Руководство пользователя, Страница: 39 / 54

XZR250 User’s Manual
Michell Instruments 31
REPLACING PARTS
9.1 Removing the Sensor head from the Probe
Refer to Figure 13; component numbers given in parenthesis.
1. Shut-down and isolate the power supply and allow the probe to cool down.
!
WARNING: Ensure the probe has cooled down completely before
trying to remove the sensor head. The zirconia sensing module
(6) has a PTFE seal which may be damaged if
you try to force the sensor head.
2. If required, remove the front panel and disconnect the wiring: refer to section 2.2
Electrical Connections. Tie back the cable securely and re-fit the front panel to
prevent ingress of contaminants.
3. Loosen clamp (2) and carefully withdraw sensor head (1) from the probe body (4).
!
WARNING: The sensor head (1) is a tight fit to the probe body
(4): adjust your stance to ensure you are safe and stable before
trying to remove the housing.
NOTE:
Carefully rotate sensor head (1) to assist with removal.
!
CAUTION: Keep the housing level to avoid accidental damage of
the sensing module (6).
9.2 Replacing the Sensor head onto the Probe
Refer to Figure 13; component numbers given in parenthesis.
1. Ensuring the clamp (2) is fitted over the sensor head (1) shoulder and with the
flow arrow on the flange pointing upwards, carefully slide the probe body (4) into
the sensor head (1).
!
CAUTION: Keep the housing level to avoid accidental damage of
sensing module (6).
2. Ensure the probe body (4) is inserted fully (housing shoulder aligns with the
indicator line on the probe).