PST PST-UM-2010-EN-02, User Manual

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Minox i Oxygen Transmitter User Manual
ProcessSensing.com 11
4 Maintenance
4.1 General
To maintain performance, the sensor in Minox i will require replacement. Please check the Tech -
nical Specifications for frequency. During sensor replacement, it is recommended that light
cleaning of the external housing is carried out, as well as the checks outlined in this section.
Never use chemical cleaning agents or high pressure water or steam to clean the equip -
ment. Do not submerge in water.
4.2 Replace the sensor
The Minox i oxygen sensor is replaceable. When it reaches the end of serviceable life, calibra -
tion can no longer be performed and the sensor must be replaced.
A regular program of calibration will mitigate against sudden sensor failure. It is advisable to
establish a program of preventative maintenance to ensure process downtime is kept to a min -
imum or avoided.
To replace your sensor:
1. Unscrew the removable housing from the main housing of Minox i by turning it clockwise.
The sensor will be located in the removable housing, as shown.
2. Gently tip the sensor out of the removable housing into your hand or onto a soft surface.
Figure 10. Oxygen sensor placement in removable housing
3. Place your new EC or S-S oxygen sensor into the removable housing, ensuring the sensor’s
brass rings are facing out of the removable housing as shown in
Figure 10
.
4. Screw the removable housing back onto the main housing, by turning it counter-clockwise.
NOTE: The brass slip rings on the sensor must face into the main housing and out of the
removable housing as shown above.