- 66 -
INZ-TN2ZSVS-E
5.3.4 Replacing galvanic O
2
sensor (when provided with the sensor)
The service life of this sensor is about 18 months from the date of delivery.
We recommend periodic replacement of the sensor.
(1) Remove the screws (M4
×
7 pcs.) on the rear and
the side faces of the main unit.
(2) Pull out the cover toward the rear.
Replacement parts order No.: TK7M3502C1
(3) Remove the O
2
sensor connector.
(Control printed board CN9)
(4) You can see the O
2
sensor fastened to the mounting
rack at the left of the front face.
(5) Turn the O
2
sensor counterclockwise to remove it.
(6) Wrap seal tape around the screw of the replacement
sensor to assure air-tightness.
(7) Reverse the procedure from (1) to (5) to assemble
the sensor.
(8) Perform zero/span calibration.
Replacement has now been completed.
• Avoid having impact on the sensor.
Otherwise damage may result.
Caution on handling
(3)
Remove
Seal tape
Insert
(5)
(1)
(2)
