Replacing The Sensor Assembly - Hach 5740sc User Manual

Galvanic membrane dissolved oxygen sensor
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Maintenance

6.4 Replacing the Sensor Assembly

Figure 13
Replacing the Sensor Assembly
1
1.
Probe Body
2.
Item 3 seats in groove.
3.
O-ring, (Cat. No. 1857100)
36
The sensor assembly consists of a pre-installed membrane, electrolyte, and electrode.
1. Unscrew the sensor guard or optional lock ring and remove the spent or damaged
sensor assembly.
2. Install the o-ring onto the groove in the probe body, see item 2 and 3 in
Figure
13.
3. Align the sensor assembly connector with the probe body socket, see item 6 in
Figure
13.
4. Reinstall the sensor guard or lock ring.
5. Condition the new sensor before taking measurements. See
2
4.
5.
6.
3
4
6
Sensor Assembly
Sensor Guard (if sensor guard is not used, install the optional
lock ring)
Check for connector orientation during assembly.
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section 5.2 on page
23.
5

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