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It is recommended to perform standard maintenance on the sensor about once every six months,
though this will vary depending on the application. This involves sensor membrane replacement and
head cleaning as described in
Using the ORBISPHERE 32301 cleaning and regeneration center in addition to the standard
maintenance will allow for a noticeably extended sensor life.
5.1 Items necessary for sensor maintenance
The table that follows lists the items necessary for sensor maintenance.
Part No.
Description
2959
Electrolyte for oxygen sensors, 50-mL bottle
29781
Cathode polishing powder (part no.29331) and cloth (part no. 2934)
32301
Electrochemical cleaning and regeneration center
40089
Tweezers for maintenance kits
DG33303
Cleaning tool for sensor polishing for A110X and C1100 sensors only
DG33629
Cleaning tool for sensor polishing for GA2X00 sensors only
DG33619
Regeneration Cell for GA2X00/A1100 or C1100 sensors
DG33620
Orbisphere EC sensor support for cleaning
The ORBISPHERE 32301 is a satisfactory cleaning and regeneration tool for electrochemical
sensors. This tool reverses the electrochemical process that is taking place in the sensor cell during
usual operation. The reversal of the electrochemical process removes oxidation and at the same time
regenerates the surface of the electrodes. In addition, the regeneration center offers a continuity
tester to check the sensor electronics.
Note: When the sensor is used in a high level hydrogen sample, the electrochemical cleaning and regeneration
center 32301 is not necessary. For all other conditions, the electrochemical cleaning and regeneration center
32301 is necessary.
5.2 Membrane replacement and sensor head cleaning
A sensor recharge kit (see
components necessary for this membrane replacement and sensor head cleaning process (i.e. a
cartridge containing the electrolyte and pre-installed membrane, a sensor cleaning tool, replacement
®
O-rings and Dacron
Chemical exposure hazard. Obey laboratory safety procedures and wear all of the personal protective
equipment appropriate to the chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
Note: It is advisable to perform this procedure with the plastic sensor base installed so as to avoid any damage to
the connection socket and also to provide a suitable stand for the sensor when required.
Membrane replacement and sensor head cleaning
Table 1 Items necessary to do maintenance
Sensor recharge kit
mesh patches).
on page 5) is required as it contains all the
C A U T I O N
on page 9.
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