Endress+Hauser Oxymax COS22D, Руководство по эксплуатации

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Oxymax COS22D Maintenance
Hauser
27
7.4.1 Replacing the sealing ring
The sealing ring must be replaced if visibly damaged. For replacement, use only original sealing rings.
The following O-rings can be replaced:
• Sealing ring for shaft sleeve
• Sealing ring to process
If the sealing ring on the membrane body is damaged, you have to replace the entire membrane body.
7.4.2 Changing the electrolyte and/or the membrane body
The electrolyte is used up slowly during operation. This is caused by electrochemical substance
reactions. In de-energized state, no substance reactions take place, and the electrolyte is not used up.
The operating time of the electrolyte is shortened by diffusion of dissolved gases such as H
2
S, NH
3
or
high concentrations of CO
2
.
The theoretical operating time of an electrolyte filling for use in air-saturated potable water (pO
2
=210
mbar) at 25 ˚ C (77 ˚ F) is as follows:
• COS22D-*1 (standard sensor): >1.5 years
• COS22D-*3 (trace sensor): >3 months
CAUTION
!
The standard electrolyte is a strong irritant
Danger of severe skin and eye irritation
►
Be absolutely certain to observe the corresponding workplace safety regulations.
►
Wear protective clothing, gloves and goggles when handling the electrolyte.
►
In case of eye contact: Remove contact lenses, flush eyes with water for a few minutes and contact
a doctor.
►
In case of skin contact: Take off wet clothing immediately, wash the skin or take a shower.
a0011869
Fig. 11: Exploded view
1
2
3
4 Plug-in head
Pressure ring
Sensor shaft
O-ring 8.5 x 1.5 mm 5
6
7 Membrane body
Shaft cover
Glass body with cathode and anode 8
9 Process sealing 10.77 x 2.62 mm
Process connection Pg 13.5