Oxygen analyser (ppb) - 9182 -
7-8
f) Lack of humidity because of an excessive temperature
!
Use a calibration cap (see spare parts list)
g) There is humidity or water in the probe connector
!
You notice a high unstability. Dry the connector and check it is correctly screwed.
h) The golden cathod surface is damaged (scratch or holes due to important shocks)
!
Do not polish the surface. Change the electrode.
i) Mud or particles on the golden cathod
!
Clean the cathod with an absorbant soft tissue and rinse the membrane.
j) The electrolyse potential does not equal - 0.85 V
!
Enter the correct value
k) Cable or connections damaged when the probe has been replaced
!
Check the connexion to the transmitter. If the connexion is correct check the
connections of the probe connector.
l) The probe is incorrectly positioned (see § 7.1.4 page 7-3 - note 1). The electrolyte leaks and air
bubbles input the cathod
!
Put the probe in the correct position, head down.
Problem: No significant current increase when the probe is in the air for the calibration
Causes and solutions:
a) There is an important pollution of the electrolyte due to an incorrect adjustment of the filling
screw
!
Change the electrolyte. Check there is a gasket and the screwing. Check the
Teflon band is correctly positioned or that the probe is not damaged.
b) The membrane holder is incorrectly screwed. Risk of electrolyte pollution
!
Change the electrolyte and tighten correctly the membrane holder.
c) The membrane has been torn
!
Change the membrane.
d) The electrode is not correctly mounted in the probe body: there is an important looseness
between the membrane and the golden cathode
!
Tighten the electrode screw (rep 3 page 7-1).
Содержание POLYMETRON 9182
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