DSH 724 Measurement of Conductivity

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DSH 724

Measurement of Conductivity - E6 H, }- o5 K- U$ \

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60112(ed.4)

" B, o6 r( ?* s$ G+ e" iQuestion:
# T- Q0 O+ ?' x% MClause 7.3 requires that the conductivity of the tracking test solution “be measured with alternating voltage at a frequency in the range 1 kHz to 2 kHz. The procedure is described in IEC 60589”. The procedure in IEC 60589 utilises conical flasks with reflux condensors, platinised platinum electrodes, a conductivity cell and a resistance bridge. This appears to be a chemical standard rather than an appropriate electrical test laboratory measurement technique.
Are CBTL:
+ ^' U; @/ l' F. [+ p- (a) expected to use this method of measurement for solution conductivity; or
- (b) can a suitable conductivity meter with a measurement frequency in the range 1 kHz to 2 kHz be used; or
( C; Q2 G5 _7 z; i- l- (c) can any suitable conductivity meter (different measurement range) be used.
Decision:
9 A1 F) B+ [8 q4 L" j' v' R& bThe Group decided that the “use of any appropriate conductivity meter with sufficient accuracy and uncertainty including the probe” is the only practical one - item (c) above.

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