YOKOGAWA CA71 HANDY CAL - Page 32

IM CA71-E
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Before Starting Source/Measurement
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App
3. Before Starting Source/Measurement
Pollution Degree
The pollution degree of the CA51 or CA71 in the operating
environment is 2.
Pollution Degree applies to the degree of adhesion of a solid, liquid,
or gas which deteriorates withstand voltage or surface resistivity.
Pollution Degree 2 applies to normal indoor atmospheres.
Normally, only non-conductive pollution is emitted.
However, a temporary electrical conduction may occur depending
on the concentration.