Hioki 3640-20, Instruction Manual

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Notes on Use
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CAUTION
Do not store or use the product where it could be exposed
to high temperature or humidity, or condensation. Under
such conditions, the product may be damaged and
insulation may deteriorate so that it no longer meets
specifications.
NOTE
Attach the supplied light sensor cap to the detector and then
perform zero ajustment before measurement.
Do not store or use the tester where it will be exposed to direct
sunlight, high temperature, high humidity, or condensation. If
exposed to such conditions, the tester may be damaged, the
insulation may deteriorate, and the tester may no longer satisfy
its specifications.
The reference level as marked on the faceplate is the tip of the
light sensor.
Notes on Use
In order to ensure safe operation and to obtain maximum
performance from the unit, observe the cautions listed
below.