Ecom Ex-DT 12 Operating Instructions Manual page 9

Before the batteries can be replaced, remove the
securing screw using a suitable screw driver. The
grip sleeve of the continuity tester can now be pulled
backwards and the batteries removed. Ensure correct
polarity when inserting new batteries.
The contacts of the new batteries and the holders
should be cleaned before fitting. Once the batteries
have been replaced, slide the grip sleeve back onto
the light sensor. Please ensure that the red connec-
ting cable does not become trapped inside the grip
sleeve (keep a firm hold of the cable when sliding in
the sleeve).
The grip sleeve can now be refastened with the secu-
ring screw.
Battery replacement
- Always replace all of the batteries together.
- Make sure that the polarity of the inserted
batteries is correct.
- Please ensure that all used batteries are
properly disposed of in an environmentally-
friendly manner.
7. 3 Continuity testing of idle objects
The Ex-DT can be used to test swiftly and safely
whether a device, a component, a cable or connec-
tion is conductive. This requires both test probes to
be connected to the appropriate ports on the speci-
men. If continuity is detected, the Ex-DT emits an
acoustic signal and the indicator lamp illuminates.
The pitch depends on the resistance of the specimen
and has a proportionally reverse pattern, i.e. the smal-
ler the resistance, the more the sound resembles that
of the short circuit (see Item 7.).
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