Using The Earphone; Zeroing The Covermeter - Elcometer 331 SH Operating Instructions Manual

Concrete covermeter

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ETTING STARTED

3.10 Using the earphone

To use the earphone, plug the connector into the 3.5 mm socket marked

on the front of the

Covermeter. Replacement earphones are available as an optional accessory - see "Accessories"

on page 64.

This action is requested by the Covermeter whenever it is switched on with a search head attached,

when a cover batch is opened, on entering orthogonal SIZE mode, and periodically thereafter (at

least once every 10 minutes). The user can choose to zero the instrument at any time.

If zeroing is required, the cover display is blanked, the user is prompted, and no further readings

can be entered until zeroing is completed.

To zero the Covermeter, hold the search head in the air well away from any metal and press the

ZERO softkey. Zeroing is complete when the ZERO softkey indicator stops flashing. Sometimes

more than one press of the ZERO softkey will be required; this is quite normal.

When a half-cell probe is attached to the instrument, zeroing is not required.

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