Locate - Elcometer 331 SH Operating Instructions Manual

S /D
OUND MODE ETECTION MODE
Your Covermeter has three sound/detection modes; Locate, Maxpip™ and Under Cover.
MENU / SETUP / SOUND MODE

11.1 Locate

In this mode, the pitch of the sound from the Covermeter increases as the search head gets closer
to a bar.
Sound volume can be adjusted -
The apparent volume of the sound can also be adjusted by changing the sensitivity setting.
Adjusting sensitivity
The sensitivity setting is indicated by the variable wedge-shaped symbol on
the display. To increase the sensitivity, press [ ]. To decrease the
sensitivity, press [ ].
Typically, set the sensitivity to produce a slow 'clicking' sound in the absence
of metal. With the sensitivity set at this level you will be able to differentiate quickly between bars of
the same size located at different depths.
If the sensitivity is optimised, the pitch of the sound will consistently give a good guide to the extent
of cover; shallower-than-average bars will produce a clearly noticeable, more intense sound, which
will draw your attention to such bars. However, if the sensitivity has been adjusted to an arbitrary
level, the necessary degree of consistency may not be achieved.
To improve audible resolution when locating closely spaced reinforcement bars it may be beneficial
to reduce the sensitivity below the optimum level described in the previous paragraphs.
It is also possible to reduce sensitivity deliberately so that bars of adequate cover are not indicated,
but bars of shallower cover are. You may find this technique to be a simpler and quicker method
(albeit somewhat less precise) than the Under Cover mode described later; but please note that
both methods share the same disadvantage that they only indicate bars with shallow cover, but do
not confirm the presence of bars with adequate or deeper cover.
During a search the sound from the speaker and the brightness of the LED may reach their
maximum level before the signal has reached its maximum. If this occurs, reduce the sensitivity until
the sound and LED are again responding readily to changes.
Note: Reducing the sensitivity does not reduce the overall sensitivity of the instrument, but will
reduce the sound and LED indications to zero when the search head is removed from the region of
high signal strength. This may cause deeply covered bars to be missed.
If the sensitivity is reduced to the minimum setting, the locate sound is muted
(indicated by a crossed-out loudspeaker symbol on the screen).
The sensitivity setting only affects the locate sound and the brightness of the
LED on the search head; it does not affect the cover measurement or the
size measurement.
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R
SOUND MODE
LOCATE
MAXPIP
UNDER COVER
MENU / SETUP / BEEP VOLUME