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3.11 Zeroing the Covermeter
This action is requested by the Covermeter whenever it is switched on with a search head attached,
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
h
is attached to the instrument, zeroing is not required.
4 THE MENUS
To access the menus press the MENU softkey. To return to the reading screen quickly, press and
hold the MENU softkey.
4.1 MENU
BACKLIGHT . . . . . . . . . . . . . . Toggles the display backlight on or off
INSTRUMENT MODE
i
. . . . . . Opens Instrument mode menu . . . . See 4.2 INSTRUMENT MODE
SETUP . . . . . . . . . . . . . . . . . . Opens Setup menu . . . . . . . . . . . . . See 4.3 SETUP
ABOUT . . . . . . . . . . . . . . . . . . Opens About menu . . . . . . . . . . . . . See 4.4 ABOUT
RESET . . . . . . . . . . . . . . . . . . Opens Reset menu . . . . . . . . . . . . . See 4.5 RESET
Note:
When Backlight is on, the display is illuminated for approximately 30 seconds after any key
is pressed and during measurements.
h.
Half-cell probes cannot be fitted to the Elcometer 331 Model B.
i.
‘Instrument mode’ is not included on Elcometer Model B.
331.book Page 12 Thursday, March 12, 2009 9:51 PM