Operation
Page 8
HAUG
Static Meter
Ι
3.6
Battery control
The measuring unit has a permanent battery voltage control. If the battery
voltage is less than 7.5 volts then "Low Battery" appears in the first row of the
LCD and the 9 V battery has to be replaced or the accumulator has to be
charged with the supplied battery charger!
If the battery voltage will become less than 7.0 volts, then "auto off" will
appear for approximately 2 s in the second row and unit will switch off to
avoid a total discharge and acid leakage.
Note: Please use Alkaline or Lithium 9 V blockbatteries only or rechargeable
NiCd or NiMH accumulators!
If rechargeable batteries are preferred, please use a suitable battery-charger
for recharging separately the batteries. Please note the manufacturer's
advises !
3.7
Grounding
The unit has to be connected to ground for correct measurements of voltage
levels and polarity. Use the grounding socket (4) of the unit for the connection
to earth potential. The unit consists of a conductive housing, thus allow the
use without grounding cable if the operator is on earth potential (e.g. wears
conductive shoes, uses a wrist strap or touches grounded parts with one
hand).
3.8
Zero Adjustment
A zero adjustment is normally not necessary. In case, that the unit does not
indicate U = 000 V while the modulator system is shielded (e.g. grounded
person covers the modulator system with one hand), use the trimmer (6) for
zero adjustment. The last digit can be ignored as the caused measurement
failure is much lower than the specified tolerance.
