7
Ensure that the specific area or object to be measured is
larger than the laser spot size of the device. The smaller
the object the closer the equipment must be. For opti-
mum measuring accuracy the area/object should be at
least twice that of the spot size.
8.4 Operation of the laser sight
The laser sight is a component of the Ex-MP4 a.
Please read through the following section carefully:
Warning!
Do not stare directly at the laser!
Risk of eye damage!
Operate the unit carefully!
Do not aim the unit at other people!
The laser sight enables the unit to be aimed accurately and is useful for sighting small or distant objects.
However it does not indicate the size of the spot. This value is distance-dependent and can be inferred from
the optical diagram in this manual.
The units are equipped with a robust solid state laser which is housed inside the unit itself.
8.5 Operating the unit
°C deg / °F deg Change-over
In order to switch between centigrade and
fahrenheit, the battery compartment has to be opened – having
first taken off the leather case.
It is then possible to select the temperature
indicator required by sliding Switch A from either degree °C or
degree °F.
After selecting the temperature indicator required the leather
case must again be fitted before operation of the equipment in the
hazardous area.
The LCD indicator shows the temperature in degrees °C or
degrees °F. After release of the trigger the temperature measu-
rement is displayed for a further 7 seconds and at the same time
the word „Hold” is displayed. The battery condition indicator sym-
bol shows the state of the battery.
(A)
