2322
7.2.5 Switching-off
Switch the unit of with the >I/O pushbutton< . The display is no lon-
ger active.
7.3 Battery change
Should the <BAT> symbol be displayed constantly, then the bat-
tery will need to be changed within the next 1-2 hours. The unit
switches itself automatically off should the battery voltage be too
low.
Open the back of the unit by unscrewing it, remove the exhausted
battery and insert a new one (observe polarity).
- while changing the battery, the cover may not be separated from
t˝the unit top shell.
- only batteries of Type 6LR61 as per IEC may be used. The use of
aalternative types of batteries is strictly forbidden.
- batteries may only be changed outside the Ex-area.
- the taking of additional batteries into the Ex-area is not allowed.
7.4 Temperature probes
7.4.1 Standard probes
Immersion / insertion probe
0628 1232: measurement range:-50 ... 400°C
accuracy: class A
Ex-Zones: 2, 1
probe dimensions: 110mm x 4mm (w x ø)
sensor dimensions: 30mm x 3,2mm (w x ø)
response time (99%): 12 Sec.
7.1 Commissioning
- carefully read operating instructions.
- open back of unit with key.
- insert battery correctly (observe polarity).
- insert battery safety cover.
- close unit with safety screw.
7.2 Switching-on and measuring
7.2.1 Switching-on
Insert sensor into measuring socket (take note of plug coding).
Switch unit on with >I/O pushbutton<.
After switching on, a short display and function test will take place.
The measuring instrument is now ready for use.
7.2.2 Hold-Function
The measured values can be retained in the display with the
>Hold< pushbutton
7.2.3 Auto-Off-Function
The Auto-Off-Function switches the unit off after 10 minutes opera-
ting time thus avoiding unintentional discharge of the battery.
7.2.4 Changing measuring range
The display can be switched between °C and °F.
While switching the unit on with the >I/O pushbutton< press
>HOLD-pushbutton< and hold it.
After the self test is finished, the currently selected max. measuring
value will blink.
Pressing the >Hold-pushbutton< switches between °C and °F.
Should no pushbutton be pressed for 5 seconds after a changeo-
ver, then the new measuring value will be accepted.
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