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Contents
7.2 Switching-on and measurement
11. Declaration of EG-Conformity
12. EG-Type approval
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1. Application
The Ex-Pt 720 is a precise, robust and simple to operate tempera-
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ture measuring device for temperature measurements in explo-
sion-endangered areas (excluding firedamp-endangered under-
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ground mining) of Zones 2 and 1 according to IEC/CENELEC.
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2. Safety references
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This operating manual contains information and safety recommen-
dations which must be complied with in order to guarantee safe
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functioning of the unit under the conditions described
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Please read these operating instructions very carefully before
using the unit !
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In case of doubt (for example due to mistakes in the translation)
the German operating instructions are assumed to be valid.
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3. Malfunctioning and inadmissible operation
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As soon as one suspects that the safety of the equipment is end-
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angered, it must be taken out of service and immediately removed
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from the Ex-area. Precautions must be taken to prevent its unin-
tentional reuse.
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We recommend that the unit be returned to the manufacturer for
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checking.
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For example, the safety of the unit could be endangered when:
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- damage to the housing is visible.
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- the unit was subjected to improper strain.
- the unit was incorrectly stored.
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- the unit was damaged in transit.
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- the lettering on the unit is unreadable.
- malfunctioning occurs.
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