Ecom Instruments Ex-Pt 720 Manuel D’Utilisation

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1. Application

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2. Safety references

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3. Malfunctioning and inadmissible operation

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4. Safety regulations

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4.1 Special conditions for use in Zone 0

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5. Ex-Data

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6. Technical Details

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7. Operating instructions

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7.1 Commisioning

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7.2 Switching-on and measurement

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7.2.1 Switching-on

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7.2.2 HOLD-Function

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7.2.3 Auto-Off-Function

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7.2.4 Changing measuring range

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7.2.5 Switching-off

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7.3 Battery change

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7.4 Temperature probe

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7.4.1 Standard probe

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7.4.2 Special probe

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7.4.3 Calibration instructions

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8. Repair

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9. Cleaning and maintenance

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10. Guarantee & liability

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11. Declaration of EG-Conformity

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12. EG-Type approval

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The Ex-Pt 720 is a precise, robust and simple to operate tempera-
ture measuring device for temperature measurements in explo-
sion-endangered areas (excluding firedamp-endangered under-
ground mining) of Zones 2 and 1 according to  IEC/CENELEC.

This operating manual contains information and safety recommen-
dations which must be complied with in order to guarantee safe
functioning of the unit under the conditions described

Please read these operating instructions very carefully before
using the unit !

In case of doubt (for example due to mistakes in the translation)
the German operating instructions are assumed to be valid.

As soon as one suspects that the safety of the equipment is end-
angered, it must be taken out of service and immediately removed
from the Ex-area. Precautions must be taken to prevent its unin-
tentional reuse.
We recommend that the unit be returned to the manufacturer for
checking.

For example, the safety of the unit could be endangered when:
- damage to the housing is visible.
- the unit was subjected to improper strain.
- the unit was incorrectly stored.
- the unit was damaged in transit.
- the lettering on the unit is unreadable.
- malfunctioning occurs.