SAFETY INSTRUCTIONS
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Manual EC 24 · EN05 · 2015-02
5
Safety Instructions
The EC 21 and the EC 24 comply with currently applicable standards and regulations. However,
failure to operate them properly may cause hazards.
Persons who install or operate a volume corrector in areas subject to explosion hazards, must be
familiar with the currently applicable explosion protection standards and regulations.
Do not change anything of the volume corrector on your own, otherwise the approval will become
invalid.
Operate the volume corrector only in the specified temperature range from -20°C to +60°C.
The electronic corrector system of the explosion-protected design has been approved for use in
areas subject to explosion hazards and its code is:
II 2 G Ex ib[ib] IIC T3/T4
You can find the EC type approval certificate in the annex and its reference number is:
TÜV 02 ATEX 1970
Please observe the following signs:
Danger of explosion
In the manual, this symbol warns you of an explosion hazard. Please observe the
instructions given next to this symbol. As to the danger of explosion, please note the
following in particular:
Only the explosion-protected design of the EC 21 / EC 24 may be used in areas
subject to explosion hazards. Connect the pulse outputs of these devices only to
intrinsically safe circuits.
The battery must be changed in an area without explosion hazards.
The specifications on cable type and cable length in this manual and in the ex-
approval must be observed.
Modifications to the device make the Ex approval invalid and are therefore prohibited.
Damage to property
In the manual, this symbol warns you of possible damage to property. The instructions
given next to this symbol inform you about what you can do to avoid damage to the
EC 21 / EC 24 volume corrector.
It is essential to observe the warning information in these operating instructions and the generally
applicable safety rules.
No warranty claims can be asserted if there is unauthorized interference with the device!
