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WIKA operating instructions pressure transmitter, model IS-3
14243628.02 10/2018 EN/DE
EN
6. Commissioning, operation
WARNING!
Danger to life through improper mounting
Improper installation can lead to the loss of the explosion protection and to life-threatening situations.
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Adhere to the permissible ambient and medium temperatures which are valid for this area on the
basis of the specified temperature classes.
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Consider possible additional restrictions on the ambient temperature range by the mating connector
used.
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Guard the pressure transmitter against being touched, or display a warning about risk of burns.
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Mount the pressure transmitter horizontally in order to ensure unhindered airflow around the cooling
element.
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Protect the pressure transmitter from heat sources (e.g. pipes or tanks).
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In dust-Ex areas, ensure that the cooling element is not dirty and there is no dust lying in it, otherwise
the cooling action cannot be guaranteed.
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Observe the specifications for the use of the pressure transmitter in combination with aggressive/
corrosive media and for avoiding mechanical hazards.
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For ATEX/IECEx ignition protection types Ex nA and Ex tc: During installation the cable output IP67
version with protection cap must be protected from the influence of light.
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For ATE ignition type Ex tc: Not suitable for areas where intensive electrostatic charges are to be
expected.
If the medium temperature to be measured is >105 °C [221 °F], then, for the maximum ambient temperature, the tables
in chapter 3.8 “Maximum ambient and medium temperatures safe operation, for process connections with pressure
ports and medium temperatures >105 °C [221 °F] (for ATEX/IECEx ignition protection type Ex i, CSA and FM)” and
“Maximum ambient and medium temperatures for safe operation, for flush process connections and medium tempera
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tures > 105 °C [221 °F] (for ATEX/IECEx ignition protection type Ex i, CSA and FM)”.
However, the permissible surface temperatures that apply for this area based on the specified temperature classes
must not be exceeded. The temperature at the hexagon on the case should never exceed the maximum value of the
temperature range in the table “Ambient and medium temperatures of the respective electrical connections for safe
operation, for medium temperatures ≤ 105 °C [221 °F] (for ATEX/IECEx ignition protection type Ex i, CSA and FM)“.
With pressure transmitters with flush process connections and cooling elements, the temperature at the case above
the cooling fins must not be greater than the table value.