Ex Marking - Wika Rtd Zusatzinformation

1. Ex marking

Supplementary documentation:
▶ This additional information for hazardous areas applies in conjunction with the
operating instructions "Resistance thermometers (RTD) and thermocouples (TC)"
(article number 14150915).
EN
1. Ex marking
DANGER!
Danger to life due to loss of explosion protection
Non-observance of these instructions and their contents may result in the
loss of explosion protection.
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▶
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Check whether the classification is suitable for the application. Observe the relevant
national regulations.
II 3G Ex nA IIC T1 ... T6 Gc X
II 3D Ex tc IIIC T440 ...T80 °C Dc X
For applications without transmitters (digital displays) that require group II instruments
(potentially explosive gas atmospheres), the following temperature class classification and
ambient temperature ranges apply:
Table 1
Marking
II 3G Ex nA IIC T1, T2,
T3, T4, T5, T6 Gc X
4
Observe the safety instructions in this chapter and further explosion
instructions in these operating instructions.
Follow the requirements of the ATEX directive.
Observe the information given in the applicable type examination
certificate and the relevant regulations for installation and use in
hazardous areas (e.g. IEC 60079-15, IEC 60079-10 and IEC 60079-14).
Temperature
class
T1 ... T6
WIKA additional information RTD and TC, non-incendive equipment (Ex n)
Ambient Max. surface temperature
temperature (T
max
range (T ) thermowell tip
a
-20 ... +80 °C T (medium temperature) +
M
self-heating
For this, the special conditions
must be observed (see chapter
4 "Special conditions for use (X
conditions)").
) at the sensor or