Explanation Of Symbols; Intended Use - WIKA TC84 Manual De Instrucciones

1. Ex marking / 2. Safety
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:
Marking
II 3G Ex ec IIC T1, T2, T3, T4, T5, T6 Gc X
II 3G Ex nA IIC T1, T2, T3, T4, T5, T6 Gc X
Ex ec IIC T1, T2, T3, T4, T5, T6 Gc
Ex nA IIC T1, T2, T3, T4, T5, T6 Gc
II 3G Ex ec IIC T1, T2, T3 Gc X
II 3G Ex nA IIC T1, T2, T3 Gc X
Ex ec IIC T1, T2, T3 Gc
Ex nA IIC T1, T2, T3 Gc
2. Safety

2.1 Explanation of symbols

DANGER!
... indicates a potentially dangerous situation in the hazardous area that can
result in serious injury or death, if not avoided.

2.2 Intended use

The thermometers described here are suitable for temperature measurement in zone 2
hazardous areas.
The non-observance of the instructions for use in hazardous areas can lead to the loss
of the explosion protection. Adhere to the following limit values and instructions (see data
sheet).
2.3 Responsibility of the operator
The responsibility for classification of zones lies with the plant operator and not the
manufacturer/supplier of the equipment.
2.4 Personnel qualification
The skilled electrical personnel must have knowledge of ignition protection types,
regulations and provisions for equipment in hazardous areas.
WIKA additional information TC84 (Ex n, Ex e)
Temperature Ambient temperature
class range (T
T1 ... T6 -40 ... +80 °C
T1 ... T3 -40 ... +200 °C
EN
)
a
5