7WIKA operating instructions process transmitter, model UPT-2x
EN
14381795.02 04/2020 EN/DE/FR/ES
4. Special conditions for safe use (X-conditions)
For the case “mounting to zone 0 (EPL Ga/Gb)”
The instrument’s internal separation (diaphragm) from the wetted area has a wall thick-
ness of < 0.2 mm in order to ensure proper functioning. In operation, it must be ensured
that any impairment of the separation, e.g. by aggressive media or through mechanical
damage, is eliminated.
5. Dismounting
Observe the information given in the type examination certicate and the country-specic
regulations for installation and use in hazardous areas (e.g. IEC 60079-14, NEC, CEC)
. If
this is not observed, serious injuries and damage could occur.
6. Specications
Permissible temperature ranges
Temperature classes/surface temperatures for all variants except for
UPT-2*-*I*-**-**-*****-*4****-** (model without cooling element):
Temperature class/surface temperature Ambient and medium temperature (°C)
T5, T6 -40 ≤ Ta ≤ +60
T4 -40 ≤ Ta ≤ +80
T135 °C
-40 ≤ Ta ≤ +40 for Pi = 750 mW
-40 ≤ Ta ≤ +70 for Pi = 650 mW
-40 ≤ Ta ≤ +80 for Pi = 550 mW
Temperature classes/surface temperatures only for variant
UPT-2*-*I*-**-**-*****-*4****-** (model with cooling element):
Temperature class Max. medium temperature (°C)
Ambient temperature (°C)
T4 120 -40 ≤ Ta ≤ +50
T3 150 -40 ≤ Ta ≤ +40
Restrictions to temperature ranges
Medium temperature
Gas hazardous application Temperature class (maximum ambient
temperature)
Dust hazardous application maximum output values of the current supply
(EN/IEC 60079-11, section 5.6.5).
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