EN
14073045.06 10/2020 EN/DE/FR/ES
WIKA operating instructions model TR25 (Ex i)
4
Declarations of conformity can be found online at www.wika.com.
Contents
6.4 Mounting examples in hazardous areas . . . . . . . . . . . . . 23
6.4.1 Possible installation methods with the marking II 1G Ex ia IIC T6 Ga or
II 1D Ex ia IIIC T65 °C Da . . . . . . . . . . . . . . . . 23
6.4.2 Possible installation methods with the marking II 1/2 Ex ib IIC T6 Ga/Gb or
II 1/2 D Ex ib IIIC T65 °C Da/Db . . . . . . . . . . . . . . 24
7. Additional notes for instruments with EHEDG and 3-A
7.1 Compliance with 3-A conformity . . . . . . . . . . . . . . . . 25
7.2 Compliance with EHEDG conformity . . . . . . . . . . . . . . 25
7.3 Mounting instructions . . . . . . . . . . . . . . . . . . . 25
7.4 Cleaning in place (CIP) cleaning process . . . . . . . . . . . . . 25
8. Calculation examples for self-heating of the pipe body at the sensor
9. Faults 27
10. Maintenance, cleaning and recalibration
10.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . 29
10.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . 29
10.3 Calibration, recalibration . . . . . . . . . . . . . . . . . . 29
11. Dismounting, return and disposal
11.1 Dismounting . . . . . . . . . . . . . . . . . . . . . . 30
11.2 Return . . . . . . . . . . . . . . . . . . . . . . . . 30
11.3 Disposal . . . . . . . . . . . . . . . . . . . . . . . 30
Summary of Contents for TR25 (Ex i)
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