WIKA TR21-A User manual

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DE
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Additional information
Zusatzinformation
Informations complémentaires
Información adicional
Model TR21-A Model TR21-B Model TR21-C
Additional information for hazardous areas (Ex i)
Model TR21
Zusatzinformation für explosionsgefährdete Bereiche (Ex i)
Typ TR21
Informations complémentaires concernant les zones dangereuses
(Ex i), type TR21
Información adicional para zonas potencialmente explosivas (Ex i)
Modelo TR21
70018194BVS 14 ATEX E 147 X
IECEx BVS 14.0101X

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WIKA additional information model TR21 (Ex i)
Additional information model TR21 (Ex i) Page
3 - 20
Zusatzinformation Typ TR21 (Ex i) Seite
21 - 38
Informations complémentaires type TR21 (Ex i) Page
39 - 56
Información adicional modelo TR21 (Ex i) Página
57 - 73
© 09/2016 WIKA Alexander Wiegand SE & Co. KG
All rights reserved. / Alle Rechte vorbehalten.
WIKA®is a registered trademark in various countries.
WIKA®ist eine geschützte Marke in verschiedenen Ländern.
Prior to starting any work, read the operating instructions and additional information!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung und Zusatzinformation lesen!
Zum späteren Gebrauch aufbewahren!
Lire le mode d‘emploi et informations supplémentaires avant de commencer toute opération !
A conserver pour une utilisation ultérieure !
¡Leer el manual de instrucciones y información adicional antes de comenzar cualquier trabajo!
¡Guardar el manual para una eventual consulta!

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WIKA additional information model TR21 (Ex i) 3
Contents
Declarations of conformity can be found online at www.wika.com.
Contents
1. Ex marking 4
2. Safety 7
3. Commissioning, operation 9
4. Special conditions for safe use (X conditions) 14
5. Calculation examples for self-heating at the thermowell tip 15
6. Accessories 15
Appendix 1: CSA control drawing 16
Appendix 2: EU declaration of conformity 18
Appendix 3: EPL Matrix 19

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WIKA additional information model TR21 (Ex i)4
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.
▶
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 60079-11, IEC 60079-10 and IEC 60079-14).
Check whether the classification is suitable for the application. Observe the relevant
national regulations.
ATEX
IECEx
II 1G Ex ia IIC T1 ...T6 Ga
II 1/2G Ex ia IIC T1 ...T6 Ga/Gb
II 2G Ex ia IIC T1 ...T6 Gb
II 1D Ex ia IIIC T135 °C Da
II 1/2D Ex ia IIIC T135 °C Da/Db
II 2D Ex ia IIIC T135 °C Db
Supplementary documentation:
▶
This additional information for hazardous areas applies in conjunction with the operating
instructions “Miniature resistance thermometers for sanitary applications, model TR21”
(article number 14006814).
1. Ex marking

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WIKA additional information model TR21 (Ex i) 5
For applications without transmitters (models TR21-x-xPx and TR21-x-xRx) that require
group II instruments (potentially explosive gas atmospheres), the following temperature
class classification and ambient temperature ranges apply:
Table 1
Marking Temperature
class
Ambient
temperature
range (Ta)
Max. surface temperature
(Tmax) at the sensor or
thermowell tip
ATEX IECEx
II 1G Ex ia IIC T1 ... T6 Ga
II 1/2G Ex ia IIC T1 ... T6 Ga/Gb
II 2G Ex ia IIC T1 ... T6 Gb
T1 ...T5 -50 ... +85 °C TM(medium temperature) +
self-heating
For this, the special conditions
must be observed (see chapter
4 “Special conditions for safe
use (X conditions)”).
T6 -50 ... +80 °C
For applications requiring instruments of equipment group II (potentially explosive dust
atmospheres), the following surface temperatures and ambient temperature ranges apply:
Table 2
Marking Power PiAmbient
temperature
range (Ta)
Max. surface temperature
(Tmax) at the sensor or
thermowell tip
ATEX IECEx
II 1D Ex ia IIIC T135 °C Da
II 1/2D Ex ia IIIC T135 °C Da/Db
II 2D Ex ia IIIC T135 °C Db
750 mW -50 ... +40 °C TM(medium temperature) +
self-heating
For this, the special conditions
must be observed (see chapter
4 “Special conditions for safe
use (X conditions)”).
650 mW -50 ... +70 °C
550 mW -50 ... +85 °C
1. Ex marking