WIKA TR12 Series Operating instructions

EN
DE
FR
ES
Additional operating instructions
Zusatz-Betriebsanleitung
Mode d’emploi complémentaire
Manual de instrucciones adicional
Additional operating instructions for hazardous areas (Ex d, Ex t)
Models TR12 and TC12
Zusatz-Betriebsaneleitung für explosionsgefährdete Bereiche
(Ex d, Ex t), Typen TR12 und TC12
Mode d’emploi complémentaire pour zones
explosives (Ex d, Ex t), types TR12 et TC12
Manual de instrucciones adicional para zonas potencialmente
explosivas (Ex d, Ex t), Modelos TR12 y TC12
Models TR12-B-xDxx, TC12-B-xDxx Models TR12-M-xDxx, TC12-M-xDxx
BVS 07 ATEX E 071 X
IECEx BVS 11.0042X

EN
DE
FR
ES
14280101.02 08/2023 EN/DE/FR/ES
2WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
Additional operating instructions
models TR12, TC12 (Ex d, Ex t)
Page
3 - 37
Zusatz-Betriebsanleitung Typen
TR12, TC12 (Ex d, Ex t)
Seite
38 - 54
Mode d’emploi complémentaire types
TR12, TC12 (Ex d, Ex t)
Page
55 - 82
Manual de instrucciones adicional
modelos TR12, TC12 (Ex d, Ex t)
Página
83 - 106
© 03/2019 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!
Keep for later use!
Vor Beginn aller Arbeiten Betriebsanleitung lesen!
Zum späteren Gebrauch aufbewahren!
Lire le mode d‘emploi avant de commencer toute opération !
A conserver pour une utilisation ultérieure !
¡Leer el manual de instrucciones antes de comenzar cualquier trabajo!
¡Guardar el manual para una eventual consulta!

EN
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3WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
Contents
Contents
1. Ex marking 4
2. Safety 9
3. Commissioning, operation 15
4. Special conditions of use (X conditions) 24
5. Calculation examples for self-heating at the thermowell tip 25
Annex 1: EU declaration of conformity 27
Annex 2: WIKA ATEX and IECEx case and instrument list 28

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4WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
EN
1. Ex marking
DANGER!
Danger to life from explosion
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 hazar-
dous areas (e.g. EN IEC 60079-0, IEC 60079-1, IEC 60079-10 and
IEC 60079-14).
Check whether the classification is suitable for the application. Observe the relevant
national regulations.
1. Ex marking
Supplementary documentation:
▶
This additional information for hazardous areas applies in conjunction with the
operating instructions “Resistance thermometer TR12 and thermocouple TC12”
(article number 14064370).

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5WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
1. Ex marking
Series T*12-B-*DB or T*12-B-*DC (flameproof enclosure)
Variant 1: empty enclosure
Electri-
cal data
Marking Thermowell Temperatures
Temperature
class
Ambient
1)
U
max
= 30 V
II 2G Ex db IIC T*
2) 3)
Gb No T1 ...T5 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 1/2G Ex db IIC T*
2) 3)
Ga/Gb
Yes T1 ...T5 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 2G Ex db IIC T6
3)
Gb No T6 -40 ... +80 °C
[-40 ... +176 °F]
-60 ... +80 °C
[-76 ... +176 °F]
II 1/2G Ex db IIC T6
3)
Ga/Gb
Yes T6 -40 ... +80 °C
[-40 ... +176 °F]
-60 ... +80 °C
[-76 ... +176 °F]
1) The low ambient temperature of -40 °C [-40 °F] applies to models with Rosemount or Limatherm enclosures.The
low ambient temperature of either -40 °C [-40 °F] or -60 °C [-76 °F] applies to models with WIKA enclosures series
1/4000, 5/6000, 7/8000. For explanation of symbols for the low temperature range, see page 14.
2) The temperature class depends on the ambient temperature.
3) The maximum surface temperature (T
max
) at the tip of the probe or thermowell = T
p
(process temperature) +
self-heating. Refer to manual for calculation method.

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6WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
EN
Variant 2: empty enclosure + electronics
Electri-
cal data
Marking Thermowell Temperatures
Temperature
class
Ambient 1)
Umax = 30 V
Pmax = 2 W
II 2G Ex db IIC T* 2) 3) Gb No T1 ...T4 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 1/2G Ex db IIC T* 2) 3)
Ga/Gb
Yes T1 ... T4 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 2G Ex db IIC T5 3) Gb No T5 -40 ... +70 °C
[-40 ... +158 °F]
-60 ... +70 °C
[-76 ... +158 °F]
II 1/2G Ex db IIC T5 3) Ga/Gb Ye s T5 -40 ... +70 °C
[-40 ... +158 °F]
-60 ... +70 °C
[-76 ... +158 °F]
II 2G Ex db IIC T6 3) Gb No T6 -40 ... +55 °C
[-40 ... +131 °F]
-60 ... +55 °C
[-76 ... +131 °F]
II 1/2G Ex db IIC T6 3) Ga/Gb yes T6 -40 ... +55 °C
[-40 ... +131 °F]
-60 ... +55 °C
[-76 ... +131 °F]
1) The low ambient temperature of -40 °C [-40 °F] applies to models with Rosemount or Limatherm enclosures.The
low ambient temperature of either -40 °C [-40 °F] or -60 °C [-76 °F] applies to models with WIKA enclosures series
1/4000, 5/6000, 7/8000. For explanation of symbols for the low temperature range, see page 14.
2) The temperature class depends on the ambient temperature.
3) The maximum surface temperature (Tmax) at the tip of the probe or thermowell = Tp(process temperature) +
self-heating. Refer to manual for calculation method.
Variant 3: certified equipment (field transmitter)
Electri-
cal data
Marking Temperatures
Temperature class Ambient
See trans-
mitter 1)
II 2G Ex db IIC T* Gb 2) See transmitter 1) See transmitter 1)
1) The parameters for certified equipment (field transmitter) must be taken from the relevant manual.
2) The maximum surface temperature (Tmax) at the tip of the probe or thermowell = Tp(process temperature) +
self-heating. Refer to manual for calculation method.
1. Ex marking

EN
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7WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
Series T*12-B-*DG (flameproof and dustproof enclosure)
Variant 1: empty enclosure
Electri-
cal data
Marking Thermowell Temperatures
Temperature
class
Ambient 1)
Umax = 30 V
II 2G Ex db IIC T* 2) 3) Gb
II 2D Ex tb IIIC T* 3) Db
No T1 ...T5 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 1/2G Ex db IIC T* 2) 3)
Ga/Gb
II 2D Ex tb IIIC T* 3) Db
Yes T1 ... T5 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 2G Ex db IIC T6 3) Gb
II 2D Ex tb IIIC T* 3) Db
No T6 -40 ... +80 °C
[-40 ... +176 °F]
-60 ... +80 °C
[-76 ... +176 °F]
II 1/2G Ex db IIC T6 Ga/Gb
II 2D Ex tb IIIC T* 3) Db
Yes T6 -40 ... +80 °C
[-40 ... +176 °F]
-60 ... +80 °C
[-76 ... +176 °F]
1) The low ambient temperature of -40 °C [-40 °F] applies to models with Rosemount or Limatherm enclosures.The
low ambient temperature of either -40 °C [-40 °F] or -60 °C [-76 °F] applies to models with WIKA enclosures series
1/4000, 5/6000, 7/8000. For an explanation of symbols for the low temperature range, see page 14
2) The temperature class depends on the ambient temperature.
3) The maximum surface temperature (Tmax) at the tip of the probe or thermowell = Tp(process temperature) +
self-heating. Refer to manual for calculation method.
1. Ex marking

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8WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
EN
Variant 2: empty enclosure + electronics
Electri-
cal data
Marking Thermowell Temperatures
Temperature
class
Ambient 1)
Umax = 30 V
Pmax = 2 W
II 2G Ex db IIC T* 2) 3) Gb
II 2D Ex tb IIIC T* 3) Db
No T1 ...T4 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 1/2G Ex db IIC T* 2) Ga/Gb
II 2D Ex tb IIIC T* 3) Db
Yes T1 ... T4 -40 ... +85 °C
[-40 ... +185 °F]
-60 ... +85 °C
[-76 ... +185 °F]
II 2G Ex db IIC T5 3) Gb
II 2D Ex tb IIIC T* 3) Db
No T5 -40 ... +70 °C
[-40 ... +158 °F]
-60 ... +70 °C
[-76 ... +158 °F]
II 1/2G Ex db IIC T5 Ga/Gb
II 2D Ex tb IIIC T* 3) Db
Yes T5 -40 ... +70 °C
[-40 ... +158 °F]
-60 ... +70 °C
[-76 ... +158 °F]
II 2G Ex db IIC T6 3) Gb
II 2D Ex tb IIIC T* 3) Db
No T6 -40 ... +55 °C
[-40 ... +131 °F]
-60 ... +55 °C
[-76 ... +131 °F]
II 1/2G Ex db IIC T6 3) Ga/Gb
II 2D Ex tb IIIC T* 3) Db
yes T6 -40 ... +55 °C
[-40 ... +131 °F]
-60 ... +55 °C
[-76 ... +131 °F]
1) The low ambient temperature of -40 °C [-40 °F] applies to models with Rosemount or Limatherm enclosures.The
low ambient temperature of either -40 °C [-40 °F] or -60 °C [-76 °F] applies to models with WIKA enclosures series
1/4000, 5/6000, 7/8000. For an explanation of symbols for the low temperature range, see page 14.
2) The temperature class depends on the ambient temperature.
3) The maximum surface temperature (Tmax) at the tip of the probe or thermowell = Tp(process temperature) +
self-heating. Refer to manual for calculation method.
Variant 3: certified equipment (field transmitter)
Elec-
trical
data
Marking Temperatures
Temperature class Ambient
See
transmit-
ter 1)
II 2G Ex db IIC T* 2) 3) Gb
II 2D Ex tb IIIC T* 3) Db
See transmitter 1) See transmitter 1)
1) The parameters for certified equipment (field transmitter) must be taken from the relevant manual.
2) The temperature class depends on the ambient temperature.
3) The maximum surface temperature (Tmax) at the tip of the probe or thermowell = Tp(process temperature) +
self-heating. Refer to manual for calculation method.
1. Ex marking

EN
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9WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
When there is a built-in transmitter and/or a digital indicator, the special conditions from
the type examination certificate ,see chapter 4 “Special conditions of use (X conditions)”
apply.
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
Thermometers of this series are suitable for temperature measurement in zone 1 hazar-
dous areas. If the thermometer is installed in a thermowell, it is suitable for zone 21, for
zone separation between zones 20 and 21 or zone separation between zones 0 and 1.
Possible sensor measuring ranges: -196 ... +1,200 °C [-321 ... +2,192 °F].The selection
of the suitable thermowell material, dependent on the medium to be measured, must
be ensured by the operator.The replaceable, centrically spring-loaded measuring insert
and its extended spring travel enable combination with the widest range of connection
head designs.
Technical description models series T*12-B-*DB or T*12-B-*DC (flameproof
enclosure)
The electrical thermometers TR12-B-*DB, TR12-B-*DC (resistance thermome-
ters) respectively TC12-B-*DB, TC12-B-*DC (thermocouple) are made of a module
TR12-M-*D* or TC12-M-*D* which is fitted to an Ex d certified enclosure.The module
consists of a spring-loaded measuring insert TR12-A-*** or TC12-A-*** installed in a
flameproof neck tube.The measuring insert in combination with the neck tube works as
a flameproof joint.The measuring insert of the standard variants is exchangeable and
suitable to fit in a thermowell.
Variants according to drawing 14207105 are designed to install directly into the process.
The measuring insert of those variants is not exchangeable.
The probe part of the measuring insert is made of a welded tube or mineral-insulated
cable.The temperature sensor is embedded in ceramic powder, a temperature-resistant
potting compound, a cement compound or thermal compound.
If the temperature sensor is designed as grounded thermocouple, the wires of the
thermocouple are in direct contact with the sheath. Models with diameters smaller than
3 mm [0.12 in] as well as grounded thermocouples shall be considered as galvanically
connected to the ground potential.
1. Ex marking / 2. Safety

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10 WIKA additional operating instructions TR12/TC12, flameproof enclosure (Ex d, Ex t)
EN
The connection side of the measuring insert consists of a welded sleeve (transition)
including the attached connection wires.
The thermometers model TR12-M-*DB, TR12-M-*DC, TC12-M-*DB or TC12-M-*DC
will be fitted to an Ex d and Ex t certified enclosure in accordance with IECEX TUN
18.0010U or TÜV 18 ATEX 211394 U manufactured by WIKA series 1/4000, 7/8000 or
5/6000.The enclosure and covers are made of stainless steel or aluminium. The cover
could be optionally provided with a glass lens (window).
Alternatively, the thermometers can be fitted to other certified cases or assemblies, so
long as they are listed in the “WIKA ATEX and IECEx Ex d and Ex t case and instrument
list” article no.: 14011281.08 ,see „Annex 2:WIKA ATEX and IECEx case and instru-
ment list“.
3 different variants of process thermometers model T*12-B-*DB or T*12-B-*DC are
available:
■
Variant 1:The thermometer (module) model TR12-M-*D* or TC12-M-*D* is fitted to a
certified empty enclosure in the ignition protection type “flameproof enclosure”.Termi-
nals are mounted inside the case.
■
Variant 2:The thermometer (module) model TR12-M-*D* or TC12-M-*D* is fitted to
a certified empty enclosure in the ignition protection type “flameproof enclosure”.
Electronic equipment is mounted inside the case.
■
Variant 3:The thermometer (module) model TR12-M-*D* or TC12-M-*D* is fitted to
a certified equipment (field transmitter) in the ignition protection type “flameproof
enclosure”.
The modules TR12-M-*DB, TR12-M-*DC, TC12-M-*DB or TC12-M-*DC are designed
to fit to an Ex d certified enclosure by the end user.The module is marked without a
temperature class, either II 2G Ex db IIC Gb or II 1/2G Ex db IIC Ga/Gb. All conditions
and limitations as described for variants 1 to 3 apply to this combined equipment. The
responsibility rests with the operator.
2. Safety