WIKA TR12 Series Instrucciones de funcionamiento

Additional operating instructions

Zusatz-Betriebsanleitung

Informations supplémentaires

Información adicional

TÜV 10 ATEX 555793X

IECEx TUN 10.0002X

Additional operating instructions for hazardous areas (Ex i)

Models TR12 and TC12

Zusatz-Betriebsaneleitung für explosionsgefährdete Bereiche (Ex i)

Typen TR12 und TC12

Mode d’emploi complémentaires concernant les zones explosives

(Ex i), types TR12 et TC12

Manual de instrucciones adicional para zonas potencialmente

explosivas (Ex i) Modelos TR12 y TC12

Models TR12-A, TC12-A Models TR12-B, TC12-B Models TR12-M, TC12-M

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WIKA additional information TR12/TC12, intrinsically safe designs (Ex i)

Additional operating instructions

models TR12, TC12

(Ex i)

Page

3 - 24

Zusatz-Betriebsaneleitung

Typen TR12, TC12 (Ex i)

Seite

25 - 46

Mode d’emploi complémentaires

types TR12, TC12

(Ex i)

Page

47 - 68

Manual de instrucciones adicional

para los modelos

TR12, TC12 (Ex i)

Página

69 - 89

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!

1. Ex marking 4

2. Safety 6

3. Commissioning, operation 8

4. Special conditions of use (X conditions) 18

5. Calculation examples for self-heating at the thermowell tip 20

Annex: EU declaration of conformity 23

Declarations of conformity can be found online at www.wika.com.

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WIKA additional operating instructions TR12/TC12, intrinsically safe designs (Ex i) 3

Contents

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WIKA additional operating instructions TR12/TC12, intrinsically safe designs (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 certifica-

te 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 natio-

nal 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 T1 ... T6 Da

II 1/2D Ex ia IIIC T1 ...T6 Da/Db

II 2D Ex ia IIIC T1 ... T6 Db

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).

14280102.02 02/2023 EN/DE/FR/ES

WIKA additional operating instructions TR12/TC12, intrinsically safe designs (Ex i) 5

For applications without transmitters (digital indicators) requiring instruments of equipment

group II (potentially explosive gas atmospheres), the following temperature class classifica-

tion and ambient temperature ranges apply:

Table 1

Marking Tempe-

rature

class

Ambient tempe-

rature range (Ta)

Max. surface

temperature

(Tmax) at the probe 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 ...T6 (-50) 1) -40 ... +80 °C

[(-58) 1)-40 ... +176 °F]

TM(medium temperature) +

self-heating

For this, the special condi-

tions must be observed (see

chapter 4 „Besondere Bedin-

gungen für die Verwendung

(X-Conditions)“).

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

Ambient tempe-

rature range (Ta)

Max. surface

temperature

(Tmax) at the probe or ther-

mowell tip

ATEX IECEx

II 1D Ex ia IIIC T1 ... T6 Da

II 1/2D Ex ia IIIC T1 ...T6 Da/Db

II 2D Ex ia IIIC T1 ... T6 Db

750 mW (-50) 1) -40 ... +40 °C

[(-58) 1)-40 ... +104 °F] TM(medium temperature) +

self-heating

For this, the special conditions

must be observed (see chapter 4

„Besondere Bedingungen für die

Verwendung (X-Conditions)“).

II 1D Ex ia IIIC T1 ... T6 Da

II 1/2D Ex ia IIIC T1 ...T6 Da/Db

II 2D Ex ia IIIC T1 ... T6 Db

650 mW (-50) 1) -40 ... +70 °C

[(-58) 1)-40 ... +158 °F]

II 1D Ex ia IIIC T1 ... T6 Da

II 1/2D Ex ia IIIC T1 ...T6 Da/Db

II 2D Ex ia IIIC T1 ... T6 Db

550 mW (-50) 1) -40 ... +80 °C

[(-58) 1)-40 ... +176 °F]

1) The values in brackets apply to special versions.These probes are manufactured using special potting compounds. Moreo-

ver, they feature cases made of stainless steel and cable glands for low-temperature ranges.

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.

1. Ex marking

14280102.02 02/2023 EN/DE/FR/ES

WIKA additional operating instructions TR12/TC12, intrinsically safe designs (Ex i)6

Use in methane atmospheres

Due to the higher minimum ignition current of methane, the instruments can also be used

where methane causes a potentially explosive gas atmosphere.The instrument can optio-

nally be marked with IIC + CH4.

For applications that require EPL Gb or Db, the instruments marked with “ia” can also be

used in type “ib” measuring circuits.

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 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 manager and not the

manufacturer/supplier of the equipment.

2.4 Personnel qualification

The skilled electrical personnel must have knowledge of ignition protection types, regulati-

ons and provisions for equipment in hazardous areas.

1. Ex marking / 2. Safety

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WIKA additional operating instructions TR12/TC12, intrinsically safe designs (Ex i) 7

2.5 Labelling, safety marks

Product label (example)

TR12-M-IIBZ

1 x Pt100 / A / 3 (F) -50 ... +500 °C

Um = DC 30 V / Pm = 2 W

BVS 07 ATEX E 071 X

IECEx BVS 11.0042X

II 2 G Ex db IIC T* Gb

EN 60751

0158

WIKA Alexander Wiegand SE & Co.KG, D-63911 Klingenberg

Made in Germany 2013 WARNING: DO NOT OPEN WHILE ENERGIZED!

11012345

TR12-B-IDBZ

1 x Pt100 / A / 3 (F) -50 ... +500 °C

Um = DC 30 V / Pm = 2 W

BVS 07 ATEX E 071 X

IECEx BVS 11.0042X

II 2 G Ex db IIC T* Gb

EN 60751

0158

WIKA Alexander Wiegand SE & Co.KG, D-63911 Klingenberg

Made in Germany 2013 WARNING: DO NOT OPEN WHILE ENERGIZED!

11012345

TC12-B-IDBZ

1 x Typ K / 1 / . 0 ... +600 °C

Um = DC 30 V / Pm = 2 W

BVS 07 ATEX E 071 X

IECEx BVS 11.0042X

II 2 G Ex db IIC T* Gb

EN 60584-1

0158

WIKA Alexander Wiegand SE & Co.KG, D-63911 Klingenberg

Made in Germany 2013 WARNING: DO NOT OPEN WHILE ENERGIZED!

11012345

TR12-M-IDK*

1 x Pt100 / A / 3 (F) -50 ... +500 °C

Um = DC 30 V / Pm = 2 W

BVS 07 ATEX E 071 X

IECEx BVS 11.0042X

II 2 G Ex db IIC T* Gb

EN 60751

0158

WIKA Alexander Wiegand SE & Co.KG, D-63911 Klingenberg

Made in Germany 2013 WARNING: DO NOT OPEN WHILE ENERGIZED!

11012345







 



Model

A = measuring insert

B = process thermometer

M = basic module

Serial number

Approval-related data

Year of manufacture



■

Information on version (measuring element, measuring range...)

Sensor in accordance with standard (resistance thermometer)

- F = Thin-film measuring resistor

- W = Wire-wound measuring resistor

Sensor in accordance with standard (thermocouple)

- ungrounded = ungrounded welded

- grounded = welded to the sheath (grounded)

- quasi grounded = The thermometer is, due to its low insulation clearances between resis-

tance sensor and sheath, to be considered as grounded.

■

Transmitter model (only for design with transmitter)

Before mounting and commissioning the instrument, ensure you

read the operating instructions!

2. Safety

14280102.02 02/2023 EN/DE/FR/ES

WIKA additional operating instructions TR12/TC12, intrinsically safe designs (Ex i)8

3. Commissioning, operation

DANGER!

Danger to life from explosion

By using a measuring insert without a suitable connection head (case), an

explosion risk occurs which can cause fatalities.

▶

Only use the measuring insert in the connection head designed for it.

DANGER!

Danger to life from missing instrument grounding

With missing or incorrect grounding, there exists a risk of dangerous voltages

(leading to, for example, mechanical damage, electrostatic charge or induc-

tion).

▶

Ground thermometer!

Observe the special conditions (see chapter 4 „Special conditions of use (X conditions)“,

point 2).

3.1 Safety-related instructions for the different variants

TR12-B, TC12-B

Variant 1

TR12-B, TC12-B

Variant 2

TR12-B, TC12-B

Variant 3

Thread

TR12-M, TC12-M

Module

Thread

Thread Thread Thread

Legend:

Connection head

Neck tube

Connection to thermowell/

protection tube

Measuring insert

Terminal block

Transmitter (option)

Field transmitter

14039769.01

Tundefined

3. Commissioning, operation

T4: (-50) -40 °C [(-58) -40 °F] < Ta< +80 °C [+176 °F]

T3: (-50) -40 °C [(-58) -40 °F] < Ta< +150 °C [+302 °F]

T1: (-50) -40 °C [(-58) -40 °F] < Ta< +300 °C [+572 °F]

14280102.02 02/2023 EN/DE/FR/ES

WIKA additional operating instructions TR12/TC12, intrinsically safe designs (Ex i) 9

3.1.1 Variant 1

The thermometer is fitted to a certified enclosure in which the terminal block is fitted. If the

thermometer is marked with II 2G Ex ia IIC T1 ... T6 Gb, then it is designed for use in zone

1. If the thermometer is marked with II 1/2G Ex ia IIC T1 ...T6 Ga/Gb, then it is designed for

use with a thermowell at the partition to zone 0.

▶

ATEX/IECEx case or connection head (with connection terminals, without transmitter)

Evaluation of the resistance or the thermoelectric voltage by means of an electronic

assembly outside of the hazardous area.

Use in zone 1, marking II 2G Ex ia IIC T1 ... T6 Gb

The case or the connection head is in zone 1 (or zone 2).The sensor is located in zone 1.

Use at the partition to zone 0, marking II 1/2G Ex ia IIC T1 ... T6 Ga/Gb

The case or the connection head is in zone 1 (or zone 2).The sensor is within a thermowell

(min. wall thickness 1 mm) which extends into zone 0 via a process connection.

Powering with Ex ia electric circuit fulfils these conditions.The responsibility rests with the

operator.

The permissible ambient temperatures for third-party products can be seen from the

relevant approvals or data sheets.

A heating in the connection head does not occur with variant 1. However, an impermissible

heat backflow from the process which can exceed the operating temperature of the case

or the temperature class, must be prevented through suitable heat insulation or a suitably

long neck tube.

3. Commissioning, operation

14280102.02 02/2023 EN/DE/FR/ES

WIKA additional operating instructions TR12/TC12, intrinsically safe designs (Ex i)10

3.1.2 Variant 2

The thermometer is tted to certied enclosures, which have an electronic assembly built

into it. If the thermometer is marked with II 2G Ex ia IIC T1 ...T6 Gb, then it is designed for

use in zone 1. If the thermometer is marked with II 1/2G Ex ia IIC T1 ...T6 Ga/Gb, then it is

designed for use with a thermowell at the partition to zone 0.

▶

ATEX/IECEx Ex ia case or connection head with built-in head-mounted transmitter

The evaluation is made via a current (4 … 20 mA), voltage (0 … 10 V) or fieldbus signal,

which is generated from a head-mounted transmitter.

Use in zone 1, marking II 2G Ex ia IIC T1 ... T6 Gb

The case or the connection head is in zone 1 (or zone 2).The sensor is located in zone 1.

Use at the partition to zone 0, marking II 1/2G Ex ia IIC T1 ... T6 Ga/Gb

The case or the connection head is in zone 1 (or zone 2).The sensor is within a thermowell

(min. wall thickness 1 mm) which extends into zone 0 via a process connection.

The thermometer should be operated with a power-limiting circuit.

Pmax: 1.5 W

Umax: 30 V

Powering with Ex ia electric circuit fulfils these conditions.The responsibility rests with the

operator.

A heating in the connection head can occur with variant 2 through faulty electronics.The

permissible ambient temperatures depend on the case used and any additionally fitted

head-mounted transmitter.

However, an impermissible heat backflow from the process which can exceed the opera-

ting temperature of the case or the temperature class, must be prevented through suitable

heat insulation or a suitably long neck tube.

3.1.3 Variant 3

The thermometer is fitted to certified equipment (transmitter).The thermometer is marked

with II 2G Ex ia IIC Tx Gb and is designed for use in zone 1 with a thermowell. For any

potential usage at the partition to zone 0 with a thermowell, the approvals and conditions of

3. Commissioning, operation

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