WIKA TC82 Mode d'emploi

Additional operating instructions

Zusatz-Betriebsanleitung

Additional operating instructions

for hazardous areas (Ex i)

Models TC82, TC83

Zusatz-Betriebsanleitung für explosionsgefährdete Bereiche (Ex i)

Typen TC82, TC83

BVS 20 ATEX E 044 X

IECEx BVS 20.0033X

Models TC82-F Models TC83-F

14302224.01 01/2023 EN/DE

Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i)

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!

Additional operating instructions

models TC82,

TC83 (Ex i) Page 3 - 20

Zusatz-Betriebsanleitung Typen TC82, TC83 (Ex i) Seite 21 - 38

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Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i) 3

Contents

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

1. Ex marking 4

2. Safety 6

3. Commissioning, operation 8

4. Special conditions for use (X conditions) 15

5. Measures to reduce the risk of ignition 18

Annex: EU declaration of conformity 20

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Additional operating instructions TC82, TC83, 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 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.

Models series TC82-F-*IL or TC83-F-*IL (gas application)

Variant Electrical

data

Temperatures Marking

Ambient 1) Temperature

class

Variant 1:

Empty

enclosure

Ui= DC 30 V

Ii= 110 mA

Pi= 500 mW

Li, Ci= negligible

-40 … +85 °C

-60 … +85 °C

T5 ...T1 II 2/-G Ex ia IIC T*(2) Gb/-

-40 … +80 °C

-60 … +80 °C

T6 II 2/-G Ex ia IIC T6 Gb/-

Variant 2:

Empty

enclosure +

electronic

See electronics 3) See electronics 3) See electronics 3) II 2/-G Ex ia IIC T*(2) Gb/-

Variant 3:

Field

transmitter

See transmitter 3) See transmitter 3) See transmitter 3) II 2/-G Ex ia IIC T*(3) Gb/-

1) For variant 1 and 2:The low ambient temperature -40 °C applies to models with Limatherm or Rosemount cases.The low ambient

temperature of either -40 °C or -60 °C applies to models with WIKA connection head series 1/4000, 5/6000, 7/8000. For explanation

of symbols for low temperature range see chapter 2.5 “Labelling, safety marks”

2) The temperature class depends on the ambient temperature.

3) The parameters for variant 2 and variant 3 Transmitters have to be taken out of the related operating instructions.

1. Ex marking

Supplementary documentation:

▶This additional information for hazardous areas applies in conjunction with the

operating instructions “High-temperature thermocouples, models TC80, TC82, TC83

Calitum®, TC84“ (article number 14486177).

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Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i) 5

Models series TC82-F-*IO or TC83-F-*IO (gas and dust application)

Variant Electrical

data

Temperatures Marking

Ambient 1) Temperature

class

Variant 1:

Empty

enclosure

Ui= DC 30 V

Ii= 110 mA

Pi= 500 mW

Li, Ci= negligible

-40 … +85 °C

-60 … +85 °C

N/A II 2/-G Ex ia IIC T*(2) Gb/-

II 2/-D Ex ia IIIC T135 °C Db/-

Variant 2:

Empty

enclosure +

electronic

See electronics 3) See electronics 3) See electronics 3) II 2/-G Ex ia IIC T*(2) Gb/-

II 2/-D Ex ia IIIC T* Db/-

Variant 3:

Field

transmitter

See transmitter 3) See transmitter 3) See transmitter 3) II 2/-G Ex ia IIC T*(3) Gb/-

II 2/-D Ex ia IIIC T*(3) Db/-

1) For variant 1 and 2:The low ambient temperature -40 °C applies to models with Limatherm or Rosemount cases.The low ambient

temperature of either -40 °C or -60 °C applies to models with WIKA connection head series 1/4000, 5/6000, 7/8000. For explanation

of symbols for low temperature range see chapter 2.5 “Labelling, safety marks”

2) The temperature class depends on the ambient temperature.

3) The parameters for variant 2 and variant 3 Transmitters have to be taken out of the related operating instructions.

When there is a built-in transmitter and/or a digital display, the special conditions from the

type examination certificate (see chapter 4 “Special conditions for use (X conditions)”)

apply.

1. Ex marking

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Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i)6

2. Safety

2.1 Explanation of symbols

WARNING!

... indicates a potentially dangerous situation that can result in serious injury or

death, if not avoided.

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 like e.g. sulphur recovery units (SRU).

The electrical thermometer model TC82-F-*I* or TC83-F-*I* is made of a module (model

TC8x-M), which is fitted to an suitable case.

The cases shall either come along with their own IECEx/ATEX certification or they shall

comply to the minimum requirements.

IP protection:

At least IP20 for gas hazardous environments and at least IP6X for dust hazardous

environments. For types with a transmitter installed, the specification in the transmitters

certificate shall be followed. Light metal enclosures, however, shall be suitable in

accordance with EN/IEC 60079-0 clause 8. Non-metal enclosures or powder-coated

enclosures shall additionally comply with the electrostatic requirements of EN/IEC 60079-0

or have a corresponding warning marking. Refer to the section „Specific conditions for safe

use“ for Ex i models (no. 1 and no. 2).

The module TC82-M, TC83-M consists of the flange assembly with ceramic tubes, all

parts of electrical insulation of the thermocouple wires and a gas-tight bushing to limit the

flameproof area and the intrinsically safe area.

The sensing part of the module is made of ceramic insulated thermocouple wires.

3 different variants of thermometers TC82-F-*I* or TC83-F-*I* are available:

■Variant 1:The thermometer (module) model TC82-M or TC83-M is fitted to a suitable

case.Terminals are mounted inside the case.

■Variant 2:The thermometer (module) model TC82-M or TC83-M is fitted to a suitable

case. Electronic equipment is mounted inside the case.

■Variant 3:The thermometer (module) model TC82-M or TC83-M is fitted to a certified

apparatus (transmitter) in the type of protection “Intrinsically safe”.

The module TC82-M, TC83-M is designed to fit to a suitable enclosure by the end user.

2. Safety

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Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i) 7

The module is marked without temperature class, either with II 2/-G Ex ia IIC Gb/- or

additionally with II 2/-D Ex ia IIIC Db/-. All conditions and limitations described for the

variants 1 to 3 apply to this combined equipment.The responsibility rests to the operator.

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).

War

2.3 Responsibility of the operator

The responsibility for classification of zones lies with the plant operator and not the

manufacturer/supplier of the equipment.

2.4 Personnel qualification

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

regulations and provisions for equipment in hazardous areas.

2.5 Labelling, safety marks

Additional product label (example)

Approval-related data

Symbol for the usability of the instrument in ambient temperatures down to

-60 °C [-76 °F].



TÜV 10 ATEX 555793 X

IECEx TUN 10.0002X

II 2 G Ex ib IIC T1 ... T6 Gb

Tamb see manual

********ATEX ******

IECEx ************

II 2/-G Ex db IIC T6 ... T1 Gb/-

Tamb see manual

WARNING! DO NOT OPEN WHILE ENERGIZED!

Ex d

Ex i

2. Safety

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Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i)8

3. Commissioning, operation

DANGER!

Danger to life from explosion

Through working in flammable atmospheres, there is a risk of explosion which

can cause death.

▶Only carry out set-up work in non-hazardous environments!

▶Do not open the instrument while under voltage.

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 due to loss of explosion protection

If the corresponding tightening torques are not observed, this can lead to a

loss of the explosion protection.

▶Ensure the tightening torques in accordance with chapter 3.2.

WARNING!

Damage to the measuring instrument by operation outside the upper or

lower limits of the operating temperature

Failure to observe the permissible operating temperature, also taking into

account convection and radiation, can even cause damage to the thermometer

during mounting.

▶The upper and lower limits of the specified operating temperature range

must not be exceeded.

WARNING!

Potential electrostatic charging hazard

There is a risk of electrostatic discharges for group IIIC EPL Db.

▶For application in areas requiring EPL Db equipment and in areas with

high or repeated charging processes, special protective measures must be

taken.

Observe the special conditions (see chapter 4 “Special conditions for use (X conditions)”).

3. Commissioning, operation

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Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i) 9

3. Commissioning, operation

3.1 Mechanical mounting

3.1.1 Parallel threads

If the thermometer connection head, neck tube, protection tube or process connection are

connected with parallel threads (e.g. G ½, M20 x 1.5 ...), these threads must be secured

using seals which prevent liquids from penetrating into the thermometer.

As standard, WIKA uses copper seals for the connection between the neck tube and the

protection tube, and a paper flat gasket for the connection of the connection head and the

neck tube or protection tube.

If the thermometer and the protection tube are already connected, the seals will already be

mounted (if ordered).The plant operator must check whether the seals are suitable for the

operating conditions and must replace them, if necessary, with suitable seals (see chapter

11 “Accessories” in the operating instructions “High-temperature thermocouples, models

TC80, TC82, TC83 Calitum®, TC84“ (article number 14486177)).

Seals must be replaced after dismounting!

3.1.2 Tapered threads

With NPT or other tapered threads, it should be checked whether it may be necessary

to seal them additionally with PTFE tape or hemp.The threads must be lubricated with a

suitable lubricant before fitting.

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Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i)10

3. Commissioning, operation

3.2 Tightening torques

■Only ever screw in, or unscrew, the instrument via the spanner flats and to the

prescribed torque using an appropriate tool.

■The correct torque depends on the dimensions of the connection thread and the sealing

used (form/material).

■When screwing in or unscrewing the instrument, do not use the connection head as

contact surface.

■When screwing in the instrument, please observe that the threads are not skewed.

■Assure that the purge gas connection is tighten and no gas can escape, so that there is

no carry-through between zones.

Connection head, selectable (example)

Thread Tightening torques in Nm

Connection head material

Aluminium Stainless steel

½ NPT T.F.F.T 2 - 3 1) T.F.F.T 2 - 3 1)

¾ NPT T.F.F.T 2 - 3 1) T.F.F.T 2 - 3 1)

M20 x 1.5 with counter nut 23 25

M24 x 1.5 with counter nut 27 30

Thread Tightening torques in Nm

Connection head material

Aluminium Stainless steel

¼ NPT T.F.F.T 2 - 3 1) T.F.F.T 2 - 3 1)

Tightening torques between connection head and neck tube

Tightening torques between purge connection and purge piping

1) Turns from finger tight (T.F.F.T)

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