KROHNE TCAEx User Manual

Supplementary instructions

OPTITEMP TRA/TCA

OPTITEMP TRA/TCAOPTITEMP TRA/TCA

Supplementary instructions Supplementary instructions

Industrial thermometers with replaceable measuring inserts.

Category II 1/2 G II 1 G II 1 D

CONTENTS

OPTITEMP TRA/TCA

1 Safety instructions 3

1.1 General notes ................................................................................................................... 3

1.2 EC conformity ................................................................................................................... 3

1.3 Safety instructions............................................................................................................ 3

2 Device description 4

2.1 Device description ............................................................................................................ 4

2.2 Description code............................................................................................................... 5

2.3 Marking............................................................................................................................. 7

2.4 Flammable products ........................................................................................................ 7

2.5 Equipment category .........................................................................................................8

2.6 Protection types................................................................................................................ 9

2.6.1 Protection type with zone separator for gas hazard areas.................................................... 9

2.6.2 Type of protection for gas hazard areas................................................................................. 9

2.6.3 Type of protection for dust hazard areas ............................................................................. 10

2.7 Temperature classes..................................................................................................... 11

2.7.1 Maximum permitted product temperature .......................................................................... 12

2.7.2 Temperature at process connection (without temperature transmitter)............................ 13

2.7.3 Temperature at process connection (with temperature transmitter) ................................15

2.7.4 Temperature at process connection (with temperature transmitter, classes T5 and T6).. 17

2.7.5 Temperature at process connection for thermometers with connecting cable................. 18

2.8 Electrical data................................................................................................................. 20

3 Installation 21

3.1 Selecting the right thermometer and calculating limit values ..................................... 21

3.2 Assembly ........................................................................................................................ 25

4 Electrical connections 26

4.1 General notes ................................................................................................................. 26

4.2 Power supply .................................................................................................................. 26

4.3 Inputs / Outputs.............................................................................................................. 27

4.3.1 Pt100 measuring inserts....................................................................................................... 27

4.3.2 Thermocouple measuring inserts ........................................................................................ 27

4.4 Grounding and equipotential bonding............................................................................ 28

5 Operation 29

5.1 Starting up for the first time .......................................................................................... 29

5.2 Operation ........................................................................................................................ 29

6 Service 30

6.1 Maintenance ................................................................................................................... 30

6.2 Dismantling .................................................................................................................... 30

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1.1 General notes

These additional "Ex" instructions apply to explosion-protected models of industrial thermometers with the marking II 1/2 G, II 1 G and II 1 D. They complement the standard documentation for non-explosion-protected models.

The information given in these Instructions contains only the data relevant to Category 1 explosion protection. The technical details given in the standard documentation for the nonexplosion protected versions apply unchanged unless excluded or superseded by these Instructions.

1.2 EC conformity

The manufacturer declares with the EC Declaration of Conformity on his own responsibility conformity with the protection goals of Directive 94/9/EC for use in hazardous areas with gas.

The EC Type Test Certificate of the Physikalisch Technische Bundesanstalt (PTB) forms the basis of the EC Declaration of Conformity:

SAFETY INSTRUCTIONS 1

The "X" after the certificate number refers to special conditions for safe use of the device as described in these Instructions. You can download the EC Type Test Certificate from the manufacturer's website as needed.

1.3 Safety instructions

Assembly, installation, start-up and maintenance may only be performed by personnel trained in explosion protection!

CAUTION!

Should operating conditions and locations require the observance of further standards, guidelines and laws, this is the responsibility of the operator and/or those commissioned by him.

PTB 10 ATEX 2017 X

PTB 10 ATEX 2017 XPTB 10 ATEX 2017 X

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2 DEVICE DESCRIPTION

2.1 Device description

Industrial thermometers measure the temperature of flammable and non-flammable gases and liquids. They consist of a thermometer assembly comprising a connection head and usually a thermowell (only version TRA/TCA-P14 does not have a thermowell).

The thermometer assembly contains a measuring insert, which can have either a thermocouple or a Pt100 measuring resistor as sensor. The manufacturer offers measuring inserts with a terminal block, free connection wires or a directly fitted head-mounted transmitter.

Standard version (straight thermowells)

Standard version (straight thermowells)Standard version (straight thermowells)

TRA-P10 / TCA-P10

TRA-P10 / TCA-P10 TRA-S11 / TCA-S11

TRA-P10 / TCA-P10TRA-P10 / TCA-P10

TRA-S11 / TCA-S11 TRA-S12 / TCA-S12

TRA-S11 / TCA-S11TRA-S11 / TCA-S11

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TRA-S12 / TCA-S12 TRA-F13 / TCA-F13

TRA-S12 / TCA-S12TRA-S12 / TCA-S12

TRA-F13 / TCA-F13

TRA-F13 / TCA-F13TRA-F13 / TCA-F13

With tapered tip

With tapered tip Without thermowell

With tapered tipWith tapered tip

TRA-P40 / TCA-P40

TRA-P40 / TCA-P40 TRA-S41 / TCA-S41

TRA-P40 / TCA-P40TRA-P40 / TCA-P40

TRA-S41 / TCA-S41 TRA-F42 / TCA-F42

TRA-S41 / TCA-S41TRA-S41 / TCA-S41

TRA-F42 / TCA-F42 TRA-P14 / TCA-P14

TRA-F42 / TCA-F42TRA-F42 / TCA-F42

Without thermowell

Without thermowellWithout thermowell

TRA-P14 / TCA-P14

TRA-P14 / TCA-P14TRA-P14 / TCA-P14

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2.2 Description code

The safety description code of the measuring inserts is made up of the model name and the VGC key. The following are examples to help explain the composition of the model name and the VGC key:

Model name

1 Sensor type: TCA = thermocouple, TRA = resistance thermometer 2 Type of process connection: P = insert version, S = threaded version, F = flange version 3 Internal manufacturer's designation of thermowell version

INFORMATION!

In the following chapters of this manual the model names of the thermometers start with "TxA" to avoid using the full title "TRA/TCA". Blanks in the VGC key can be omitted.

DEVICE DESCRIPTION 2

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2 DEVICE DESCRIPTION

VGC key

Designation Variants

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1 Type of thermowell tip

2 Abbreviation for full

description of thermometer

3 Ex-Approval 0 = without; 2 = ATEX- Ex-i

4 Type of connection

head

5 Sensor circuit type 0 = without; 1 = 1xPt100 2-wire; 2 = 1xPt100 3-wire; 3 = 1xPt100 4-wire;

6 Sensor class 4 = class A, Mi, WW;, A = Class 1, thermocouple

7 Thermowell material 0 = without; 1 = 1,4571, 316Ti; 2 = 1,4841, 314

8 Not Ex-relevant

9 Insertion length For VGC1: 0 = without; 1 = 75 mm / 2.95"; 2 = 100 mm / 3.94"; 3 = 115 mm /

10 Length of neck pipe For VGC1: 0 = without; 1 = 80 mm / 3.15"; 3 = 145 mm / 5.71; Z = special

11 Connection type

(head-mounted transmitter)

12 Connection type (rail-

mount transmitter)

13 Not Ex-relevant (14th to 20th position), not used (21st to 25th position)

VGC 1 = straight tip

VGC 4 = tapered tip

For VGC1: 1 = TRA-P10 (insert version); 2 = TRA-S11 (threaded version); 3 = TRA-S12 (threaded version); 4 = TRA-F13 (flange version); A = TCA-P10 (insert version); B = TCA-S11 (threaded version); C = TCA-S12 (threaded version); D = TCA-F13 (flange version); L = TRAP14 (without thermowell); T = TCA-P14 (without thermowell)

For VGC4: 1 = TRA-P40 (insert version); 2 = TRA-S41 (threaded version); 3 = TRA-F42 (flange version); A = TCA-P40 (insert version); B = TCA-S41 (threaded version);C = TCA-F42 (flange version)

3=BUZ-T; 5=BUZ-H

A = 1xthermocouple type J; B = 1xthermocouple type K

4.53"; 4 = 160 mm / 6.30"; 6 = 225 mm / 8.86"; 7 = 250 mm / 9.84"; 8 = 270 mm / 10.63"; A = 305 mm / 12.01"; B = 315 mm / 12.40"; C = 390 mm / 15.35"; D = 395 mm / 15.55"; E = 400 mm / 15.75"; F = 465 mm / 18.31"; G = 480 mm / 18.90"; H = 545 mm / 21.46"; K = 725 mm / 28.54"; Z = special length

For VGC4: 0 = without; 1 = 160 mm / 6.30"; 2 = 220 mm / 8.66"; 3 = 225 mm / 8.86"; 4 = 280 mm / 11.02"; 5 = 285 mm / 11.22"; 6 = 307mm; 7 = 345 mm / 13.58"; 8 = 367 mm / 14.45"; A = 427 mm / 16.81"; Z = special length

length

For VGC4: 0 = without; 1 = 80 mm / 3.15"; 2 = 82 mm / 3.23"; 3 = 145 mm /

5.71; 4 = 147 mm / 5.79

0 = without; 2 = head-mounted transmitter TT10C; 7 = head-mounted transmitter TT30C; D = head-mounted transmitter TT50C; E = headmounted transmitter TT51C; F = head-mounted transmitter TT60C

0 = without; 6 = rail-mount transmitter TT30R; 7 = rail-mount transmitter TT31R (1channel); 8 = rail-mount transmitter TT31R (2channel)

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2.3 Marking

1 Type designation 2 Sensor designation 3 Number of the EC Type Test Certificate 4 Ex-marking for gas and dust 5 Electrical sensor values (this information is different if a transmitter is used as the transmitter values then apply) 6 Equipment group and category for gas and dust 7 Identification number of the notified body as per Directive 94/95, Appendix IV 8 VGC key 9 Unique serial number

DEVICE DESCRIPTION 2

2.4 Flammable products

Atmospheric conditions

An explosive atmosphere is a mixture of air and flammable gases, vapours, mists or dusts under atmospheric conditions. It is defined by the following values:

= -20...+60°C / -4...+140°Fand P

atm

Outside of this range, no key data are available as to ignition behaviour for most mixtures.

Operating conditions

Outside of atmospheric conditions you cannot apply explosion protection according to Directive

94/9/EC (ATEX) – regardless of the zone assignment - due to the lack of key safety data.

DANGER!

The operator is responsible for ensuring that the industrial thermometers are operated safely as regards the temperature and pressure of the products used. Include the thermometer assembly in the periodic pressure tests of the system when operating with flammable products.

= 0.8...1.1 bar / 11.6...15.9 psi

atm

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2 DEVICE DESCRIPTION

2.5 Equipment category

Industrial thermometers are designed for use in zone 0 in category II 1 G, for use in zone 20 in category II 1 D. In category II 1/2 G all thermometers have a separator (thermowell) which separates zone 0 and zone 1.

INFORMATION!

Definition of Zone 0 according to EN 1127-1: An area with a constant or long-term or frequent explosive atmosphere made up of a mixture of flammable substances in the form of gas, vapours or mist.

For more information see the chapter entitled "Flammable products".

INFORMATION!

Definition of Zone 20 according to EN 61241-0: An area with a constant or long-term or frequent explosive atmosphere in the form of a cloud of flammable dust in air.

INFORMATION!

Definition of a device with separator as per EN 60079-26: Devices which are installed in the wall to an area requiring EPL Ga or which are part of this wall and contain electrical circuits which do not meet the requirements of the Ga protection level, must, at minimum, comply with one of the protection types that an EPL Gb offers. In addition, they must feature an integrated mechanical separator to separate the device's electrical circuits from the area requiring EPL Ga.

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For further information refer to

Flammable products

on page 7.

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DEVICE DESCRIPTION 2

2.6 Protection types

2.6.1 Protection type with zone separator for gas hazard areas

In protection type "intrinsic safety" the industrial thermometer meets the requirements of EN 60079-11. The explosion protection is guaranteed because the current and voltage are limited so that ignitable energy cannot occur.

If zone 0 and zone 1 are separated as per EN 60079-26, this will ensure that a thermowell is fitted properly. In such cases the thermometer marking is:

II 1/2G Ex ia IIC T6

II 1/2G Ex ia IIC T6II 1/2G Ex ia IIC T6

Components of the Ex marking and what they mean

II Group II explosion protection

IIII

1/2

1/2 Equipment category 1/2

1/21/2

GGGG Gas explosion protection

Ex ia

Ex ia Intrinsically safe equipment

Ex iaEx ia

IIC

IIC Gas groups IIA, IIB, IIC

IICIIC

T6 Temperature classes T6...T1

T6T6

2.6.2 Type of protection for gas hazard areas

II 1G Ex ia IIC T6

II 1G Ex ia IIC T6II 1G Ex ia IIC T6

Components of the Ex marking and what they mean

II Group II explosion protection

IIII

1111 Equipment category 1

GGGG Gas explosion protection

Ex ia

Ex ia Intrinsically safe equipment

Ex iaEx ia

IIC

IIC Gas groups IIA, IIB, IIC

IICIIC

T6 Temperature classes T6...T1

T6T6

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2 DEVICE DESCRIPTION

2.6.3 Type of protection for dust hazard areas

In protection type "Protection through instrinsic safety" the industrial thermometer meets the requirements of EN 61241-11. The dust protection is guaranteed by housing which provides appropriate protection against penetration by dust. Current and voltage are also limited so that ignitable energy cannot occur. All thermometers with these features have the following marking:

II 1D Ex iaD 20 IP65 T140

II 1D Ex iaD 20 IP65 T140°C

II 1D Ex iaD 20 IP65 T140II 1D Ex iaD 20 IP65 T140

Components of the Ex marking and what they mean

II Group II explosion protection

IIII

1111 Equipment category 1

DDDD Dust explosion protection

Ex ia D

Ex ia D Dust protection type intrinsic safety "iaD"

Ex ia DEx ia D

20 Use in zone 20

2020

IP65

IP65 Foreign bodies and water pollution control

IP65IP65

T140

T140°C

C Maximum surface temperature of industrial thermometer without dust coating at ambient

T140T140

temperature 100°C / 212°F and product temperature 100°C / 212°F

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DANGER!

As the TxA-P14 model does not have a thermowell, you must allow for a higher maximum surface temperature! The marking is therefore:

II 1D Ex iaD 20 IP65 T175

II 1D Ex iaD 20 IP65 T175°C

II 1D Ex iaD 20 IP65 T175II 1D Ex iaD 20 IP65 T175

Components of the Ex marking and what they mean (TxA-P14)

II Group II explosion protection

IIII

1111 Equipment category 1

DDDD Dust explosion protection

Ex ia D

Ex ia D Dust protection type intrinsic safety "iaD"

Ex ia DEx ia D

20 Use in zone 20

2020

IP65

IP65 Foreign bodies and water pollution control

IP65IP65

T175

T175°C

C Maximum surface temperature of industrial thermometer without dust coating at ambient

T175T175

temperature 100°C / 212°F and product temperature 100°C / 212°F

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