WIKA TR10-W User manual

Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones
GB
D
F
E
Models TR10-W, TC10-W
Resistance thermometer and thermocouple with protection
type ameproof enclosure Ex-d per directive 94/9/EC (ATEX)
Widerstandsthermometer und Thermoelement in Zündschutz-
art druckfeste Kapselung Ex-d nach Richtlinie 94/9/EG (ATEX)
Thermomètre à résistance et thermocouple en mode de
protection antidéagrante Ex-d selon directive 94/9/CE (ATEX)
Termorresistencia y termopar en envolventes antideagrantes
Ex-d según la directiva 94/9/CE (ATEX)
Ex-d BVS 07 ATEX E 071 X
IECEx BVS 11.0042X

GB
D
F
E
2
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W
Operating instructions model Tx10-W Page 3 - 26
Betriebsanleitung Typ Tx10-W Seite 27 - 42
Mode d'emploi type Tx10-W Page 43 - 58
Manual de instrucciones modelo Tx10-W Página 59 - 74

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Contents
1. Safety instructions 4
2. General 5
3. Dimensions and installation 7
4. Technical data and wiring details 9
5. Maintenance and servicing 9
6. General information on explosion protection 10
7. Notes regarding the safety for the dierent versions 12
8. Examples of calculations, self-heating of the sensor tip 15
9. Disposal 16
Appendix 1: EC prototype examination certicate 17
Appendix 2: WIKA housing and device list 23
Appendix 3: IECEx declaration of conformity 24
Appendix 4: EC declaration of conformity 26
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W 3
Contents
Information
This symbol provides you with information, notes and tips.
WARNING!
This Symbol warns you against actions that can cause injury to
people or damage to the instrument.

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14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W4
1. Safety instructions
For all work on the thermometer, please observe the national
safety and accident prevention regulations and the safety
instructions indicated in these operating instructions.
■
Using the instrument for purposes other than those described in the
following instructions is considered contrary to its designated use and
must therefore be avoided.
■
If faults cannot be eliminated, the device must be taken out of
operation and prevented from being accidentally put back into service.
■
Before installation, commissioning and operation the user must ensure
that the appropriate thermometer is selected, with regard to scale
range and performance and the appropriate wetted material (corrosion)
for the respective application's specic measuring conditions.
■
Serious injuries and/or damage can occur should the appropriate
regulations not be observed.
■
For hazardous pressure media such as oxygen, acetylene, ammable
or toxic gases or liquids, as well as air conditioning plant, compres-
sors, etc., in addition to all standard regulations, the appropriate
existing codes or regulations must also be followed.
■
Residual pressure medium in removed thermometers may be
hazardous or toxic. Appropriate safety measures must be taken.
■
Repairs may only be carried out by the manufacturer. The instrument
must not be interfered with or changed.
■
We reserve the right to make technical changes without notice.
Further important safety instructions can be found in the
individual sections of this manual.
Avoid putting mechanical stress on the electrical connections
and on the enclosures.
All connections must only be opened when the instrument is
depressurised and has cooled down.
1. Safety instructions

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14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W 5
2. General
2.1 Product description / design TR10-W
The model TR10-W resistance thermometers consist of a ameproof, encapsu-
lated enclosure and a measuring insert which is securely mounted in an neck
tube. The measuring insert in combination with the neck tube has the eect of
amepath. For the selection of housings for mounting and installation, the WIKA
housing/equipment list is authoritative. For this, the latest revision must always
be used.
The thermometers are designed to be shock and vibration proof and the electric
components are protected against splash water. The standard version oers
vibration resistance in accordance with DIN EN 60751 (up to 3 g). The shock
resistance of all versions comply with the requirements of DIN EN 60751. The
electrical connection is made via Ex-d approved accessories.
2.2 Designated use
Resistance thermometers of these series must be inserted in a thermowell with
a wall thickness of at least 1 mm. The thermowell design can be user-dened,
however the operational process data (temperature, pressure, density and ow
velocity) must be taken into account.
The possible measuring ranges of the sensor are between -200 ... +600 °C.
2.3 Product description / design TC10-W
The model TC10-W thermocouples consist of a ameproof, encapsulated
enclosure, a measuring insert which is mounted resiliently in an neck tube. The
measuring insert in connection with the neck tube has the eect of a amepath.
For the selection of housings for mounting and installation, the WIKA housing/
equipment list is authoritative. For this, the latest revision must always be used.
The thermometers are designed to be shock and vibration proof and the electric
components are protected against splash water.
The electrical connection is made via Ex-d approved accessories.
2.4 Designated use
Thermocouples of these series must be inserted in a thermowell with a wall
thickness of at least 1 mm. The thermowell design can be user-dened, however
the operational process data (temperature, pressure, density and ow velocity)
must be taken into account.
Possible measuring ranges are between -200 ... +1200 °C.
2. General

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2. General
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W6
The thermometers described above are designed and manufactured using state-
of-the-art technology. All components undergo strict quality inspections during
production.
Please inspect the devices for any possible damage during
transportation. Should there be any obvious damage, please inform
the transport company and WIKA without delay.
The following mounting and operating information has been compiled with care.
However, it is not possible to foresee all eventualities. If you cannot nd
information on your specic problem, further information can be found:
■
Internet address: www.wika.de / www.wika.com
■
Respective data sheets: TE 60.14 (TR10-W) and TE 65.14 (TC10-W)

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3. Dimensions and installation
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WIKA operating instructions models TR10-W, TC10-W 7
Version 1:
The thermometer is mounted on a certied enclosure, with an integrated terminal
strip, with ignition protection type 'ameproof enclosure'. If the thermometer is
marked with II 2G Ex d IIC T1-T6 Gb, it is intended for zone 1 operation with a
thermowell.
If the thermometer is marked with II 1/2G Ex d IIC T1-T6 Ga/Gb, it is intended for
operation with a thermowell at the transition to zone 0.
Version 1: ATEX/
IECEx Ex-d housing
or connection head
(with terminals, without
transmitter)
Version 2: ATEX/
IECEx Ex-d housing or
connection head (with
integral head-mounted
transmitter)
Version 3: Temperature
transmitter certied to
ATEX/IECEx Ex-d
3. Dimensions and installation
3.1 Technical description of the three dierent versions and their possible
certication:
Thread Thread Thread
T4
T3
T1
Tundened
T4: (-50)-40 °C < Ta < +85 °C
T3: (-50)-40 °C < Ta < +150 °C
T1: (-50)-40 °C < Ta < +300 °C
Legend:
Connection head
Neck tube
Connection to thermowell
Measuring insert
Terminal block/transmitter (option)
Field transmitter
6

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3. Dimensions and installation
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WIKA operating instructions models TR10-W, TC10-W8
Version 2:
The thermometer is mounted on a certied enclosure, with integral electronics,
with ignition protection type 'ameproof enclosure'.
If the thermometer is marked with II 2G Ex d IIC T1-T6 Gb, it is intended for
zone 1 operation with a thermowell.
If the thermometer is marked with II 1/2G Ex d IIC T1-T6 Ga/Gb, it is intended for
operation with a thermowell at the transition to zone 0.
Version 3:
The thermometer is mounted to certied equipment (transmitter) with ignition
protection type 'ameproof enclosure'.
If the thermometer is marked with II 2G Ex d IIC Gb, it is intended for zone 1
operation, inserted in a thermowell. If it is to be mounted, inserted in a
thermowell, at the transition to zone 0, the approvals and requirements for the
respective transmitter must be observed.
3.2 Neck tube types
Fixed design Multi-part design
11401940.01
Thread
Thread Thread
Thread
3.3 Housings and connection heads
For the dimensions of the housings and connection heads, please refer to the
respective data sheet.

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4. Technical data, wiring details / 5. Maintenance, ...
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WIKA operating instructions models TR10-W, TC10-W 9
4. Technical data and wiring details
4.1 Version 1:
The electrical data (e.g. circuit diagrams, limit deviations, etc.) is indicated in the
data sheets TE 60.14 (for TR10-W) and TE 65.14 (for TC10-W).
4.2 Version 2:
The electrical data (e.g. circuit diagrams, limit deviations, etc.) is indicated in the
respective data sheets for the integral head-mounted transmitters.
4.3 Version 3:
The electrical data (e.g. circuit diagrams, limit deviations, etc.) is indicated in the
respective data sheets for the integral Ex-d certied eld transmitters.
5. Maintenance and servicing
The thermometers described here are completely maintenance-free! But we
recommend a regular calibration!
The interface between the measuring cable and the connecting leads is potted
against moisture using a 2-component adhesive.
The connecting leads have a wire thickness of 0.5 mm², a wire length of
150 mm and are marked in dierent colours dependant on their sensor type.
The measuring insert is secured against twisting in the neck tube by appropriate
spot welds.
This means that the connecting leads xed to a terminal block, transmitter or the
like in the housing cannot be twisted and thus sheared o.

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6. General information on explosion protection
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W10
6. General information on explosion protection
The requirements of the 94/9/EC (ATEX) directive must be observed.
Additionally, the respective country-specic regulations concerning
the use in potentially explosive atmospheres (e.g. EN/IEC 60079-10
and EN/IEC 60079-14) are applicable.
■
The plant manager and not the manufacturer/equipment supplier is
responsible for the zone classication.
■
It is the sole responsibility of the plant operator to ensure that thermometers
which are complete and in operation are identiable with respect to all their
safety-related features. Damaged thermometers must not be used.
■
For the installation of the thermometers, only components (e.g. cables, cable
glands, etc.) which are suitable for ameproof enclosures must be used.
■
Observe the conditions given in EN/IEC 60079-14 for the grounding of
conducting shields.
■
When using a transmitter/digital indicator observe:
- The content of these operating instructions and the operating instructions of
the transmitter/digital indicator
- The respective regulations for the installation and operation of electrical
equipment
- The ordinances and directives regarding explosion protection
■
The ameproof thermometers must only be mounted to certied housings or
connection heads with the ignition protection type 'ameproof enclosure'.
■
Approved and listed eld housings (Version 3) must only be mounted and
installed by a trained technician using the best-available technology.
■
The thread gab for electrical equipment allowed for installation in potentially
explosive gas atmospheres are indicated in EN/IEC 60079-1. The thread
gab (Section 5.3) of parallel threads (per Table 3) for a housing volume of
< 100 cm³ must be ≥ 5 mm and for a housing volume > 100 cm³ ≥ 8 mm.
At least 5 threads must be screwed in. Tapered threads (per Table 3) must
have ≥ 5 threads on each component. At least 3.5 threads must be screwed
in. These instructions regarding the thread gabs must be observed during
installation and operation.
■
The direct screw connection between the thermometer and the connection
head or housing must not be twisted or opened. The housing can only be
adjusted by means of the optional two-part neck tube.

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6. General information on ... / 7. Notes regarding the ...
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WIKA operating instructions models TR10-W, TC10-W 11
■
The temperature resistance of the connecting cable must comply with the
allowed operating temperature range. For ambient temperatures higher than
60 °C, heat-resistant connecting cables must be used.
■
No batteries may be mounted in the ameproof housings.
■
No capacitors which, after the time required for opening the housing, still have
a remaining energy of ≥ 0.02 mJ may be tted within the ameproof housings.
The housing must not be opened during operation. After switching o the
operating voltage, wait 2 minutes before opening the housing.
■
Installation in metal containers:
The housing must be grounded against electromagnetic elds and
electrostatic discharge. A separate connection to the equipotential bonding
system is not required. A xed and secure contact between the metallic
thermowell and the metallic container, its structural parts or pipes is sucient
if these components are connected to an equipotential bonding system.
■
Installation in non-metallic containers:
All electrically conducting thermometer components which protrude into the
hazardous area must be provided with equipotential bonding.
■
Repairs or structural modications are not allowed and will result in the
invalidation of the guarantee and the respective approval.
■
The manufacturer cannot be held liable for structural modications after the
delivery of the devices.
7. Notes regarding the safety for the dierent versions
7.1 Version 1:
ATEX/IECEx Ex-d housing or connection head (with terminals, without
transmitter). Signal processing of the resistance or the thermoelectric voltage by
electronics outside the area.
7.1.1 Use in zone 1, certication II 2G Ex d IIC T1-T6 Gb
The ameproof housing or connection head is located in zone 1 (or zone 2). The
sensor is inside a thermowell (made of corrosion-resistant steel, wall thickness at
least 1 mm) which extends into the zone 1 via a process connection.
In this case, no power limitation is required since no possible source of error is
applied for the evaluation electronics.

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7. Notes regarding the safety of the dierent versions
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W12
7.1.2 Use at the partition to zone 0, certication II 1/2G Ex d IIC T1-T6 Ga/Gb
The ameproof housing or connection head is located in zone 1 (or zone 2). The
sensor is inside a thermowell (made of corrosion-resistant steel, wall thickness at
least 1 mm) which extends into zone 0 via a process connection.
Therefore, power limitation circuit must be used for the thermometer.
Pmax.: 2 W Umax.: 30 V
A supply provided by an Ex-ia electrical circuit fulls this requirement, but is not
necessary if the limitation can be reached through other measures. The user is
responsible for this.
7.1.3 Temperature classes, ambient temperatures
For all WIKA connection heads, the following ambient temperature range is
applicable: -40 … +85 °C.
For the permissible ambient temperatures for products from other manufacturers,
please refer to the respective approvals or data sheets.
Self-heating of the connection head in Version 1 does not occur. However,
an inadmissible heat return from the process, which may exceed the housing
operating temperature or the temperature class, must be prevented by
appropriate thermal insulation or by using a longer neck tube.
7.2 Version 2:
ATEX/IECEx Ex-d housing or connection head with integral head-mounted
transmitter. The signal processing is made via a current (4 ... 20 mA), voltage
(2 ... 10 V) or eldbus signal generated by a head-mounted transmitter.
7.2.1 Use in zone 1, certication II 2G Ex d IIC T1-T6 Gb
The ameproof housing or connection head are located in zone 1 (or zone 2).
The sensor is inside a thermowell (made of corrosion-resistant steel, wall thick-
ness at least 1 mm) which extends into zone 1 via a process connection.
In this case, no power limitation is required since no possible source of error is
applied for the evaluation electronics.
7.2.2 Use at the transition to zone 0, certication II 1/2G Ex d IIC T1-T6 Ga/Gb
The ameproof housing or connection head is located in zone 1 (or zone 2). The
sensor is inside a thermowell (made of corrosion-resistant steel, wall thickness at
least 1 mm) which extends into zone 0 via a process connection.
Therefore, a power limitation circuit must be used for the thermometer.
Pmax: 2 W Umax: 30 V
A supply provided by an Ex-ia electrical circuits fulls this requirement but is not
necessary if the limitation can be reached through other measures.
The user is responsible for this.

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7. Notes regarding the safety for the dierent versions
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WIKA operating instructions models TR10-W, TC10-W 13
WIKA recommends the power of the head-mounted transmitter is limited by a
matched pre-fuse in the 4 ... 20 mA current loop. In case of a fault in the head-
mounted transmitter, the pre-fuse will trip and break the electric circuit.
Example to size the pre-fuse for a maximum power of 0.8 watts at the
sensor:
The internal resistance of thermocouples is considerably lower than the tempera-
ture-dependent resistance of a Pt100 sensor and therefore the more unfavourable
value for the resistance thermometer is calculated.
Padm = (1.7 x Is)² x Rw
Is = Rated current for fuse
Padm = maximum power at the sensor = 0.8 W
Rw = Sensor resistance (temperature dependent)
at 450 °C = 264.18 Ω per DIN EN 60 751 for Pt100.
The nominal current of the fuse is calculated as follows:
Is = sqrt (Padm / Rw) / 1.7
Is = sqrt (0.8 W / 265 Ω) / 1.7
Is = 32.32 mA
From this, a rated current for a miniature fuse/fast acting fuse = 32 mA is calculated.
Information regarding the fuse calculation:
Always chose the next smallest fuse value in accordance with IEC 60127. The
breaking capacity must be matched to the power supply in a technically sound
way. Usual values for such miniature fuse/fast acting fuses range between a
rated breaking capacity of AC 20 A and AC 80 A.
The following value results from the max. power at the sensor of 0.5 W:
Is = sqrt (0.5 W / 265 Ω) / 1.7
Is = 25.55 mA
From this, a rated current for a miniature fuse/fast acting fuse = 25 mA is calculated.
If multiple sensors are used simultaneously, the sum of the individual powers
must not exceed the value of the maximum allowed power.
Internal resistance of TC measuring inserts Ø 6 mm: approx. 1.2 Ω/m
Internal resistance of TC measuring inserts Ø 3 mm: approx. 5.6 Ω/m
The measured values apply to room temperature.
7.2.3 Temperature classes, ambient temperatures
Heating in the connection head with Version 2 can occur due to a failure in the
electronics. The permissible ambient temperatures depend on the housing used
and the additional integral head-mounted transmitters.

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7. Notes regarding the safety for the dierent versions
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W14
The following relationship exists between all WIKA connection heads and
the installed WIKA temperature transmitters:
The temperature rise on the surface of the connection head or the housing is
lower than 25 K if the following requirements are fullled: Operating voltage UB
maximum DC 30 V when the transmitter is operated in the current limiting range
of 22.5 mA.
Therefore, the following temperature classes are dened:
Temperature class Ambient temperature
T6 -40 … +55 °C
T5 -40 … +75 °C
T4, T3, T2, T1 -40 … +85 °C
For the permissible ambient temperatures for products from other manufactu-
rers, please refer to the respective approvals or data sheets. An inadmissible
heat return from the process which may exceed the operating temperature of the
transmitter or the housing, must be prevented by appropriate thermal insulation
or by using a longer neck tube.
7.3 Version 3:
Temperature transmitter approved according to ATEX/IECEx Ex-d.
The signal processing is made via a current (4 ... 20 mA), voltage (2 ... 10 V) or
eldbus signal which is generated by a temperature transmitter certied to ATEX/
IECEx Ex-d.
7.3.1 Use in zone 1, marking II 2G Ex d IIC Gb
The Ex-d eld transmitter is located in zone 1 (or zone 2). The sensor is
inside a thermowell (made of corrosion-resistant steel, wall thickness at least
1 mm) which extends into zone 1 via a process connection. In this case, no
power limitation is required since no possible source of error is applied for the
evaluation electronics.
The respective Ex certication can be found on the certed Ex-d eld transmitter.
The TR10-W and TC10-W cevices are marked with a foil label on the neck tube.
If it is to be inserted in a thermowell and mounted to a transition to zone 0, the
certications and the requirements of the respective Ex-d eld transmitter must
be observed.
7.3.2 Temperature classes, ambient temperatures
The following ambient temperature range is applicable for the measuring insert
with neck tube: -40 ... +85 °C.
For the permissible ambient temperatures of the approved Ex-de eld trans-
mitters, please refer to the respective operating instructions or data sheets.
Dierent temperature ranges may result in restrictions.

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8. Examples of calculations, self-heating of the sensor tip
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WIKA operating instructions models TR10-W, TC10-W 15
8. Examples of calculations, self-heating of the sensor tip
The self-heating at the thermowell tip depends on the sensor type (measuring
resistor/thermocouple), the measuring insert diameter and the design of the
thermowell. The following table indicates the possible combinations. The heating
at the sensor tip of the bare measuring insert is considerably higher; as it must
be combined with a thermowell, these values are not shown. The table shows
that the self-heating of thermocouples is considerably lower than the self-heating
of resistance thermometers.
Thermal resistance [Rth in °K/W]
Measuring insert diameter 3 mm 6 mm 3 mm 6 mm
Sensor type RTD RTD TC TC
With multipart thermowell
(straight and tapered)
(e.g. TW30, TW35, TW40)
60 37 15 5
With solid thermowell (straight and tapered)
(e.g. TW10, TW15, TW20, TW25, TW30)
22 16 10 3
Mounted in a pocket hole
(minimum wall thickness 5 mm)
22 16 10 3
8.1 Calculation example for version 2, resistance thermometer
Use at the transition to zone 0, certication II 1/2G Ex d IIC T1-T6, power
limitation circuit by means of a 32 mA pre-fuse.
The maximum possible temperature Tmax at the thermowell tip for the following
combination must be determined:
RTD measuring insert Ø 6 mm with integral head-mounted transmitter, mounted
in a solid thermowell.
Tmax results from the addition of the medium temperature and the self-heating.
The self-heating depends on the supplied power Po and the thermal resistance
Rth. The calculated supplied power Po results from the selected standard value
for the pre-fuse and is only active at the sensor tip.
Thus, the following formula applies: Tmax = Po x Rth + TM
Tmax = Surface temperature (max. temperature at the thermowell tip)
Po = 0.8 W (pre-fuse with 32 mA, a complete short circuit of the transmitter is
assumed)
Rth = Thermal resistance [K/W]
TM = Medium temperature

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8. Examples of calculations, ... / 9. Disposal
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W16
Example: Resistance thermometer
Diameter: 6 mm
Medium temperature: TM = 150 °C
Supplied power: Po = 0.8 W
Temperature class T3 (200 °C) must not be exceeded
Thermal resistance [Rth in K/W] from table = 16 °K/W
Self-heating: 0.8 W x 16 °K/W = 12.8 °K
Tmax = TM + self-heating: 150 °C + 12.8 °C = 162.8 °C
As a safety factor for type-tested devices (for T6 to T3), 5 °C must be deducted
from the 200 °C, therefore only 195 °C is allowed. Thus, in this case, the temper-
ature class T3 is not exceeded.
Additional information:
Temperature class for T3 = 200 °C
Safety factor for type-tested devices (for T6 to T3) *1 = 5 °K
Safety factor for type-tested devices (for T1 to T2) *1 = 10 °K
Safety factor for the use of the instrument Category 1 (zone 0) *2 = 80 % is not
applicable
*1 EN 60079-0 / EN 60079-1
*2 EN 60079-26
8.2 Calculation example for Version 2, thermocouple
Under the same conditions, there will be a lower value for the self-heating since
the supplied power is not only active at the sensor tip, but over the whole length
of the measuring insert.
Thermal resistance [Rth in K/W] from table = 3 °K/W
Self-heating: 0.8 W x 3 °K/W = 2.4 °K
Tmax = TM + self-heating: 150 °C + 2.4 °C = 152.4 °C
As a safety factor for type-tested devices (for T6 to T3), 5 °C must be deducted
from the 200 °C, therefore only 195 °C is allowed. Thus, in this case, the temper-
ature class T3 is not exceeded.
This example clearly shows that the self-heating can be ignored.
9. Disposal
Dispose of the device components and packaging materials in accordance with
the relevant country-specic waste treatment and disposal regulations of the
region.

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Appendix 1: EC prototype examination certicate
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W 17

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Appendix 1: EC prototype examination certicate
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W18

GB
Appendix 1: EC prototype examination certicate
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W 19

GB
Appendix 1: EC prototype examination certicate
14030069.01 12/2011 GB/D/F/E
WIKA operating instructions models TR10-W, TC10-W20