WIKA TR31-3 User manual

DE
EN
Operating instructions
Betriebsanleitung
Mode d’emploi
Manual de instrucciones
ES
FR
Model TR31-3 Model TR31-K
OEM miniature resistance thermometer
Models TR31-3, TR31-K
OEM-Miniatur-Widerstandsthermometer
Typen TR31-3, TR31-K
Sonde à résistance miniature OEM
Types TR31-3, TR31-K
Termorresistencia miniatura OEM
Modelo TR31-3, TR31-K
70018194

2
14096788.08 02/2022 EN/DE/FR/ES
WIKA operating instructions models TR31-3, TR31-K
DE
EN
ES
FR
Operating instructions model TR31 Page 3 - 36
Betriebsanleitung Typ TR31 Seite 37 - 70
Mode d'emploi type TR31 Page 71 - 104
Manual de instrucciones modelo TR31 Página 105 - 138
© 07/2014 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
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
3
Contents
Contents
Declarations of conformity can be found online at www.wika.com.
1. General information 4
2. Design and function 4
3. Safety 8
4. Transport, packaging and storage 12
5. Commissioning, operation 13
6. Conguration 18
7. CongurationsoftwareWIKAsoft-TT 20
8. Connecting PU-548 programming unit 22
9. Faults 23
10. Maintenance and cleaning 25
11. Dismounting, return and disposal 27
12. Specications 29
Appendix:CSAcontroldrawing 36

EN
14096788.08 02/2022 EN/DE/FR/ES
4WIKA operating instructions models TR31-3, TR31-K
1. General information
■
The resistance thermometer described in the operating instructions
has been designed and manufactured using state-of-the-art
technology. All components are subject to stringent quality and
environmental criteria during production. Our management systems
are certied to ISO 9001 and ISO 14001.
■
These operating instructions contain important information on
handling the instrument.Working safely requires that all safety
instructions and work instructions are observed.
■
Observe the relevant local accident prevention regulations and
general safety regulations for the instrument's range of use.
■
Skilled personnel must have carefully read and understood the
operating instructions prior to beginning any work.
■
Subject to technical modications.
■
Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: TE 60.31
- Application consultant: Tel.: [phone]
Fax: [phone]
[email protected]
2. Design and function
2.1 Description
The model TR31 resistance thermometer consists of a thermowell with
a xed process connection and is screwed directly into the process.
It is designed to be impact and vibration resistant and all electrical
components are protected against humidity (IP67 or IP69K). The
vibration resistance conforms to IEC 60751 (20 g, dependent on the
instrument version). The impact resistance of all versions meets the
requirements of IEC 60751.
1. General information / 2. Design and function

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
5
www.wika.com
D-63911 Klingenberg
ALEXANDER WIEGAND SE & Co. KG
All rights as well as rights to register patents and other property rights reserved. Any reproduction or disclosure only with authorization from WIKA.
Printed versions are not subject to change management and are not subject to update service and are not considered valid.
Alle Rechte sowie Rechte zur Anmeldung von Patenten und anderen Schutzrechten vorbehalten. Vervielfaeltigung und Weitergabe nur mit Genehmigung durch WIKA.
Ausgedruckte Versionen unterliegen nicht dem Aenderungsdienst und haben keinen Anspruch auf Aktualitaet.
by WIKA
1 2
A
B
345678
1234567
C
D
A
B
C
D
E
F
DEKLI1_EN_A3M_T01 13.02.2020
Surface texture
z
y
x
ISO 1302
- 63 16 41
Rin µm
Tol. ISO 2768 - mK
0,5
...6
±0,1
>6 >30 >120
...30 ...120 ...400
±0,2 ±0,3 ±0,5
z
mm
[inch]
Check indicator units
language
GER/ENG
SIZE ISO 14405 
ISO 8015
49 mm
[1,929 inch]
d
A
11 mm
[0,433 inch]
M12x1
19 mm
[0,748 inch]
L1
A 10 mm
[0,393 inch]
A N=55 mm
=[2,165 inch]
A
N (M
H
) = 70 mm
=[2,756 inch]
KLI-ZCHG TR33/34 drawing number
14069565.05
TR34
material scale modified 24.08.21 KNEISEK reference
1:1 24.08.21 THIESR
released UV/DR 08 sheets 1 / 3
raw nominal comments
part size
REVISION
CN105668 05
CN102164 04
CN095325 03
CN083374 02
28.02.13 01
first created
WENZELM2
28.02.2013
Workflow
Freigabe-08
Ohne Halsrohr Ohne Prozessanschluss Mit Klemmverschraubung Mit Halsrohr
Prozessanschluss mit zylindrischem Gewinde
14069565.05
SW22/27
Hex22/27
www.wika.com
D-63911 Klingenberg
ALEXANDER WIEGAND SE & Co. KG
All rights as well as rights to register patents and other property rights reserved. Any reproduction or disclosure only with authorization from WIKA.
Printed versions are not subject to change management and are not subject to update service and are not considered valid.
Alle Rechte sowie Rechte zur Anmeldung von Patenten und anderen Schutzrechten vorbehalten. Vervielfaeltigung und Weitergabe nur mit Genehmigung durch WIKA.
Ausgedruckte Versionen unterliegen nicht dem Aenderungsdienst und haben keinen Anspruch auf Aktualitaet.
by WIKA
1 2
A
B
345678
1234567
C
D
A
B
C
D
E
F
DEKLI1_EN_A3M_T01 13.02.2020
Surface texture
z
y
x
ISO 1302
- 63 16 41
Rin µm
Tol. ISO 2768 - mK
0,5
...6
±0,1
>6 >30 >120
...30 ...120 ...400
±0,2 ±0,3 ±0,5
z
mm
[inch]
Check indicator units
language
GER/ENG
SIZE ISO 14405 
ISO 8015
49 mm
[1,929 inch]
d
A
11 mm
[0,433 inch]
M12x1
19 mm
[ 0,748 inch]
L1
A10 mm
[0,393 inch]
A N=55 mm
=[2,165 inch]
A
N (M
H
) = 70 mm
=[2,756 inch]
KLI-ZCHG TR33/34 drawing number
14069565.05
TR34
material scale modified 24.08.21 KNEISEK reference
1:1 24.08.21 THIESR
released UV/DR 08 sheets 1 / 3
raw nominal comments
part size
REVISION
CN105668 05
CN102164 04
CN095325 03
CN083374 02
28.02.13 01
first created
WENZELM2
28.02.2013
Workflow
Freigabe-08
Ohne Halsrohr Ohne Prozessanschluss Mit Klemmverschraubung Mit Halsrohr
Prozessanschluss mit zylindrischem Gewinde
14069565.05
SW22/27
Hex22/27
www.wika.com
D-63911 Klingenberg
ALEXANDER WIEGAND SE & Co. KG
All rights as well as rights to register patents and other property rights reserved. Any reproduction or disclosure only with authorization from WIKA.
Printed versions are not subject to change management and are not subject to update service and are not considered valid.
Alle Rechte sowie Rechte zur Anmeldung von Patenten und anderen Schutzrechten vorbehalten. Vervielfaeltigung und Weitergabe nur mit Genehmigung durch WIKA.
Ausgedruckte Versionen unterliegen nicht dem Aenderungsdienst und haben keinen Anspruch auf Aktualitaet.
by WIKA
1 2
A
B
345678
1234567
C
D
A
B
C
D
E
F
DEKLI1_EN_A3M_T01 13.02.2020
Surface texture
z
y
x
ISO 1302
- 63 16 41
Rin µm
Tol. ISO 2768 - mK
0,5
...6
±0,1
>6 >30 >120
...30 ...120 ...400
±0,2 ±0,3 ±0,5
z
mm
[inch]
Check indicator units
language
GER/ENG
SIZE ISO 14405 
ISO 8015
49 mm
[1,929 inch]
d
A
11 mm
[0,433 inch]
M12x1
19 mm
[ 0,748 inch]
L1
A 10 mm
[0,393 inch]
A N=55 mm
=[2,165 inch]
A
N (M
H
) = 70 mm
=[2,756 inch]
KLI-ZCHG TR33/34 drawing number
14069565.05
TR34
material scale modified 24.08.21 KNEISEK reference
1:1 24.08.21 THIESR
released UV/DR 08 sheets 1 / 3
raw nominal comments
part size
REVISION
CN105668 05
CN102164 04
CN095325 03
CN083374 02
28.02.13 01
first created
WENZELM2
28.02.2013
Workflow
Freigabe-08
Ohne Halsrohr Ohne Prozessanschluss Mit Klemmverschraubung Mit Halsrohr
Prozessanschluss mit zylindrischem Gewinde
14069565.05
SW22/27
Hex22/27
www.wika.com
D-63911 Klingenberg
ALEXANDER WIEGAND SE & Co. KG
All rights as well as rights to register patents and other property rights reserved. Any reproduction or disclosure only with authorization from WIKA.
Printed versions are not subject to change management and are not subject to update service and are not considered valid.
Alle Rechte sowie Rechte zur Anmeldung von Patenten und anderen Schutzrechten vorbehalten. Vervielfaeltigung und Weitergabe nur mit Genehmigung durch WIKA.
Ausgedruckte Versionen unterliegen nicht dem Aenderungsdienst und haben keinen Anspruch auf Aktualitaet.
by WIKA
1 2
A
B
345678
1234567
C
D
A
B
C
D
E
F
DEKLI1_EN_A3M_T01 13.02.2020
Surface texture
z
y
x
ISO 1302
- 63 16 41
Rin µm
Tol. ISO 2768 - mK
0,5
...6
±0,1
>6 >30 >120
...30 ...120 ...400
±0,2 ±0,3 ±0,5
z
mm
[inch]
Check indicator units
language
GER/ENG
SIZE ISO 14405 
ISO 8015
49 mm
[1,929 inch]
d
A
11 mm
[0,433 inch]
M12x1
19 mm
[ 0,748 inch]
L1
A 10 mm
[0,393 inch]
A N=55 mm
=[2,165 inch]
A
N (M
H
) = 70 mm
=[2,756 inch]
KLI-ZCHG TR33/34 drawing number
14069565.05
TR34
material scale modified 24.08.21 KNEISEK reference
1:1 24.08.21 THIESR
released UV/DR 08 sheets 1 / 3
raw nominal comments
part size
REVISION
CN105668 05
CN102164 04
CN095325 03
CN083374 02
28.02.13 01
first created
WENZELM2
28.02.2013
Workflow
Freigabe-08
Ohne Halsrohr Ohne Prozessanschluss Mit Klemmverschraubung Mit Halsrohr
Prozessanschluss mit zylindrischem Gewinde
14069565.05
SW22/27
Hex22/27
Ensure that mechanical loads on the connector are minimised,
especially in case of increased ambient temperatures or strong vibration
loads.The electrical connection is made via an M12 x 1 circular
connector or via the directly connected cable.
An adapter for electrical connection with angular connector per
DIN EN 175301-803 is optionally available for the M12 x 1 circular
connector version.
2.2 Dimensions in mm
Process connection with parallel thread (or without process connection)
2. Design and function
14069565.05
without neck tube without
process
connection
with
compression
tting
with
neck tube
with direct cable
outlet
connecting cable
14097792.01

EN
14096788.08 02/2022 EN/DE/FR/ES
6WIKA operating instructions models TR31-3, TR31-K
Process connection with parallel thread (7/16-20 UNF-2A) and O-ring
2. Design and function
www.wika.com
D-63911 Klingenberg
ALEXANDER WIEGAND SE & Co. KG
All rights as well as rights to register patents and other property rights reserved. Any reproduction or disclosure only with authorization from WIKA.
Printed versions are not subject to change management and are not subject to update service and are not considered valid.
Alle Rechte sowie Rechte zur Anmeldung von Patenten und anderen Schutzrechten vorbehalten. Vervielfaeltigung und Weitergabe nur mit Genehmigung durch WIKA.
Ausgedruckte Versionen unterliegen nicht dem Aenderungsdienst und haben keinen Anspruch auf Aktualitaet.
by WIKA
1 2
A
B
345678
1234567
C
D
A
B
C
D
E
F
DEKLI1_EN_A3M_T01 13.02.2020
Surface texture
z
y
x
ISO 1302
- 63 16 41
Rin µm
Tol. ISO 2768 - mK
0,5
...6
±0,1
>6 >30 >120
...30 ...120 ...400
±0,2 ±0,3 ±0,5
z
mm
[inch]
Check indicator units
language
GER/ENG
SIZE ISO 14405 
ISO 8015
49mm
[1,929 inch]
d
M12x1
19
[ 0.748 inch]
A
N (MH) = 70 mm
=[2,756 inch]
N (MH) ≥65 mm
≥[2,559 inch]
A
A X
KLI-ZCHG TR33/34 drawing number
14069565.05
TR34
material scale modified 24.08.21 KNEISEK reference
1:1 24.08.21 THIESR
released UV/DR 08 sheets 2 / 3
raw nominal comments
part size
REVISION
CN105668 05
CN102164 04
CN095325 03
CN083374 02
28.02.13 01
first created
WENZELM2
28.02.2013
Workflow
Freigabe-08
Prozessanschluss mit konischem Gewinde
Ohne Halsrohr
14069565.05
Mit Klemmverschraubung Mit Halsrohr
SW22/27
Hex22/27
49 mm
[1.929 inch]
Ø19mm
[Ø 0.748 inch]
A
A
Ohne Halsrohr Mit Klemmverschraubung Mit Halsrohr
Prozessanschluss mit zylindrischem Gewinde (7/16-20 UNF-2A)
14069565.05
11 mm
[0.433 inch]
A
M12x1
N=55 mm
=[2.165 inch]
N(MH)=70 mm
=[2.755 inch]
Ød
O-Ring 9,25x1,78
Material: FKM 75
L1
SW22/27
Hex22/27
The FKM O-ring must be protected from temperatures lower than -20 °C [-4 °F] and
higher than 125 °C [257 °F].
14069565.05
without neck tube with compression
tting
with neck tube

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
7
Process connection with tapered thread
2. Design and function
49 mm
[1.929 inch]
Ø19mm
[Ø 0.748 inch]
A
A
Ohne Halsrohr Mit Klemmverschraubung Mit Halsrohr
Prozessanschluss mit zylindrischem Gewinde (7/16-20 UNF-2A)
14069565.05
11 mm
[0.433 inch]
A
M12x1
N=55 mm
=[2.165 inch]
N(MH)=70 mm
=[2.755 inch]
Ød
O-Ring 9,25x1,78
Material: FKM 75
L1
SW22/27
Hex22/27
www.wika.com
D-63911 Klingenberg
ALEXANDER WIEGAND SE & Co. KG
All rights as well as rights to register patents and other property rights reserved. Any reproduction or disclosure only with authorization from WIKA.
Printed versions are not subject to change management and are not subject to update service and are not considered valid.
Alle Rechte sowie Rechte zur Anmeldung von Patenten und anderen Schutzrechten vorbehalten. Vervielfaeltigung und Weitergabe nur mit Genehmigung durch WIKA.
Ausgedruckte Versionen unterliegen nicht dem Aenderungsdienst und haben keinen Anspruch auf Aktualitaet.
by WIKA
1 2
A
B
345678
1234567
C
D
A
B
C
D
E
F
DEKLI1_EN_A3M_T01 13.02.2020
Surface texture
z
y
x
ISO 1302
- 63 16 41
Rin µm
Tol. ISO 2768 - mK
0,5
...6
±0,1
>6 >30 >120
...30 ...120 ...400
±0,2 ±0,3 ±0,5
z
mm
[inch]
Check indicator units
language
GER/ENG
SIZE ISO 14405 
ISO 8015
49mm
[1,929 inch]
d
M12x1
19
[ 0.748 inch]
A
N (MH) = 70 mm
=[2,756 inch]
N (MH) ≥65 mm
≥[2,559 inch]
A
A X
KLI-ZCHG TR33/34 drawing number
14069565.05
TR34
material scale modified 24.08.21 KNEISEK reference
1:1 24.08.21 THIESR
released UV/DR 08 sheets 2 / 3
raw nominal comments
part size
REVISION
CN105668 05
CN102164 04
CN095325 03
CN083374 02
28.02.13 01
first created
WENZELM2
28.02.2013
Workflow
Freigabe-08
Prozessanschluss mit konischem Gewinde
Ohne Halsrohr
14069565.05
Mit Klemmverschraubung Mit Halsrohr
SW22/27
Hex22/27
www.wika.com
D-63911 Klingenberg
ALEXANDER WIEGAND SE & Co. KG
All rights as well as rights to register patents and other property rights reserved. Any reproduction or disclosure only with authorization from WIKA.
Printed versions are not subject to change management and are not subject to update service and are not considered valid.
Alle Rechte sowie Rechte zur Anmeldung von Patenten und anderen Schutzrechten vorbehalten. Vervielfaeltigung und Weitergabe nur mit Genehmigung durch WIKA.
Ausgedruckte Versionen unterliegen nicht dem Aenderungsdienst und haben keinen Anspruch auf Aktualitaet.
by WIKA
1 2
A
B
345678
1234567
C
D
A
B
C
D
E
F
DEKLI1_EN_A3M_T01 13.02.2020
Surface texture
z
y
x
ISO 1302
- 63 16 41
Rin µm
Tol. ISO 2768 - mK
0,5
...6
±0,1
>6 >30 >120
...30 ...120 ...400
±0,2 ±0,3 ±0,5
z
mm
[inch]
Check indicator units
language
GER/ENG
SIZE ISO 14405 
ISO 8015
49mm
[1,929 inch]
d
M12x1
19
[ 0.748 inch]
A
N (MH) = 70 mm
=[2,756 inch]
N (MH) ≥65 mm
≥[2,559 inch]
A
A X
KLI-ZCHG TR33/34 drawing number
14069565.05
TR34
material scale modified 24.08.21 KNEISEK reference
1:1 24.08.21 THIESR
released UV/DR 08 sheets 2 / 3
raw nominal comments
part size
REVISION
CN105668 05
CN102164 04
CN095325 03
CN083374 02
28.02.13 01
first created
WENZELM2
28.02.2013
Workflow
Freigabe-08
Prozessanschluss mit konischem Gewinde
Ohne Halsrohr
14069565.05
Mit Klemmverschraubung Mit Halsrohr
SW22/27
Hex22/27
At a process temperature of > 150 °C [302 °F], a neck length N (MH) of 70 mm [2.76 in] is
necessary, otherwise N (MH) selectable (55 mm [2.17 in], 65 mm [2.56 in] or 70 mm [2.76 in]).
Legend:
A (U1) Insertion length (parallel thread)
A (U2) Insertion length (tapered thread)
N (MH)Neck length
Ød Sensor diameter
W Length of the directly connected cable
L Length of the free stranded wires
X Height process connection
1/4 NPT = 15 mm [0.59 in]
1/2 NPT = 19 mm [0.75 in]
without neck tube with compression
tting
with neck
tube
with direct cable
outlet
Connection lead
14069565.0514097792.01

EN
14096788.08 02/2022 EN/DE/FR/ES
8WIKA operating instructions models TR31-3, TR31-K
2.3 Scope of delivery
Cross-check scope of delivery with delivery note.
3. Safety
3.1 Explanationofsymbols
WARNING!
... indicates a potentially dangerous situation that can result in
serious injury or death, if not avoided.
CAUTION!
... indicates a potentially dangerous situation that can result in
light injuries or damage to property or the environment, if not
avoided.
DANGER!
... identies hazards caused by electric power. Should the
safety instructions not be observed, there is a risk of serious
or fatal injury.
WARNING!
... indicates a potentially dangerous situation that can result in
burns, caused by hot surfaces or liquids, if not avoided.
Information
... points out useful tips, recommendations and information for
ecient and trouble-free operation.
3.2 Intendeduse
The model TR31 resistance thermometer is used as a general-purpose
thermometer for the measurement of temperatures from -50 … +150 °C
[-58 ... +302 °F] (without neck tube) and -50 … +250 °C [-58 ... +482 °F]
(with neck tube) in liquid and gaseous media. The version with mineral-
insulated sheathed cable and neck tube allows to measure temperatures
2. Design and function / 3. Safety

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
9
up to 300 °C [572 °F]. It can be used for pressures up to 140 bar
[2,030 psi] with 3 mm [0.12 in] sensor diameters and up to 270 bar
[3,916 psi] with 6 mm [0.24 in] sensor diameters, dependent on the
instrument version.
The instrument has been designed and built solely for the intended use
described here, and may only be used accordingly.
The technical specications contained in these operating instructions
must be observed. Improper handling or operation of the instrument
outside of its technical specications requires the instrument to be taken
out of service immediately and inspected by an authorised WIKA service
engineer.
The manufacturer shall not be liable for claims of any type based on
operation contrary to the intended use.
3.3 Responsibility of the operator
The system operator is responsible for selecting the thermometer
or protection tube, and for the selection of their materials, so as to
guarantee their safe operation within the plant or machine.When
preparing a quote, WIKA can only give recommendations which are
based on our experience in similar applications.
The safety instructions within these operating instructions, as well as the
safety, accident prevention and environmental protection regulations for
the application area must be maintained.
The operator is obliged to maintain the product label in a legible
condition.
3. Safety

EN
14096788.08 02/2022 EN/DE/FR/ES
10 WIKA operating instructions models TR31-3, TR31-K
3.4 Personnelqualication
WARNING!
Riskofinjuryshouldqualicationbeinsucient!
Improper handling can result in considerable injury and
damage to property.
▶
The activities described in these operating instructions
may only be carried out by skilled personnel who have the
qualifications described below.
▶
Keep unqualified personnel away from hazardous areas.
Skilled electrical personnel
Skilled electrical personnel are understood to be personnel who, based
on their technical training, know-how and experience as well as their
knowledge of country-specic regulations, current standards and directives,
are capable of carrying out work on electrical systems and independently
recognising and avoiding potential hazards.The skilled electrical personnel
have been specically trained for the work environment they are working
in and know the relevant standards and regulations.The skilled electrical
personnel must comply with current legal accident prevention regulations.
Special operating conditions require further appropriate knowledge, e.g.
of aggressive media.
3. Safety

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
11
3.5 Labelling, safety marks
Productlabel(example)
Model
Date of manufacture (Year-Month)
Approval logos
Information on version (measuring element, output signal, measuring range...)
■
Thermometer with transmitter and 4 ... 20 mA output signal
■
Thermometer with direct sensor output with Pt100 and Pt1000
Serial number, TAG no.
Before mounting and commissioning the instrument,
ensure you read the operating instructions!





3. Safety

EN
14096788.08 02/2022 EN/DE/FR/ES
12 WIKA operating instructions models TR31-3, TR31-K
4. Transport, packaging and storage
4.1 Transport
Check the instrument for any damage that may have been caused by
transport. Obvious damage must be reported immediately and damaged
instruments must not be used.
CAUTION!
Damage through improper transport
With improper transport, a high level of damage to property
can occur.
▶
When unloading packed goods upon delivery as well as
during internal transport, proceed carefully and observe
the symbols on the packaging.
▶
With internal transport, observe the instructions in chapter
4.2 “Packaging and storage”.
If the instrument is transported from a cold into a warm environment, the
formation of condensation may result in instrument malfunction. Before
putting it back into operation, wait for the instrument temperature and the
room temperature to equalise.
4.2 Packaging and storage
Do not remove packaging until just before mounting.
Keep the packaging as it will provide optimum protection during transport
(e.g. change in installation site, sending for repair).
Permissibleconditionsattheplaceofstorage:
■
Storage temperature:
- M12 x 1, 4-pin circular connector: -40 ... +85 °C [-40 ... +185 °F]
- Directly connected cable: -20 ... +80 °C [-4 ... +176 °F]
■
Humidity: 5 ... 95 % r. h.
Avoidexposuretothefollowingfactors:
■
Direct sunlight or proximity to hot objects
■
Mechanical vibration, mechanical shock (putting it down hard)
■
Soot, vapour, dust and corrosive gases
■
Potentially explosive environments, ammable atmospheres
4. Transport, packaging and storage

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
13
Store the instrument in its original packaging in a location that fulls the
conditions listed above. If the original packaging is not available, pack
and store the instrument as described below:
1. Wrap the instrument in an antistatic plastic lm.
2. Place the instrument along with shock-absorbent material in the
packaging.
3. If stored for a prolonged period of time (more than 30 days), place a
bag containing a desiccant inside the packaging.
5. Commissioning, operation
WARNING!
Avoid putting any mechanical loading on the electrical
connections and on the enclosures. Connections must only
be opened once the instrument has been depressurised and
has cooled down.
Maximumpermissibletemperatures:
At case with transmitter: 85 °C [185 °F]
With directly connected cable: -20 ... +80 °C [-4 ... +176 °F]
Class A:
Without neck tube -30 ... +150 °C [-22 ... +302 °F]
With neck tube -30 ... +250 °C [-22 ... +482 °F] 1)
Class B:
Without neck tube -50 ... +150 °C [-58 ... +302 °F]
With neck tube -50 ... +250 °C [-58 ... +482 °F] 1)
1) Version with mineral-insulated sheathed cable can be used up to 300 °C [572 °F].
5.1 Mounting
These resistance thermometers are designed for screw-tting directly
into the process. The insertion length, along with the ow velocity and
viscosity of the process media, may reduce the max. loading on the
thermowell.
The housing must be grounded against electromagnetic elds and
electrostatic discharge. It is not necessary to connect the housing
4. Transport ... / 5. Commissioning, operation

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14 WIKA operating instructions models TR31-3, TR31-K
separately to the equipotential bonding system, provided that it has a
xed and secure contact to the metallic vessel, its components or pipes,
and that these are connected to the equipotential bonding system.
When there is a non-metallic contact with the vessel, or with its
structural components or piping, the instrument must be provided with
equipotential bonding.
WARNING!
Neither repairs nor structural modications are permitted,
and any would void the guarantee.
Installationexamples
For information on tapped holes, refer to DIN 3852 or for NPT threads to
ANSI B 1.20.
Installation on pipes
a on elbows
b in smaller pipe, inclined
c perpendicular to ow direction
Insertion length A
5. Commissioning, operation

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
15
5. Commissioning, operation
5.1.1 Tighteningtorquesforcompressionttings
Sealing Turns Max.pressureinbar
Stainless steel ferrule 1 ¼ ... 1 ½ 100
Stainless steel compression ring 1 ¼ ... 1 ½ 100
PTFE ferrule 1 ¼ ... 1 ½ 8
5.1.2 Tightening torque for M12 mating connector or M12 adapter
Choose a tightening torque of 0.6 Nm.
5.2 Electrical connection
The electrical connection is made via a circular connector.
■
Output signal Pt100 and Pt1000 (standard)
M12 x 1 circular connector (4-pin) Directly connected cable
2-wire
red
white
white
white
white
red
red
red
red
3-wire
4-wire
mA
4 ... 20 mA
M12x1connector Angularconnector
Accessories:M12x1PtadaptertoDINEN175301-803angularconnector
Alternative pin assignments possible.
For further information see order documentation.

EN
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16 WIKA operating instructions models TR31-3, TR31-K
■
Output signal 4 ... 20 mA (standard)
brown
blue
M12 x 1 circular connector (4-pin) Directly connected cable
M12x1connector Angularconnector
mA
4 ... 20 mA
Accessories:M12x1transmitteradaptertoDINEN175301-803
angular connector
Pin assignment angular connector
Pin Signal Description
1L+ 10 ... 30 V
2VQ not connected
3L- 0 V
4C not connected
Pin Signal Description
1L+ 10 ... 30 V
2L- 0 V
3VQ not connected
4C not connected
Wire Signal Description
Brown L+ 10 ... 30 V
Blue L- 0 V
Alternative pin assignments possible.
For further information see order documentation.
5. Commissioning, operation

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
17
DANGER!
Danger to life caused by electric current
Upon contact with live parts, there is a direct danger to life.
■
The instrument may only be installed and mounted by
skilled personnel.
■
Operation using a defective power supply unit (e.g. short-
circuit from the mains voltage to the output voltage) can
result in life-threatening voltages at the instrument!
■
Carry out mounting work only with power disconnected.
This is protection class 3 equipment for connection at low voltages,
which are separated from the power supply or voltages of greater than
AC 50 V or DC 120 V. Preferably, a connection to an SELV or PELV circuit
is recommended; alternatively protective measures from HD 60346-4-41
(DIN VDE 0100-410).
AlternativelyforNorthAmerica
The connection can be made in line with “Class 2 Circuits” or “Class 2
Power Units” in accordance with CEC (Canadian Electrical Code) or
NEC (National Electrical Code).
Load diagram
The permissible load depends on the loop supply voltage. For
communication with the instrument with programming unit PU-548, a
max. load of 350 Ω is admissible.
RA ≤ (UB - 10 V) / 23 mA with RA in Ω and UBin V
0 10 24 30 36
1083
833
583
Voltage UBin V
Load RA in Ω
5. Commissioning, operation

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18 WIKA operating instructions models TR31-3, TR31-K
5.3 Behaviouroftheelectricaloutputsignal4...20mA
■
Sensor break and short-circuit
Sensor break or short-circuit are signalled after positive detection
(after approx. 1 second). If this fault condition has been caused by
a malfunction, then a relevant measurement signal must exist for
approx. 1 second in order to return to measuring mode. From the time
of the error detection up to the fault signal, the last relevant measured
value will be delivered on the current loop.
Therefore, in the event of a “true” sensor break or short-circuit, this
is also signalled permanently. In the event of a “false” sensor break
or short-circuit, the transmitter has the possibility of reverting to
measuring mode.
■
Medium temperature outside the span
If the media temperature congured in the transmitter exceeds, an
error will be signalled.
6. Conguration
Conguration is carried out via a USB interface with a PC via the
model PU-548 programming unit (accessories, order no. 14231581). The
connection with the thermometer is made via the appropriate adapter
cable.
■
Accessories, M12 x 1 circular connector: order number 14003193
■
Accessories, crocodile clips for bare-end connecting wires:
order number 14097967
5.Commissioning,operation/6.Conguration

EN
WIKA operating instructions models TR31-3, TR31-K
14096788.08 02/2022 EN/DE/FR/ES
19
Measuring range, damping, fault signal, TAG no. and other parameters
can be adjusted (see conguration software).
The measuring range is congurable between -50 ... +250 °C
[-58 ... +482 °F]. The conguration software checks the required
measuring range and will only accept permissible values. Intermediate
values are congurable; the smallest increment is 0.1 °C or 0.1 °F. The
thermometers are delivered congured to customer specications within
the congurable limits.
Pleasenote:
The measuring range of the thermometer is limited by the application
range of the measuring element, not by the setting range of the
transmitter.
Maximumpermissibletemperatures:
■
At case with transmitter: 85 °C [185 °F]
■
With directly connected cable: -20 ... +80 °C [-4 ... +176 °F]
■
Class A:
Without neck tube -30 ... +150 °C [-22 ... +302 °F]
With neck tube -30 ... +250 °C [-22 ... +482 °F] 1)
■
Class B:
Without neck tube -50 ... +150 °C [-58 ... +302 °F]
With neck tube -50 ... +250 °C [-58 ... +482 °F] 1)
1) Version with mineral-insulated sheathed cable can be used up to 300 °C [572 °F].
■
Easy to use
■
LED status display
■
Compact version
■
No further power supply is needed for
either the programming unit or for the
transmitter
(replaces programming unit model PU-448)
6.Conguration

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20 WIKA operating instructions models TR31-3, TR31-K
7. CongurationsoftwareWIKAsoft-TT
For installation please follow the instructions of the installation routine.
7.1 Startingthesoftware
Start the conguration software by double-clicking on the WIKAsoft-TT
icon.
After starting the software, the
language can be changed, via
the selection of the appropriate
country‘s ag.
The selection of the COM port is
made automatically.
After the connection of a transmitter
(using the PU-548), on pressing the
“Start” button, the conguration interface is loaded.
The conguration interface can only be loaded when an
instrument is connected.
7.CongurationsoftwareWIKAsoft-TT