WIKA TGU73.100 User manual
DE
EN
Operating instructions
Betriebsanleitung
Gas-actuated thermometer, model TGU73.100
Gas-actuated thermometer for connection to
WIKA radio unit, model TGU73.100
Gasdruckthermometer zum Anschluss an WIKA-
Funkeinheit, Typ TGU73.100
DE
EN
14602074.02 07/2023 EN/DE
© 06/2023 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!
Operating instructions model TGU73.100 Page 3 - 52
Betriebsanleitung Typ TGU73.100 Seite 53 - 103
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WIKA operating instructions gas-actuated thermometer, model TGU73.100
EN
14602074.02 07/2023 EN/DE
Contents
1. General information 5
1.1 Abbreviations, definitions . . . . . . . . . . . 7
1.2 Explanations of symbols. . . . . . . . . . . . 7
2. Short overview and product pass 8
2.1 Overview . . . . . . . . . . . . . . . . . 8
2.2 Description . . . . . . . . . . . . . . . . 8
2.3 Scope of delivery . . . . . . . . . . . . . .10
2.4 Product pass . . . . . . . . . . . . . . .10
3. Safety 11
3.1 Intended use. . . . . . . . . . . . . . . .11
3.2 Improper use . . . . . . . . . . . . . . .14
3.3 Responsibility of the operator . . . . . . . . . .15
3.4 Personnel qualification . . . . . . . . . . . .16
3.5 Personal protective equipment . . . . . . . . .17
3.6 Labelling, safety marks . . . . . . . . . . . .18
3.7 Ex marking . . . . . . . . . . . . . . . .20
3.8 Specifications and temperature limits . . . . . . .21
3.9 Special conditions of use (X conditions) . . . . . .22
3.10 Certified WIKA radio unit, model NETRIS®3. . . . .24
4. Transport, packaging and storage 24
4.1 Transport . . . . . . . . . . . . . . . . .24
4.2 Packaging and storage . . . . . . . . . . . .25
5. Commissioning, operation 26
5.1 Mechanical connection . . . . . . . . . . . .27
5.2 Electrical connection . . . . . . . . . . . . .30
5.3 Commissioning . . . . . . . . . . . . . . .31
5.4 Use of thermowells/protection tubes. . . . . . . .32
5.5 Thermal contact medium . . . . . . . . . . .33
5.6 Mounting instructions for contact bulb . . . . . . .33
5.7 Mounting on pipes . . . . . . . . . . . . . .34
5.8 Mounting on tanks . . . . . . . . . . . . . .34
6. Faults 35
Contents
4WIKA operating instructions gas-actuated thermometer, model TGU73.100
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14602074.02 07/2023 EN/DE
7. Maintenance, cleaning and calibration 38
7.1 Maintenance. . . . . . . . . . . . . . . .38
7.2 Cleaning . . . . . . . . . . . . . . . . .39
7.3 Calibration . . . . . . . . . . . . . . . .40
8. Dismounting, return and disposal 40
8.1 Dismounting . . . . . . . . . . . . . . . .41
8.2 Return . . . . . . . . . . . . . . . . . .42
8.3 Disposal . . . . . . . . . . . . . . . . .43
9. Specifications 44
10. Accessories 52
Annex : EU declaration of conformity 53
Contents
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WIKA operating instructions gas-actuated thermometer, model TGU73.100
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14602074.02 07/2023 EN/DE
1. General information
■The instrument 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 certified in
accordance with 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.
■The operating instructions are part of the product and must be kept
in the immediate vicinity of the instrument and readily accessible to
skilled personnel at any time. Pass the operating instructions on to
the next operator or owner of the instrument.
■Skilled personnel must have carefully read and understood the
operating instructions prior to beginning any work.
■In this document, the generic masculine is used for better readabili-
ty. Female and other gender identities are explicitly included.
■The general terms and conditions contained in the sales documen-
tation shall apply.
Supplementary documentation:
▶Please follow all the documentation included in delivery.
Before commissioning the instrument, the operating
instructions for the WIKA model NETRIS®3 radio unit,
article number 14521664, must also be observed!
1. General information
6WIKA operating instructions gas-actuated thermometer, model TGU73.100
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14602074.02 07/2023 EN/DE
■Subject to technical modifications.
■Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: TV 17.13
- Additional documentation: Special documentation LoRaWAN®
communication specification, article
number 14618597
- Contact: Tel.: +49 9372 132-0
1. General information
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WIKA operating instructions gas-actuated thermometer, model TGU73.100
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1.1 Abbreviations, definitions
■Bullet
▶Instruction
1. ... x. Follow the instruction step by step
⇒Result of an instruction
→See ... cross-references
UWI Unified WIKA Interface
1.2 Explanations of symbols
DANGER!
... indicates a directly dangerous situation resulting 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!
... indicates a potentially dangerous situation in the hazard-
ous area that can result in serious injury or death, if not
avoided.
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 efficient and trouble-free operation.
1. General information
8WIKA operating instructions gas-actuated thermometer, model TGU73.100
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14602074.02 07/2023 EN/DE
2. Short overview and product pass
2.1 Overview
1Case
2Dial
3Sensor PCB
4Stem
5Radio unit, model NETRIS®3, for connection type: Angular connector
→ See operating instructions of model NETRIS®3
6NETRIS®3 plug connection for angular connectors
7Pointer
2.2 Description
Through its modular structure, the model TGU73.100 gas-actuated
thermometer is designed for operation with the model NETRIS®3 radio
unit.
The gas-actuated thermometer consists of a stem, capillary, bourdon
tube and transmitter in the case.These parts are combined to form a
single unit.The entire measuring system is filled with an inert gas under
pressure.
2. Short overview and product pass
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WIKA operating instructions gas-actuated thermometer, model TGU73.100
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14602074.02 07/2023 EN/DE
Any change in temperature causes a change in internal pressure in the
stem, and thus a change in the shape of the pressure element.
This motion is converted, via a mechanical movement, into a rotational
motion. A magnet on the pointer shaft rotates proportionally to the
instrument pointer as a direct linear function of the process tempera-
ture.
The angle sensor contained in the transmitter electronics measures
the rotational motion of the magnet in the range 0 ... 270°. The change
in angle is recorded contact-free, and therefore wear-free, and further
processed into a digital signal, which is transmitted to the model
NETRIS®3 radio unit.The radio unit ensures the intrinsically safe
voltage supply for the TGU73.100 gas-actuated thermometer and
ensures the transmission of the measured data based on LPWAN
technology ("Low Power Wide Area Network").
The measurement and sending intervals, and also the alarm limits, for
particular measured values can be configured over the IIoT platform.
→ For details on the alarm configuration, see Special documentation for
LoRaWAN®communication specification, model TGU73.100.
Variations in the ambient temperature acting on the case are compen-
sated for by a bimetal element mounted between the movement and
the measuring tube.
The mechanical on-site indication works completely autonomously, i.e.
battery-independent.
Accuracy class
After tapping on the case, the indication meets accuracy class 2.0 in
accordance with EN 13190.
Ex version
The model TGU73.100 is suitable for use in hazardous areas.
2. Short overview and product pass
10 WIKA operating instructions gas-actuated thermometer, model TGU73.100
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2.3 Scope of delivery
■Gas-actuated thermometer for connection to WIKA radio unit
■Operating instructions for gas-actuated thermometers for connec-
tion to the WIKA NETRIS®3 radio unit, model TGU73.100
■Protective cap for plug connection
■Seal in plug connection for angular connector (inserted)
Cross-check scope of delivery with delivery note.
2.4 Product pass
The product pass is a web application where various informa-
tion about an instrument can be retrieved by entering the 11-digit
alphanumeric serial number. This includes, for example, instrument
configuration, article number, operating instructions, data sheet or
calibration certificates.The product pass can be retrieved from the
product page or directly from the corresponding web application
(https://portal.wika.com/serial/).
Web application
2. Short overview and product pass
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WIKA operating instructions gas-actuated thermometer, model TGU73.100
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3. Safety
3.1 Intended use
WARNING!
Damage to property due to incorrect temperature of
use
Temperatures outside the application range can lead to
irreversible damage to the measuring instrument.
▶The temperatures of the application range must not be
exceeded at any time, not even when faults occur in the
end application.
The model TGU73.100 thermometer combines a mechanical measu-
ring system with electronic signal processing and is prepared for
connection to the WIKA model NETRIS®3 radio unit. The instru-
ment is used for measuring temperature in hazardous areas of
industrial applications. For the operation of TGU73.100 the use of a
thermowell/protection tube is necessary.
The model TGU73.100 thermometer in combination with the model
NETRIS®3 radio unit is used wherever web-based remote monitoring
of the process temperature is desired in addition to on-site indication.
In addition to the temperature value of the process, the instrument
temperature is also transmitted digitally.
Due to the position of the temperature probe, which is
located on the sensor circuit board in the thermometer
case, the instrument temperature is influenced by the
ambient and the process temperature.
The instrument has been designed and built solely for the intended use
described here, and may only be used accordingly.
3. Safety
12 WIKA operating instructions gas-actuated thermometer, model TGU73.100
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Only use the instrument in applications that lie within its technical
performance limits (e.g. temperature limits, material compatibility, etc.).
The technical specifications of the enclosed operating instructions
and the operating instructions for the NETRIS®3 radio unit must be
observed. Improper handling or operation of the instrument outside
of its technical specifications requires the instrument to be taken out
of service immediately and inspected by an authorised WIKA service
engineer. If the performance limits are exceeded (e.g. EN 13190 limits)
or if there are visible changes to the instrument, it must be replaced.
→For performance limits, see chapter 9 “Specifications”
The operator of the plant in which the product is used must ensure the
compatibility of the materials of the wetted parts with the medium used.
The instrument must only be used with media which are not harmful
to the wetted parts over the entire range of use of the instrument. Any
change in the state of the matter or any decomposition of unstable
media is not permitted.
The manufacturer shall not be liable for claims of any type based on
operation contrary to the intended use.
Certificates and applied standards
EU-type examination certificate IECEx certificate
BVS 20 ATEX E 099 X IECEx BVS 22.0036X
EN IEC 60079-0 IEC 60079-0
EN 60079-11 IEC 60079-11
Assembly
For the application limits of the assembly, compliance with the speci-
fications of the WIKA radio unit and the specifications of the model
TGU73.100 is required.The permissible ambient temperature range of
the assembly is determined by the instrument with the lowest temper-
ature range.
3. Safety
13
WIKA operating instructions gas-actuated thermometer, model TGU73.100
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The TGU73.100 thermometer is certified for use in areas that require
EPL Gb (zone 1).The NETRIS®3 radio unit is certified for use in areas
that require EPL Ga (zone 0). The assembly of these two instruments
may only be operated in areas that require EPL Gb (zone 1).
The remote monitoring of the process temperature via radio transmis-
sion is only suitable for non-critical and non-safety-relevant applica-
tions.
The remote monitoring function must not be used for
control purposes, as it cannot be guaranteed that data
packets won't be lost during radio transmission.
3. Safety
14 WIKA operating instructions gas-actuated thermometer, model TGU73.100
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3.2 Improper use
DANGER!
Injuries through improper use
Improper use of the instrument can lead to hazardous
situations and injuries.
▶Refrain from unauthorised modifications to the instru-
ment.
▶Do not use the instrument with abrasive or viscous
media.
WARNING!
Changes to the instrument
Changes to the instrument can lead to hazardous situations
and injuries.
▶Refrain from unauthorised modifications or changes to
the instrument.
▶The instrument must only be used for the usage
described here.
▶Only use the approved radio unit, see chapter
3.10 “Certified WIKA radio unit, model NETRIS®3”.
▶The maximum cable length of 3 metres to the radio unit
must be observed.
Any use beyond or different to the intended use is considered as
improper use.
Do not use this instrument in safety or emergency shutdown devices
(safety accessory).
The instrument temperature, which is output digitally, is a mixture of
ambient and process temperature and is therefore not suitable for an
exact temperature determination.
If the lower scale value or full scale value are exceeded, then the
digitally transmitted value is no longer reliable.
3. Safety
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WIKA operating instructions gas-actuated thermometer, model TGU73.100
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Protection against external impact
Avoid any kind of external impact. External impacts can generate
sparks through friction processes between different materials.
Explosive atmosphere consisting of hybrid mixtures
The instruments must not be used in areas in which an atmosphere
consisting of explosive hybrid mixtures (dusts mixed with gases) can
occur.
Handling of materials
Avoid exposing the instrument to any substances or ambient conditions
that could negatively affect the instrument and the materials used.
Avoid handling substances that are liable to spontaneous combustion.
For a list of the materials used, see chapter 9 “Specifications”.
3.3 Responsibility of the operator
The instrument is used in the industrial sector. The operator is therefore
responsible for legal obligations regarding safety at work.
The safety instructions within these operating instructions, as well as
the safety, accident prevention and environmental protection regula-
tions for the application area must be maintained.
The operator is obliged to maintain the product label in a legible
condition.The legibility of the marking must be observed during time
in use but at least during inspection periods of three years. If any harm
of the legibility is found please contact the manufacturer to renew the
marking.
3. Safety
16 WIKA operating instructions gas-actuated thermometer, model TGU73.100
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To ensure safe working on the instrument, the operating company must
ensure
■that suitable first-aid equipment is available and aid is provided
whenever required.
■that the operating personnel are regularly instructed in all topics
regarding work safety, first aid and environmental protection and
know the operating instructions and in particular, the safety instruc-
tions contained therein.
■that the instrument is suitable for the particular application in
accordance with its intended use.
■that the requisite personal protective equipment is provided.
For the safety of the system, the operator is obliged to carry out an
ignition source analysis. The responsibility for classification of zones
lies with the plant manager and not the manufacturer/supplier of the
equipment.
3.4 Personnel qualification
WARNING!
Risk of injury should qualification be insufficient
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.
Skilled personnel
Skilled personnel, authorised by the operator, are understood to
be personnel who, based on their technical training, knowledge of
measurement and control technology and on their experience and
knowledge of country-specific regulations, current standards and direc-
tives, are capable of carrying out the work described and independent-
ly recognising potential hazards.
3. Safety
17
WIKA operating instructions gas-actuated thermometer, model TGU73.100
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Special knowledge for working with instruments for hazardous
areas:
The skilled personnel must have knowledge of ignition protection
types, regulations and provisions for equipment in hazardous areas.
Special operating conditions require further appropriate knowledge,
e.g. of aggressive media.
On the wetted parts of the instrument, small residual
amounts of the adjustment medium (e.g. compressed air,
water, oil) can adhere from production.With increased
requirements for technical cleanliness, suitability for
the application must be checked by the operator before
commissioning.
3.5 Personal protective equipment
The personal protective equipment is designed to protect the skilled
personnel from hazards that could impair their safety or health during
work.When carrying out the various tasks on and with the instrument,
the skilled personnel must wear personal protective equipment.
Follow the instructions displayed in the work area regarding
personal protective equipment!
The requisite personal protective equipment must be provided by the
operating company.
3. Safety
19
WIKA operating instructions gas-actuated thermometer, model TGU73.100
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Product label (example)
1Conformity marking + identification number
2Date of manufacture
3Liquid filling
4Permissible ambient temperature
5Serial number
6Article number
7Approval-related data
8Model
Before mounting and commissioning the
instrument, ensure you read the operating
instructions!
Risk of burns!
Potentially dangerous situation caused by hot surfaces.
1
2
4
5
6
7
8
3
3. Safety
20 WIKA operating instructions gas-actuated thermometer, model TGU73.100
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Do not dispose of with household waste. Ensure a proper
disposal in accordance with national regulations.
3.7 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 protection instructions in these operat-
ing instructions.
▶Observe the relevant country-specific regula-
tions for installation and use in hazardous areas
(e.g. IEC 60079-14, NEC, CEC).
Check whether the classification is suitable for the application. Observe
the relevant national regulations.
ATEX
II 2G Ex ia IIC T4 Gb
IECEx
Ex ia IIC T4 Gb
3. Safety
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