Operating instructions
Betriebsanleitung
Mode d'emploi
Manual de instrucciones
EN
DE
FR
ES
WELD-PAD tubeskin thermocouple, model TC59-W
WELD-PAD tubeskin thermocouple assembly
Model TC59-W
WELD-PAD-Rohroberächen-Thermoelement
Typ TC59-W
Installation de thermocouple de peau WELD-PAD
Type TC59-W
Termopar para supercies de tubería WELD-PAD
Modelo TC59-W
EN
DE
FR
ES
2
14131033.02 09/2016 EN/DE/FR/ES
WIKA operating instructions model TC59-W (WELD-PAD)
Operating instructions model TC59-W Page 3 - 20
Betriebsanleitung Typ TC59-W Seite 21 - 38
Mode d'emploi type TC59-W Page
39 - 56
Manual de instrucciones modelo TC59-W Página
57 - 73
© 03/2016 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
Contents
1. General information 4
2. Safety 5
3. Specifications 7
4. Design and function 9
5. Transport, packaging and storage 9
6. Commissioning, operation 10
7. Maintenance 18
8. Faults 18
9. Dismounting, return and disposal 19
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WIKA operating instructions model TC59-W (WELD-PAD) 3
Contents
EN
1. General information
14131033.02 09/2016 EN/DE/FR/ES
WIKA operating instructions model TC59-W (WELD-PAD)4
1. General information
■
The thermocouple described in the operating instructions has been manufactured
using state-of-the-art technology. All components are subject to stringent quality and
environmental criteria during production. Our management systems are certied 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.
■
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.
■
Skilled personnel must have carefully read and understood the operating instructions
prior to beginning any work.
■
The manufacturer’s liability is void in the case of any damage caused by using the
product contrary to its intended use, non-compliance with these operating instructions,
assignment of insuciently qualied skilled personnel or unauthorised modications to
the instrument.
■
The general terms and conditions contained in the sales documentation shall apply.
■
Subject to technical modications.
■
Further information:
- Internet address: www.wika.de / www.wika.com
- Relevant data sheet: TE 65.58
- Application consultant:
Tel.: +49 9372 132-0
Fax: +49 9372 132-406
info@wika.com
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 equipment or the environment, if not avoided.
Information
... points out useful tips, recommendations and information for ecient and
trouble-free operation.
EN
1. General information / 2. Safety
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WIKA operating instructions model TC59-W (WELD-PAD) 5
DANGER!
... identies 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.
2. Safety
WARNING!
Before installation, commissioning and operation, ensure that the appropriate
thermocouple has been selected in terms of measuring range, design and
specic measuring conditions.
Non-observance can result in serious injury and/or damage to the equipment.
Further important safety instructions can be found in the individual chapters of
these operating instructions.
2.1 Intended use
These sensors are used for temperature measurement in industrial applications.
The instrument has been designed and built solely for the intended use and may only be
used accordingly.
The technical specications contained in these operating instructions must be observed.
Improper handling or operation of the instrument outside of its technical specications
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.
2.2 Personnel qualification
WARNING!
Risk of injury should qualication be insucient!
Improper handling can result in considerable injury and damage to equipment.
■
The activities described in these operating instructions may only be carried
out by skilled personnel who have the qualications described below.
■
Keep unqualied personnel away from hazardous areas.
EN
2. Safety
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WIKA operating instructions model TC59-W (WELD-PAD)6
Skilled personnel
Skilled personnel 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-specic regulations, current standards and directives, are capable of carrying out
the work described and independently recognising potential hazards.
Special installation conditions require further appropriate knowledge, e.g. routing a sensor
within a furnace.
2.3 Special hazards
WARNING!
For hazardous media such as oxygen, acetylene, ammable or toxic gases or
liquids etc., in addition to all standard regulations, the appropriate existing codes
or regulations must also be followed.
WARNING!
Protection from electrostatic discharge (ESD) required.
The proper use of grounded work surfaces and personal wrist straps is required
when working with exposed circuitry (printed circuit boards), in order to prevent
static discharge from damaging sensitive electronic components.
To ensure safe working on the instrument, the operating company must ensure
■
that suitable rst-aid equipment is available and aid is provided whenever
required.
■
that the operating personnel are regularly instructed in all topics regarding
work safety, rst aid and environmental protection and knows the operating
instructions and, in particular, the safety instructions contained therein.
WARNING!
Residual media in contact with dismounted instrument can result in a risk to
persons, the environment and the equipment. Take sucient precautionary
measures.
Do not use this instrument in safety or emergency stop devices. Incorrect use of
the instrument can result in injury.
Should a failure occur, aggressive media with extremely high temperature may
be present at the instrument.
EN
2. Safety / 3. Specications
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WIKA operating instructions model TC59-W (WELD-PAD) 7
2.4 Labelling, safety marks
Product label
Explanation of symbols
Before mounting and commissioning the instrument, ensure you read
the operating instructions!
3. Specifications
Thermcouple types
Type Recommended max. operating temperature
IEC 60584-1 ASTM E230
K 1,200 °C (2,192 °F) 1,260 °C (2,300 °F)
J 750 °C (1,382 °F) 760 °C (1,400 °F)
E 900 °C (1,652 °F) 870 °C (1,598 °F)
N 1,200 °C (2,192 °F) 1,260 °C (2,300 °F)
Tolerance value
A cold junction temperature of 0 °C (32 °F) is taken as basis with the denition of the
tolerance value of thermocouples.
When using a compensating cable or thermocouple cable, an additional measuring error
must be considered.
TC59-V
1x Type K / Standard 0 ... +1,260 °C
ASTM E230
Made in Germany 2015
11012345
Thermocouple in accordance with standard
Model
Year of manufacture
W
EN
3. Specications
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WIKA operating instructions model TC59-W (WELD-PAD)8
Tolerance values of the thermocouples per IEC 60584 / ASTM E230
Type Tolerance value Class Temperature range Tolerance value
K
N
IEC 60584-1 1 -40 ... +1,000 °C ±1.5 °C or 0.0040 ∙ | t |
1) 2)
2 -40 ... +1,200 °C ±2.5 °C or 0.0075 ∙ | t |
ASTM E230 Special 0 ... +1,260 °C ±1.1 °C or ±0.4 %
Standard 0 ... +1,260 °C ±2.2 °C or ±0.75 %
J IEC 60584-1 1 -40 ... +750 °C ±1.5 °C or 0.0040 ∙ | t |
2 -40 ... +750 °C ±2.5 °C or 0.0075 ∙ | t |
ASTM E230 Special 0 ... +760 °C ±1.1 °C or ±0.4 %
Standard 0 ... +760 °C ±2.2 °C or ±0.75 %
E IEC 60584-1 1 -40 ... +800 °C ±1.5 °C or 0.0040 ∙ | t |
2 -40 ... +900 °C ±2.5 °C or 0.0075 ∙ | t |
ASTM E230 Special 0 ... +870 °C ±1.0 °C or ±0.4 %
Standard 0 ... +870 °C ±1.7 °C or ±0.5 %
1) ItI is the value of the temperature in °C without consideration of the sign
2) The greater value applies
Limited error with selected temperatures in °C for thermocouples types K and N
Temperature Tolerance value IEC 60584-1
(ITS 90) Class 1 Class 2
°C °C °C
0 ±1.5 ±2.50
100 ±1.5 ±2.50
200 ±1.5 ±2.50
300 ±1.5 ±2.50
400 ±1.6 ±3.00
500 ±2.0 ±3.75
600 ±2.4 ±4.50
700 ±2.8 ±5.25
800 ±3.2 ±6.00
900 ±3.6 ±6.75
1,000 ±4.0 ±7.50
1,100 - ±8.25
1,200 - ±9.00
Other thermocouple types on request
For further specications see WIKA data sheet TE 65.58 or Technical information IN 00.23
and the order documentation.
EN
4. Design and function / 5. Transport, packaging and storage
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WIKA operating instructions model TC59-W (WELD-PAD) 9
4. Design and function
4.1 Description
Model TC59-W WELD-PAD tubeskin thermocouple assemblies are designed to measure
the temperature of tubes typically located within boilers, furnaces, heat exchangers and
exterior piping.
The most important considerations for eective tubeskin design are repeatability, durability
and accuracy. To achieve these functions the thermocouple must incorporate within its
design excellent insulation properties, material compatibility and good physical contact with
the tube. It must also have the ability to withstand high radiant temperatures and stresses,
and in some cases harsh combustion chemistry.
With all tubeskin designs the correct installation is of prime importance. Incorrect
attachment can ultimately lead to inaccurate temperature readings.
Sheathed cable
The sheathed cable (mineral-insulated cable, MI cable) is exible. The minimum bending
radius is 5 times the sheath diameter.
TC59-W can be assembled as cable probes or as sensors with a connection head.
Optionally, a temperature transmitter can be built into the connection head. For this
temperature transmitter, separate operating instructions will be enclosed.
4.2 Scope of delivery
Cross-check scope of delivery with delivery note.
5. Transport, packaging and storage
5.1 Transport
Check the instrument for any damage that may have been caused by transport.
Obvious damage must be reported immediately.
5.2 Packaging
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).
EN
5. Transport, packaging and storage / 6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD)10
5.3 Storage
Permissible conditions at the place of storage:
■
Storage temperature: 0 ... 70 °C (32 ... 158 °F)
■
Humidity: 35 ... 85 % relative humidity (no condensation)
Avoid exposure to the following factors (terminal side, connection head):
■
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
Store the instrument in its original packaging in a location that fulls the conditions listed
above. If the original packaging is not available, pack and store the instrument as described
below:
1. Place the instrument, along with shock-absorbent material, in the packaging.
2. If stored for a prolonged period of time (more than 30 days), place a bag, containing a
desiccant, inside the packaging.
6. Commissioning, operation
WARNING!
When the thermocouple is installed, the temperature must not drop below the
allowed operating temperature (environment, medium) or exceed it, even when
taking convection and heat radiation into account!
WARNING!
Thermocouples must be earthed (grounded) if dangerous voltages could be
expected at the connection wires (caused, for example, by mechanical damage,
electrostatic discharge or induction)!
6.1 Installation scope
The following is a guide for installation of WELD-PAD tubeskin thermocouples. It gives
guidelines and suggestions for preparation, installation, and welding WELD-PAD
thermocouples. Due to the variety of applications some of the suggestions made here may
not be appropriate. The end user must determine if these instructions are suitable for their
unique application. Contact WIKA should you have any questions regarding the installation.
EN
6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD) 11
6.2 Before you start
■
Ensure there is enough MI cable to reach the termination box for each WELD-PAD,
especially if on-site bending and expansion loops are required.
■
Avoid passing MI cable through hot zones.
■
Route the MI cable thermocouple in contact with the coolest side of the tube. This will
substantially increase the life expectancy.
■
Ensure all surfaces to be welded are cleaned by appropriate methods.
■
When grinding always use clean abrasive materials that have not been used on other
materials.
■
A wire brush is not adequate to properly clean the tube.
■
Test t the WELD-PAD thermocouple at the desired location to ensure adequate length
of MI cable was provided.
■
Ensure all bending is correct and sucient allowance is provided for tube movement.
■
Based on the customer’s weld procedure, determine the appropriate preheat, interpass
and weld ller metal composition for the parent materials.
■
Determine if controlled cooling or post weld heat treatment is required.
Bend radius
Always use an appropriate tube bender for the corresponding diameter of MI cable. If
bending by another means then use bends with radius equal to or greater than those on a
tube bender. The minimum bend radius is 5 times the diameter of the MI cable.
6.3 Sensor positioning
The WELD-PAD must be located at the peak heat ux of the tube it is mounted on. This
must be done to ensure the reading accuracy of the WELD-PAD. Remove scale and rust
from the tube in the locations required for welding to the tube. The MI cable must route to
the cool side of the tube from the sensor position.
EN
6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD)12
6.4 Tests/Checks
■
Test loop resistance of the thermocouple circuit at ambient temperature prior to welding/
routing the WELD-PAD, record results.
■
After completing the welding/routing of the WELD-PAD to the tube, test loop resistance
at ambient temperature and compare.
▶
If a deviation of greater than 5 % between readings occurs, please contact WIKA.
■
Perform any non-destructive examination or heat treatment as required.
■
Ensure adequate tube wall thickness at the weld locations. This can be checked by
thickness testing to customer specications.
6.5 Welding process
Gas Tungsten Arc Welding (GTAW) is the suggested welding process due to its relatively
clean weld. During welding operation, the requirements of the relevant material data
sheets and the applicable directives and standards must be considered regarding the
heat treatment, ller rods or welding procedures. Proper installation is a major step in the
success of a WELD-PAD installation. Although the WELD-PAD is one of the most rugged
sensors available, it can be destroyed by improper welding.
6.6 WELD-PAD welding
■
Locate the thermocouple at the appropriate location on the tube.
■
Weld the thermocouple pad to the tube.
■
Use 3.2 mm (1/8") llet weld to weld 3 sides using one continuous pass (see gure 1).
WARNING!
Do not weld the end where the sheath leaves the WELD-PAD.
WARNING!
Ensure the thermocouple tip is in contact with the furnace tube.
Fillet
weld
Figure 1: Welding details
EN
6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD) 13
6.7 Tube clip welding
■
Attach clips at predetermined locations. Preheat area before welding if required.
Weld tube clip ends only and ensure there is a loose t (no friction) between the
mineral-insulated cable and the clip (see gure 2).
■
The tube clip should allow axial expansion of the mineral-insulated cable.
■
Weld clips maximum every 300 mm (12") to 450 mm (18") of run.
6.8 Expansion loops
Expansion loops should be designed to account for maximum tube movement from start up
position to operating temperature. Loops should be designed in accordance with allowable
space available. Examples of expansion loops are S-loop, multiple coil, single coil and spiral
loop.
Figure 2: Tube clip welding
MI cable
Fillet
weld
Fillet
weld
S-loop
Single coil
Multiple coil
Spiral loop
EN
6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD)14
6.9 Exiting the furnace
The sensor should exit the furnace as per installation requirements. MI cable must follow
best practices for routing.
WARNING!
Ensure the cable does not pass through direct ame.
6.9.1 Fixed exit
Assemble the process neck extension as per the installation.
Install and tighten compression tting to manufacturer’s specications, if included.
WARNING!
Do not place compression tting on the thermocouple transition.
Assemble instrument neck extension as per the installation requirement.
If applicable, attach connection head.
Route sensor to termination location and complete electrical connection.
EN
6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD) 15
6.9.2 Piston/Spring exit
Pack the exit orice of the furnace wall with high-temperature ceramic ber (kaowool)
insulation to keep outside connections cool. Install plate and spring, tighten collar at desired
location. Install split washers and pipe cap.
WARNING!
Ensure that the thermocouple transition does not exceed 175 °C (350 °F), the
transition should be 152 mm (6") away from the furnace entry connection.
V-Pad_Spring_Piston_OI.ai
Piston style
Spring-loaded style
Existing
Existing
EN
6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD)16
6.10 Electrical connection
CAUTION!
■
Damage to cables, wires and connection points must be avoided.
■
Flying leads with bare ends must be nished with ferrule ends (cable
preparation).
The electrical connection is to be made according to the sensor connections/pin
assignments shown below:
Ceramic terminal block
Crastin terminal block
Cable connection
3166822.03
Single thermocouple
Dual thermocouple
+
-
+
-
-
+
+
-
+
-
-
+
Single thermocouple
Dual thermocouple
3171966.01
Single
thermocouple
Colour coding of the wire ends see table
Cable
Dual
thermocouple
EN
6. Commissioning, operation
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WIKA operating instructions model TC59-W (WELD-PAD) 17
Colour code of cable
■
IEC 60584-3
Type of thermocouple Positive leg Negative leg
K Green White
J Black White
E Violet White
N Pink White
■
ASTM E230
Type of thermocouple Positive leg Negative leg
K Yellow Red
J White Red
E Violet Red
N Orange Red
6.11 Cable connections
The cable gland must be sealed to ensure that the required protection class is reached.
Requirements for meeting ingress protection
■
Only use cable glands within their indicated clamping range (cable diameter suitable for
the cable gland).
■
Do not use the lower clamping area with very soft cable types.
■
Only use circular cross-section cables (if necessary, slightly oval in cross-section).
■
Do not twist the cable.
■
Repeated opening/closing is possible; however only if necessary, as it might have a
detrimental eect on the protection class.
■
For cables with a pronounced cold-ow behaviour the screw connection must be fully
tightened.
CAUTION!
Seal should be checked for signs of brittleness and, if necessary, replaced.
6.12 Tapered threads (NPT)
Connections with tapered threads (NPT) are self-sealing. It should be checked whether it
may be necessary to seal them additionally with PTFE tape or thread sealant. The threads
must be lubricated with a suitable lubricant before tting.
Tighten the threads by hand when carrying out the nal assembly in the plant. Correspond
to the delivery status of the premounted components. The nal tightening and sealing must
be made with a wrench (1.5 to 3 rotations).
EN
7. Maintenance / 8. Faults
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WIKA operating instructions model TC59-W (WELD-PAD)18
7. Maintenance
These thermocouples are maintenance-free.
Repairs must only be carried out by the manufacturer.
8. Faults
Faults Causes Measures
No signal/line breakage Mechanical load too high or
overtemperature
Replace probe or measuring insert
with a suitable design
Erroneous
measured values (of
thermocouples)
Parasitic voltages (thermal
voltages, galvanic voltage) or
incorrect thermocouple cable type
Use the correct thermocouple
cable type
Signal interference Stray currents caused by electric
elds or earth loops
Use of shielded connecting cables,
increase in the distance to motors
and power lines
Earth circuits Elimination of potentials, use of
galvanically isolated transmitter
supply isolators or transmitters
CAUTION!
If faults cannot be eliminated by means of the measures listed above, shut down the
instrument immediately, and ensure that pressure and/or signal are no longer present,
and secure the instrument from being put back into operation inadvertently.
In this case, contact the manufacturer.
If a return is needed, please follow the instructions see chapter 9.2 “Return”.
EN
9. Dismounting, return and disposal
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WIKA operating instructions model TC59-W (WELD-PAD) 19
9. Dismounting, return and disposal
WARNING!
Residual media in the dismounted instrument can result in a risk to persons, the
environment and equipment. Take sucient precautionary measures.
9.1 Dismounting
WARNING!
Risk of burns!
Let the instrument cool down suciently before dismounting it!
During dismounting there is a risk of dangerously hot pressure media escaping.
Only disconnect the instrument once the system has been depressurised!
9.2 Return
WARNING!
Strictly observe the following when shipping the instrument:
All instruments delivered to WIKA must be free from any kind of hazardous
substances (acids, bases, solutions etc.).
When returning the instrument, use the original packaging or a suitable transport package.
To avoid damage:
1. Place the instrument, along with the shock-absorbent material, in the packaging.
Place shock-absorbent material evenly on all sides of the transport packaging.
2. If possible, place a bag, containing a desiccant, inside the packaging.
3. Label the shipment as transport of a highly sensitive measuring instrument.
Information on returns can be found under the heading “Service” on our local
website.
9.3 Disposal
Incorrect disposal can put the environment at risk.
Dispose of instrument components and packaging materials in an environmentally
compatible way and in accordance with the country-specic waste disposal regulations.
EN
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WIKA operating instructions model TC59-W (WELD-PAD)20
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dans d''autres langues
- English: WIKA TC59-W Operating instructions
- español: WIKA TC59-W Instrucciones de operación
- Deutsch: WIKA TC59-W Bedienungsanleitung
Documents connexes
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WIKA TC59-V Mode d'emploi
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