Kobold MWE User manual

Page 1 DT0645
Operating Instructions
for
Temperature Sensor
Model MWE

MWE
Page 2 DT0645
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Safety ............................................................................................................ 3
3.1Personnel qualification ......................................................................... 3
4.Instrument Inspection .................................................................................... 3
5.Regulation Use ............................................................................................. 4
6.Operating Principle ........................................................................................ 4
7.Electrical connection ..................................................................................... 5
7.1General ................................................................................................ 5
7.2Sensor wiring diagram ......................................................................... 5
8.Maintenance and repairs ............................................................................... 6
9.Storage ......................................................................................................... 6
10.Technical Details ........................................................................................... 6
10.1Sensor wiring ....................................................................................... 6
10.2Sensor according to IEC 60751 ........................................................... 6
10.3Tolerance class .................................................................................... 7
10.4General details ..................................................................................... 7
11.Trouble Shooting ........................................................................................... 7
12.Dismounting, return and disposal .................................................................. 8
12.1Dismounting ......................................................................................... 8
12.2Disposal ............................................................................................... 8
13.Order codes .................................................................................................. 8
14.EU-Declaration of Conformity ....................................................................... 9
15.UK-Declaration of Conformity ..................................................................... 10
16.Notes ........................................................................................................... 11
Manufactured by:
Kobold Mesura S.L.U
Avda. Conflent 68 nave 15
08915 Badalona
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
www.kobold.com
Edition: Sept. 2022

MWE
DT0645 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
Operating instructions, data sheet, approvals and further information via the QR
code on the device or via www.kobold.com
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC machinery directive.
3. Safety
Before installation, commissioning and operation, ensure that the appropriate
sensor is used.
Non-observance can result in serious injury and/or damage to equipment.
3.1 Personnel qualification
Improper handling can result in considerable injury and damage to equipment.
The instructions included in this manual may only be carried out by qualified
personnel.
4. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
 Device model: MWE

MWE
page 4 DT0645
5. Regulation Use
The temperature sensors of the MWE Series are suitable for all applications
where processes involving fluids, solid bodies or materials, or gases, require
temperature recording and measurement. Our temperature sensors are suitable
for use in the following industrial areas: chemicals, petrochemicals, water, feed,
food, sanitary, etc.
Any use of the Temperature Sensor, model: MWE, which exceeds the
manufacturer’s specification may invalidate its warranty. Therefore, any resulting
damage is not the responsibility of the manufacturer. The user assumes all risk
for such usage.
6. Operating Principle
Resistance thermometers work by using the continuous change of resistance of
metals subject to temperature rising and decreasing. The most common
resistance material used is platinum, as it is very stable and has very good
repeatability. The temperature coefficient of platinum is positive, so its resistance
increases as the temperature rises. This property is defined in the IEC751
standard, which defines measurements deviations categories A and B.

MWE
DT0645 page 5
7. Electrical connection
7.1 General
Caution! Make sure that the voltage values of your system
correspond with the voltage values of the measuring unit.
The electrical connection should only be carried out by specialised
personnel with adequate technical knowledge.
7.2 Sensor wiring diagram
2 wire
3 wire

MWE
page 6 DT0645
4 wire
8. Maintenance and repairs
The instrument does not require maintenance or servicing.
Repairs must be only carried out by Kobold (manufacturer)
9. Storage
Measuring instruments should be protected against humidity and dust.
Storage temperature: -40 ºC…+85 ºC for sensors without transmitter.
10. Technical Details
10.1 Sensor wiring
- 2 wires Error due to the lead resistance of the sensor
- 3 wires With connecting wires up to 25 m, lead resistance is negligible.
- 4 wires The lead resistance of the connecting wires is negligible
10.2 Sensor according to IEC 60751
-Class B
-Class A
-Class 1/3
-Class 1/10
The nominal value of Pt100 sensors is 100Ω at 0 ºC.

MWE
DT0645 page 7
10.3 Tolerance class
-Class B ±0.3 + 0.005 * t
-Class A ±0.15 + 0.002 * t
-Class 1/3 ±0.10 + 0.005 * t
-Class 1/10 ±0.03 + 0.0017 * t
t= measuring temperature in ºC without sign
10.4 General details
Ambient temperature: PVC (max. 80 °C)
Silicone (max. 200 °C)
PTFE (max. 220 °C)
Fiber glass braided (max. 250 °C)
11. Trouble Shooting
Faults Possible Causes Corrective actions
No signal/line breakage Mechanical load too high or
over temperature.
Line breakage.
Replace probe or measuring
insert.
Check wiring.
Wrong measured values Sensor drift caused by over
temperature
Replace probe or measuring
insert.
Sensor drift caused by
chemical attack
Use a sensor with thermowell
Wrong measured values
(too low)
Entry of moisture into cable or
measuring insert
Replace probe or measuring
insert.
Wrong measured values
and response times too long
Wrong mounting geometry,
for example mounting depth
too deep or heat dissipation
too high
The temperature-sensitive
area of the sensor must be
inside the medium, and
surfaces must be isolated.
Deposits on the sensor or
thermowell
Remove deposits
Oscillation of measured
value
Cable break in connecting
cable or loose contact caused
by mechanical overload
Replace probe or measuring
insert with a suitable design,
for example equipped with a
strain relief or a thicker
conductor cross-section.
Check wiring

MWE
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Corrosion Composition of the medium
not as expected or modified
or wrong thermowell material
selected
Analyze medium and then
select a more-suitable material
or replace thermowell regularly
Signal interference Stray currents caused by
electric fields
or ground loops
Use of screened connecting
cables,
increase the distance to
motors and
power lines
Ground loop Elimination of potentials, use
of galvanic isolated transmitter
supply isolators or transmitters
12. Dismounting, return and disposal
12.1 Dismounting
Residual media in dismounted instruments can result in a risk to persons, the
environment and equipment. Take sufficient precautionary measures.
All instruments delivered to KOBOLD must be free from any kind of hazardous
substances (acids, bleaches, solutions, etc.).
12.2 Disposal
Incorrect disposal may endanger the environment.
13. Order codes
For order codes information, please see the technical datasheet.

MWE
DT0645 page 9
14. EU-Declaration of Conformity
DECLARACIÓN DE CONFORMIDAD EU
EU DECLARATION OF CONFORMITY
EU-KONFORMITÄTSERKLÄRUNG
DÉCLARATION DE CONFORMITÉ
DICHIARAZIONE DI CONFORMITÀ EU
KOBOLD MESURA S.L.U.
Avda. Conflent 68 nave 15, 08915 Badalona (España)
Declara, bajo la propia responsabilidad, que el producto
Declares under our sole responsibility, that the product
Erklärt in alleiniger Verantwortung, daß das Produkt
Déclare sous sa seule responsabilité, que le produit
Dichiara sotto la propia responsabilità, che il prodotto
MWE........
A los cuales se refiere esta declaración, son conformes a las siguiente Directivas Europeas:
To which this declaration relates is in conformity with the following European Directives:
Mit folgenden Richtilinien konform ist:
À auxquels se réfère cette déclaration, ils sont conformes aux Directives Européennes suivant :
A ai quali si riferisce questa dichiarazione, sono conformi alle direttive europee seguente:
EMC2014/30/EU LVD2014/35/EU RoHS2011/65/EU
Normas armonizadas y documentos de la normativa aplicados:
Applied harmonised standards and normative documents:
Angewandte harmonisierte Normen oder normativer Dokumente:
Normes harmonisées et documents normatifs appliqués
Norme armonizzate e documenti normativi applicati:
EN 61010-1 :2011, EN 61000-6-2 :2019, IEC 60529:2018, IEC 61010-1:2016,
IEC 61326-1:2012, IEC 60751:2022
Fabricado en: KOBOLD MESURA SLU Avda. Conflent 68, nave 15 08915 BADALONA (Spain)
Made in:
Hergesteltlt in:
Fabriqué dans:
Fabbricato in:
Badalona Sept. 2022 Gerente
DT0687 26/09/2022
Azzam Chamand

MWE
page 10 DT0645
15. UK-Declaration of Conformity
DT0685
DECLARACIÓN DE CONFORMIDAD UK
UK DECLARATION OF CONFORMITY
UK-KONFOMITÄTSERKLÄRUNG
DÉCLARATION DE CONFORMITÉ UK
DICHIARAZIONE DI CONFORMITÀ UK
KOBOLD MESURA SLU
Avda. Conflent, 68 nave 15 08915 Badalona (España)
We Kobold Mesura S.L.U. declare under our sole responsibility that the product:
Temperature sensor
MWE…
To which this declaration relates is in conformity with the standards noted below:
BS EN 61010-1:2010
Safety requirements for electrical equipment for measurement,controL, and laboratory use. General
requirements
BS EN 61000-6-2:2019
Electromagnetic compatibility (EMC) -- Part 6-2: Generic standards - Immunity for industrial
environments
BS EN IEC 61326-1:2021
Electrical equipment for measurement, control and laboratory use. EMC requirements. General
requirements
BS EN IEC 60751:2019
Industrial platinum resistance thermometers and platinum temperature sensors
Also, the following UK guidelines are fulfilled:
S.I. 2016/1091 Electromagnetic Compatibility Regulations 2016.
S.I. 2016/1101 Electrical Equipment (Safety) Regulations 2016.
S.I. 2012/3032 The Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic
Equipment Regulations 2012.
Badalona Sept. 2022 Gerente

MWE
DT0645 page 11
16. Notes

MWE
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KOBOLD MESURA S.L.U
Avda. Conflent 68 nave 15
08915 Badalona
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
www.kobold.com
Technical data
Subject to change without prior notice