Kobold MTE Manual de usuario
Operating Instructions
for
Temperature Sensor
Model MTE
MTE
Page 2 DT0710
1. Contents
1.Contents ........................................................................................................ 2
2.Note .............................................................................................................. 3
3.Instrument Inspection .................................................................................... 3
4.Regulation Use ............................................................................................. 3
5.Operating Principle ........................................................................................ 4
6.Electrical connection ..................................................................................... 4
6.1Sensor wiring diagram. ........................................................................ 4
7.Maintenance and repairs ............................................................................... 5
8.Storage ......................................................................................................... 5
9.Technical Details ........................................................................................... 6
9.1Sensor and accuracy ........................................................................... 6
9.2Sensor wiring ....................................................................................... 6
9.3General details ..................................................................................... 6
9.4Materials .............................................................................................. 6
1.1Process connection ............................................................................. 6
9.5Thermocouple colours code ................................................................. 7
10.Trouble Shooting ........................................................................................... 8
11.Dismounting, return and disposal .................................................................. 9
11.1Dismounting ......................................................................................... 9
11.2Disposal ............................................................................................... 9
12.Order codes ................................................................................................ 10
13.EU-Declaration of Conformity ..................................................................... 11
14.UK Declaration of Conformity ...................................................................... 12
Manufactured by:
Kobold Mesura S.L.U
Avda. Conflent 68 nave 15
08915 Badalona
Tel.: +34 93 460 38 83
Fax: +34 93 460 38 76
E-Mail: [email protected]
www.kobold.com
Edition 05/2023
MTE
DT0710 page 3
2. Note
Please read these operating instructions before unpacking and putting the unit in
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 correspond 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.
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-machine guidelines.
3. 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: MTE
4. Regulation Use
The temperature sensors of the MTE 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: MTE, 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.
MTE
Page 4 DT0710
5. Operating Principle
Thermocouples use the Seebeck effect, state that a voltage is generated at the
point of contact of two different metals.
Electrical conductors of different metals or metal alloys are connected by
punctiform welding known as “hot junction”. A thermal e.m.f. is generated at the
free ends (cold junction) when heating the “hot junction”. The free ends are
extended to a point with known temperature (reference junction) by means of
compensating leads.
According to IEC 60584-1
6. Electrical connection
6.1 Sensor wiring diagram.
MTE
DT0710 page 5
7. Maintenance and repairs
The instrument does not require maintenance or servicing.
Repairs must be only carried out by Kobold (manufacturer)
8. Storage
Measuring instruments should be protected against humidity and dust.
Storage temperature: -40 ºC…+85 ºC for sensors without transmitter.
Storage temperature: See manual of the corresponding transmitter and display
mode.
MTE
Page 6 DT0710
9. Technical Details
9.1 Sensor and accuracy
Type Class Temp. range Limiting error Type Class Temp. range Limiting error
IEC 60584-1
K 1 -40ºC…+375ºC ±1,5ºC
K 1 +375ºC…+1000ºC ±0,0040 x (tº)
K 2 -40ºC…+333ºC ±2,5ºC
K 2 +333ºC…+1200ºC ±0,0075 x (tº)
9.2 Sensor wiring
2 wires and 4 wires
9.3 General details
Ambient temperature: -20…+150ºC
Process temperature: According to model data sheet
9.4 Materials
Sensor: Stainless steel 1.4404 ( others on request )
1.1 Process connection
According to model data sheet: G1/2, compression fitting M10x1,
Bayonet M12 or G1/4
IEC 60584-1
J 1 -40ºC…+375ºC ±1,5ºC
J 1 +375ºC…+750ºC ±0,0040 x (tº)
J 2 -40ºC…+333ºC ±2,5ºC
J 2 +333ºC…+750ºC ±0,0075 x (tº)
MTE
DT0710 page 7
9.5 Thermocouple colours code
MTE
Page 8 DT0710
10. 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
Sensor drift caused by
chemical attack
Use a chemically compatible
sensor
Wrong measured values
(too low)
Entry of moisture into cable or
measuring insert
Replace probe
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
Remove deposits
Oscillation of measured
value
Cable break in connecting
cable or loose contact caused
by mechanical overload
Replace probe with a suitable
design, for example equipped
with a strain relief or a thicker
conductor cross-section.
Check wiring
Corrosion
Composition of the medium
not as expected or modified
or wrong sensor material
selected
Analyze medium and then
select a more-suitable material
or replace the sensor 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
MTE
DT0710 page 9
11. Dismounting, return and disposal
11.1 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.).
11.2 Disposal
Note!
Avoid environmental damage caused by media-contaminated parts
Dispose of the device and packaging in an environmentally friendly
manner
Comply with applicable national and international disposal regulations and
environmental regulations.
Batteries
Batteries containing pollutants are marked with a sign consisting of a crossed-out
garbage can and the chemical symbol (Cd, Hg, Li or Pb) of the heavy metal that
is decisive for the classification as containing pollutants:
Cd1 Hg2 Pb3 Li4
1. „Cd" stands for cadmium
2. „Hg" stands for mercury
3. „Pb" stands for lead
4. „Li" stands for lithium
Electrical and electronic equipment
MTE
Page 10 DT0710
12. Order codes
For order codes information, please see the technical datasheet.
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