Kobold DTM Operating Instruction
Operating Instructions
for
Digital Thermometers
Model: DTM
DTM
page 2 DTM K01/0117
1. Contents
1.
Contents ........................................................................................................ 2
2. Note .............................................................................................................. 3
3. Instrument Inspection .................................................................................... 3
4. Regulation Use .............................................................................................. 3
5. Operating Principle ........................................................................................ 4
6. Mechanical Connection ................................................................................. 5
7. Electrical Connection .................................................................................... 5
8. Operation ...................................................................................................... 7
9. Key Function ................................................................................................. 8
10.Technical Information .................................................................................... 9
11.Order Codes ............................................................................................... 10
12.Maintenance ............................................................................................... 10
13.Dimensions ................................................................................................. 10
14.EU Declaration of Conformance .................................................................. 13
15.Annex .......................................................................................................... 14
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: +49(0)6192-2990
Fax: +49(0)6192-23398
E-Mail: info.de@kobold.com
Internet: www.kobold.com
DTM
DTM K01/0117 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 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:
Digital Thermometers, model: DTM
Operating Instructions
4. Regulation Use
Any use of the Digital Thermometers, model: DTM, which exceeds the
manufacturer’s specifications, may invalidate its warranty. Therefore, any
resulting damage is not the responsibility of the manufacturer. The user assumes
all risk for such usage.
DTM
page 4 DTM K01/0117
5. Operating Principle
Digital thermometers with intelligent electronics serve to display, monitor, control
and transmit temperatures in production processes and equipment.
The new device series DTM... is remarkable for its easy operation and adaptation
to the most demanding measurement applications.
A 4-segment 14 mm LED display provides clearly visible indication, the device is
programmed with three arrow keys beneath the lower back-lit LCD display.
The devices are fitted with an analogue output as standard. Other interfaces are
available as options. Up to four limit values can be adjusted in the relay version.
The temperature to be measured is sensed by a platinum resistance thermistor
and converted by the electronics to an analogue signal proportional to the
temperature. The digital thermometer can be supplied in a compact shaft version
for a maximum indicating range of a 200°C. Above 200°C the temperature sensor
should be connected externally to the basic device with a cable.
DTM
DTM K01/0117 page 5
6. Mechanical Connection
Before installation:
Be sure the maximum allowable working pressure and temperature specified
for the unit are not exceeded.
Make sure there are no packaging residues left inside the unit.
Installation:
Make sure the device into which the thermometer is to be installed has been
depressurised.
Mount the DTM where it may be easily connected according to applicable
codes and standards.
Do not screw in the unit using its housing, but rather on its hexagon (size 24
spanner).
If feasible, check the connection between the unit and the process or plant for
leaks as early as after mechanical installation.
7. Electrical Connection
Attention! Make sure that the voltage values of your system
correspond with the voltage values of the Digital Thermometers.
Make sure that the electrical supply wires are de-energized.
Remove the plastic cover
from the unit’s rear.
Insert the cable in the screw
terminal, and fix. Make sure
the PG connection is tight.
Pull off the terminal strip and
connect the cable as shown
in the terminal diagram.
DTM
page 6 DTM K01/0117
X103
1 Supply + channel-2 /external (option)
For external sensor
4 to 20 mA only
2 Not used
3 Supply - channel-2 /external (option)
4 Not used
5 Not used
6 Supply + channel-1 /external (option)
for external sensor
4 to 20 mA only
7 Not used
8 Supply - channel-1 /external (option)
9 Not used
10 Not used
X113
1 Not used
2 Not used
3 Not used
4 Data transfer RS 232 (option)
5 Data receive RS 232 (option)
6 Earth RS 232 (option)
7 Earth output (-)
8 Signal output (+)
9 Earth supply (-)
10 24 VDC supply (+)
Plug the terminal strip onto the plug base on the unit.
Slip on the plastic cap, and bolt in place.
Be sure the packing ring inside the plastic cap fits tightly.
Attention! Incorrect wiring will lead to damage of the unit’s
electronics.
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