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  9. B+B Sensors DS18S20 User manual

B+B Sensors DS18S20 User manual

OPERATION MANUAL
Technical changes reserved
0141 0316-143 20.04.2016
Temperature probe DS18S20 with
connection cable and RJ11 plug
DescriptionDescription
Characteristic features
• Ready made, plug-in type temperature probe
with DALLAS semi-conductor sensor DS18S20
• Sensor in stainless steel protective sleeve
• Splash waterproof
• Connection black PVC at cable
• RJ11 plug connector with breakage protection
• Continuous operating temperature –10...+60 °C,
stationery –40...+80 °C, short time 100 °C
(see Temperature range on page 2)
• Resolution 0.06 °C
• Accuracy ±0.5 °C nominal (from -10...+85 °C),
as per data sheet of manufacturer
• Scratchpad memory for probe identication
Areas of application
• Monitoring of frozen goods as per cold storage regulations
• Building instrumentation
• Air conditioning systems
• Quality assurance
• Science and research laboratories
• Industrial temperature logging
Available probes
The reasonably priced probes with PVC connection cable are meant for
measurement in open atmosphere, on surfaces or in non-aggressive
gas medium. The probes are sealed and can bear water contact for
some time. However, long term immersion in liquid is not recommended.
Temperature range
The Dallas temperature sensors are semiconductor sensors. The un-
housed sensors are suitable for temperature measurement in the range
of –55…+125 °C. These temperature values are the nal limits and
operating above these values is not at all recommended, otherwise
the component can get damaged. In addition, the allowable application
temperature also depends on the connection cable and type of pro-
tection sleeve used. PVC insulated cable gets hard and brittle below
–10 °C and hence should not used at these lower temperatures other-
wise the insulation may crack. Above 60 °C continuous operating tem-
perature, the PVC becomes soft and can get deformed. At approx. 80
°C, the material becomes plastic and the insulation gets damaged un-
der pressure.
Technical data
Measuring range -55...+125 °C
Operating range -10...+60 °C, more detailed
information on page 2
Accuracy ±0,5 °C at -10...+85 °C
Nominal length 40 mm
Diameter probe Ø 6 mm
Material probe Stainless steel 1.4571
Model with decoupling capacitor
Connection cable PVC-at cable, unshielded
Plug connector RJ11, 6P4C
CE-conformance 2014/30/EU
EMV-noise emission EN 61000-6-3:2011
EMV-noise withstanding EN 61000-6-1:2007
Article Art. No
Temperature probe DS 1820
connection cable 2 m DS1820-LC-2M
connection cable 5 m DS1820-LC-5M
connection cable 10 m DS1820-LC-10M
connection cable 15 m DS1820-LC-15M
connection cable 20 m DS1820-LC-20M
connection cable 30 m DS1820-LC-30M
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 8316-50 | [email protected] | bb-sensors.com
1 / 2
OPERATION MANUAL
Technical changes reserved
0141 0316-143 20.04.2016
Temperature probe DS18S20 with
connection cable and RJ11 plug
Installing and conguration
The Dallas temperature sensor of type 1820 has an internal identica-
tion (serial number) and can be operated in parallel together with seve-
ral other components on a three-wire bus. After wiring all the sensors,
the PC adapter must be individually congured for the connected sen-
sors. Operation is not possible without prior conguration of the system.
Since the conguration is stored in the internal EEPROM of adapter,
this process is to be done only once. Only if an additional sensor is to be
used on the existing network, the conguration needs to be repeated.
The sorting of probes, found on the network, is done on the basis of
binary serial number.
Pin conguration of RJ11-plug connector
The Western-plug connector is congured as follows (View on the
cable, i.e. contact surfaces of the plug!):
1 Unoccupied
2 Ground
3 Dallas Data or unoccupied
4 Dallas Data
5 +5 V
6 Unoccupied
In 4-core at cable, PIN 1 and PIN 6 are not occupied. PIN 3 and 4 are
bridged together at the PC-adapter. Only PIN4 is needed to connect
the data line of the sensor.
Measuring accuracy
The sensors are calibrated during manufacture and have a typical
measuring accuracy of ±0.5 °C at 23 °C application temperature. At
the upper and lower limit of measuring range, the accuracy is some-
what on the lower side. Further information is available in the data
sheet of component at the website of manufacturer.
During all temperature measurements, the physical conditions are also
to be taken care of in order to avoid measuring error, which mainly
decides the precision of measuring arrangement.
Thermal transition resistance of
measuring objectsensor
This is the main measuring error which occurs during surface mea-
surements. This can be eliminated by providing good thermal contact
through mounting in a tube, applying thermal conducting paste or ther-
mal conducting adhesive.
Thermal heat transfer of sensor-ambient temperature
During surface measurements, the measuring arrangement should
be thermally insulated from the surroundings, for example, with some
foam material or mineral wood.
Thermal heat transfer of sensor-connecting wires
This measuring error can be minimised by itself, for example, if the
connecting lead used is as thin as possible and the connecting material
is a bad thermal conductor or if the connecting wire is tempered with
the measuring object.
In principle the highest measuring accuracy is achieved through immer-
sion in liquids or in a mounting tube. However, an additional measuring
error should be included while taking measurements on surfaces.
Accessories
Accessories Articleno.
Distribution box for temperature
measuring system, 10 sockets
RJ12
VERT-GEH
Temperature measuring system
TLOG with RS232-Interface
0567 0002
Temperature measuring system
TLOG with USB-Interface
0567 0004
Humidity/temperature measu-
ring system with USB-interface
Hytelog Multisensor USB
0567 0001
Attention
Please avoid extreme mechanical and inappropriate exposure.
The device/product is not suitable for potential explosive areas and
medical-technical applications.
B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen
Fon +49 771 83160 | Fax +49 771 8316-50 | [email protected] | bb-sensors.com
2 / 2

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