Datasheet

ManualsBrandsB+B THERMO-TECHNIK ManualsSensorsTemperature sensor Temp.-Sensor DS 1820-BT -55 up to +125 °C Radial lead

DATA SHEET

Technical changes reserved

0141 0316-39 07.2013

Temperature Sensor

DS 1820

DescriptionDescription

Typical areas of application

• production of self-made temperature probes

• Monitoring of frozen goods as per

• cold storage regulations

• Building instrumentation

• air conditioning systems

• Quality assurance

• Science and research laboratories

• Industrial temperature logging

Characteristic features

• DALLAS semiconductor sensor DS 1820

• Continuous operating temperature –55 ... +125 °C

• Resolution 0.06 °C

• Accuracy ±0.5 °K nominal (from 0 ... 70 °C),

as per data sheet of manufacturer

• Supply voltage 3.6 … 5.5 V DC

• Current consumption active state 1.5 mA

• Data pin sink current 4 mA

• Scratchpad memory for probe identication

Available probes

The reasonably priced probes with PVC connection cable are meant

for measurement in open atmosphere, on surfaces or in non-aggres-

sive gas medium. The probes are sealed and can bear water contact

for some time. However, long term immersion in liquid is not recom-

mended.

The models with stainless steel probe tube are chemically stable and

the tube portion of probe can be submerged in liquid, the stainless

steel (1.4571) does not get affected. However, in the cable termination

area, the probe should not come into constant contact with liquid.

For application in pipeline system, pressure resistant models with 1/8“

or M10 threads are also available. These models with gasket are sui-

table up to 20 bar.

Article number

Digital sensor DS18S20 DS1820-BT

Formation of temperature sensor Networks

All necessary components, with plug-in type RJ12 connectors, are

available for the 16 channel temperature measuring system so that a

fully functional system can be developed even without soldering know-

ledge.

The speciality about wiring of the sensors is the „Bus technology“: All

sensors can be driven parallel on a 3-wire line over which both supply

and data communication can run through.

Hence, the bus topology is completely arbitrary: it can built both as a

star or extended structure. Mixed forms are also possible. It is only to

be ensured that the sum of all connection cables does not exceed the

maximum allowable length of approx. 60 m.

B+B Thermo-Technik GmbH | Heinrich-Hertz-Straße 4 | D-78166 Donaueschingen

Fon +49 771 83160 | Fax +49 771 831650 | info@bb-sensors.com | bb-sensors.com

Summary of content (3 pages)

PAGE 1
DATA SHEET Temperature Sensor DS 1820 Description Characteristic features • • • • • • • • DALLAS semiconductor sensor DS 1820 Continuous operating temperature –55 ... +125 °C Resolution 0.06 °C Accuracy ±0.5 °K nominal (from 0 ... 70 °C), as per data sheet of manufacturer Supply voltage 3.6 … 5.5 V DC Current consumption active state 1.
PAGE 2
DATA SHEET Temperature Sensor DS 1820 Hub Installing and configuration For connection of multiple probes, a hub is available with 10 ports (RJ12). One port is used for connection of temperature logger, and if necessary, another port is used for connection of another hub. As a result, 8 to 9 ports are available for connection of temperature probes. The hub has a supply capacitor and a pullup resistance of 10 kΩ for compensation of connection capacitance.
PAGE 3
DATA SHEET Temperature Sensor DS 1820 Thermal transition resistance of measuring object-sensor This is the main measuring error which occurs during surface measurements. This can be eliminated by providing good thermal contact through mounting in a tube, applying thermal conducting paste or thermal conducting adhesive.