SD 145 - CONTACT TEMPERATURE SENSOR WITH A DIGITAL OUTPUT

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This contact temperature sensor with a digital output 1-Wire / DS18B20 SD 145 is intended for contact surface temperature measurement. The sensors are supplied with a fastening strap and cap and are suitableb for temperature measurement on pipelines. The sensing element itself is insulated from the environment. The temperature sensors are easy to install thanks to the unique “S-head” design of the SENSIT s.r.o. company.

The sensors consist of a plastic head and a metal measuring case placed in a protective plastic, POLYAMIDE cover where the sensing element (sensor) for temperature measurement is placed. In the head, there is a terminal block with a converter located, to which a supply cable for sensor supply and digital output signal according to the sensor type is connected through a cable grommet or a connector.

SD 145, SD 145K – DS 18B20 digital temperature sensor, communication via the 1-Wire bus

The temperature range of sensor use is defined in the table of technical parameters for the individual versions of sensors. The sensors meet the ingress protection of IP 65 according to EN 60529, as amended. In order to ensure high accuracy of measurements, it is recommended to clean the contact surface with a file and to use a thermally conductive paste between the measured surface and the metal sensor case.

The sensors are designed to be operated in a chemically non-aggressive environment, the use must be chosen with regard to the temperature and chemical resistance of the sensor head.

ACCESSORIES

CONEC 43-00092 connection plug
connection cables with a straight RKT connector or a right-angled RKWT connector
thermal paste up to 200 °C, 5 g

DECLARATION, CERTIFICATES, CALIBRATION

Manufacturer provides EU Declaration of Conformity.
Calibration – The entire production passes through a final metrological inspection, which is carried out by comparing with standards or working measuring instruments. Continuity of the standards and working measuring instruments is ensured within the meaning of Section 5 of Act No. 505/1990 on Metrology. The manufacturer offers to supply the sensors calibrated in the SENSIT s.r.o. laboratory (according to requirements of the EN ISO/IEC 17025 standard, as amended) or in an accredited laboratory.

Technické parametry

Sensor type (K - with connector)	SD 145 SD 145K
Output signal	1-Wire / DS18B20
Measuring range	-30 to 110 °C
Accuracy of the electronics	± 0.2 °C
*Type / Accuracy of the sensing element ), )	± 0.5 °C in the range of -10 to 80 °C ± 2 °C in the range of -30 to 100 °C
Supply voltage (U)	3 to 5.5 V DC
Rated supply voltage (Un)	5 V DC
Consumption / Supply current	1 mA
Working conditions	ambient temperature: -30 to 100 °C relative air humidity: max. 100 % atmospheric pressure: 70 to 107 kPa
Ingress protection	IP 65 in accordance with EN 60529, as amended
Time response	τ0.5 < 13 s (on smooth surface without paste)
Case material	brass
Insulation resistance	> 200 MΩ at 500 V/DC, 25°C ± 3 °C; humidity < 85 %
Protective case material	POLYAMIDE
Dimensions of the connection head	70 × 63 × 34 mm
Material of the connection head	POLYAMIDE
Minimum pipe diameter	20 mm
Length of the fastening strap	40 cm
Fastening strap / cap material	stainless steel / galvanized steel
Connector type in the head (for sensors with a connector)	RSFM4 - M12- Lumberg
Recommended wire cross-section (for sensors with a grommet)	0.35 to 1.5 mm2
Weight	min. 140 g

*) A temperature sensor measurement error depends on the ambient temperature and environment and the properties of the measured surface (method error) and can be within ± 1 °C.

**) It is recommended to apply heat-conducting paste or silicon grease to the measured surface, which will ensure faster response time and minimise the measurement error of the contact temperature sensor.

Note: Manufacturer reserves the right to make changes in design and technical characteristics of the products. For actual information, please always contact your dealer.