SD 185K - TEMPERATURE SENSORS WITH STAINLESS STEEL STEM, CONNECTION HEAD AND DIGITAL OUTPUT

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This temperature sensor with a stem and stainless steel head and digital output 1-Wire / DS 18B20 - SD 185K is designed for contact temperature measurement of liquid and gaseous substances. In combination with a central holder, the sensor is suitable for temperature measurement in air conditioning ducts. The combination of a sensor and thermowell is suitable for measurement in pipelines. The material composition of the temperature sensor meets the requirements of Decree 38/2001 Coll., as amended, and thanks to the new design, the sensor can be easily cleaned. Due to these properties, the temperature sensors can be used in the food industry. The sensors consist of a metal head and a metal case, where the sensing element for temperature measurement (sensor) is placed. An integral part of the head is M12 series connector to which the sensor power supply cable and the digital output signal are connected according to the sensor type.

SD 185K - DS 18B20 communication protocol, communication via the 1-Wire bus.

The temperature range of sensor use is defined in the table of technical parameters. The sensors meet the ingress protection of IP 65 according to EN 60529, as amended. The temperature sensor with a stem and stainless steel head and digital output 1-Wire / DS 18B20 - SD 185K is 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

stainless steel thermowell JS 130
metal holder K120
lead-in connector CONEC 43-00092 connection cables with a straight RKT connector or right-angled RKWT orPRKWTconnector
screw with collet or cutting rings – if different lengths of stem immersion of the temperature sensor are set

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	SD 185K
Output signal	1-Wire / DS18B20
*Measuring range )**	-40 to 125 °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 70 °C relative air humidity: max. 100% atmospheric pressure: 70 to 107 kPa
Ingress protection	IP 67 in accordance with EN 60529, as amended
Resistance to pressure (impact on the stem with the medium)	withouth a thermowell PN 25 with a thermowell PN 63
Time response	τ_0.5 < 9 s (0.2 m/s^-1 in running water)
Standard lenght of the stem	70, 120, 180, 240, 300, 360, 420 mm
Diameter of the stem	6 ± 0.1 mm
Material of the stem	stainless steel DIN 1.4301
Insulation resistance	> 200 MΩ at 500 V DC, 25°C ± 3 °C; humidity < 85 %
Type of the connector	RSFM4 - M12- Lumberg
Material of the connection head	stainless steel DIN 1.4301
Dimensions of the connection head (withouth a connector)	D 21.7 x 23 mm
Weight	min. 100 g

*) by extending the stem length by 60 mm above the thread, the temperature sensor SD185K can be used up to 200 °C.

MAXIMUM SPEED OF WATER / AIR FLOW OR WATER VAPOUR FLOW WHEN MEASURING THE TEMPERATURE IN THE PIPELINES:

Length of the case in mm	Flow speed of water / air without a thermowell	Flow speed of water / air with a thermowell
up to 60	2 / 20 m^-1	3.5 / 35 m^-1
> 70 to 120	1.5 / 15 m^-1	3.0 / 30 m^-1
> 120 to 180	1.0 / 8.0 m^-1	2.0 / 15 m^-1
> 180 to 240	0.6 / 2.5 m^-1	1.2 / 5 m^-1
> 240 to 420	0.3 / 0.6 m^-1	0.8 / 1.6 m^-1

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

Rozměrový náčrt

Schéma zapojení

Modifikace

variable stem design in the area - L1 length, material, diameter, possibility of threaded design
the legth of the sensor cable for the version with a grommet
thermowell thread type

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