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RS485 Modbus temperature probe - plastic connection head

Reference GSD122R

Delivery in 3 to 5 weeks
  • Temperature sensors with stainless steel tube.
  • Plastic head with RS 485 / MODBUS - SD 102 digital output.
  • Measures the temperature of gaseous substances and liquids.
  • Easy to mount thanks to the unique "S-head" design.

Product features RS485 Modbus temperature probe - plastic connection head


This sensor includes plastic head and stainless steel tube in which a temperature sensor is placed. In the head is a terminal block or a converter with a terminal block, to which the power cable intended to supply the sensor and to the digital output signal are connected via a cable gland and a connector. 

SD 122,  protocol communication SD 122K MODBUS/RTU, communication RS485

The temperature range of the sensors is defined in the table of technical parameters for each variant. The sensors comply with the protection class IP 65 Complies with modified EN 60529. 

The sensors are designed for operate in a chemically non-aggressive environment, the method of use should be selected according to the temperature and chemical resistance of the sensor head.

The sensor is manufactured as a variant:Modbus RS485 temperature probe

  • SD 122 - the control structure corresponds to the ModBus RTU communication protocol.


  • central plastic support
  • stainless steel thermowell JS 130
  • central metal support
  • screw with collar or cutting rings - if different immersion lengths of the temperature sensor are set


  • The manufacturer provides an EU declaration of conformity.
  • Calibration - The final metrological control - comparison with standards or working instruments - is carried out for all products. The continuity of standards and work measurement instruments is ensured within the meaning of article 5 of Law No. 505/1990 on metrology. The manufacturer offers the possibility of supplying the calibrated sensors.
  • Features
  • Cable schematics
  • Dimensional draft
  • Download
Sensor type GSD 122R
Power source 10 to 35 V DC (not stabilized) 12 to 24 V AC
Energy consumption max. 1000mW
Measuring range -50 to 150 ° C
Communication properties communication via RS 485 maximum segment length is 1200 m, asynchronous transfer
preset transfer speed 9600 Bd optional transfer speeds 1200, 2400, 4800, 9600, 19200, 57600, 115200 Bd - DIP switch
247 modules / 1 serial port
ModBus RTU protocol 1 stop bit, no parity
Electronics accuracy *) ± 0.2 ° C
Type / precision of the sensitive element *) Pt 1000 / ± (0.3 + 0.005 | t |)
Resolution 0.01 ° C
Ingress protection IP 65 according to EN 60529
Standard rod length 70, 120, 180, 240 mm
Sensor rod material DIN 1.4301 stainless steel
Connection head material POLYAMIDE
Working conditions ambient temperature: -30 to 70 °C
relative humidity: max. 85% (at room temperature 25 ° C)
atmospheric pressure: 70 to 107 kPa
Weight 0.2 kg

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