Pt100 Modbus Converter

Pt temperature sensorPeripheryModbus RTU
Pt100 Modbus Converter

Pt100 Modbus Converter


  • industrial weather station
  • process technology
  • building technology
  • SCADA system
  • solar power plants
Ian FörstermannIan Förstermann

Your contact person:
Ian Förstermann
+49 551 4958-344


From analog signal to industry standard

The Pt100 Modbus converter acquires the measuring signal of a Pt100 temperature sensor and makes the measured value available for interrogation via Modbus RTU (RS485). Due to the simple address assignment from 1...99 by code switches, up to 99 temperature sensors can be quickly integrated into a bus. Like the other Lambrecht Modbus RTU sensors, the Pt100 Modbus converter also has autoconfiguration registers (mapping). Thus it can be automatically recognized by the data logger met[LOG] and created for the measurement with just one push of a button.

Connectable sensors:
00.08290.000030 Module temperature sensor
00.08280.010507 Air, soil and water thermometer Pt100, 1/3 DIN
00.08281.008005 Air temperature sensor Pt100, 1/3 DIN
00.08241.000000 Grass temperature sensor with protection device

Professional Line
Pt100 Modbus Converter
Address switch:
2 address switches for 10 + 1 · max. bus users: 99
6,2 x 92 x 101 mm
Power supply:
50 Hz (1 min.)
RS485 bus:
no galvanic isolation
approx. 30 g
Max. power consumption at 24 VDC:
300 mW
DIN rail 35 mm, EN 50022
Measuring rate:
1 measurement/s
EMC standards / Electrical safety:
EN 61326, EN 55011, CISPR11 Kl. B, EN 61010-1
Environmental conditions:
-40...+80 °C
1,5 kV
Supply voltage:
18...30 VDC
Measuring range:
-40 ... +80 °C
Sensor supply Pt100:
1 mA
Software protocol:
Protection class:
IP 20
Max. line resistance:
10 Ohm/line
Data format:
19200, 8, E, 1
Connection technology:
4-wire, screw terminals, conductor cross section max. 2.5 mm2
Temperature sensors

are the objects to be measured and the starting point for the right choice of sensors. The soil sensor (828) is water­proof and is used to measure air, water and soil temperatures precisely. Instrument (8241), which includes radiation protection and a mounting rod, is best suited for measuring temperatures about 5 cm above ground (grass level). For measurement of air temperatures in higher areas, sensor (8281) is most suitable.

  • world-wide popular standard measuring elements
  • robust and corrosion resistant through stainless steel housing
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