Simex SPT-86L Universal Input Modbus RTU module

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  • Weight
    0.15 kg
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SPT-86L module is an isolated signal converter for temperature and voltage input with Modbus RTU RS485 communications.

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SPT-86L module is the insulated temperature and voltage with Modbus RS485. It has one universal input (Pt 100/500/1000, thermocouples K/S/J/T/N/R/B/E, 0-60 / 0-75 / 0-100 / 0-150 mV). During the measurement one type of input can be used at a time only. The measurement inputs have full linearization of characteristics and automatic compensation of the cold junction temperature in the thermocouple mode. Pt mode handles three methods of connection: 2-, 3- and 4-wire. For the milivoltage input user can choose between linear, square, square root or user defined characteristics. In the basic configuration the measurement, after being processed, is given to the current output, but current output can be also controlled directly thru serial interface.

For configuring and data reading RS-485 (Modbus RTU) interface is used. The device parameters can be set by the S-Config software, directly from PC level. Every unit can be factory pre-configured on request.


  • temperature and voltage transmitter 
  • RTD, thermocouple or millivoltage input
  • RS-485 / Modbus RTU
  • peaks detection function
  • LED indicators for communication and status.
  • Key for resetting communication parameters to original factory default.
  • Windows based configurator software.


  • Power supply: 24V DC (16 - 30V DC), insulated
  • Input signal: Pt100, Pt500, Pt1000; TC type K, S, J, T, N, R, B, E or milivoltage input: 0-60 mV, 0-75 mV, 0-100 mV, 0-150 mV
  • Operating temperature: 0°C ÷ +50°C (standard), -20°C ÷ +50°C (option)
  • Protection class: IP 20
  • Accuracy: ± 0.1%@25°C (for TC N: ± 0.2%@25°C; for TC S, T, R, B: ± 0.5%@25°C)
  • Communication interface: RS-485, 8N1 and 8N2, 1200 bit/s ÷ 115200 bit/s, Modbus RTU
  • Humidity: 0-90%, non-condensing
  • Storage temperature: 10°C ÷ +70°C or -20°C ÷ +70°C (depending on version)
  • Case dimensions: 101 x 22,5 x 80 mm
  • Measurement range depends on input signal: -100°C ~ +600°C for Pt; 100°C ~ +1820°C (B); -100°C ~ +1200°C (J); -100°C ~ +1370°C (K); -100°C ~ +1300°C (N); -50°C ~ +1750°C (S); voltage signal 0-60 mV, 0-75 mV, 0-100 mV, 0-150 mV
  • Mounting: DIN rail 35 mm
  • Min. range depends on input signal
  • Maximum load: 0...(Uz - 9,5V) / 24 mA [kOhm]
  • Software: S-Config software for programming directly from PC You can find in section „Download” in upper menu.
  • Manufacturer PartNo. SPT86L-1H00-1-1-001

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