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WSPF-RTW - Dual-output RTD Converter

This compact plug-in converter accepts a RTD input and provides optically isolated DC voltage or current outputs.
This converter has a linearizer and a burnout protection circuit as standard equipment which is required to measure temperature.


  • Fine Zero & span adjustment by 15 turn trimmer
  • Zero & span adjustment ±10% full scale
  • Safe design by dielectric strength of 3000Vac
  • 5 years warranty, long life
  • CE approved
  • Linearizer and Burnout protection circuit built-in
  • High accuracy at 0.1% FS, Response time 25ms

Common Specifications

Accuracy : ±0.1% FS (at 23°C)
Response time : Approx. 25ms (0 to 90%)
Allowable load : Current output
    First output : 15V or less of voltage drop between output
    Second output : 7V or less of voltage drop between output
  Voltage output
    Load current 5mA or less
      *1μA or less if the output is less than 1V FS
Zero & Span adjustment : ±10% FS (15 turn trimmer)
Operating temperature : -5 to +55°C
Storage temperature range : -10 to +60°C
Operating relative humidity : 90% or less (Non-condensing)
Temperature coefficient : ±0.015% FS of span per °C
Linearization : Available
Burnout protection : Upscale (less than 1.5sec) *Please contact us for downscale
Isolation : Between input, output, and power supply
Insulation Resistance : 100MΩ or more with 500Vdc megger
  Between input, output, and power supply terminal
Dielectric Strength : 3000Vac for 1 minute between power supply and
  input/output terminal,
  2000Vac for 1 minute between input and output terminal
Power Consumption : Approx. 5.6VA (AC), Approx. 90mA (DC)
Power supply variation : ±0.1% FS (within the range of rated voltage)
Dimensions : 84(H) X 29.5(W) X 106.5(D)mm
Weight : Approx. 150g
Structure : Plug-in (Body part and socket part)
Connection : M3 SEMS screw part of the base socket (Tightening torque 0.6N·m)
Mounting : DIN rail or wall surface
Case color and material : Ivory, ABS resin, flame retardant grade UL94V-0
EMC directive : EN61326-1, EN61010-1, EN50581
  Installation category : II, Pollution degree : 2
Rated altitude : 2000m or less

Download Data Sheet
Download Data Sheet