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EM-M21A Pt-100 TO 4...20 mA CURRENT LOOP CONVERTER

EM-M21A is a multiscale converter for thermal transducer Pt-100. Pt-100 transducer is connected to converter with three wires. In this way the cable resistance is compensated. The converter has four selectable temperature ranges and a -50 °C settable offset. The gain and zero adjustments have no mutual effect. The output signal is 4...20 mA current signal, and the unlinearity of the Pt-100 is already corrected in the converter. The converter acquires its operating voltage from the current loop and needs no additional supply. EM-M21A can be connected as a voltage transmitter 1...5 V according to the figure below. Converter is efficiently protected against misconnections and voltage surges.


 

EM-M21A

Technical data

Supply 12...32 Vdc
Temperature ranges  0...100 °C
  0...200 °C
  0...300 °C
  0...400 °C
  -50...+50 °C
  -50...+150 °C
  -50...+250 °C
  -50...+350 °C
Output signal  4...20 mA / 1...5 V
Linearity error  < 0.1 %
Thermal drift  < 100 ppm/°C
Cable compensation  0.1 %/ 10 ohm (Rc
Transducer supply  appr. 1 mA
Loop resistance  0...700 ohm ( 24 V )
Oper. ambient temp. 0...60 °C

Product PDF

Stock

  • 84 pcs. in stock

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