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Loop Powered Indicator


PLD40 is panel-mounted 2-wire loop powered LED indicator; it requires no external supply as it is powered by its input signal. The indicator measures a 4 - 20 mA analog current signal and displays the process value on a 4-digit LED display. PLD40’s microcontroller technology linearizes the input for greater accuracy; the indicator is accurate to 0.1% of span. The indicator is software-calibrated and user-programmable to perform a linear or square root function on the process value. Optional enclosures for PLD40 include a field-mount IP65 enclosure (completely dust proof and a good level of protection against water) and a flameproof enclosure certified for gas groups I, IIA, IIB and IIC with IP66 rating; completely dust proof and can withstand temporary flooding.

  • 20 mA loop current input
  • Accuracy: 0.1% of span, typical
  • Large 4 digit LED display
  • Linear/square root function
  • User programmable
  • Software calibration - no trimpots
  • Loop voltage drop < 5 volts




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