OR-1000A Oxygen Reduction Potential Sensor

The Greenspan OR-1000A is a fully submersible ORP sensor, well proven to withstand harsh field conditions. The sensor requires a low voltage power supply and provides a calibrated 4–20 mA output. OR-1000L logging ORP sensor is also available

  • Innovative, optically isolated signal conditioning
  • Field proven platinum electrode
  • Innovative replaceable reference protection ring
  • Robust, easy clean design
  • Low power energy requirements
  • Wide operating temperature range



Measurement Technique: Platinum electrode with internal reference, Field Replaceable electrode

Sensor range (factory calibrated): +/–500 mV, +/–1000 mV, 0–1000 mV

Sensor output: Analogue 4-20 mA

Power Supply: 11–13.2V DC

Dimensions (L x OD) 364.5 mm × 47 mm (14.35″ × 1.85″)

Additional information

Product Function


Product Type