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Sensorex SD7500CD-ORP
Universal Differential ORP Probe

Sensorex SD7500CD-ORP Universal Differential ORP Probe

Continuous online ORP monitoring in applications like metal finishing and chrome waste treatment wears down ORP sensors, leading to reference contamination. A differential ORP probe utilizes three electrodes instead of two, which extends the sensor’s working lifetime in challenging applications. Replacing the sensor reference (salt bridge) and buffered electrolyte solution can prevent sensor replacements, saving time and money. The SD7500CD-ORP is a self-powered differential ORP probe, allowing use with any conventional ORP transmitter.

  • Designed for tough applications: True differential measurement technology using solution ground

  • Extended sensor lifetime: Buffered electrolyte reference solution resists fouling

  • High accuracy measurements: Differential measurements virtually eliminate ground loop measurement error

  • Use with any transmitter or controller: Self-powered unit is compatible with any conventional ORP transmitter

  • Resists aggressive chemicals: Constructed of durable Ryton® Polyphenylene Sulfide (PPS)

  • Two Year Limited Warranty: We stand behind our products with the Sensorex guarantee


  • Measurement Range: -2000mV to +2000mV

  • Temperature Range: 0-70° C

  • Pressure Range: 0 – 100 PSIG @ 40° C (PVC fitting); 0 – 100 PSIG @ 60° C (CPVC fitting); 0 – 100 PSIG @ 100° C (stainless steel fitting)

  • Body Construction: Ryton Polyphenylene Sulfide (PPS)

  • Transmission Distance: 3000 ft (914 m)

  • Connector: Tinned Leads

  • Cable Length: 20 feet (6 meters)

  • Installation: 1 1/2? NPT

  • Warranty: Two year limited warranty

Sensorex Process Product Brochure

Specification Sheet for SD7500 Series Universal Differential pH and ORP Sensors

More ORP Sensors

S272CD | S465C | S651CD | S8100 | S8200 | SD7000CD | SD7420CD | SD7500CD


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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