Hach Online Process ORP Sensor - General Purpose, Stainless Steel ORP Sensor

Hach Online Process ORP Sensor - General Purpose, Stainless Steel ORP Sensor
Product #: DRS5
CAD Price: Contact Hach

Exceptional Performance with the Differential Electrode Measurement Technique

This field-proven technique uses three electrodes instead of the two normally used in conventional ORP sensors. Process and reference electrodes measure the ORP differentially with respect to a third ground electrode. The end result is unsurpassed measurement accuracy, reduced reference junction potential, and elimination of sensor ground loops. These sensors provide greater reliability, resulting in less downtime and maintenance.

Lower Maintenance Needs with the Double Junction Salt Bridge

The double junction salt bridge creates a barrier to contamination which minimizes the dilution of the internal standard cell solution. The result is lower maintenance needs and a longer time period between calibrations.

Extended Working Life with the Replaceable Salt Bridge/Protector

The unique, replaceable salt bridge holds an extraordinary volume of buffer to extend the working life of the sensor by protecting the reference electrode from harsh process conditions. The salt bridge simply threads onto the end of the sensor if replacement is needed.

Reliability with Built-in Encapsulated Preamp

Encapsulated construction protects the sensor’s built-in preamp from moisture and humidity, ensuring reliable sensor operation. The preamp in the pHD analog sensor produces a strong signal, enabling the sensor to be located up to 1000 m (3280 ft.) from the analyzer.

Patented Technology

The former GLI, now a Hach Company brand, invented the Differential Electrode Technique for pH measurement in 1970. The pHD™ sensor series (U.S. Patent Number 6395158B1, dated May 28, 2002) takes this field-proven technology to a new level.

What's in the box?

Includes: sensor with 33 ft cable and manual


Body material: Stainless steel
Cable Connection: Digital
Cable Length: 33
Electrode Type: General Purpose
Flow: 3 m (10 ft.) per second, maximum
Mounting: Immersion
Operating Temperature Range: Analog Sensor with Digital Gateway: -5 - 105 °C
  Immersion Sensor: 0 - 50 °C
Range: -1500 - 1500 mV
Sensitivity: ± 0.5 mV
Sensor Cable: Integral
4 conductor cable with one shield and polyurethane jacket; rated to 105 °C (221ºF); 10 m (33 ft.) standard length
Temperature Sensor: Sensor Pressure/Temperature Limits
Digital: 6.9 bar
Transmission Distance: 1000 m (3280 ft.), maximum when used with a termination box
  100 m (328 ft.), maximum