Oxidation Reduction Potential meters and ORP controllers.


  • Isolated 4-20 ma output scalable to any 100mV unit span
  • NEMA 4X Enclosure
  • Large LCD Screen
  • High Accuracy
  • Wide Power Supply Range
  • High Input Impedance

Industrial ORP Transmitters Description

The industrial ORP transmitter is a 2-wire 4-20 mA ORP transmitter enclosed in a sealed NEMA-4 enclosure. The industrial ORP transmitter has an LCD screen powered by 11 to 80 VDC. The ORP transmitter’s span has selectable ORP values from 100 to 1400 mV units via an internal dip switch. The industrial ORP transmitters use BNC connections for the ORP transmitter’s ORP sensor.

Global Water offers the PC320 ORP Controller to use the ORP transmitter’s output to control pumps or alarms.  Global Water’s GL500 ORP Recorder adds recording capabilities to the industrial ORP transmitters.  The GL500 ORP Recorder connects to the ORPtransmitter’s 4-20mA output to record data. output to record data.

Industrial ORP Transmitters Specifications

Industrial ORP Transmitter:
     Range: -700 to 700 mV
     Resolution: 1 mV
     Accuracy: 1 mV + 1 digit
Span: Any 100 to 1400 mV unit, selectable with internal DIP switch
Input impedance: >1012 ohms
Output: 4 to 20 mA
Operating temperature: -10 to 60 °C
Connector: BNC
Power Source: 11 to 80 VDC
Dimensions: 4.92 x 2.95 x 3.94 (NEMA 4X case)

Industrial ORP Transmitter Options

695ORP Industrial ORP Transmitter (PN# DO0500)
(ORP sensor not included)


600E-ORP Industrial ORP Transmitter Sensor (PN# DO0510)
Industrial ORP sensor: epoxy with BNC connector, Max Temp. 60° C, 3-ft cable.

WQ620-020B Industrial ORP Transmitter Sensor w/threads (PN# HB0635)
Industrial ORP sensor: CPVC with BNC connector, Flat surface, 3/4 inch MNPT, DJ, 20-ft cable.


6309POT pH/ORP Controller

ORP15A Handheld ORP Meter

pH 3110 Water proof pH/ORP meter w/case & accessories

Lab 850 Benchtop pH meter

ProLab 1000 Bench top pH meter

ProLab 3000 Laboratory pH meter

inoLab® 7110 wastewater pH meter

WQ600 ORP/Redux Sensors

GL500 ORP Recorder
ORP recorder for ORP sensor datalogging.  Includes Global Logger Software.  With weather proof enclosure and 12V battery.

PC320 ORP Controllers

WQ Water Quality Sensors