Redox controller range from AWE Ltd for measuring and controlling Redox or ORP in a process

Redox Controller Range

The our AWE Direct Redox controllers are available in similar configurations to our pH controller range. We offer our instrumentation in both Surface Mounted Redox Controller configuration and as a Panel Mounted Redox controller configuration.

All of our Redox instruments in our panel mounted Redox controller range are available in an optional enclosure for Surface Mounted Redox Controller configuration. The surface mounted instruments are denoted with a -W, so the P7635-W is surface mounted where the P7635 is panel mounted.

Our AWE Instruments Redox controller range is designed to offer instruments for use as either "stand-alone Redox control units" or with the ability to be integrated as part of a larger system.

Measuring Redox using a Redox Electrode

For increased accuracy and precision measurement of Redox values we recommend that you pair your Redox instrument with a Redox electrode from our range. The Redox controllers are all compatible with our range of Redox electrodes and we can ensure that with a quality sensor the redox measurement won't be compromised.

Redox Measurement and Control.

From the measured Redox value our range of Redox Controllers have a number of ways of controlling control equipment. This is normally conducted using one of the in-built On / Off control relays, which are common on each of our listed Redox Controllers.

Most of the controllers within our Redox Controller range incorporate 2 On / Off control relays.

The P7635, P7335, P3647 and M05 range of instruments are fitted with 2 On / Off control relays.

We also offer the following proportional control options for controlling precision control equipment such as metering pumps or actuated control valves.

Redox Controller with Proportional Control Relays (PFM or Pulse Frequency Modulation)

Our model of P7685.010 and P7685 can both be classed as including proportional control relays. They both include 2 x control relays which can offer PFM control (Pulse Frequency Modulation) or the user can select them to operate with PWM control (Pulse Width Modulation). The Pulse Frequency Modulation or PFM relays allow for the proportional control of our of dosing pumps.

Redox Controller with Proportional Control Relays (PWM or Pulse Width Modulation)

Our P7685.010 and P7685 pH controllers can be used with either one or both of their relays acting as PWM control relays (Pulse Width Modulation Relays.)

The M05 pH controller can use one of its 3 control relays as a PWM Control relay for the proportional control of solenoid valves.

Redox Controller with expandable 4-20mA current output

Our Redox Controllers with an expandable 4-20mA current output are able to give a value within the Redox range (hypothetically 0mV) a value of say - 20mA and then another value (hypothetically 500mV) 4mA. The 4-20mA current output is then scaled across the output. (In our 0mV - 500mV example - a value of 250mV would correspond to 12mA)

Using a Redox Controller with an expandable 4-20mA current output is very useful in a number of applications. Historically they has been used to control the output flow rate of a dosing point when the Redox value indicates a greater requirement for an oxidising biocide, as well as being used with a PLC to give greater granularity of a measured Redox value when a narrow Redox range needs to be very precisely monitored in aquaculture applications.

Please note that the P7635, P7335 and P3647 can only use the 4-20mA across the full 0 ± 1000mV range for digital chart recorder, data logger or PLC applications. It cannot use the 4-20mA output for proportional control of our dosing pumps.

Redox Controller Range


R3647

R3647

The R3647 is an easy to use Redox controller offering precision Redox measurement.

Incorporating 2 control relays along with delay timer and an isolated 4-20mA output, the R3647 Redox controller can measure the redox value of a solution accurately, and using the relays, a suitable control device such as a solenoid valve or design pump can be called to begin or stop functioning. The isolated 4-20mA can feed into a suitable digital chart recorder to monitor the change in values.

The R3647 is operated from 110 VAC or 240 VAC supply and is offered in Din Rail mounting configuration for system integration or surface mounted enclosure for a stand alone application.

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P7335

P7335

The P7335 is a powerful Redox controller in compact sized casing.

Offering precision measurement and a bright LCD (liquid crystal display) the P7335 offers 2 control relays with on / off control, an isolated 4-20mA output and simple 4 push button operation for setup and calibration.

The P7335 is user selectable for either pH or Redox measurements

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P7635

P7635

The P7635 is a Redox controller with 2 control relays and isolated 4-20mA output and is ideal for panel mounting.

Also available in surface mounting configuration the P7635 offers 2 control relays which can be set to high or low set points, an alarm set point of the instrument is out of the desired Redox range and an isolated 4-20mA output to integrate with a PLC or datalogger.

The P7635 has 8 front mounted push buttons for easy calibration and configuration and is user selectable for either pH or Redox measurements

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P7685

P7685

The P7685 panel mounting Redox controller is a feature packed instrument designed for precision measurement and control of Redox in a process.

With 2 x set-points and associated control relays, the P7685 can operate in either PFM (Pulse frequency modulation) mode to proportional control a dosing pump or PWM (Pulse width modulation) mode for proportional control of solenoid valves.

The P7685 also offers proportional control through an invertible and expandable 4-20mA control signal which can be connected to compatible control equipment such as dosing pumps or actuated valves.

There are plenty more features and functions within the P7865 too - visit the product page for more information. The P7685 is user selectable for either pH or Redox measurements

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P7687

P7687

The P7687 Redox controller is a panel mounting controller with dual isolated 4-20mA outputs, control relays and an alarm relay. 

Suitable for use with either a Redox mV Electrode, pH electrode, or aAntimony pH Electrode, with automatic temperature compensation for pH measurements.

A sophisticated control instrument - the P7687 offers on / off control, proportional control from PFM or PWM control relays, or can operate using full PID (Proportional, Integral and Derivative) control.

The P7687 is user selectable for either pH or Redox measurements.

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P6587

P6587

he P6587 Redox controller is a surface mounting Redox controller designed to IP65 specifications for indoor or outdoor usage.

Inside the surface mounted controller the P6587 offers dual isolated 4-20mA outputs, control relays and an alarm relay. 

Suitable for use with either a Redox mV Electrode, pH electrode, or aAntimony pH Electrode, with automatic temperature compensation for pH measurements.

A sophisticated control instrument - the P6587 offers on / off control, proportional control from PFM or PWM control relays, or can operate using full PID (Proportional, Integral and Derivative) control.

The P7687 is user selectable for either pH or Redox measurements.

 

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