PH and REDOX controller: MC125

The MC125 PH and Redox Controller is a combo PH and REDOX controller meter.

It has two coupling sockets to connect external equipment (ozone generator, electro-valve or dosing pump)

The MC125 PH and Redox Controller coupled with a solenoid valve for CO2 and an ozone generator is ideal for aquariums and fish farming.

1/ In its PH function, the MC125 PH and Redox Controller continuously measures the PH and we can attach a solenoid valve or any solenoid valve or dosing pump that will be activated when the controller meter has passed the chosen set point.

In its PH function, the MC125 PH and Redox Controller has a pH scale from 0.0 to 14.4. Its calibration is manual.

Its external equipment control block has a dial to set the set point: from 4 to 8 pH. At the same time that the outdoor equipment is activated, a visual alarm (red LED) will also be activated.

The calibration of the MC125 PH and Redox Controller in its PH function is manual (in 2 points: pH 7.01 and pH 4.01/10.1);

Range: 0.0 to 14.0 pH;

Resolution: 0.1pH;

Accuracy: 0.2pH

pH electrode: MA911B/2, with 2 meter cable, BNC connector (included)

2/ In its Redox function, the MC125 PH and Redox Controller continuously measures the redox potential of your water.

Redox is a method of controlling water quality;

It tells us about the oxidation/reduction potential of water.

a) Aquariums: In fresh water, 250mV and above are considered good values. Sea water values ​​range from 350 to 400mV.

b) Swimming pools: The value necessary to eliminate certain bacteria is 600mV.

c) Wastewater: Redox measurement is mainly used in the detoxification of wastewater, with the reduction of chromate or the oxidation of cyanide.

The MC125 PH and Redox Controller has another coupling socket (in addition to the coupling socket of the PH function), to connect an ozone generator that will be activated when the controller meter has passed the setpoint data that we have chosen.

In its ORP Redox function, the MC125 is factory calibrated. 3/ Installation of the MC125 PH and Redox Controller:

Connect the 12VDC adapter of the MC125 meter

PH and Redox controller to a multi-outlet power strip

Connect the 12VDC transformer to the power and the MC125 monitor

Connect the coupling sockets to the power (2 x White and black socket)

Connect the MA921 Redox ORP probe to the monitor at its ORP connector

Connect the MA911 PH probe to the monitor at its PH connector

Remove the protective caps from the electrodes.

Immerse the pH and Redox electrodes in the water to be measured (2.5 cm) and let them float with the help of a wide polystyrene, for example.

Turn on the meter by pressing the ON/OFF button Choose PH or Redox menu by moving the central black button (Up: ORP Redox; Down: PH)

In both functions, choose the direction of the parameter (Ex.: for PH rising, button in “above” position);

The same in Redox menu.

Set the set point for each parameter, with the help of the graduated wheel for each parameter. Allow the reading to stabilize and the meter will begin continuous monitoring.

A visual alarm indicates the moment the measurement exceeds the set point. When the alarm is activated, the docking base is also activated, and from there the auxiliary equipment is turned on.

PH Calibration:

Go to the PH menu (center black button down)

Immerse the electrode in a sachet of pH7.01 calibration liquid and wait for the data to stabilize.

With the help of the screwdriver, adjust the data to pH7.0

Immerse the electrode in a sachet of pH4.01 or pH10.01 calibration liquid and wait for the data to stabilize.

With the help of the screwdriver, adjust the data to pH4.0 or pH10.01

The meter is calibrated and ready to measure in PH.

It is advisable to calibrate the meter at least once a month, or after a long period of non-use or after changing the electrode.

Good measurements with the MC125 PH and Redox Controller.