This pH electrode shows the pH value of the water used in irrigation. Its readings enable the irrigation controller to control acid management. Maintaining the correct pH in the irrigation flow fundamentally helps the plants to optimally assimilate the different nutrients.

To do this, a target pH value is established in the irrigation controller. If the irrigation water has a pH above this level, which is the most common case, the controller will inject acid until the selected value is reached.



Specifications of the pH electrode

  • Integrated in the same probe. It is designed so that the pH measurement electrode and the reference electrode are integrated in the same probe
  • Ease of handling
  • Smaller size
  • Combination glass pH electrode, 12 mm.
  • Ag/AgCl reference sealed with ceramic join.
  • Single Join Reference Design (1X)
  • Standard cap, 3 m cable and BNC connector.

Maintain irrigation water within a reference pH value.

To measure the pH of water, a scale from 0 to 14 is used, in which 7.0 is considered the neutral measurement. Thus, measurements above 7.0 and up to 14.0 indicate that the solutions are base or alkaline solutions. However, they are considered acidic when the pH is below 7.0. The recommended pH for irrigation is between 5.5 and 6.5. The acidity of the water directly influences the plants’ ability to assimilate nutrients.

  • Water with pH that is too high (above 6.5) causes the plant to not be able to absorb the nutrients correctly, since they become insoluble and are retained in the soil
  • pH that is too low (considered very acidic water) can cause problems for plants such as damaging their roots due to acidity, toxicity in the soil and preventing the plant from absorbing nutrients efficiently by dissolving and filtering very quickly

pH probe calibration

  • Connect the pH probe to the Maher Probe Transmitter for data transmission to the irrigation controller. Thanks to this device, the irrigation controller can interpret and act according to the data received.
  • The probe can be calibrated very easily and quickly from the Probe Transmitter. For this, pH 7.01 and calibration solution 4.01 is needed

Technical Specifications

  • pH Range: 0-13 pH
  • Temperature range: -5º to 100ºC
  • Reference system: Ag / AgCl.
  • Reference electrolyte: 3.8 M KCl, saturated with AgCl
  • Type of glass membrane: HT-3, low sodium ion error.
  • Membrane resistance: 100 MΩ.
  • Zero potential: 7.0 pH
  • Materials: Glass and Ceramics.
  • Cap: Fits all laboratory arms
  • Connector: BNC Plug
  • Standard cable length: three-meter low-noise cable.

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