pH Meters

A pH meter is an instrument used to measure acidity or alkalinity of a solution - also know as pH. pH is the unit of measure that describes the degree of acidity or alkalinity. It is measured on a scale of 0 to 14.

The quantitative information provided by the pH value expresses the degree of the activity of an acid or base in terms of hydrogen ion activity. The pH value of a substance is directly related to the ratio of the hydrogen ion [H+] and the hydroxyl ion [OH-] concentrations. If the H+ concentration is greater than OH-, the material is acidic; i.e., the pH value is less than 7. If the OH- concentration is greater than H+, the material is basic, with a pH value greater than 7. If equal amounts of H+ and OH- ions are present, the material is neutral, with a pH of 7. Acids and bases have free hydrogen and hydroxyl ions, respectively. The relationship between hydrogen ions and hydroxyl ions in a given solution is constant for a given set of conditions, either one can be determined by knowing the other.

Styrax manufactures micro processor based pH meter is an economical, user-friendly panel meter for pH measurement. Its small size allows for easy installation and will accommodate any pH electrode with BNC connector. Temperature compensation is either manual or automatic with use of any 1000Ω platinum RTD.

Specifications :

Accuracy ±0.02 pH
Resolution 0.01 pH
pH Input Impedance > 1012Ω
Analog Output Non-isolated - fixed range 0-14 pH = 4-20mA
Operating Temp 0 to 60°C (32 to 122°F)
Storage Temp -40 to 85°C (-40 to 185°F)
Relative Humidity 95% @ 40 °C, non-condensing
Temp. Compensation Manual fixed resistors; Automatic 1000 Ω RTD
Display 4 digit, red LED, 14.2 mm H (0.56")
Display Range 0 to 14 pH
Connections BNC
Power Requirements Voltage: 115 Vac ±15% standard (230 Vac or 10 to 32 Vdc optional)
Frequency: 50 or 60 Hz
Power Consumption 2.5 watts max.


Styrax Instruments India Pvt. Ltd., has been one of the prominent manufacturers and suppliers of Process Measure and Control Systems, Clean room Interlocking Systems, Automation Solutions and hi-tech security and access control systems.

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STYRAX Instruments India Pvt Ltd.
H.No: 2-77, Near Gajularamaram Chowrastha,
Gajularamaram, Hyderabad - 500055.
Telangana, India.
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