Memosens CPL53E

2

Endress+Hauser

Function and system design

Measuring principle

pH measurement

The pH value is used as a unit of measurement for the acidity or alkalinity of a medium. The

membrane glass of the electrode delivers an electrochemical potential that depends on the pH value

of the medium. This potential is generated by the selective accumulation of H+ ions on the outer

layer of the membrane. As a result, an electrochemical boundary layer with an electrical potential

difference forms at this point. An integrated Ag/AgCl reference system serves as the required

reference electrode.

The measured voltage is converted to the corresponding pH value using the Nernst equation.

Measuring system

1

2

3

A0047843

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Measuring system

1

Transmitter CML18

2

Smartphone with Smartblue app (optional)

3

Memosens CPL53E

Communication and data

processing

Communication with the handheld device

Always connect digital laboratory sensors with Memosens technology to a handheld device

with Memosens technology, e.g. CML18.

Digital laboratory sensors can store measuring system data in the sensor, including:

• Manufacturer data

• Serial number

• Order code

• Date of manufacture

• Calibration data

• Calibration date

• Number of calibrations

• Serial number of the handheld device used to perform the last calibration or adjustment

• Application data

• Temperature application range

• pH application range

• Date of initial commissioning

Input

Measured variable

pH value

Temperature