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Match the entries in Group I with the process parameters in Group II.
Group I Group II P. Clark electrode 1. Liquid level Q. Redox probe 2. Dissolved oxygen concentration R. Load cell 3. Vessel pressure S. Diaphragm gauge 4. pH (anaerobic process)
Codes :
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- P Q R S
2 1 3 4 - P Q R S
4 2 3 1 - P Q R S
2 4 1 3 - P Q R S
2 1 4 3
- P Q R S
Correct Option: C
The Clark electrode is an electrode that measures oxygen on a catalytic platinum surface using the net reaction:
O2 + 4e– + 2H2O → 4OH–
These are also known as dissolved oxygen electrodes.
Redox probe also known as a pH probe is used for the measurement of pH.
A load cell is a transducer that is used to create an electrical signal whose magnitude is directly proportional to the force being measured. It can be used to measure the liquid levels. To measure level, the load cell must be incorporated into the vessel's support structure.
The Diaphragm Pressure Gage uses the elastic deformation of a diaphragm (i.e. membrane) instead of a liquid level to measure the difference between an unknown pressure and a reference pressure.
