Set-up for in-line measurements by means of sanitary sampling valves
The sensor under test is tested by pumping electrolyte from an external source via the reference sensor and into the pipe with the sensor under test. The conditions for using this procedure are that the sensor under test can be isolated from the process-flow by means of suitable 3-way valves.Set-up for measuring on a sample valve outlet The sensors under test are installed in a process-line. The electrolyte for the reference sensor is taken from a nearby sample valve. It flows trough the measuring chamber of the reference sensor.
When used for test of ultrapure water, use C-flex tubing (Kemotron type 70735) with low gas permeability. | Set-up for measurement comparing two closed type sensors Two closed type sensors measuring on an electrolyte stored in a beaker. Stirring is applied using a magnetic stirrer. Stirring is necessary to ensure a uniform temperature and a continuous flow of electrolyte passing the electrodes in the sensor bodies. Set-up for user sensor installed in a flow chamber The electrolyte is stored in a reservoir where the reference sensors are immersed. From this reservoir the electrolyte is pumped though the measuring chamber with the sensor under test, and returned to the reservoir. |
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