Whats special about the Thermo Electron Foam Sensor?
The Thermo Electron Foam Sensor came out of a research programme carried out by Shell Research Ltd at a biological sciences research centre. This was part of a requirement to develop new sensors for Shell’s various biotech facilities. After much development work, the result was a sensor which could operate reliably even with severe levels of fouling. The sensor operates by measuring the electrical impedance of the material filling the headspace of the vessel. It is the unique dual electrode system which enables the sensor to withstand fouling. The upper guard electrode electrically isolates the area above the sensor, thereby preventing leakage currents from causing false triggers. Only foam build up beneath the sensor activates the controller enabling remedial action to be taken. This is truly a sensor which works consistently and reliably, and requires very little maintenance. 7. How Foam is Dispersed Once the foam is sensed something has to be done to prevent it getting out of contro
