Time Response Analysis of Novel Helical Capacitance Level Sensor

Response time is one of the important characteristics of the Capacitance Level Sensor (CLS). It is defined by the time taken for the sensor to respond with respect to change in liquid level. This paper deals with response time analysis as it is related to the steady and dynamic state of the system. Sensor response characteristics alter with respect to steady and dynamic state. Steady and dynamic state of the system is achieved by changing the flow rate of liquid into the process tank. The main objective of the paper is to analyse the steady and dynamic characteristics of novel helical CLS. The results of novel helical CLS of steady and dynamic state is compared with parallel rod and cylindrical CLS. Results show that helical CLS responds quicker as compared to that of parallel rod and cylindrical CLS in both the state analysis because of its novel electrode structure, which easily allows liquid to flow in between the electrodes. Helical CLS responds within 6.89 s, parallel responds by 13.35 s and cylindrical responds by 34.62 s in steady state analysis. Three cases are considered for analysis in dynamic state. Helical CLS shows faster responses in all the three cases as compared to that of other two CLS.