Development and comparison ofModified methods to improve theLinearity of transducerCharacteristics

Abstract

A device which is used for measuring the any physical quantity iscalled as the measuring instrument. These instruments are varied based uponthe application and place. In general, a measuring system accuracy is mainlydepends on the two factors 1. Calibration 2. Linearization. The input-outputrelations of most of the industrial transducers are non-linear in nature. Henceit is felt that irrespective of whether the transducer is used for measurement orcontrol application it should be linearized before put in use.The transducer can also be easily affected by the external andinternal factors. These causes the error in the measurements and acompensation technique is needed to overcome this error. The mostcommonly used technique to overcome this error is called linearization. Thereare so many approaches introduced by the researchers to perform thelinearization of the transducers during the last three decades. Both Hardwareand software linearization methods are available. Existing Hardware methodof linearization suffers from inherent drawbacks. This research is focused onthe linearization of the flow and temperature transducers. The linearizationprocess is based on the compensating circuits, optimization of process forfinding the linearization factor. The optimization is the best and easiestmethod to linearize the transducer based on determining the factor usingequations.The research work is carried out in the three phases and two typesof linearization are performed. newline