The output impedance depends upon the frequency used. Advantages. Resistive & Capacitive Transducers Presented To: Presented By: Overviews. Disadvantages: The capacitive transducers are temperature sensitive. Advantages of Resistive Transducer. The piezoelectric transducer is available in desired shape. Disadvantages of Electrical Transducers . There are a number of ways because of which the resistance of the metal changes with the changed in the physical phenomenon. Where R – resistance in ohms. It is otherwise called as resistive sensors. The following are the advantages of the resistive transducer. The resistive transducers are available in various sizes and they have a considerably high amount of resistance. Passive Type Transducers. Required fields are marked *. The primary transducer changes the physical quantities into a mechanical signal, and secondary transducer directly transforms it into an electrical signal. Your email address will not be published. The capacitance pressure transmitter is a pressure measurement device, . AC response only. Some resistive versions require a stylus input instead of finger pressure. Disadvantages of Capacitive sensor. Hope it helps. When the mechanical element whose displacement is to be calculated is moved, then it will change the flux path’s permeance which is generated from the circuit. The resistive transducer gives the fast response. Stray capacitance may arise. Fast response The variable resistance transducers are one of the most commonly used types of transducers. It needs regular caliberation in order to use perfectly and take perfect reading. In silicon the piezoresistive effect is used in piezoresistors, transducers, piezo-FETS, solid state accelerometers and bipolar transistors. A lot of power is wasted in moving the sliding contacts. It has rugged construction. The applications of transducers based on the electric parameter used and the principle involved is given below. The resistive transducer is used for measuring the physical quantities like temperature, displacement, vibration etc. It has good frequency response. An increase or decrease in temperature to a high level will change the accuracy of the device. Disadvantages of an Electrical transducer: The electrical transducer is sometimes less reliable than mechanical type because of the ageing and drift of the active components. The measurement of capacitance is hard compare to measurement of resistance. High output impedance. The sliding contacts can produce a lot of noise. The frame of the capacitor requires earthing for reducing the effect of the stray magnetic field. What is the capacitive pressure transducer? Applications. wiper. The variable resistance transducers are also called as resistive transducers or resistive sensors. Some of the major disadvantages of resistive transducers are: A lot of power is wasted in moving the sliding contacts. The circuit o/p can be directly adjusted against the input value. It takes 10 s for the transducer to reach equilibrium condition (5 times constant). The advantages of the inductive transducer include the following. When there is a change in temperature, the temperature coefficient of the resistive transducer changes which can be used to determine the change in temperature. It is not suitable for measurement in static condition 2. Disadvantages. 9AEI306.76 25 Disadvantages • Limited to moderate pressures • Float design should be considered for liquids with suspensions 26. Vibration sensitive. L – Length of the conductor in meter square. The capacitance may get changed by dust particle and moisture which produce error. The process of variation in resistance is widely used in the industrial applications. Save my name, email, and website in this browser for the next time I comment. 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