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. It … to understand the working principle, consider a conductor rod. The resistive transducer can be defined as; the resistance of a transducer can be changed due to the effects of the environment. hinders the capacitance of the transducers. When we apply strain on the resistor, the resistance changes. They are quite affordable and can be easily available in the market. Required fields are marked *. And this property of conductors is used for measuring the physical quantities of material. The output is low so some external circuit is attached to it 4. The variation of resistance R with temperature t can be represented by the equation, Where α is the temperature co-efficient at t 0 and R 0 is the resistance at t 0. Strain gauge comes in large variety or shapes and sizes. It is small in size. It measures temperature, pressure, displacement, force, vibrations, etc. For a strain gauge cancelling can be achieved by using a full bridge. Capacitive touchscreen devices are typically handheld and connect to networks or computers via an architecture that supports various components, including satellite navigation devices, personal digital assistants and mobile phones. The resistive transducer converts the physical quantities into variable resistance which is easily measured by the meters. The following are the advantages of the resistive transducer. sawakkincsem sawakkincsem Strain gauge: It is a device used to measure the Strain or deformation of an object. They can be used for measuring various physical quantities like temperature, pressure, displacement, force, vibrations etc. High output impedance. The sensitivity of capacitive transducer is high. Disadvantages: There are some disadvantages of piezoelectric transducer which are given below, The piezoelectric transducer is used for dynamic measurement only. The resistive transducer gives the fast response. The measurement of the physical quantity is quite difficult. The variable resistance transducers are one of the most commonly used types of transducers. The transduction element of capacitive transducer is a capacitor which may be a parallel plate, cylindrical or angular capacitor. Wide temperature range. It needs regular caliberation in order to use perfectly and take perfect reading. The resistive transducer element works on the principle that the resistance of the element is directly proportional to the length of the conductor and inversely proportional to the area of the conductor. Save my name, email, and website in this browser for the next time I comment. 9AEI306.76 25 Disadvantages • Limited to moderate pressures • Float design should be considered for liquids with suspensions 26. The resistive transducer can be used to give very quick results. It is one of their biggest disadvantages Rugged. The sliding contacts can produce a lot of noise. The process of variation in resistance is widely used in the industrial applications. It is affected by temperatures 3. The circuit o/p can be directly adjusted against the input value. High sensitivity. The inductive transducers work on the principle of the magnetic induction of magnetic material. A capacitive touch panel is a control display that uses the conductive touch of a human finger or a specialized device for input. The resistive transducer is designed by considering the variation of the length, area and resistivity of the metal. One disadvantage of wire strain gauges is their resistance also changes with temperature which can lead to noisy or incorrect data. Where R – resistance in ohms. Definition: Capacitive Transducer is a device which changes its capacitance with change in the physical phenomena to be measured. Also the sensing elements and the associated signal processing circuitry are comparatively expensive. Advantages/Disadvantages of Inductive Transducer. Stray capacitance may arise. The frame of the capacitor requires earthing for reducing the effect of the stray magnetic field. The sliding contacts can produce a lot of noise. The advantages of the inductive transducer include the following. It modifies the inductance of the circuitas well as the equivalent output. We can use both AC or DC for calculating the change in resistance. It has rugged construction. The resistive transducer can function as a potentiometer where the resistance of the transducer can be varied by changing the length of the. 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