AC bridges are often used to measure the value of an unknown impedence for example self/mutual inductance of inductors or capacitance of capacitors accurately. A large number of AC bridges are available for the accurate measurement of impedences. An Anderson's Bridge is an AC bridge used to measure self inductance of the coil. It is a modification of Wheatstones Bridge.
The various sensors which is used to measure the temperature are thermocouple, RTD, Thermistor etc. Due to the salient features of thermocouple, it is being widely used in industries. Based on the thermoelectric principle, it senses the temperature of the medium. The two junction temperature difference is directly proportional to the generated emf, which is a measure of temperature.This unit…
The Kelvin double bridge is one of the best devices available for the precise measurement of low resistances. It is the modification of wheatstone bridge by which the errors due to contact resistance and lead resistances are eliminated. This bridge is named double bridge because it contains a second set of ratio arms. An interesting variation of the Wheatstone bridge…
Load measurement can be done by using a variety of transmitter proper signal conditioning. Use of strain gauge for such a purpose can be studied using this trainer. This Load cell trainer is designed to measure the pressure of the cylinder by using a diaphragm as a primary transducer and strain gauge as a secondary transducer.
The measurement of position employs a major role in industrial applications. Such that they require steel rolling mills, radio astronomy and numerically controlled machine tools, an accurate control on the positioning of the respective equipments in use.
The maxwell bridge is used to measure unknown inductance in terms of calibrated resistance and capacitance. Calibration-grade inductors are more difficult to manufacture than capacitors of similar precision, and so the use of a simple "symmetrical" inductance bridge is not always practical. Because the phase shifts of inductors and capacitors are exactly opposite each other, a capacitive impedance can balance…
Alternating current bridges are of outstanding importance for measurement of electrical quantities. Measurement of inductance, capacitance etc may be made conveniently and accurately by employing AC bridge networks. An AC bridge is an improved version of the wheatstone bridge and consists of a source of excitation and a detector sensitive to small alternating potential differences. The schering bridge is one…
The relationship between stress and strain is one of the most fundamental concepts from the study of mechanics of materials and is of paramount importance to the stress analyst. In experimental stress analysis we apply a given load and then measure the strain on individual members of a structure or machine. Then we use the stress strain relationships to compute…
This setup is a table top model, it comprises of source and measuring tank. The measuring tank is of stainless steel with liters graduated. A small FHP pump is fitted to circulate the water.The digital flow sensor is used to measure the flow rate in terms of Pulse /sec then calibrated to liters /min. A rotameter is provided to measure…
The Wheatstone bridge served for a long time as the most accurate way of measuring resistance. In today's information age the Wheatstone bridge has gained additional significance as part of data acquisition subsystems for supplying information such as temperature, pressure, force, and flow values to computer interface circuitry in a variety of applications. To appreciate the need for measuring these…
