DW CROMPTON POTENTIOMETER PDF

Meztikazahn There is also a single turn circular slide wire. A centre zero type galvanometer is included in the circuit to indicate deflection. With the protective resistance in the circuit, the potentiometer is balanced by means of the main dial and the slide wire. Get best deals for coconut. Crompton Potentiometer Modern laboratory type potentiometers use calibrated dial resistors and a small circular wire of one or more turns, thereby reducing the size of the instrument.

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Arashishicage When the cromptn switch S is thrown to position x 0. A drop of 1. The protective resistance is kept in the circuit in the initial stages so as to protect the galvanometer potentiomwter being getting damaged.

As the balance is approached, the protective resistance is shorted, and final adjustments are made to obtain true balance. Some of the features are explained below: This potentiometer is provided with a double throw switch which allows the connection of either the standard cell or the unknown emf to be applied to the working circuit.

The circuit of a single potentiometer may be modified in a simple way to add a second range, which is usually by a second factor, such as 0. Crompton Potentiometer This completes the standardisation process for the potentiometer. There is also a single turn circular slide wire. The standardisation should be again checked after the completion of the measurement. Get Best Price Request a quote. You can download this article as pdf, ppt.

The potentiometer is used to monitor the value of temperature where a thermocouple is employed. In order to operate the galvanometer at its maximum sensitivity provision is made to short the protective resistance when near the balance conditions. The value of the compensating resistors is such that the resistance of the potentiometer circuit, as viewed from terminals, where the unknown emf is applied, remains constant irrespective of the position of potentiomeher sliding contacts. This potentiometer is provided with an independent standardising circuit AD which can be set on any range of standard cell emf from 1.

Product Description Our company is devotedly engaged in supplying a wide assortment of Crompton Potentiometer that is designed using the latest technology. The first dial measures upto 1. If a third range of x 0. A centre zero type galvanometer is included in the circuit to indicate deflection. Thus a considerable change in standard cell emf owing to temperature changes can be allowed for the operation of the circuit below. The switch S is thrown to the calibrate position and the galvanometer key is tapped while the rheostat is adjusted for zero deflection on the galvanometer.

The output of the thermocouple is fed to the unknown emf terminals. The dial settings are kept exactly the same as in the original standardisation process. If this is not done the voltage drop in switch contact resistances and leads would render the converge of middle dial to less than 0. The following steps are used when making measurements with the above potentiometer: With the protective resistance in the circuit, the potentiometer is balanced by means of the main dial and the slide wire.

Reasonably rapid changes in galvanometer the indication can be followed with ease which is impossible to take with conventional potentiometers. These difficulties to get pogentiometer results mainly arise because of lack of uniformity of slide wire and the difficulties in maintaining the contacts in good shape. The resistances of the middle dial shunt two of the coils of the first dial. Provided in different specifications, this range is used for various medical and commercial applications.

The combination of dial resistors and the slide wire is set to the standard cell voltage. There is no slide wire. Single range potentiometer using independent calibrating circuit. Crompton Potentiometer Get Latest Price. This process does not disturb the measuring circuit while convenience and speed of measurements are increased.

The value of the unknown emf is obtained by adding the galvanometer reading to the main dial setting. Related Posts

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Vuzragore These EMFs can be minimised only by special construction i. Nature of Business Manufacturer. Final adjustments are made for potentipmeter deflection with the help of the rheostat. Construction and Working of basic slide wire dc Potentiometers. Find more suppliers in Faridabad Carbon Potentiometer in Faridabad.

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DW CROMPTON POTENTIOMETER PDF

Duzilkree There is no slide wire. This provides a means of standard cell balance resistance to suit the emf value of the particular standard cell used. This unit has been specially designed for hospitals and physiotherapy centers where the machine is required to run constantly for many hours to survive with the rush of patients. This is essential so that once the instrument has been calibrated on x 1 range, calibration of the x 0. Brooks deflectional potentiometer is used for applications where the voltage to be measured is continuously changing, with a conventional type of potentiometersit becomes impossible to obtain exact balance even when the changes are slow since it is difficult to follow the changes by manipulation of the dials.

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Provided in different specifications, this range is used for various medical and commercial applications. Amarnath Reddy I am a graduate in electrical engineering and blogger by passion. A centre zero type galvanometer is included in the circuit to indicate deflection. This potentiometer is provided with an independent standardising circuit AD which can be set on any range of standard cell emf from 1. The galvanometer circuit includes a set potentiomerer compensating resistors R 1R 2. The standardisation should be again checked after the completion of the measurement.

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Arashishicage When the cromptn switch S is thrown to position x 0. A drop of 1. The protective resistance is kept in the circuit in the initial stages so as to protect the galvanometer potentiomwter being getting damaged. As the balance is approached, the protective resistance is shorted, and final adjustments are made to obtain true balance. Some of the features are explained below: This potentiometer is provided with a double throw switch which allows the connection of either the standard cell or the unknown emf to be applied to the working circuit. The circuit of a single potentiometer may be modified in a simple way to add a second range, which is usually by a second factor, such as 0. Crompton Potentiometer This completes the standardisation process for the potentiometer.

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