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Potentiometric Transmitter is mounted directly on the dial and pointer of the potentiometer is coupled to the instrumentl pointer. The pressure gauge gives signal of change in resistance value as the pointer deflects. The standard range of Change in I Resistance is 100 Ohms for full scale pointer deflection. Also available potentiometer transmitter with output 4 to 20 or 0 to 20 milliamps. These gauges are available in dial size 150 mm and in all standard ranges.