Accurate resistance bridges are used to measure the ratio between the resistance of standard platinum resistance thermometers (SPRTs) and a reference, or standard, resistor at the level of K in temperature terms, and as such play a critical role in the realization and. Accurate resistance bridges are used to measure the ratio between the resistance of standard platinum resistance thermometers (SPRTs) and a reference, or standard, resistor at the level of K in temperature terms, and as such play a critical role in the realization and. Many precision sensors are formed from a Wheatstone bridge circuit configuration. This circuit configuration enables accurate differential measurements for resistive elements. These elements can be used to measure weight, pressure, temperature, and a variety of other types of sensor parameters. When the measured voltage VG is 0, both legs have equal voltage ratios: R2 / R1 = Rx / R3 and Rx = R3R2 / R1. Section 4 focuses on the detailed application circuits relating to strain gage-based sensors. Sections 2 and 4 can be read sequentially if the reader already. A bridge circuit is a topology of electrical circuitry in which two circuit branches (usually in parallel with each other) are "bridged" by a third branch connected between the first two branches at some intermediate point along them.
