Inst Tools - Instrumentation, Electrical, PLC Tutorials

RTD Sensor Connections

Proper connections for all three types of RTD sensor (2-wire, 3-wire, and 4-wire) to a user configurable transmitter are shown

A compromise between two-wire and four-wire RTD connections is the three-wire connection, which looks like this: In a three-wire RTD

A very old electrical measurement technique known as the Kelvin or four-wire method is a practical solution to the problem

A Resistive Temperature Detector (RTD) is a special temperature-sensing element made of fine metal wire, the electrical resistance of which

Filled-bulb systems exploit the principle of fluid expansion to measure temperature. If a fluid is enclosed in a sealed system

Solids tend to expand when heated. The amount that a solid sample will expand with increased temperature depends on the

Disturbances in the liquid tend to complicate liquid level measurement. These disturbances may result from liquid introduced into a vessel

Certain types of nuclear radiation easily penetrates the walls of industrial vessels, but is attenuated by traveling through the bulk

Weight-based level instruments sense process level in a vessel by directly measuring the weight of the vessel. If the vessel’s

A variation on the theme of echo-based level instruments, where the level of some process material in a vessel is