What is a Four-wire RTD ?
A very old electrical measurement technique known as the Kelvin or four-wire method is a practical solution to the problem
A very old electrical measurement technique known as the Kelvin or four-wire method is a practical solution to the problem
2 Wire RTD : where Rpt is Resistance of RTD R2 is Resistance of first lead wire (Extension cable used
4 Wire RTD Principle The most accurate lead wire configuration is the “true” 4-wire configuration. In a true 4- wire