Yokogawa YTA610 temperature transmitter

communication

The YTA610 has a 4-20 mA analog output signal and uses either the HART 7 digital protocol or the all-digital FOUNDATION™ Fieldbus protocol.

 

YTA Series Communications

 

Dual sensor input

The YTA610 has dual sensor input function. Using the processing power of the transmitter, dual inputs can be used to provide fault sensor backup, average temperature or temperature difference measurement.

 

Sensor matching

Yokogawa YTA610 uses the IEC60751 standard to define the relationship between resistance and temperature of RTD sensors. This relationship is called the standard curve. Sensor manufacturers use the same standard, but because of the construction process, each sensor has a unique temperature/resistance relationship. This is called the true RTD curve. (The actual RTD curve is within the tolerance range of the IEC60751 standard) In the 1920s, Hugh Longbourne Callendar and M.S. Van Dusen developed a set of coefficients that could modify the standard curve to match the actual RTD curve. Thus, the error caused by the difference between the two curves is eliminated. Yokogawa's YTA610 comes with a CM1 option that accepts these coefficients to adjust the standard curve to match the actual RTD curve of the sensor. Eliminating this error improves the accuracy of the YTA610 sensor system.