The KOBOLD series TSR employs a resistive thermal device (RTD) to measure process temperature. Utilizing the relationship between resistance and temperature change in metals, RTDs provide a very stable and repeatable output. This makes them well suited for industrial applications which require a high degree of measuring accuracy over a wide range of temperatures. The probes employ a Pt-100 RTD element which is hermetically sealed in a 316 stainless steel probe. The TSR is available in an RTD only version or RTD with head-mounted 2-wire 4-20 mA transmitter. NPT or Tri-Clamp® connections are standard.