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Rosemount™ 68 RTD Temperature Sensor (Obsolete)
rosemount 68 temperature sensor
This product is now obsolete.
Relevant documents and drawings are listed below.
Contact your local Emerson representative for your measurement needs.
Rosemount™ 68 RTD Temperature Sensor (Obsolete)


Lead Wires
PTFE insulated, silver plated, 24-gauge stranded copper wire
Time Constant / Response
12 seconds maximum required to reach 63.2% sensor response in water flowing at 3 ft/s (0.91 m/s)
±0.11% 0.28 °C or 0.51 °F maximum ice-point resistance shift following 1,000 hours at maximum specified temperature (400 °C)
Insulation Resistance
1000 x 10^6 ohms minimum insulation resistance when measured at 500 Vdc at room temperature
Calibration Options
Calibration schedule or customer-specified calibration range, both with Callendar-Van Dusen constants


  • Industry-standard, single element, Class B, Pt-100 RTD delivers exceptional accuracy and durability
  • Thin film sensor provides an ideal solution for industrial applications with high vibration
  • Covers temperatures from –58 to 752°F (–50 to 400°C) to serve a wide variety of applications
  • Adaptable design with a variety of enclosure and connection head options meet varying application requirements
  • Available in capsule, general purpose and spring-loaded designs for adaptability
  • Callendar-Van Dusen constants allow user to match the sensor to the transmitter for notable performance improvement
  • Option for thermowell assembly provides protection from corrosive environments
  • Global hazardous location approvals meet local requirements