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The Rosemount 68Q Sanitary Temperature Sensor is an industry-standard, resistance temperature detector (RTD). This sensor is engineered to provide flexible and reliable temperature measurements in hygienic process environments for the food and beverage, pharmaceutical and life-science industries. This RTD is designed with a Tri Clamp® sanitary endcap configuration for easy installation and its aseptic process connection is suitable for clean-in-place (CIP), dead-pocket free, measurement applications

• ime Constant / Response

• Tri Clamp O.D. tube size 1-in. and greater: Less than 3.5 seconds required to reach 63.2% sensor response; Tri Clamp O.D. tube size 1/2- to 3/4-in.: Less than 1.5 seconds required to reach 63.2% sensor response; see full specs for complete specifications
  

• Stability

• Tri Clamp O.D. tube size 1/2- to 3/4-in.: ±0.08% maximum ice-point resistance shift following 1,000 hours at maximum specified temperature 392 °F (200 °C)

• Lead Wires

• Tri Clamp O.D. tube size 1-in. and greater: ±0.04% maximum ice-point resistance shift following 1,000 hours at maximum specified temperature 392 °F (200 °C)

• Insulation Resistance

• 500 x 10^6 ohms minimum insulation resistance when measured at 100 Vdc at room temperature
  
  

• Calibration Options

• Customer-specified calibration point or schedule; calibration schedule with Callendar-Van Dusen constants
  
  

Features

• Designed for hygienic process environments to meet food and beverage, pharmaceutical and life-science industry demands

• Tri Clamp endcap provides immersion lengths from 1.0 to 9.5 inches (25.4 to 241.3 mm) for easy installation

• Withstands -58 to 392 °F (–50 to 200 °C) temperature range for application durability

• Aseptic process connections are suitable for clean-in-place, (CIP) dead-pocket free, measurement applications

• Surface finishes on sensors and SST connection heads meet 3-A® Standards to ensure reliable performance

• Variety of enclosure and connection head options offer application flexibility

• Sensor capsule is welded into the 316 SST sanitary endcap/stem assembly for performance stability

• Calibration schedules with Callendar-Van Dusen constants improve overall sensor performance and accuracy

• Provides option for electropolishing wetted parts to meet specific surface finish requirements

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