Rosemount Analytical Model 245 Conductivity Sensor
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  • Flow-through design
  • Stainless steel housing
  • Meets 3A standards
  • Max temperature: 250 °F (121 °C)
  • Max pressure: 100 psi
  • Conductivity Range: 100 μS/cm to 2 S/c
  • Pharmaceutical, Biotech, and Food & Beverage industries

The Rosemount Analytical Model 245 conductivity sensor is a flow-through toroidal (inductive) intended for pharmaceutical and food and beverage application where a sanitary design is required. No part of the sensor protrudes into the piping, so the sensor does not interfere with process flow.

The Model 245 is not an immersion sensor. The sample flows only through the toroid opening; it does not surround the toroids. Therefore, the circuit around the toroids is not complete. To complete the circuit, a stainless steel contact ring on either side of the toroids couples the ionic current in the sample to an electronic current that travels through the sensor housing surrounding the toroids.

The sensor is available in four line sizes between ½ inch and 2 inches with corresponding Tri-Clamp® fittings. Flanges and contact rings are 316 stainless steel, the liner is unfilled PEEK, and O-rings are EP. Plastics and elastomers meet the requirements of 21CFR177.

The maximum temperature is 121°C (250°F), and the maximum pressure is 100 psig (791 kPa abs).


Rosemount Analytical 23909-00 Extension Cable


Please consider these optional accessories.

Rosemount Analytical 99SQ-8965B Rebuild Kit 1in Version
Rosemount Analytical 99SQ-8965C Rebuild Kit 1 1/2in Version
Rosemount Analytical Stainless Steel Tag
Rosemount Analytical 99CC Calibration Certificate
One certificate per lot at standard factory ranges only, includes the model, serial and/or tag numbers (does not include actual test data)
Rosemount Analytical Electronic Calibration
Certificate for specific unit, includes model, serial and/or tag numbers, test standards, NIST report numbers, & the actual test data
Rosemount Analytical Certificate of Origin
Original certificate of origin with chamber of commerce stamp


This product can be used in the following applications: