Rosemount Analytical Model 222 Conductivity Sensor
Starting at $3,979.00

Not in stock. Usually ships in 2-4 weeks [?]

Need Help? Call a Flow Engineer 1-800-884-4967

We're open 8:00am to 5:30pm ET


  • Teflon lined carbon steel pipe
  • Both an inductive and contacting sensors
  • Max temp: 360°F (182°C)
  • Max pressure:
    • 150# Flanges; 125 psig
    • 300# Flanges; 250 psig
  • Minimum conductivity: 500 uS/cm
  • Maximum conductivity: 2 S/cm

The Rosemount Analytical Model 222 flow-through toroidal sensor is ideal for use in viscous or fibrous liquids. No part of the sensor protrudes into the sample flow, so there is no obstruction on which solids can accumulate.

The sensor consists of a Teflon-lined® carbon steel pipe, which carries the sample, inserted through the opening of the toroid pair. Because the toroids are not immersed in the sample, the circuit around them is not complete. To complete the circuit, carbon steel contact rings on either side of the toroids couple the ionic current induced in the sample to an electronic current that travels through a wire around the outside of the toroids.

The sensor is available with either 150 or 300 lb flanges. The temperature limit is 360°F (182°C).


Rosemount Analytical 23294-00 Extension Cable
Unshielded interconnecting cable for 1054A, 1054B & 2054C
Rosemount Analytical 23294-05 Extension Cable
Shielded interconnecting cable with additional wire
Rosemount Analytical Stainless Steel Tag


Please consider these optional accessories.

Rosemount Analytical 23550-00 Junction Box Remote
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: