Rosemount Analytical 23551-00 Sensor Base 381 PT100

The Rosemount Analytical 23551-00 Sensor Body is a complete Pt-100 temperature-sensing base designed to accompany Rosemount’s Model 381 pH/ORP sensors. It houses a Pt-100 RTD element that provides temperature compensation for pH and ORP measurements, helping maintain accuracy as process temperatures vary in pipelines, open tanks, or ponds. This part is cataloged as “Sensor Body, complete, Pt-100” (PN 23551-00) and serves as a replacement sensor base when servicing Rosemount Analytical sensor assemblies. The 381 family is built to measure either pH or ORP, with Pt-100 temperature compensation integrated into the sensor design, and these sensors are commonly paired with Rosemount transmitters and preamp configurations such as Models 54, 54e, 1055, 81, 3081, 4081, 5081-P, or Xmt preamplifier, depending on the system setup.