• 0 to 14 pH measuring range
  • Chemically resistant KYNAR
  • Rugged, quick change, quick clean
  • Max temp: 266°F/130°C at 40 psig/276 KPa
  • Max pressure: : 150 psig/1035 KPa at 158°F/70°C
  • Model RB-546:
    • 3/4" MPT threaded nose
    • Submerged; 3/4" MNPT threaded top
  • Model RB-547:
    • 1" MPT process fitting or, 1¼" and 1½" ball valve assemblies
    • 1" MNPT process fitting, into 1" FNPT coupling or ¾" submersion extension pipe


The Rosemount Analytical Model RB pH Sensor is designed for extended sensor life when used in applications with sulfides which are typically found in scrubbers. The Model RB is made with chemically resistant KYNAR. Optional installation methods allows standardization of entire plant with a minimum of sensor part numbers.

The Model RB pH Sensor is built with a Kynar body and is designed in two configurations. The 546 sensor is housed in a fully encapsulated body for use in pipe tees or submersed in a tank. The 547 is the ball valve retractable version; the sensor body can be replaced and the titanium sensor sheath assembly (sold separately) can be reused. Both sensor types are built with a high performance J glass, notched tip with a Teflon junction, and a PT100 RTD. The integral cable is prepared with tinned leads for easy wiring.


This product can be used in the following applications: