In some inline applications, removal of the sensor for routine cleaning or calibration becomes difficult due to conduit or wiring. The 551 quick change sensor offers a unique method of removing the sensor through through a "nut lock" adapter system. Nut Lock adapter threads directly into 1-inch NPT process connections. Bolt length options Sensor sizes up to 12 inches allow the sensor to fit through flanges and standoff pipes. The 551 sensor also includes a 3/4-inch rear connection for use in submersible applications.

 

Reference Axial Ion Path®

• Patented design increases sensor life, accuracy and reliability
• High poison resistance: reduced calibration offset error
• Large surface reference junction eliminates clogging problems
• Eliminates error due to fluctuating pressure
• No exotic gel or polymer electrolytes that can be incompatible with the process