Honeywell defines state-of-the-art pH measurement with the Durafet® pH electrode, a non-glass, unbreakable, Ion Sensitive Field Effect Transistor (ISFET)-based pH sensor. This industry-proven pH electrode, with over 14 years of application experience, provides fast, accurate and dependable pH measurement in the most demanding applications. The Durafet electrodes include a connector, enabling easy and reliable electrode replacement without twisting of cables.

The TL1000 Series, Twist Lock Mounting, provides an easy way to install/remove Durafet III pH electrodes from pipelines and tees. A quick ¼ turn is all that is required for installation/removal. This quick ¼ turn does not twist cables as you attempt to install or remove an electrode from the process during calibration, maintenance and replacement. The threaded mounting bushing is available in two sizes (3/4” or 1” male NPT) and two materials of construction (316 SS and Kynar) for use in a wide variety of applications and instrumentation, including the UDA2182, APT Series and DirectLine® Sensor Modules.

The Durafet III electrode has a time-saving connector that eliminates having to pull cable when replacing an electrode. The TL1000 provides additional time savings by eliminating the need for wrenches and time to thread and unthread the electrode. The TL1000 consists of a mounting bushing that is threaded into the process and a Durafet III pH Twist Lock adapter that locks into the mounting bushing. The mounting bushing has slots that align with pins on the Durafet III pH adapter. A simple 1/4 turn of the Durafet III pH adapter positions the pins into the locked location in the mounting bushing. The locking pins are visible through an opening 90 degrees from the mounting slots to ensure correct installation.

During calibration of a Durafet II electrode keep the cable connected when removing the electrode so power is maintained to the Durafet sensor. If power is interrupted you have to wait up to 15 minutes for the Durafet sensor to get a stable pH reading. The TL1000 mounting eliminates cables from twisting when trying to install or remove an electrode for calibration or maintenance. For most threaded mountings you have to thread or unthread the electrode when installing or removing it. While turning the electrode in these conventional threaded mountings the electrode’s cable becomes a twisted mess and breakage of conductors inside the cable is possible. The Twist Lock mounting only requires a quick 1/4 turn and this does not twist up the cable.