A flow-through type detector used to measure pH/ORP in a closed loop, such as a pipe or a closed tank. This detector incorporates an electrode into the electrode holder.
There are a (chamber) type that connects to bypass line with a flange, and an insertion type that connects with a "screw" or flange on the piping or the side of the tank. There are many fabrication specifications for wetted materials and connection standards, and there are many types of combination electrodes so that they can be used under various measurement conditions.
Please refer to the respective spec sheets for immersion type detectors and chip replacement type electrodes.