Flowcell device, flowcell control system and method

A flow-cell device for sensing electrochemical process parameters, comprising:

• a cell housing comprising a pipe adapted to receive liquid;
• a sensor housing configured for receiving an electrochemical sensor for sensing an ion concentration of liquid in the pipe, the sensor being disposed at a side of the cell housing and protruding into the cell housing;
• and
• a motor arrangement disposed on the cell housing and configured for stirring liquid present within the cell housing in the pipe when the flow-cell device is in operation wherein the motor arrangement comprises:
• a motor housing;
• a first portion disposed inside the motor housing such that the first portion does not contact the liquid,
• a second portion disposed outside the motor housing and protruding into the cell housing, and
• a motor configured to drive the first portion of the motor arrangement;
• wherein the first portion is configured to drive the second portion of the motor arrangement;
• wherein the second portion is configured to stir the liquid in the pipe;
• an inlet and an outlet, wherein the pipe is configured to receive the liquid from the inlet of the flow-cell device and to direct the liquid to the outlet of the flow-cell device;
• the electrochemical sensor including a membrane disposed on a side of the electrochemical sensor facing the motor arrangement;
• wherein the electrochemical sensor is configured to sense the ion concentration of a chemical substance solved in the liquid inside the pipe within the cell housing by the membrane to consume a part of the chemical substance, and the second portion of the motor arrangement is configured to stir the liquid in the pipe comprising the chemical substance;
• wherein the sensor protrudes sufficiently from the sensor housing into the pipe toward the motor arrangement to leave only a gap between a magnetically effective stirrer bar and the membrane.