United States

Detecting coolant flow

Detecting coolant flow


If coolant flow is detected with a pressure sensor, pressure may rise due to clogging, creating an uncertainty whether coolant is present or not. Low amounts of coolant cause scores and burns, which eventually lead to defective processing and result in large amounts of damage.


With FD-M Series flow sensors, the flow detection area contains no moving parts or obstacles. This completely uninterrupted design eliminates the possibility of debris clogging the mechanism, thus stabilizing coolant and strengthening the product quality of processed targets.


  • The FD-M┬áSeries Non-Wetted Electrode Electromagnetic Flow Sensor is the first factory automation flow sensor to adopt a free-flowing structure. Unlike floating-element and paddlewheel devices, the free-flowing structure of the FD-M┬áSeries has no moving parts or obstructions in the flow pipe, greatly reducing the risk of clogging. With no moving parts, the sensor is not subject to mechanical wear, which ensures a long service life. There is also virtually no pressure loss in the pipe, so the pump uses even less energy. Unlike conventional electromagnetic systems, this device detects liquid from outside the pipe, making it highly resistant to insulating deposits inside the pipe while minimizing maintenance. Two sensor types are available: one with a separate amplifier that allows flow rate monitoring using the LEDs on the sensor head and one with an integrated amplifier and a dual-row digital display for easy setup.