Flow and Temperature Monitoring in Cooling Circuits of Power Generators with Fluid Sensors
In high-power, water-cooled generators, closed cooling circuits ensure that the units do not overheat. When cooling stators and rotors, the temperature and flow velocity must therefore be monitored. For this purpose, fluid sensors are installed in the lines independently of the flow direction, which simultaneously record the temperature and flow velocity. If the required temperature is exceeded or the flow velocity is not reached, the pump changes the water volume or switches off the generator.

Cooling Flow Monitoring of Welding Tongs with Flow Sensors
In order to protect welding tongs in spot welders from overheating and thus from excessive wear, cooling water is channeled through the welding caps during operation. For this purpose, the main line is divided into smaller cooling circuits via a distributor block, which enables more precise control. The cooling flow rate of 100 to 150 cm/s is precisely monitored in each line via a flow sensor and control valve. In addition, the sensors also measure the temperature so that any overheating can be detected immediately on the display and rectified immediately.

Detection of Leaks on Machine Tools with Flow Sensor
In machine tools such as a lathe or milling gantry, coolant and lubricants are fed into the processing chamber. This area is sealed by mechanical seals, but leaks occur due to regular wear. If the leak flow is too high, it pushes the fluid back into the spindle bearings and damages them. To prevent this from happening, flow sensors are integrated into the leakage line to measure the flow velocity. If the measured value is above a defined limit, the sensor issues an alarm signal to replace the seal.

Cooling Water Monitoring on Packaging Machines with Flow Sensor
When manufacturing blister packs, heating elements must be protected against overheating using cooling water. Both flow velocity and temperature must be closely monitored. For this purpose, a flow sensor is installed in the line system to check both values with two digital switching outputs. These are evaluated by a PLC. If the values exceed or fall below the limits, the water volume is adjusted accordingly or the system is switched off. The display serves as an additional temperature indicator directly on the machine.