The SFT-C intelligent flow and speed measuring instrument uses the induction method to measure the slip and speed of asynchronous motors and electric pumps, while simultaneously measuring the grid frequency.

According to the requirements of pumps such as submersible pumps, it is necessary to measure both the flow rate and speed of the pump. The SFT-C intelligent flow meter can be paired with flow sensors such as turbines that have frequency output, allowing simultaneous measurement of flow frequency. The instrument is equipped with flow coefficient, rated speed, and pole pair settings. It features two display windows (speed display window and flow display window).

The instrument consists of a single-chip microcomputer, sensors, and analog signal processing components. It displays measurement results with floating-point digital tubes and includes a serial communication interface for easy connection with computers.

The signals directly measured by the instrument include grid frequency, rotor current frequency, and flow frequency. It employs a combination of frequency measurement and period measurement methods, offering high measurement accuracy, stable and reliable operation, user-friendly operation, strong anti-interference capability, and a wide power supply adaptation range. Therefore, it is suitable for all motors that use the induction coil method for speed measurement, particularly offering outstanding advantages for applications such as submersible electric pumps and submersible motors where only the induction coil method can be used.

This instrument can be used by motor and pump manufacturers, user units, and testing stations for measuring slip, speed, flow rate, grid frequency, etc. It can also be used as a frequency meter, providing multi-functional capabilities in a single device.