The DF-KL digital flow meter electronics convert the frequency signal generated by the rotating vane into a numeric flow rate indication displayed on the top line of the LCD display, bar graph indicator proportional to the measuring value on the bottom, and a scalable analog output signal and two limit contacts to continuously monitor the flow values. Two relays with SPDT contacts are included and may be utilized for various control functions. Freely-adjustable switching points, hysteresis, window point, and switch-on/switch-off delay may be set as desired. A MIN/MAX memory determines the readings of the flowrate and if exceeded, are clearly indicated by red status LED's.