Automatic electric ltd. Is engaged in manufacturing electrical instruments, power systems and instrument transformers in india. The company has been accredited with an iso 9001 certification. Digital panel meters operate on the principle of dual slope integration. It is available in two types i.E. 3½ digits & 4½ digits. Digital frequency meter incorporates microcontroller with crystal oscillator to display the frequency. It is available in 4 digit type. The following are its unique features:
1. seven segment red & green colour led display with 0.5" & 1" size.
2. ac current input is incorporated with built-in ct of 1amp or 5amp for isolation.
3. high accuracy.
4. ac/dc signal measurement
