The 4B Watchdog Elite (photo) uses non-contacting, magnetic sensors to monitor belt speed and belt alignment at the head, boot or both. Additional sensors monitor bearing temperature, head pulley alignment and plugged spout conditions. The system incorporates dual microprocessor control, using the latest PIC microprocessors and non-volatile (EEPROM) memory chips. An LCD screen displays elevator status messages, and a super-bright LED screen displays belt speed. Voltage-free isolated relay contacts are provided for alarm, stop, under speed, misalignment and temperature. RS485 communication is also available for connection to plant computers and PLCs. — Hall 6, Booth 162 — 4B Deutschland, Ennepetal, Germany
This Monitor Keeps a Close Watch over Bucket Elevators
| By Chemical Engineering