PCB 689B01 vibration transmitter unit - Sensor power supply and vibration signal processing transmitter unit for implementing machine monitoring based on PLC, DCS, and SCADA systems

• built-in sensor power supply (4 mA)
• connectable sensors: ICP sensors (with 100mV/g sensitivity)
• user-defined frequency range upon ordering
• 5 Hz ... 10 kHz or 10 Hz ... 1 kHz (ISO)
• output signal: 4 ... 20 mA vibration velocity RMS value and +/- 5 V AC vibration acceleration (buffered sensor signal)
• compact design (external dimensions 133 x 67 x 43 mm)
• power supply requirement: 20 ... 30 V DC

The PCB 689B01 device is primarily used for connecting ICP-type (with built-in charge amplifier) piezoelectric industrial acceleration sensors to process control, PLC, DCS, and SCADA systems. The unit enables existing systems to provide continuous vibration-based machine monitoring.

The device is designed in a single-channel version for receiving 100 mV/g sensitivity ICP-type (with built-in charge amplifier) piezoelectric vibration acceleration sensors. The device provides power supply to the sensors.

Based on the sensor signal, the PCB 689B01 generates a 4 ... 20 mA current signal proportional to the vibration velocity RMS value with the specified frequency range upon ordering. Additionally, it provides the sensor signal as +/- max. 5 V AC voltage signal on its two buffered outputs for measurement and diagnostic instruments.