CAPTA is an acoustic sensor used to monitor noise emissions from industrial equipment due to moving parts, rotations or generated by the flow of materials within pipelines.
The CAPTA sensor detects high-frequency acoustic waves generated by the friction and impact of solids, granulates, and dust on the walls of a pipeline, and calibrates itself on the noise emissions related to normal system operation.
Any significant change in noise emissions is detected and classified. At high frequencies, noise emissions generated by machines or the process are not altered by neighbouring equipment: the sensor is not disturbed by background noise or low-frequency noise from mechanical vibrations.
Spurious signals are automatically reset. Capta is easy to use: it can be installed outdoors in minutes without the need to lock the system. Maintenance-free, it reduces or eliminates visual and auditory inspections of installations, because the sensors, with their continuous action, ensure prompt detection of potential problems. A variation is detected instantly and the system modifies the output signal and warns the user that a different condition has occurred.
The sensor can be connected directly to a PLC or integrated with a control unit that handles a 4 ÷ 20mA isolated output and 2 relay outputs. The Capta sensor opens up new possibilities for monitoring and controlling equipment because it senses changes in operating conditions and allows action to be taken before damage occurs to the equipment and reduces the work and costs of control and maintenance.
Capta is supplied with direct current 23 to 30Vdc and provides a 0 to 10V output that can be connected to a PLC or control unit with power supply 90 ÷ 253Vac. The standard sensor operates in a temperature range of – 40 to 85°C or in a high temperature version up to 125°C.