Machine monitoring acoustic emission sensor CAPTA

for pipesfor process monitoringmonitoring

Product
CAPTA — acoustic sensor used to monitor noise emissions from industrial equipment and pipelines by detecting high-frequency acoustic waves generated by friction and impact of solids, granulates and dust on pipe walls. The sensor is maintenance-free and designed for quick outdoor installation without system shutdown.

Short description
CAPTA self-calibrates to the normal noise profile of the system and continuously monitors for significant changes in high-frequency noise emissions. Changes are detected and classified; spurious signals are automatically reset. Because detection is at high frequencies, the sensor is largely insensitive to background and low-frequency mechanical vibration noise, enabling focused monitoring of process- or material-related events. When a variation is detected the device provides an output signal and a warning.

Integration and outputs
The sensor provides a 0–10 V analogue output suitable for direct connection to a PLC. It can be integrated with an optional control unit that supplies an isolated 4 ÷ 20 mA output and two relay outputs. CAPTA is powered by DC 23–30 V (control unit power supply 90 ÷ 253 Vac). The standard operating temperature range is –40 to 85°C; a high-temperature version is available up to 125°C.

Table
Measurement: Noise emission monitoring
Detection: Acoustic
Technology: Not specified

Features / technical specifications

• Detection principle: high-frequency acoustic wave detection (friction and impact of solids, granulates and dust on pipeline walls)
• Self-calibration on normal system noise emissions
• Detects and classifies significant changes in noise emissions
• Insensitive to background and low-frequency mechanical vibration noise at high frequencies
• Automatic reset of spurious signals
• Quick outdoor installation, maintenance-free
• Continuous monitoring enabling prompt detection of potential problems
• Outputs: 0–10 V analogue output; compatible with PLCs
• Optional integration: control unit handling 4 ÷ 20 mA isolated output and 2 relay outputs
• Power supply: DC 23–30 V; control unit power supply 90 ÷ 253 Vac
• Operating temperature: standard –40 to 85°C; high-temperature version up to 125°C
• Application focus: monitoring noise emissions related to moving parts, rotations and material flow in pipelines