Acoustic Imager for Leak Detection and Partial Discharge Analysis

UNI-T UT568B Professional Acoustic Imager: Revolutionizing Industrial Leak Detection and Partial Discharge Analysis

The UNI-T UT568B Professional Acoustic Imager represents a significant leap forward in industrial inspection technology, seamlessly integrating advanced acoustic imaging capabilities with an intuitive user experience. This groundbreaking device empowers professionals to detect, locate, and visualize invisible acoustic phenomena with unparalleled precision, transforming maintenance and safety protocols across various industries.

Unveiling the Invisible: The Power of Acoustic Imaging

Designed to tackle the most challenging industrial environments, the UT568B visualizes gas leaks and partial electrical discharges in real-time on its high-definition display. This innovative approach allows maintenance teams to pinpoint issues that are imperceptible to the human eye or traditional methods, preventing costly downtime, energy waste, and potential catastrophic failures.

Key Features & Advantages:

• Precision Sound Source Localization: Equipped with an advanced array of 138 high-sensitivity digital MEMS microphones, the UT568B delivers exceptional detail in acoustic imaging. This sophisticated configuration ensures accurate detection and mapping of sound sources, even in complex, noisy industrial settings.
• Extensive Detection Range: From close-up inspections at 0.3 meters to long-range detection up to 150 meters, the UT568B provides comprehensive coverage for various industrial assets, enabling safe and efficient inspection of critical infrastructure from a distance.
• Adjustable Bandwidth (2kHz to 100kHz): This crucial feature allows users to filter out ambient noise and isolate specific frequencies associated with leaks or electrical discharges. This targeted approach significantly enhances detection accuracy and reduces false positives, making it easier to identify problem areas.
• Intelligent Partial Discharge (PD) Detection: The imager intelligently identifies and classifies different types of partial discharges – corona, floating, and surface discharges – in high-voltage systems. This critical diagnostic capability helps prioritize repairs and predict potential equipment failures.
• Multiple Visualization Modes: Adapt your inspection view with single source, multiple source, and hologram modes. These versatile options provide complete acoustic imaging flexibility, allowing detailed analysis of specific sound events or broad area scans.
• Real-Time Data Recording: Capture critical information with snapshot and video capabilities, complete with integrated text and voice annotations. This ensures thorough documentation for reporting, trend analysis, and historical records.
• Focus Mode for Enhanced Clarity: Concentrate the acoustic imaging in small, specific areas to reduce interference from other noise sources, ensuring clearer identification of localized issues.
• Dynamic Range Adjustment: Optimize sensitivity to reveal even the most minute leaks, providing comprehensive detection capabilities regardless of leak size.
• Advanced Analysis Software: Beyond detection, the UT568B supports in-depth diagnostics with time-domain waveform, frequency spectrogram, and PRPD (Phase-Resolved Partial Discharge) pattern analysis, enabling root cause identification and predictive maintenance strategies.
• Integrated LED Lighting: Ensures clear visibility and effective operation in dimly lit or dark industrial environments.
• Extended Battery Life: Two detachable & rechargeable Li-ion battery packs provide continuous operation, minimizing downtime during critical inspections.
• Rugged, Ergonomic Design: Built for the demands of industrial use, its robust construction and ergonomic design ensure comfortable and reliable performance in challenging conditions.

Unmatched Performance Through Advanced Engineering

The Acoustic Core: At the heart of the UT568B lies its meticulously engineered array of 138 high-sensitivity digital MEMS microphones. This sophisticated arrangement ensures a high signal-to-noise ratio (SNR) of 64dB@1kHz and a broad sensitivity range (from <20dB to >120dB), allowing for the capture of subtle acoustic signals even amidst loud industrial machinery. The wide frequency response from 2kHz to 100kHz means that the imager can pick up a vast spectrum of sounds indicative of various anomalies, from high-frequency gas leaks to the distinct signatures of electrical discharges.

Dynamic Visual Intelligence: The 4.3" touch display screen translates complex sound data into intuitive, actionable visuals. Users can select from several display modes to suit their specific inspection needs:

• Full-View Display: Provides a wide field of vision (60°H x 40°V), ideal for rapid scanning of large areas for partial discharge or gas leaks.
• Focusing Display: Narrows the acoustic imaging cloud map to a concentrated area, minimizing external noise interference for precise fault localization.
• Single/Multiple Sound Source: Intelligently highlights the loudest single source or identifies multiple concurrent sound sources, helping to prioritize investigations.
• Hologram Mode: Offers a comprehensive visualization of all sound sources exceeding a user-defined threshold, providing a complete acoustic landscape.

These flexible visualization options, coupled with dynamic range adjustment, allow for customized displays tailored to the specific inspection task, from preliminary surveys to detailed fault analysis.

Intelligent Diagnostics: Partial Discharge & Gas Leak Detection

Intelligent Partial Discharge Detection: Electrical infrastructure demands constant vigilance against partial discharges, which are often precursors to insulation breakdown and severe equipment failure. The UT568B excels at identifying and classifying these discharges:

• Corona Discharge: Detects the ionization of air around high-voltage conductors.
• Floating Discharge: Pinpoints discharges occurring within voids or gaps in insulation materials.
• Surface Discharge: Identifies tracking and degradation along insulation surfaces. By accurately categorizing the type and severity of discharge events, maintenance teams can transition from reactive repairs to proactive, condition-based maintenance, optimizing resource allocation and extending asset lifespan.

Precision Gas Leak Detection: Undetected gas leaks, particularly in compressed air systems, can lead to substantial energy losses and operational inefficiencies. The UT568B offers unparalleled sensitivity, capable of detecting leak rates as low as >0.15m/s (at 0.5MPa, 0.5m) and >0.2m/s (at 0.5MPa, 1m). This high sensitivity translates directly into significant cost savings by rapidly identifying and quantifying leaks in compressed air, industrial gas, and refrigeration systems. Beyond mere detection, the integrated calculation features estimate leak rates and their annual cost implications, providing clear financial justifications for repair and maintenance initiatives.

Comprehensive Data Analysis for Informed Decisions

The UT568B supports modern, data-driven maintenance strategies with its robust analytical capabilities:

• Time-Domain Waveform Analysis: Examine the temporal characteristics of acoustic signals to understand their evolution and transient behaviors.
• Frequency Spectrogram: Visualize the frequency components of detected sounds over time, offering insights into the nature of the source.
• PRPD Pattern Analysis: Analyze phase-resolved partial discharge patterns, which are crucial for diagnosing the type and severity of electrical insulation defects.

These advanced tools elevate the UT568B beyond a simple detection device, transforming it into a powerful diagnostic system that enables professionals to not only find problems but also understand their root causes, facilitating more effective repair strategies.

Professional Applications Across Industries

Power Transmission & Distribution:

• High-Voltage Equipment Inspection: Safely inspect substations, overhead lines, transformers, and switchgear for partial discharges from a distance (up to 150m).
• Proactive Maintenance: Identify insulation weaknesses before they lead to catastrophic failures, reducing outages and improving grid reliability.
• Compliance & Reporting: Document discharge patterns for trend analysis, predictive maintenance, and regulatory compliance.

Industrial Compressed Air Systems:

• Energy Efficiency Optimization: Conduct rapid leak surveys without halting production, quantifying losses, and prioritizing repairs.
• Cost Reduction: Dramatically reduce energy waste associated with undetected compressed air leaks, contributing to significant operational savings.
• Maintenance Planning: Accurately map leak locations for efficient repair scheduling and verification of repair effectiveness.

Petroleum, Chemical & Process Industries:

• Hazardous Environment Safety: Perform non-contact leak detection in hazardous areas, identifying leaks in valves, flanges, and pipes from a safe distance.
• Environmental Protection: Detect and quantify emission rates of gases for regulatory compliance and environmental stewardship.
• Operational Integrity: Prevent process disruptions and ensure system integrity by promptly addressing leaks in complex chemical processing equipment.

Building Systems & Energy Efficiency:

• HVAC & Refrigeration: Locate refrigerant leaks, improving system efficiency and reducing environmental impact.
• Pneumatic & Steam Systems: Identify compressed air leaks in pneumatic controls and steam leaks in heating systems, enhancing energy efficiency.
• Vacuum Systems: Detect vacuum leaks in process equipment, ensuring optimal operational conditions and product quality.

Technical Specifications

Display & Camera:

• Display: 4.3" High-definition touch screen
• Field of View (FOV): 60° (Horizontal) x 40° (Vertical)
• Digital Camera Resolution: 13 Megapixels
• Working Temperature: -20°C to 50°C

Acoustic Imaging System:

• Microphone Channels: 138
• Microphone Type: High-sensitivity digital MEMS microphones
• Array Plane Size: Approx. 150mm
• Microphone Sensitivity: -26dBFS @ 1kHz
• Sound Pressure Sensitivity: Lower limit: <20dB / Upper limit: >120dB
• Signal-to-Noise Ratio (SNR): 64dB @ 1kHz
• Bandwidth: 2kHz to 100kHz (Adjustable)
• Sound Sampling Rate: 200kHz
• Minimum Leak Rate: >0.15m/s (at 0.5MPa, 0.5m), >0.2m/s (at 0.5MPa, 1m)
• Detection Distance: 0.3m to 150m
• Acoustic Imaging Frame Rate: 25 FPS

Functions:

• Discharge Detection Types: Corona, Floating, Surface
• Display Modes: Single, Multi, Hologram, Full-View, Focusing
• Threshold Adjustment: Advanced filtering for background noise reduction
• Laser Range Finder (LRF): Up to 30m
• Auto Enhancement: Yes, for optimal image clarity
• Photo Capturing/Video Recording: Yes, with integrated audio
• Wireless Connection: Wi-Fi & Bluetooth for data transfer and remote control
• Annotation: Text & Voice annotation capabilities

General Characteristics:

• USB Interface: Type-C for fast data transmission and charging
• Communication Interface: Supports data transmission and report generation
• Storage Capacity: 128GB SD card (included)
• Image Format: JPG
• Video Format: MP4
• Audio Format: WAV
• Languages: Chinese, English (User selectable)
• Weight: 1.35kg (including battery)
• Dimensions: 163mm × 286mm × 140mm

Package Contents

• UNI-T UT568B Acoustic Imager (1)
• UT-M23 Li-ion Battery Pack (2)
• Power Adapter (1)
• Type-C USB Cable (1)
• Earpiece (1)
• SD Card Reader (1)
• SD Card (128GB) (1)
• Quick Start Guide (1)
• Robust Carrying Case (1)

Optional Accessories

UT-M23 Charging Base:

• Model No.: UT-M23
• Compatibility: Designed specifically for UNI-T UT568B UT-M23 Li-ion Battery Packs.
• Function: Provides a dedicated and convenient charging station for spare batteries, ensuring they are always ready for deployment.
• Features: Includes LED charging status indicators for clear visibility of battery charge levels and a secure docking mechanism.
• Benefits: Maximizes operational uptime by allowing continuous use of the imager with freshly charged spare batteries, crucial for extensive inspection tasks.