QH877 Micro Acoustic Imaging Camera

Making sound “visible”—discovering earlier, deciding faster.

Introduction

In industrial energy conservation and safety management, gas leaks and partial discharge are the two most common yet hardest-to-detect-early hazards. The GroupCore Acoustic QH877 Micro Acoustic Imaging Camera condenses cutting-edge acoustic imaging technology into the palm of your hand, making sound “visible” in real time and helping you locate faults and reduce energy consumption more efficiently and more safely.

Product Overview

The QH877 is the industry’s smallest and lightest acoustic imaging camera—weighing only 270 g, with a body comparable to a mobile phone that fits easily into a pocket or tool bag. It incorporates a 64-channel high-sensitivity microphone array covering a wide 2 kHz–65 kHz frequency band, and displays the precise location of leaks, partial discharge, and mechanical abnormal noise intuitively through real-time acoustic image contour mapping. Working with the mobile App or PC software, on-site data can be shared and turned into reports with a single tap, achieving a seamless transition from discovery to closed loop.

Core Highlights

Small enough for a pocket, powerful enough for the whole site

The unit measures 150×83×27.5 mm and weighs only 270 g, operable with one hand. Whether in confined spaces, elevated pipe galleries, or dense inspection routes, it responds flexibly—say goodbye to cumbersome burdens.

One sweep and you know—non-contact detection

With a 64-channel acoustic array and a measurement distance of 0.3–120 m, it rapidly localizes compressed air leaks, high-voltage electrical partial discharge, and HVAC system faults without touching the equipment. A real-time colored contour map is overlaid on the visible-light image, making anomalous points clear at a glance.

Ready out of the box—zero-threshold deployment

The operating logic is identical to that of a smartphone, with automatic frequency adaptation and no complex parameter settings. This substantially reduces training costs and supports rapid deployment of large-scale inspection teams.

Rugged and reliable—industrial-grade standard

IP54 dust and water protection, having passed a 1.5 m drop test, suited to an operating environment of −10 °C to +50 °C. Dust- and moisture-resistant, it operates reliably around the clock in both indoor and outdoor conditions.

Share anytime—a faster closed loop

A built-in Wi-Fi hotspot lets a mobile phone connect directly to the App to view, download, and share measurement images and videos. Discover a problem on site → share it instantly → generate a report: an efficient, closed-loop workflow.

Technical Specifications

Notes: (1) The “dynamic range: maximum 12 dB” figure is to be qualified—whether it denotes the device’s dynamic range or the selectable range of the acoustic image color mapping (see the appendix, Section 3, item 1). (2) The 28–132 dB sound pressure level range and the 0.3–120 m measurement distance are quoted without test conditions, and the two are frequency-dependent (see the appendix, Section 3, items 2–3). (3) The array’s sensitivity, signal-to-noise ratio, and angular resolution are not specified in the source document (see the appendix, Section 3, item 4). (4) The battery endurance of 4 hours is quoted without charging time or the operating mode under test.

Typical Application Scenarios

• Compressed air / process gas leak detection: rapid localization of small leak points at pipe flanges, connectors, and valves, saving energy and reducing consumption.

• Power partial discharge detection: identification of corona, surface, and floating discharge; applicable to distribution network lines, switchgear cabinets, insulators, and cable terminations.

• HVAC system maintenance: detection of leaks in air conditioning ducts and refrigeration systems, and of fan abnormal noise.

• Automotive repair and mechanical diagnosis: troubleshooting of anomalous sources in engines and pneumatic systems.

Software Functions

• Real-time localization and visualization of sound sources based on the acoustic image;

• Gas leak detection and localization;

• Partial discharge detection and localization (supports PRPD pattern display);

• Photographic and video recording of measurement data;

• Generation of inspection reports via the mobile App or PC software.