Introduction
Ask most inspectors in Singapore what they look for in an acoustic camera, and you’ll hear a familiar list: microphone channel count, frequency bandwidth, detection range, AI-driven fault classification. Weight rarely makes the top five. But spend a full shift walking a substation with a handheld unit raised at arm’s length, and weight quickly becomes the spec you notice most.
Hertzinno’s handheld acoustic cameras, distributed and supported in Singapore by VISCOY, are built around a simple premise: the lightest instrument in its class isn’t a convenience feature, it’s a working advantage. Weighing less than 1.2kg, Hertzinno’s line of handheld acoustic cameras holds the title of the world’s lightest handheld acoustic camera on the market today.
Curious whether an acoustic camera fits your inspection programme in Singapore? Get in touch with us today and we’ll help you match the right model to your application: https://viscoy.com/contact-us
What an Acoustic Camera Actually Does
Before getting into why weight matters, it helps to understand what these instruments are doing under the hood. An acoustic camera pairs a dense array of MEMS (micro-electromechanical system) microphones with an optical lens. The microphone array captures ultrasonic and audible sound sources across a wide frequency band, then uses beamforming algorithms to localise exactly where a sound is coming from. That location data is overlaid as a colour-coded heat map on a live video image. Instead of just hearing a hiss or a crackle, the inspector sees precisely where it’s originating.
This is the technology behind three of the most common industrial inspection tasks carried out across Singapore’s power, utilities, and manufacturing sectors:
- Partial discharge (PD) detection: Corona, floating, and surface discharges in high-voltage switchgear and substations
- Gas and compressed air leak detection: Localising ultrasonic leak signatures in pressurised systems, with cost-of-leak estimation
- Mechanical fault detection: Identifying abnormal bearing noise, valve chatter, or other early-stage mechanical faults before they escalate
Why the Lightest Acoustic Camera on the Market Is a Big Deal
1. Inspections Are Rarely a Five-Minute Job
Substation walk-downs, pipeline corridor surveys, and plant-wide leak audits are common realities for inspection teams across Singapore’s industrial estates and utility networks, measured in hours. A handheld acoustic camera can be comfortable to hold for the first ten minutes but fatiguing by the second hour. This changes how thoroughly an inspector covers a site. At under 1.1kg, Hertzinno’s handheld acoustic cameras are light enough to carry raised, angled, and repositioned continuously through a full shift without the arm fatigue that heavier thermal or acoustic camera introduce.
2. Overhead and Awkward-Angle Work Is Unavoidable
Partial discharge sources in switchgear and overhead high-voltage equipment are frequently above eye level or tucked into cabinet corners. Detecting them often means holding the acoustic camera at an extended, elevated, or twisted angle, which is the position where every extra 100g is felt most. Having a lighter acoustic camera keeps that awkward-angle work stable and steady, which matters a lot for imaging accuracy, since a shaking or drooping hand degrades the acoustic beamforming result.
3. One-Handed Operation Frees Up the Other Hand
Field inspectors in Singapore rarely work with both hands free. A lighter acoustic camera is realistic to operate one-handed while the other hand manages a ladder, a harness line, a tablet, or PPE. Heavier acoustic cameras can push inspectors toward two-handed grips or tripod mounts, which slows down quick, walk-and-scan inspections that acoustic cameras are meant to enable in the first place.
4. Portability Multiplies Across a Route
Utility and industrial inspection routes often span dozens of assets across a single site, or multiple sites in a single day. This is a familiar challenge for contractors covering multiple sites across Singapore. Every gram in the hand-carried kit compounds across that route: lighter primary instruments mean lighter overall kits, easier transport between sites, and less cumulative fatigue the whole day.
5. Safety Compliance in Hazardous Environments
For ATEX-rated models built for explosive atmospheres, a lighter housing also supports safer, more controlled handling in zones where deliberate, careful movement matters. Combined with intrinsically safe electrical design, a lighter acoustic camera reduces the physical strain of maintaining that careful handling over an extended inspection in a Zone 1 or Zone 2 environment. This becomes a relevant consideration for many of Singapore’s oil & gas, petrochemical, and process industries.
The Technology Behind the Weight Reduction
Achieving class-leading weight without sacrificing sensitivity comes down to the microphone array and electronics design. Hertzinno’s handheld line uses MEMS digital microphone arrays (ranging from 128 to 144 channels depending on model) which are inherently smaller and lighter than the electret or analog condenser arrays used in older-generation acoustic imaging systems. Pairing that array with a compact, AI-driven processing engine on-device means the camera doesn’t need to carry the bulk of a separate external processing unit, keeping the full sensing-and-analysis package inside a single lightweight handheld body.
Specification | Detail |
Weight | As light as approx. 980g (HZ-HA-170P); approx. 1,100g (HA3) – marketed as the world’s lightest handheld acoustic camera |
Microphone array | 128–144 channel MEMS digital microphone array, depending on model |
Frequency bandwidth | 2 kHz to 150 kHz (audible through ultrasonic range) |
Detection range | Approx. 0.3m to 210m, depending on model |
Battery life | Up to 7 hours continuous operation (replaceable-battery models) |
Certification options | ATEX-certified variants available for Zone 1 & Zone 2 hazardous environments |
Core applications | Partial discharge detection, gas/compressed air leak detection, mechanical fault detection |
Optional configurations | Dual-modal acoustic + thermal imaging (up to 640×512 thermal resolution) on select models |
Note: Specifications vary by model across Hertzinno’s Acoustic Camera series. For more information, visit https://hertzinno.com/collections/handheld-acoustic-camera.
Where It Matters Most
The lightest acoustic camera advantage shows up in specific, recurring field scenarios relevant to inspection teams in Singapore:
- Substation PD surveys, where inspectors scan dozens of switchgear cabinets and bus bar junctions in a single circuit
- Compressed air and gas leak audits across large industrial plants, often covering long walking routes over multiple hours
- Elevated and overhead equipment inspection, where the acoustic camera is held above shoulder height for extended periods
- Confined or awkward-access areas where a bulky two-handed acoustic camera simply doesn’t fit the working posture
The Takeaway
A lighter acoustic camera like the new HA3 Handheld Acoustic Camera is the result of tighter, smarter engineering in the microphone array and on-device processing. For inspectors in Singapore, that translates directly into longer comfortable use, steadier imaging on awkward-angle work, easier one-handed operation, and less cumulative fatigue across a full inspection route. When the choice comes down to two acoustic cameras with comparable sensitivity, the lighter one is very often the one that gets used more consistently, catching faults before they become failures.
Bring an Acoustic Camera Into Your Inspection Programme in Singapore
Interested in seeing how Hertzinno’s handheld acoustic camera line fits into your inspection programme? Reach out to our VISCOY team to discuss which model (i.e. standard, ATEX, or dual-modal thermal) matches your application, whether that’s partial discharge detection, gas leak audits, or mechanical fault monitoring across your facilities in Singapore: http://viscoy.com/contact-us