The DJI Zenmuse H20T is the standard payload on UAV Imaging's Matrice 300 RTK. A single quad-sensor gimbal carries the four optical systems that cover the bulk of industrial drone work — zoom, wide, radiometric thermal, and a laser rangefinder — so one flight delivers most of the inspection scope without payload swaps.
Specifications
| Sensor | Specification |
|---|---|
| Zoom camera | 20 MP CMOS, 23-1200mm equivalent (23x optical, 200x hybrid), shutter 1/8000-8 s |
| Wide camera | 12 MP, 24mm equivalent, 4K 30 fps video |
| Thermal imager | 640 x 512 uncooled VOx microbolometer, radiometric, ±2°C absolute / ±1°C relative, 30 Hz frame rate, 13.5mm equivalent focal length |
| Laser rangefinder | 3-1200 m range, ±0.2 m accuracy |
| Gimbal | 3-axis stabilised, ±0.01° control accuracy, pitch -120° to +30° |
| Weight | 828 g |
| Compatibility | DJI Matrice 300 RTK + Matrice 350 RTK dual-payload bays |
| Operating temperature | -20°C to +50°C |
| IP rating | IP44 (when mounted on Matrice 300 RTK) |
How UAV Imaging uses it
- Standoff inspection — 1200mm zoom inspects fragile structures, energized equipment and hazard zones from safe distance
- Flare stack and vent stack inspection — zoom + thermal combination identifies refractory damage, hot-spot leaks and corrosion from outside the heat envelope
- Solar PV thermal scan — radiometric thermal sensor is the workhorse for the every-module scan
- Transmission line patrol — zoom resolves insulator damage, conductor wear and connector hotspots at line distance
- Search and emergency response — wide for situational awareness, thermal for body-heat detection, zoom for confirmation
- Methane vent confirmation — thermal can confirm visible plumes after a Pergam Falcon survey identifies a hotspot
- Bridge and structural standoff inspection — zoom plus laser rangefinder dimensions structural defects without contact
Why the quad-sensor design matters
Pre-H20T inspection required either two flights (one for visible, one for thermal) or a payload swap mid-flight (cost time, cost battery, risk error). The H20T captures the full multi-sensor scope on a single sortie. For a 30-flare inspection program that previously needed two days of flying, the H20T compresses the same scope into a single day on site.
Practical accuracy notes
- Radiometric absolute accuracy ±2°C is in line with typical aerial inspection requirements. Higher-rigour applications (warranty work on premium solar arrays, regulatory thermal inspection) sometimes ask for relative accuracy framing instead, which the H20T meets at ±1°C.
- Laser rangefinder is calibrated against a reference target before high-rigour structural deliverables. Most cases the ±0.2 m specification is adequate without recalibration.
- Zoom resolution at 1200mm equivalent loses detail beyond 200-300 m on small targets — useful as a context lens, not as a substitute for closer inspection on truly small features.
How it pairs with other payloads
The H20T is the everyday payload. For RTK-precision mapping deliverables, UAV Imaging swaps in the dedicated mapping payload set. For methane survey, the Pergam Falcon laser sensor replaces the H20T. For confined-space and indoor work, the entire airframe changes to the Flyability Elios 2. The H20T owns the standard outdoor inspection envelope.