ENTERPRISE FIELD GUIDE · CANADA
Matrice 4T Thermal Data Workflow
A colourful thermal screenshot is a clue. A matched, radiometric, traceable record is evidence your reviewer can interrogate.
THE SHORT ANSWER
Do not deliver a hotspot screenshot. Deliver a traceable thermal record.
A defensible Matrice 4T workflow preserves the 16-bit R-JPEG, a matched visible image, target identity, capture position, gain mode, emissivity assumption, environmental context and the analyst’s exception decision. The thermal image shows apparent surface temperature—not an automatic diagnosis. Capture controls and records are what let a qualified reviewer reproduce the interpretation.
01
KNOW THE SENSOR RECORD
What the Matrice 4T thermal camera gives you
OFFICIAL CAMERA DATA
Radiometric capture with defined limits
- 640 × 512 thermal sensor at 30 Hz.
- 16-bit R-JPEG and 8-bit JPEG photo formats.
- High gain: −20°C to 150°C measurement range.
- Low gain: 0°C to 550°C measurement range.
- Spot and area measurement functions.
These are official specifications, not a guarantee that every field reading equals true target temperature. Emissivity, reflections, atmospheric conditions, focus, range, angle and target size remain part of the measurement problem.
02
FIELD CAPTURE PROTOCOL
Six controls before the aircraft leaves the target
- Assign a target IDUse a site, asset and component naming convention before capture. “IMG_0042” is not enough when several panels, roofs or mechanical units look alike.
- Record environmental contextNote ambient conditions relevant to the inspection: wind, precipitation, solar loading, recent equipment state and anything that can create or erase a temperature contrast.
- Set gain for the expected rangeUse high gain for the tighter −20°C to 150°C range when appropriate; use low gain only when the target can exceed that range. Record the choice rather than switching without traceability.
- Control geometryKeep adequate target pixels, stable focus, repeatable distance and a viewing angle that reduces reflections. Capture a wider context frame before the close inspection view.
- Capture matched thermal and visible viewsUse the visible camera to preserve target identity, component condition and surrounding clues. The RGB image should make the thermal exception easy to locate later.
- Review before moving onCheck focus, saturation, occlusion and whether the target remains identifiable. Repeat the capture immediately if a reviewer would have to guess what the hot or cold region belongs to.
Safety limit: DJI lists no standard IP protection for the Matrice 4T. Do not turn a thermal data requirement into an unsafe wet-weather flight. The user manual also warns against exposing the infrared lens to strong energy sources such as the sun, lava or a laser beam.
03
KEEP THE MEASUREMENT DATA
Why the 16-bit R-JPEG is the evidence file
An 8-bit colourized JPEG is useful for presentation, but its palette is a rendered view. The R-JPEG retains radiometric information that DJI Thermal Analysis Tool 3 can read so the analyst can adjust measurement parameters, inspect spots or areas and compare exceptions after the flight. Preserve the original R-JPEG and treat exported screenshots or marked-up reports as derivatives.
Preserve the file that can be measured again. A screenshot can communicate a finding; it cannot replace the original radiometric record.
04
ANALYZE WITHOUT OVERCLAIMING
A temperature reading is conditional, not absolute
| Control | Why it matters | What to record |
|---|---|---|
| Emissivity | Different materials emit infrared energy differently; shiny metal can reflect its surroundings. | Material assumption and value used, plus any uncertainty. |
| Reflected / apparent temperature | Reflections can make a surface appear hotter or colder than it is. | Method or assumption used for the scene. |
| Atmospheric conditions | Humidity, temperature and path length affect transmission, especially at longer ranges. | Conditions and approximate range. |
| Target size | A small component occupying too few pixels can be averaged with its background. | Context and close view; note if measurement is qualitative only. |
| Operating state | Load, runtime, flow and recent shutdown can change the thermal pattern. | Equipment state and comparison baseline. |
DJI’s published laboratory accuracy for the Matrice 4T is conditional: in high gain it is ±2°C or ±2%, whichever is greater; in low gain it is ±5°C or ±3%, whichever is greater. Those figures do not eliminate field uncertainty. Reports should separate observed apparent temperature, temperature difference, suspected cause and confirmed diagnosis.
05
THE HANDOFF PACKAGE
Give the reviewer enough evidence to act
Locate
Site, asset, component and visible context image.
Measure
Original R-JPEG, gain, parameters and selected spot or area.
Compare
Baseline, peer component or repeat capture under comparable load.
Decide
Observed exception, uncertainty, priority and named follow-up owner.
Thermal data supports a maintenance or inspection decision; it does not replace an electrician, engineer, building specialist or other qualified professional where that expertise is required. The strongest report makes the next inspection or physical confirmation obvious.
06
CANADIAN OPERATING CONTEXT
Plan the flight and the evidence together
The Matrice 4T’s published takeoff weight is above 250 g, so it must be registered in Canada. The pilot certificate, airspace authorization and operating-category requirements depend on the exact mission, location and proximity to people—not simply on the fact that the aircraft carries a thermal camera. Confirm current Transport Canada requirements during mission planning.
BUILD THE WORKFLOW BEFORE THE FLIGHT
Review your Matrice 4T capture and handoff plan
SpeedyDrone can help align the aircraft, accessories and data handoff with the inspection outcome you need. Bring the target type, site constraints and required deliverable—not just a request for “thermal images.”
Request a Matrice 4T Workflow Review Review the live Matrice 4T listing →QUESTIONS CANADIAN BUYERS ASK
Frequently asked questions
Why should I keep the Matrice 4T R-JPEG file?
The 16-bit R-JPEG retains radiometric information that compatible DJI analysis software can interrogate after the flight. A colourized screenshot is a derivative and should not replace the original file.
What thermal resolution does the DJI Matrice 4T record?
DJI specifies a 640 × 512 thermal sensor at 30 Hz. Keep target size, focus, distance and viewing angle under control so the component occupies enough pixels for the intended assessment.
Which gain mode should I use on Matrice 4T?
High gain covers −20°C to 150°C and is appropriate when the expected target range fits inside it. Low gain covers 0°C to 550°C for hotter targets. Record the selected gain and avoid untraceable changes.
Does Matrice 4T Super Resolution make temperature measurements more accurate?
Do not equate a larger displayed image with a guaranteed increase in temperature-measurement accuracy. Use original radiometric data, adequate target pixels and controlled measurement conditions.
Do I need to set emissivity in DJI Thermal Analysis Tool 3?
Yes, when quantitative interpretation depends on material behaviour. Record the material and emissivity assumption, and account for reflections and environmental conditions rather than presenting the result as unconditional.
Can I fly the Matrice 4T in rain for a thermal inspection?
DJI lists no standard IP protection for Matrice 4T. Do not plan wet-weather exposure, and always follow the current manual, weather limits and mission risk assessment.
What should a thermal inspection handoff include?
Include original R-JPEG files, matched visible images, target IDs, capture conditions, gain and measurement assumptions, annotated findings, uncertainty and the required follow-up owner.
What Canadian drone requirements apply to Matrice 4T?
Because the aircraft is above 250 g, registration is required. Pilot certificate, airspace authorization and operating-category requirements depend on the mission and location; confirm current Transport Canada rules before flight.
Where can I download DJI Thermal Analysis Tool 3?
Use the official Matrice 4 Series downloads page and verify the current version and supported operating system before deployment. Do not rely on a third-party download.
VERIFIED SOURCES
