Compatible substrates
Ferrous metal
DONGRU DR15A Fire-Resistant Coating Thickness Gauge
Coating Thickness Gauges
DR15A
DONGRU DR15A Fire-Resistant Coating Thickness Gauge
For checking thick fire-protection and heavy-duty protective coatings on suitable ferrous metal substrates.
Request technical guidanceCapabilities / DR15A
What the product record supports.
Four confirmed points: material, measurement, readout and power. Full values are in the specification table below.
Measurement
magnetic · 100μm-15mm · ±3%H+2μm
Readout
0.1μm/1μm/0.01mm · 2.8-inch color display
Power & body
3.7V lithium battery（2000mAH） · 141×69×27mm / 242g
In practice
Where the DR15A is used
Check fire-protective and heavy-duty coatings on ferrous steel, from thin primer to a 15 mm build. The magnetic probe is matched to thick coatings, and readings show on the colour screen at the point of inspection.
01
Fire-protective coatings
Magnetic induction
Measure intumescent and other fire-protective coatings on steel structures, over a range that runs from 100 μm to 15 mm.
Ferrous steel only — not for aluminium or other non-ferrous substrates.
02
Thick build, wide footprint
Φ30.5 mm minimum area
Thick coatings need a larger contact patch: a Φ30.5 mm minimum measurement area and 0.8 mm minimum substrate thickness.
At curved parts the radius must be at least 20 mm convex or 100 mm concave.
03
On-site readout
3.7 V 2000 mAh rechargeable
15
mm · maximum coating range
Reading, group number and max / avg / min show together on the 2.8-inch colour screen; the built-in 2000 mAh cell is rechargeable.
Stated accuracy is ±3% of H + 2 μm; confirm suitability for the coating thickness involved.
Magnetic induction · 100 μm–15 mm · 2.8-inch colour LCDDR15A · Fire-resistant coating thickness gauge
Where it stopsFerrous metal substrates only. Not for non-ferrous metals, and not for coatings on concrete or masonry. On curved or small parts, respect the stated radius and measurement area.
Model / DR15A
Technical specifications
Values come from one shared product record; confirm suitability for your measurement task.
100μm-15mm
Measuring range
Confirm your material, measuring method and application before selecting an instrument.
Measurement
- Measurement method
- magnetic
- Measuring range
- 100μm-15mm
- Compatible substrates
- Ferrous metal
- Accuracy
- ±3%H+2μm
- Resolution
- 0.1μm/1μm/0.01mm
- Minimum substrate thickness
- 0.8mm
- Minimum measurement area
- Φ30.5mm
- Minimum curvature
- convex 20mm;concave 100mm
Instrument & environment
- Model
- DR15A
- Product code
- DR-CT-DR15A
- Display
- 2.8-inch color display
- Power supply
- 3.7V lithium battery（2000mAH）
- Dimensions / weight
- 141×69×27mm / 242g
- Operating environment
- 0℃-60℃, 20%-90%RH
DR15A
Discuss this model
Tell us your material, expected range and site conditions. We can help check the instrument and probe fit.