
Product Series : Thermal Imager
Surface temperature measurement and real-time thermal image analysis
Measurement Range: - 20°C ~ 550°C
Infrared Resolution: 640 × 512
NETD:≤40mK @F/1.0
Infrared Response Band: 8 ~ 14μm
Pixel Size: 12μm
Focal Length of Thermal Imaging Lens: 9.1mm
Spatial Resolution/IFOV: 1.32mrad
Measurement Distance: 0.3 ~ 3m
Field of View: 29.2° × 21.7°
Seven Color Palettes Available
Power Supply: Built-in rechargeable 26650 lithium battery, 5000mAh
Product Introduction
EM640 Infrared Thermal Imager combines surface temperature measurement and real-time thermal imaging. Unlike traditional infrared thermometers that require measuring components one by one, it saves time. Potential problems are clearly displayed on the color screen, and the center-point measurement cursor quickly and accurately locates and measures the target temperature.
Thermal images can be saved to this device, read via USB or saved to a computer for generating reports and printing. This product is small in size, easy to operate and highly functional. It is an ideal choice for fields such as power, electronic manufacturing and industrial inspection. The ETB640 infrared thermal imager can adjust the radiation coefficient to improve the accuracy of measuring objects on semi-reflective surfaces. The highest and lowest temperature cursors can guide users to the areas with the highest and lowest temperatures in the thermal image. There are 7 color palettes to choose from. These functions enhance the measurement accuracy and usability of the product.
ETCRMETER is a high-end brand of ETCR. All products are manufactured by ETCR, which also provides technical support and after-sales service.
Product Features
1. Adjustable emissivity improves measurement accuracy on semi-reflective surfaces
2. Max/min temperature cursors guide users to the hottest/coldest areas in the thermal image
3. 7 optional palettes
4. USB interface for uploading thermal images to PC for storage, analysis and printing.

Technical Parameters
| Specification Name | Parameters Description |
| Infrared Resolution | 640×512 |
| NETD | <40mK @F/1.0 |
| Palette | 7 types (Rainbow, Iron, Cool, White hot, Black hot, Red hot, Twilight) |
| Built-in Storage | 32GB (approx. 30GB available) |
| Menu Language | Chinese, English |
| Infrared Detector Type | Uncooled vanadium oxide infrared focal plane array |
| Infrared Spectral Band | 8~14μm |
| Pixel Size | 12μm |
| Lens Focal Length | 9.1mm |
| IFOV | 1.32mrad |
| Field of View | 29.2°×21.7° |
| Focus Mode | Manual focus |
| Temperature Range | Low: - 20℃~120℃ (- 4℉ ~ 248℉); |
| Temperature Accuracy | -15℃~550℃: ±2℃ or ±2%; |
| Temperature Resolution | 0.1℃ |
| Temperature Mode | Center spot / Hot-cold spot tracking |
| Emissivity Setting | 0.01~1.00 adjustable |
| Thermal Imaging Frame Rate | ≤25Hz |
| Visible Light Resolution | 640 × 480 |
| Display Size | 3.5-inch (640 × 480) |
| Image Display Mode | IR, Visible, Fusion, Picture-in-Picture |
| Image/Video Format | JPG/MP4 |
| Export Method | USB to PC |
| Image Analysis | PC offline analysis supported |
| Battery Type | Built-in rechargeable 26650 lithium battery |
| Battery Capacity | 5000mAh |
| Operating Time | ≥4 hours |
| Power Interface | Type-C |
| Auto Power Off | 5/10/20 minutes / Disable |
| Operating Temperature | -10℃~50℃ |
| Storage Temperature | -20℃~60℃ |
| Relative Humidity | 10%~85%RH non-condensing |
| Weight | Approx. 600g |
| Dimensions | 256mm × 95.8mm × 128.9mm |
Model Comparison
| Product Model | Pixel Size | Temperature Range | Infrared Resolution | Thermal Imaging Lens Focal Length |
EM160 | 17μm | -20℃~550℃ | 160×120 | 3.2mm |
EM256 | 12μm | -20℃~550℃ | 256×192 | 3.5mm |
EM384 | 12μm | -20℃~550℃ | 384×288 | 9.1mm |
EM640 | 12μm | -15℃~550℃ | 640×480 | 9.1mm |
EM160M | 17μm | -20℃~550℃ | 160x120 | 3.2mm |
EM256M | 12μm | -20℃~550℃ | 256×192 | 3.5mm |
Product Video

+86 13802922567 (Johnson Zhang)


+86 13809214246 (Wendy Wong)

10th Floor, Block 5, Liandong Intelligent Manufacture Park, No. 105, Shilong North Road, Nanhai District, Foshan City, Guangdong, China