CHN SPEC CT-25 Portable Transmittance Meter (Ultraviolet, Visible light, Infrared)

Measurement Structure: Transmittance

Calibration: Manual + Automatic

Test Indices:

Ultraviolet (peak wavelength 365nm)

Visible light (peak wavelength 530nm)

Infrared (peak wavelength 940nm)

Infrared (peak wavelength 1400nm)

Visible light (380nm-760nm, conforms to CIE optical function standard)

Test Accuracy: ±2%

Display Resolution: 0.10%

Sample Thickness: 13mm (maximum)

Dimensions: 115*70*14mm

Test Time: Less than 1 second

Battery: 750mA

Power Supply: 5V/1A

Screen: Full color screen, 135*240, 1.14 inches

Charging Interface: USB

Working Temperature: 0-40℃

Humidity: Under 85%, non-condensing

Accessories: USB cable, lanyard, user manual

Outstanding Features

Simultaneous measurement of 3 optical parameters: As soon as the material is inserted into the measurement slot, the device analyzes and displays 3 essential indices on the screen simultaneously:

• VLT (Visible Light Transmittance): The transmission rate of visible light, determining the brightness level of the glass.
• UVR / UVT (Ultraviolet): The ability to block/transmit ultraviolet rays, a core factor in protecting skin and interiors from aging and fading.
• IRR / IRT (Infrared): The ability to block/transmit infrared rays, the key factor determining the thermal insulation capability of the film.

Convenient U-shape slot design: The measurement slot is designed wide enough to easily and safely insert windshields, architectural glass, thin films, or sunglasses for measurement.

Ambient light interference resistance: Thanks to independent sensor and light source technology, the CT-25 operates extremely stably even when tested outdoors under direct sunlight, without results being interfered with or distorted.

Auto-calibration: The device features an automatic standardization function. When powered on with no blocking material in the measurement slot, the device will automatically adjust the parameters to 100% light transmittance, ensuring it is ready for the next measurement.

Intuitive display screen: The LCD screen integrated into the device body clearly displays all 3 measurement indices in a large font size, helping users easily read the results in any lighting condition.

Practical Applications

Thanks to its comprehensive ability to analyze 3 light bands and its absolute portability, the CHN SPEC CT-25 is an “inseparable” device in the following fields:

• Automotive and architectural window tint film industry: Consultants and technicians use it to visually demonstrate the thermal insulation (IR) and UV blocking effectiveness of window tint films before and after installation for customers.
• Architectural and safety glass production: Quickly check the optical quality of laminated safety glass and insulated glass units (Low-E glass) right at the construction site.
• Eyewear & safety glasses production: Evaluate the anti-glare capability (reducing VLT) and UV eye protection of fashion sunglasses and occupational safety glasses.
• Plastic film & packaging production: Inspect the light-blocking and UV-blocking levels of food preservation cling films and specialized packaging.