Transmission Meter AT 173 window Tint Meter

The AT-173 Transmission Meter is a portable, battery-powered instrument designed for measuring the light transmittance of transparent and translucent parallel-plane samples. Typical test objects include automotive glass, aerospace transparent components, glass products, plastic sheets, and films.

The instrument can also be used to evaluate the turbidity or clarity of liquid samples such as water, beverages, and other transparent liquids.

The measurement principle is based on the ratio of transmitted luminous flux to incident luminous flux through the test sample.

Applications

(1) Automotive industry: window tint films, windshields, side windows, laminated automotive glass.

(2) Aerospace industry: aircraft windows, transparent panels, observation windows.

(3) Glass products: architectural glass, safety glass, coated glass, optical glass.

(4) Plastic materials: plastic sheets, plastic films, acrylic plates, polycarbonate panels.

(5) Liquid samples: water, beverages, and other transparent liquids for turbidity or clarity assessment.

(6) Quality inspection & field testing: production inspection, incoming material testing, exhibitions, on-site measurements.

Standards

(1) GB/T 2410 — Determination of light transmittance of transparent plastics

(2) ASTM D1033 — Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics

(3) JIS K 7105 — Testing methods for optical properties of plastics

(4) ISO 13468 — Plastics — Determination of total luminous transmittance

(5) EN 410 — Glass in building — Determination of luminous and solar characteristics

Features

(1) Portable, battery-powered design suitable for laboratory and on-site testing.

(2) Digital display with wide measurement range and high resolution.

(3) One-key calibration function for fast and convenient operation.

(4) Rugged and compact structure, easy to carry and suitable for field use.

(5) USB interface for data output and communication with PC.

(6) Optional Bluetooth wireless data transmission for mobile and remote data collection.

Technical Parameters

Accessories

Standard Accessories

(1) Transmission Meter AT-173 (main unit) ×1

(2) Portable carrying case ×1

(3) User manual ×1

Optional Accessories

(4) USB data cable for PC communication

(5) Bluetooth™ data output module

Test Procedures

(1) Prepare the instrument and press the Power/Select key to turn on the device.

(2) Press the Power/Select key to select the required measurement mode. Each press switches the mode in the following sequence:

  • Visible light transmittance

  • UV transmittance

  • IR transmittance

  • Tri-light cycle mode

(3) After power-off and restart, the instrument automatically resumes the last selected measurement mode.

(4) Confirm that calibration is correct before measurement. If there is any doubt about accuracy, perform calibration again according to the calibration procedure. Calibration results are automatically stored.

(5) Clamp the instrument onto the sample to be measured. The displayed value corresponds to the transmittance under the selected measurement mode.

(6) After measurement, press the Power key until “OFF” appears to turn off the instrument.

Note: Due to the photoelectric measurement principle, avoid operating the instrument under strong ambient light.

Maintenance

(1) Keep the optical window clean; wipe gently with a soft, lint-free cloth.

(2) Remove batteries when the instrument is not used for an extended period.

(3) Store the instrument in the carrying case to prevent dust and mechanical damage.

(4) Avoid exposure to strong light, high humidity, or corrosive environments.

(5) Periodically verify calibration using reference samples if available.