YLY-H Polarization Stress Analyzer

The YLY-H intelligent polarization stress meter can be widely used for measuring internal stress in glass containers, plastic containers, and other materials. This instrument provides both qualitative and quantitative testing modes, utilizing the principle of interference color sequence in polarized fields to accurately measure the stress values inside glass. It is an instrument used by pharmaceutical companies, glass product factories, and laboratories to measure the stress values of optical glass, glass products, and other optical materials.

Product Features

There are two experimental modes, qualitative and quantitative, with adjustable experimental space and wide applicability.

The instrument can store 200 sets of data, with 50 measurement values for each set of data.

Using a high-precision angle encoder for measurement, the measurement accuracy is better than 2.0Nm.

Touch screen display, which can simultaneously display the measurement angle and optical path difference values, allowing users to intuitively obtain the required data, making the measurement intuitive and easy to read.

◎ The dark field does not require calibration and uses a type encoder. The dark field of the polarization field is always at the zero angle point, so there is no need for user calibration. For the zero point, it avoids errors caused by manual calibration of the dark field of view.

Green and energy-saving, using more energy-efficient and environmentally friendly LED light sources, saving more than 80% energy compared to traditional light sources.

Equipped with a micro printer for easy printing and output of test data.

Equipped with a USB interface, it can be connected to PC software to control the operation of the instrument.

Automatically save historical experiment records, query locally, and export to EXCEL format on the computer for saving.

◎ Touch screen operation user three-level permission settings, * GMP permission authentication.

◎ Test record auditing and tracking functions.

The test results are synchronously uploaded to the cloud server for storage, and can be viewed worldwide with internet access.

Dual backup of local and cloud data to ensure data is not lost.

Test Principle

YLY-H internal intelligent polarization stress meter is an instrument that uses the principle of polarized light interference to check the internal stress of glass or the birefringence effect of crystals. Due to the presence of sensitive color plates and the application of 1/4 waveplate compensation method, this instrument can not only qualitatively or semi quantitatively measure the internal stress of glass based on the interference color sequence in the polarization field, but also accurately and quantitatively measure the internal stress value of glass.

Application field

Suitable for polarized internal stress testing of glass infusion bottles, glass tube (molded) drug bottles, tube (molded) injection bottles, ampoules, oral liquid bottles, etc; It can also be used to test the internal stress of glass containers such as beer bottles and Baijiu bottles.

Placement position and method of glass products:

A、 Whether measuring the bottle bottom or the bottle wall, the center (axis) of the product should be at approximately the same height as the instrument's optical axis.

B、 For bottle bottom measurement, place the test sample in the field of view and observe the bottle bottom through the bottle mouth, with the bottle mouth facing upwards and towards the observer's side.

C、 For bottle wall measurement, place the test sample in the field of view so that the axis of the test sample forms a 45 ° angle with the polarization plane