Principle of NYL-150D Polarized Stress Meter
Usually, glass is an isotropic homogeneous material, and when there is stress, it exhibits anisotropy, resulting in birefringence of light.
Place a quarter wave plate in the field of view and adjust the zero point of the polarizing stress meter to present a dark field of view. Place the sample in the field of view and qualitatively measure the presence or absence of internal stress in the glass based on the interference color sequence in the polarization field, or quantitatively test the value of internal stress in the glass.
Technical Description
（1） Product Features
Qualitative testing mode for quick determination of stress
Quantitative test mode, digital display of optical path difference, quantitative evaluation of stress
The brightness of the light field can be adjusted according to the laboratory environment
Desktop design, compact and lightweight
Adjustable experimental space design, flexible expansion of experimental range
Intelligent operation, no need to manually convert optical path difference through the angle of the polarizer
The instrument has a GMP level 3 permission protection level, and the operator has a unique login name and password combination to enter the instrument operation
Local data storage, automatic processing, and statistical testing data functions that meet GMP requirements
（2） Technical parameters
Optical path difference display value 0.1nm
Test accuracy 2nm
Polarization field diameter 150mm
Polarization lens rotation angle 360 °
The brightness of the light field shall not be less than 120cd/㎡
Sample size Φ 97mm
The maximum distance between the polarizing mirror and the polarizing mirror is 340mm
Power supply AC220V, 50Hz, 40W
Net weight 7kg
Testing standards
This instrument meets multiple standards: YBB00332002-2015, YBB00162003-2015
Testing Applications
Based on the principle of polarized light interference, it can be widely used to measure the internal stress of ampoule, oral liquid bottle, penicillin bottle, infusion bottle, wine bottle, condiment glass bottle, jar head bottle and other glass products.
Product configuration
Host, power cord, micro printer, permission management system
