model: FSM-6000LEIR(SURFACE STRESS METER)

FSM-6000LEIR

* Instruments that are developed to measure surface stress of chemically tempered glass and thermally tempered glass automatically.
Be equipped with a computer(PC) that reduces measurement errors happened by each operator. Besides,complex calculation required to calculate surface stress and depth of layer for chemically tempered glass is quickly solved by PC automatically. Data storing in PC memory directly makes quality control easily.* It become possible to measure chemically tempered double ion exchanged glass.
Newly released FsmV software become possible to measure double ion exchanged glass in addition to thermally tempered glass and single ion exchanged glass that were applied with former software.

* Graphic displays of sectional stress distribution.
Evaluation of double ion exchanged glass is easily performed because distribution of sectional stress is graphically displayed.

* Over 120um of stress layer is measurable.
Depth of stress layer is calculated based on the number of interference fringes. In deeper stress layer,counting the number of the fringes precisely tends to become less able to do because the deeper stress layer displays more interference fringes and it narrows intervals between the fringes.
It is known that using a longer wavelength of light source makes the number of interference fringes decrease.(Please refer to pictures below.)
Although,the number of the fringes appearing on the picture with 596nm narrows intervals between the fringes on the right side,in the case of 790nm,precise data are acquired because the intervals are extended according to the number of the fringes is decreased by using longer wavelength.

Specification

Object to be Measured Thermally tempered glass (Tin side)
Single chemicaly tempered glass, Double chemicaly tempered glass
□ Shape: Flat glass
□ Size: Over 10×10 mm
Range Stress: 0-1000MPa
Depth :10-200μm (The upper limit value changes by the condition.)
Accuracy ±20MPa
Light source LED 790±10nm
Weight 14kg(head)、7.9kg(PC)、3kg(monitor)
Electric Source 100-240VAC 50/60Hz
PC Installed OS and measuring soft
OS Windows 10
Option * Automatic measurement of the glass thickness (A thickness measuring unit is  optionally available.)
* Dropping immersion liquid (An automatic dispenser is optionally available.)