Page 44 - Glass-Technology International no. 3/2017

STRESS MEASUREMENT

Jeffoptics Beijing Jeffoptics

Co., Ltd. is

continuing to

develop its

FURTHER DEVELOPMENT series of stress
measurement

IN GLASS SURFACE metrrs to cater

to the needs and
STRESS MEASUREMENT demand of today’s

glass sector.

ith the aim of JF-3E GLASS SURFACE range is 200MPa (stand- With the JF-3E,
providing its cli- STRESS METER ard wedge)/40Mpa(high
Wents with better sensitivity wedge). The full glassmakers
products for glass sur- The JF-3E glass surface scale resolution is 0.1 MPa.
face stress measurement, stress meter is used for the JF-3E glass surface stress now have easy
Jeffoptics has developed non-destructive measur- meter is an optical pola-
three glass surface stress ing of the surface stress operations,
measurement devices. of tempered glass, heat-
These devices provide strengthened glass and an-
more accurate results in nealed glass on uncoated high resolution,
shorter time, with more tin sides. The product com-
user friendly operations. plies with ASTM C1279, and robustness
The powerful PC software ASTM C 1048, EN 12150
interface provides auto- and EN 1863. The device for glass
matic and manual meas- is calibrated with ASTM C
urement, set and report 1377. The measurement surface stress
functions. Moreover, it is
no longer necessary for measurement.
operators to carry out field
calculations as the PDA is
equipped with all meters.
The PC software and PDA
can increase measurement
accuracy, reduce operator
errors, and also reduce op-
erator workload.

42 Glass-Technology International 3/2017