1. A016_e
Eddy current displacement sensors
eddyNCDT
Thickness measurement of glass
The specification of the thickness of glass panes is Technical details
an optimization process between a required - Measuring range: 15 mm
mechanical strength and efficient use of materials. - Accuracy: ± 0,03 mm
In the manufacturing process the glass thickness is - Resolution: 0,01 mm (0,002 mm)
measured and the conformance to prescribed - Band width: static
tolerances is monitored. The measurement is
carried out with displacement sensors working on Ambient conditions
the eddy-current principle. Here, the sensor hovers - Temperature: 0 - 50 °C
over the glass surface and measures through the
glass to a metal plate situated behind it. The values Reasons for the system selection
can be read off directly on the device; an analog - Ease of operation
output voltage facilitates further evaluation. - Direct reading of the values
The eddy-current measurement technique is also - Glass material does not affect the measurement
employed in a similar arrangement for the accuracy.
measurement and monitoring of the strip thickness - High accuracy
of insulation materials.
Principle
Sensor cable
Back panel
with hub
Sensor Glass
Reference plate
MICRO-EPSILON A member of micro-epsilon group.
Koenigbacher Str. 15 Tel.: 0 85 42/1 68-0 info@micro-epsilon.com Certified DIN EN ISO 9001 : 2000
94496 Ortenburg / Germany Fax: 0 85 42/1 68 90 www.micro-epsilon.com Modifications reserved Y9781016