3.3
Construction and function
Construction of the device
12
3
4
Figure 1: Construction of the MAX48
1
M12 connector system
2
Protective housing (electronics)
3
Position magnet
4
Pressure pipe
Connector system:
The M12 connector system requires very little time to attach. It is suitable for applica‐
tions in harsh environments up to IP69K (when using a suitable mating connector).
Protective housing (electronics):
The housing is designed to be installed in a hydraulic cylinder and protects the sensor
electronics against external influences.
Position magnet:
This is the only moving component in the measuring device when installed in the pis‐
ton. The position magnet is located inside the piston and moves over the pressure pipe
without contacting it. The magnet field thereby produced identifies the current position
of the piston.
Pressure pipe:
Pressure-resistant construction - is inserted in the piston rod of the cylinder. It contains
the hermetically protected magnetostrictive sensing element.
Principle of operation
2
1
3
4
5
6
7
Figure 2: Schematic of the magnetostrictive measurement principle
1
Magnet field of the current pulse
2
Magnet field of the position magnet
3
Magnetostrictive sensor component
4
Current pulse
5
Sound wave converter
PRODUCT DESCRIPTION
3
8021473/2017-08-08 | SICK
T E C H N I C A L I N F O R M A T I O N | MAX48
9
Subject to change without notice
