Technical Specifications
Item no. 10408114, Revision 02
28 ( 52 )
6.8
Eddy current sensor
6.8.1
Measurement principle
The displacement measurement system operates without contact on the basis
of an eddy current.
An electromagnetic coil field induces eddy currents and this causes the resis-
tance of the built-in coil to change.
q
An electrical signal is produced from this change.
q
The controller conditions the signal ready for the user.
6.8.2
Technical Specifications
The specified data are valid for
a reference temperature of
20°C.
Measurement range
400 µm
Start of measurement range
~ 150 µm
Linearity
± 5 µm
Resolution
1 µm
Limit frequency (analog)
20 mV / µm
Sensitivity
q
Displacement
q
Temperature
20 mV / µm
0.1 V / °C
Temperature stability
q
Sensor
q
Controller
± 0.01% of measurement range / °C
± 0.05% of measurement range / °C
Interfaces
q
Analog
q
Digital
0.2 ... 10 V
DC
(optional: 4 ... 20 mA)
on request
Temperature output
0.2 … 10 V
DC
Supply voltage
+24 V
DC
Sensor
EMU 04-C080
Parameter memory and temperature sensor
integrated in sensor housing
Sensor replacement
Sensor-specific data record is read out
automatically from the EEPROM
cable length
q
Sensor
q
ECM6
0.8 m
6 m
