Technical Specifications
Item no. 10405047-07, Revision 02
20 ( 44 )
6.6
Displacement measuring system (Ott-Jakob)
Example of design: Target ring/
sensor
1
Target ring
2
Sensor
A cylindrical, inductive analog sensor is located in the unclamp unit.
In this analog sensor the tie rod connection moves in an axial direction. A tar-
get ring sits on the tie rod connection, and is responsible for the change of
output signal. The signal increases (as seen from the cable exit) as the immer-
sion depth of the target ring increases.
q
The signal is also available during rotation.
q
The sensor electronics convert the signal from the sensor into an analog
output signal.
Ä
4-20 mA / 2-10 V
q
The output signal can be analyzed digitally with the position controller (ac-
cessory).
6.6.1
Technical Specifications
Operating voltage (dependent on R
B
)
15-18 V
DC
18-30 V
DC
Burden R
B
≤ 250 Ω
≤ 500 Ω
Current consumption
max. 70 mA
Measurement range
with target ring - Ø 8 / 10
with target ring - Ø 5
0-25 mm
0-15 mm
Linearity
± 2% of measurement range
Temperature stability
± 0.02% / °C
Protection against overvoltage, reverse polarity, short circuit, no-load
operation
Limit frequency
f
g
= 800 Hz
Outputs
Current
Residual ripple (dependent on R
L
)
4-20 mA
< 0.005 mA
SS
< 0.001%
with R
L
= 100 Ω
Voltage
Residual ripple
Permissible load R
L
2-10 V
< 5 mV
SS
> 1 kΩ
