Semiconductor Group
1
07.96
The contactless potentiometer comprises a GaAs Hall effect sensor actuated by two
permanent magnets which are mounted on the end of the potentiometer spindle. The
device is complete with supply voltage stabilisation and series connected output
amplifier. Two measuring ranges are offered, 0
...
30
and 0
...
75
, and the output is given
as a current of 0
...
20 mA linearly proportional to the angle of rotation. Temperature
compensation circuitry is also included.
Type
Ordering Code
FP 310 L 100-30
Q65310-L100-U30
FP 310 L 100-75
Q65310-L100-U75
Contactless Potentiometer
FP 310 L 100
Dimensions in mm
Features
Devoid of friction and
abrasion at contact
point
No electrical contact
noise
Insensitive to
contamination,
moisture ingression,
corrosion and
vibration
Low operating torque
Long lifetime
Typical applications
Angular encoder
Electric vehicles
Semiconductor Group
2
FP 310 L 100
Maximum ratings
Electrical characteristics (
T
A
= 25
C)
Mechanical ratings
Parameter
Symbol
Value
Unit
Operating temperature
T
A
25 / + 70
C
Supply voltage
V
IN
15
V
Supply current
I
IN
75
mA
Linear angle of rotation
FP 310 L 100-30
FP 310 L 100-75
0
...
30
0
...
75
deg.
deg.
Output signal for corresponding angle
of rotation
I
OUT
0
...
20
mA
Load resistance
R
L
0
...
500
Temperature error in the range
25
C
...
+ 70
C
3
% FS
Linearity
FP 310 L 100-30
FP 310 L 100-75
F
L
1
2
% FS
% FS
Hysteresis
1
% FS
Sense of rotation (looking onto shaft)
clockwise
Required torque
M
d
0.2 typ.
Ncm
Max. perm. compressive axial force
F
a compr.
10
N
Max. perm. tensile axial force
F
a tens
3
N
Max. perm. radial force
F
r
10
N
Max. perm. speed
n
3000
min
-1
Cycles (life)
L
10
8
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