Measurement and Sensor Systems
with conception
Precision Rotary Potentiometer
Precision Rotary Potentiometer
with resistance, current or voltage output
Today potentiometric angular position transmitters attain a still
more status with regard to the analogue measuring technique
as far as high-quality measurement tasks are concerned due
to the favourable value for money.
They are mainly used for
– Power braking control elements for railway vehicles
as well as ship telegraphs
– Rudder and propeller systems for ships
– Control drives for systems in the field of energy
management and chemical industry
– Lifting gears and slewing mechanisms of cranes
and excavators
– Tail vanes for meteorological measurements
– As dancer potentiometers for textile and
paper machinery
– As well as for measurements in the field of
mechanical, apparatus and medical engineering
Potentiometric transmitters have either a high-resolution
element of conductive plastic or high-resolution gold or
constantan wire with various resistance and angle values.
They are available in various sizes as single-turn or
multiple-turn potentiometers or in a multiple design.
For adjustment of the measuring range almost all series can
be provided with shorted sections, tappings and function
windings.
Some models are available with incorporated signal
converter providing current or voltage outputs in
configuration of 2, 3 or 4 wires.
To ensure reliability in very dirty atmospheres, oil-filled
potentiometers are available.
Moreover, to provide protection for all potentiometers from
mechanical damage, dusty and damp industrial atmospheres
a series of housings with a protection of the types IP 40 to
IP 68 is available; partly to be equipped with gearing and
Iimit switches.
2
Application ranges
Versions and circuit variations
Series PW
1
Resistance elements as ring winding with wire winding on an
anodised aluminium anchor ring can be provided with any
circuit, angle and resistance values.
2
3
5
4
7
6
8
9
Series PW
1. Wiper limited by stops
2. Wiper continuous rotation over 360° with reactive winding
3. Wiper continuous rotation over 360° without reactive winding
(sawtooth shape)
4. Any arrangement of shorted sections
5. Any arrangement of tappings
6. 7. 8. Special windings with characteristic curve of the
linear or sin/cos type
9. Two electrically isolated windings on a winding former,
angle ≤ 175°
Resistance elements as straight winding with wire winding on a
coated former of copper wire are used in potentiometers of the
multiple-turn or linear type but also in single-turn potentiometers
with active angles up to max. 350°.
1. Wiper limited by stops
2. Wiper continuous rotation over 360° only for purposes of
putting into operation
4. Any arrangement of shorted sections
5. Any arrangement of tappings
1
2
4
5
Series PK
Resistance elements of conductive plastic, imprinted on glassfiber reinforced supports. The max. active angle amounts to
355°. Smaller angles, tappings and shorted sections on request.
1. Wiper limited by stops
2. Wiper continuous rotation over 360°
4. Any arrangement of shorted sections
5. Any arrangement of tappings
7. Sin/cos characteristic curve
9. Two electrically isolated windings on a winding former,
angle ≤ 175°
1
2
4
5
7
9
3
Electrical specifications
Version
Design
Model types
Resistance element
wire-wound
PW 609
PW 611
straight-shaped
straight-shaped
Material of housing
Synchro size
Diameter of housing
PW 620
PW 613
straight-shaped
ring
PW 1023
straight-shaped
ring
ring
aluminium, anodised
9
11
13
20
23
22,2 mm
28 mm
36,5 mm
50,8 mm
60 mm
IP code of housing
IP 30
IP 30
IP 30
IP 30
IP 65
Diameter of shaft
3 / 6 mm
6 mm
6 mm
6 mm
6 / 10 mm
ball-/sintered bearing
ball-/sintered bearing
ball bearing
0,05 Ncm
2,5 Ncm
Shaft bearing
ball-/sintered bearing ball-/sintered bearing
Material of shaft
stainless steel
Adjustment speed max.
Torque
Torque (oil-filling)
360 U/min.
0,03 Ncm
0,04 Ncm
–
–
–
345°
max. active angle (± 0,5°)
340°
340°
max. stop angle
340°
340°
up to 10 kΩ
up to 10 kΩ
5%
5%
± 0,5 %
± 0,5 %
Value of resistance
Resistance tolerance
Linearity tolerance
0,05 Ncm
1 Ncm
–
1 Ncm
360°
350°
360°
345°
345°
up to 20 kΩ
5%
5%
± 0,2 %
360°
345°
up to 20 kΩ
2%
–
up to 20 kΩ
2%
± 0,2 %
2%
± 0,2 %
Resolution (windings)*
1033
1369
1851
2100
3434
max. 2321
max. 2321
Capacity
0,5 W
0,5 W
1W
2,5 W
1W
2,5 W
2,5W
Multiple version
threefold
threefold
Functional winding
–
–
–
–
Oilfilling
–
–
–
–
–
Switches
–
–
–
–
–
Connection
Weight **
Article number
soldered connection/wire soldered connection/wire
15g
20 g
1114Z70
1122Z01
sixfold
sixfold
soldered connection / wire
soldered connection / wire
plug / cable
40 g
70 g
380 g
1567Z01
1560Z10
* depend on resistance value and active angle
** single version
General Data
Temperature range
-30° C up to +80° C
Test voltage
550 V, 50 Hz, 1 min.
Vibration resistance
5 - 200 Hz, 10 g
Shock resistance
50 g, 6 ms
Life time
high life time due to a patent-registered spiral wiper 10 - 100 millions cycles
Fastening
depend on version: Central fixing, clamp fixing, threaded holes
4
twofold
1577Z01
1570Z02
5720Z52
Electrical specifications
Version
Design
Model types
wire-wound
PW 0045
PW 45
PW 45 W 3/10
PW 55
PW 70
Resistance element
straight-shaped
ring
straight-shaped
straight-shaped
ring
Material of housing
thermoplast
thermoplast
brass / thermoplast
thermoplast
thermoset
45 mm
45 mm
45 mm
£ 55 mm
70 mm
6 mm
6 mm
6 mm
Hollow shaft 6 x 6 mm
6 mm
sintered bearing
sintered bearing
sintered bearing
plastic bush bearing
sintered bearing
60 U/min.
360 U/min.
360 U/min.
60 U/min.
360 U/min.
0,5 Ncm / 5 Ncm
0,3 Ncm / 3 Ncm
0,5 Ncm
0,2 Ncm
0,5 Ncm
–
1 Ncm
–
–
1 Ncm
Synchro size
Diameter of housing
FSG design
IP code of housing
Diameter of shaft
Shaft bearing
IP 30
Material of shaft
Adjustment speed
Torque
Torque (oil-filling)
stainless steel
max. active angle (± 0,5°)
280° / 345°
360°
1080°
3600°
350°
360°
max. stop angle
280° / 345°
345°
1080°
3600°
345°
350°
Value of resistance
up to 25 kΩ
up to 20 kΩ
up to 25 kΩ
up to 20 kΩ
up to 50 kΩ
5%
2%
5%
5%
2%
± 0,5 %
± 0,3 %
± 0,1 %
± 0,5 %
± 0,15 %
max. 2312
max. 2321
max. 5783 max. 21049
1620
max. 3621
1,5 W
2,5 W
2W
1,5 W
6W
Multiple version
–
twofold
twofold
stackable
sixfold
Functional winding
–
–
–
Oilfilling
–
–
–
Switches
–
–
–
–
soldered connection
soldered-/screwed connection
plug Faston
soldered-/screwed connection
70 g
70 g
100 g
150 g
50 g
140 g
1511Z07
1500Z05
1302Z10
1300Z10
1573S10
1700Z04
Resistance tolerance
Linearity tolerance
Resolution (windings)*
Capacity**
Connection
Weight
Article number
soldered connection
* depend on resistance value and active angle
** single version
5
Electrical specifications
Version
Design
Model types
conductive plastic
PK 609
PK 611
PK 613
PK 613-G16
Resistance element
conductive plastic
Material of housing
aluminium, anodised
Synchro size
Diameter of housing
PK 620
PK 1023
9
11
13
20
23
22,2 mm
28 mm
36,5 mm
50,8 mm
60 mm
IP code of housing
IP 30
IP 30
IP 30
IP 30
IP 65
Diameter of shaft
3 / 6 mm
6 mm
6 mm
6 mm
6 / 10 mm
ball-/sintered bearing
ball-/sintered bearing
ball bearing
Shaft bearing
ball-/sintered bearing ball-/sintered bearing
Material of shaft
stainless steel
Adjustment speed max.
Torque
Torque (oil-filling)
1000 U/min.
0,03 Ncm
0,04 Ncm
0,05 Ncm
0,05 Ncm
2,5 Ncm
–
–
–
1 Ncm
–
max. active angle (± 0,5°)
345°
345°
350°
5632°
355°
355°
max. stop angle
340°
340°
345°
5632°
345°
345°
± 20 %
± 20 %
± 10 %
± 10 %
Value of resistance
Resistance tolerance
Linearity tolerance
1 kΩ up to 10 kΩ
± 2 % / ± 0,5 % **
±10%
± 2 % / ± 0,2 % ** ±1,5%/±0,15%**
Resolution
Capacity
± 0,5%
± 1,5 % / ± 0,1 % ** ± 1,5 % / ± 0,1 % **
almost infinite
1W
0,5 W
0,5 W
threefold
threefold
Oilfilling
–
–
–
–
Switches
–
–
–
–
Multiple version
sixfold
onefold
1W
1W
sixfold
twofold
Functional curve
Connection
Weight*
Article number
soldered connection/wire soldered connection/wire
soldered connection / wire
soldered connection/wire
plug / cable
15 g
20 g
40 g
120 g
70 g
380 g
1105Z02 / 1125Z01
1120Z02
1565Z02
2720Z50
1575Z02
5710Z52
* single version
** linearised version
General data
Temperature range
-30° C up to +80° C
Test voltage
550 V, 50 Hz, 1 min.
Vibration resistance
5 - 200 Hz, 10 g
Shock resistance
50 g, 6 ms
Life time
high life time due to a patent-registered spiral wiper 10 - 100 million cycles
Fastening
depend on version: Central fixing, clamp fixing, threaded holes
6
Potentiometric circuit and its characteristic curves
Standard winding
A
Wiper continuous rotation, without reactive winding,
only at beginning and end led out separately
U
u 11 - 12
13
α
+
11
-
Center tapping for benchmark
11
u 11 - 12
13
U
U+
12
1
U
12
2
α
+
U-
+
Winding with 2 different resistance segments
for buckled characteristic curves
E
0
11
-
12
1
U
+
α
+
Shorted section within winding
11
G
8a2
360°
Shorted section within winding
u 11 - 12
+
H
- A
+
U
13
U
sin
12
2
-
-
cos
8a3
U
12
U
u
2 sin α
13
U
F
8a1
u
2 cos α
u 11 - 12
W2
α
360°
U-
8a2
U
12
u
Sealed sin/cos functional windings with 90° offset wipers
-
W1
D
8a1
U+
12
α
360°
+
Sealed winding with 2 opposite tappings
and 2 opposite wipers continuous rotation
-
10
-
C
13
U
α
+
8a2
12
11
+ U
A - U12
U
u 12 - 12
1 2
11
-
u 11 - 12
U
12
B
U
+
α
13
7
Designs
PW / PK 611
PW / PK 609
24.6
19
6 h7
12.2
6
12
6.1
14
14
6 h7
28
22.2
PW / PK 620
PW / PK 613
47.6
33.32
6 h7
6.1
12.2
12.2
6.1
14
14
6 h7
50.8
36.5
PW / PK 1023
PW 0045
6 h7
50 f7
24
M12x0,75
13
58
24
10 h7
32
42 / M4
45
60
TK-
20
8
65
PW 45
PW 45W 3/10
6 h7
M10x1
6 h7
46,5
27,5
20,5
8
24
12 h6
5
32
45
45
M4
PW 55
PW 70
12 h6
5,95 -0,02
3,2
27,5
8
24
7,2
2,5
6 h7
6 +0,05
70
M4
46
50
55
PW 70M
30 h6
2
50
80
L
24
6 h7
M4
L
50 70 90 110 130 150
MI MII MIII MIV MV MVI
9
Angular Position Transducers
Type series PW / PK … -MU
Angular position transducers, equipped with resistance
elements of wire or plastic resistance elements with integrated
R/I or R/V converter for current or voltage output, optional with
a configuration of 2, 3 or 4 wires.
UB
mA
IA
4-wire system
with galvanic
isolation
Also available with galvanic isolation between supply and
output signal as far as version with 4 wires is concerned.
3- or
4-wire system
All types of transducers are provided with rear trimmer to
match output signal within wide ranges to the respective
angular deflection.
UB
mA
IA
UB
2-wire system
mA
IA
Electrical specifications
Type series
PW / PK 613-MU
–
Voltage output
PW / PK 620-MU
0 - 10 and 2 - 10 V respectively
Load resistance
≥ 2 kΩ
Current voltage
0 - 20 and 4 - 20 mA respectively
Load resistance
≤ 600 Ω
Supply voltage
18 - 33 V DC
mA
V
0%
100 %
mA
V
–
2-, 3- or 4-wire system
max. 1 % / 10 K; typically: 0,5 % /10 K
TC
± 0,2 %
Linearity
PW / PK 613-MU / 620-MU
± 0,1 %
± 0,1 %
0%
PW / PK 1023-MU
50 f7
47,6 -0,02
10 h7
58
45,6
24
14
6 h7
60
50,8
TK- 42 / M4
20
10
50 %
approx. 80 mA
Current consumption
4-wire system galvanically isolated
Zero point and rise to be
adjusted via trimmer
PW / PK 1023-MU
65
10 %
100 %
Specifications of protective housings
Mechanical data
Series A
42.5
30h6
5.9
6h6
~125
Pg9
62
76
8
Housing
alu, grey coated
IP code
IP 40 or IP 65
Shaft
stainless steel
Bearing friction
0,8 Ncm
Weight
ca. 0,4 … 1 kg
Article number
1708Z03
Housing suitable for accommodation
of any potentiometer of type series
PW70 in single design.
2
16
60
Mechanical data
Series G 90
20.4
~28
Pg9
-0.012
6-0.018
6
32.4
5.3
69.5
Tk- 80
90
alu, grey coated
IP 40 or IP 65
Shaft
stainless steel
Bearing
2 ball bearings
Bearing friction
IP 40 = 0,1 Ncm
IP 65 = 1,5 Ncm
Gearing
1:1 up to 1:10 *
1:1 up to 25:1 *
26:1 up to 125:1 **
Weight
approx. 1 kg
Article number
3601Z02
30 h9
45
27
97
107
6.5
3.5
2
Housing
IP Code
17 13
116
Housing suitable for accommodation
of any transmitter size up to
54 mm outside diameter.
* free from backlash, ** low backlash
Series GS 120
Mechanical data
25°
54
25°
24
6
4
Element for pressure compensation
21
10
85
7/3x120°
10 h6
40 h9
120 h9
160 ±0.5
Length according to order
Tk- 145
Housing
alu, grey coated
IP Code
IP 65
Shaft
stainless steel
Bearing
2 ball bearings
Bearing friction
1,5 Ncm
Gearing
1:1 up to 216:1 *
1:1 up to 1296:1 **
1:1 up to 1:10 ***
10
12
Weight
ca. 2,5 kg
Article number
1892Z
Housing suitable for accommodation of any
transmitter size up to 70 mm
outside diameter.
* free from backlash, ** low backlash
*** free from backlash or low backlash
11
Berlin
Fernsteuergeräte
Kurt Oelsch GmbH
Jahnstraße 68 + 70
D-12347 Berlin
Phone +49 (0 30) 62 91 - 1
Fax +49 (0 30) 62 91 - 277
Headquarter in Berlin
Kablow
Factory in Kablow
FSG Fernsteuergeräte
Meß- und Regeltechnik GmbH
OT Kablow
Mühlenweg 2 -3
D-15712 Königs Wusterhausen
Phone +49 (0 33 75) 269 - 0
Fax +49 (0 33 75) 269 - 277
Heppenheim
082011
Fernsteuergeräte
Kurt Oelsch GmbH & Co.KG
Weiherhausstraße 10
D-64646 Heppenheim
Phone +49 (0 62 52) 99 50 - 0
Fax +49 (0 62 52) 72 05 - 3
Factory in Heppenheim
info@fernsteuergeraete.de
www.fernsteuergeraete.de
12