Actuators for Regulating Duty
This device is a signal converter for the
transformation of resistance value into
proportionate current signal. It can also be
placed in the actuator where the position
determined by the potentiometer is converted
Electronic position transducer RWG 1001
Description of Electronic Units
A potentiometer is used as sensor for actuator.
Single turn wire wound potentiometer with
4.7 k ohms with linearity of + 0.5 % is available
for this purpose. It is available in single or
Sensor for Actuator
tandem version.
RWG 1001
Technical Data
Resistance 4.7 k ohms + 0.5 %
Power rating
o
3 Watt at 40 C
Angle of rotation
oo
275 + 5
+ 0.5%
Linearity
Technical Data - RWG 1001
Configuration 3 Wire
from 50 to 100%
Max. 0.2%
o
0.2% 10 C
0.05%
24V DC
min. 18, max. 33V
0-20 mA
(4-20 mA)
+ 25%
Supply Voltage
Displacement of end
position, max.
Influence of supply
voltage variation
Linearity not considering
potentiometer
150 k ohms
Input resistance
Temp. drift
Displacement of zero
position, max.
Output Current
Technical Data - RWG 2002
Configuration 2 Wire
from 60 to 100%
Max. 0.15%
< 1%
150 k ohms
24V DC
min. 18, max. 33V
4-20 mA
+ 25%
Supply Voltage
Displacement of end
position, max.
Influence of supply
voltage variation
Linearity not considering
potentiometer
Input resistance
Displacement of zero
position, max.
Output Current
This is basically same as RWG 1001, however
with 2 wire system. The linearity is less than 1%.
As position transmitter, preferably a
potentiometer of 4.7 k ohm should be used so
that the reference voltage source is not over
loaded. This device requires 24V DC power
supply regulated within + 15%. Auma power
supply unit PS01 is recommended for this
purpose. RWG 1001 is a 3 wire system and is
Electronic position transducer RWG 2002
RWG 2002
having linearity of 0.05 %.
17
into 4-20 mA current signal.
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