SIMEAS-T - Transducer with auxiliary power
21
Arrangement of the balancing potentiometers
Transducer with linear characteristic curve from 0 to A
N
Full-scale value
Feed E = E
N
± 0.05% E
N
,
set output end value with trim potentiometer
R33
Set A = A
N
± 0.2% A
N
. Check intermediate values.
Transducer with linear characteristic curve from I
A
4 mA to 20 mA
4 mA
only connect auxiliary power, input (short terminals 11 and 12) and
set the output value A = 4 mA ± 0.2% A
N
with trim potentiometer
R34
.
20 mA
Feed E = E
N
± 0.05% E
N
,
set output end value with trim potentiometer
R33
Set A = 20 mA ± A
N
. Check intermediate values.
Transducer with expanded end range and suppressed start range
Example: Transducer with range:
0 to 0.8 to 1.2 E
N
≙
0 to 0 to A
N
Start value
Feed U
E
= 0.8 U
EN
± 0.05%, set the output end value with trim potentiometer
R32
Set A = 0 A
N
+ 0.1% I
AN
.
Full-scale value
Feed = 1.2 E
N
± 0.05% E
N
, set output value with trim potentiometer
R33
Set A = A
N
± 0.1 % A
N
.
Check start and full-scale values, repeat calibration if necessary.
