SIMEAS-T - Transducer without auxiliary power
18
Calibration of the voltage transducer
Start value
Feed U
E
= 0.2 U
EN
± 0.05% U
EN
, with trim potentiometer "min" set the output value
I
A
= 0.2 I
AN
± 0.2% I
AN
.
Full-scale value
Feed U
E
= U
EN
± 0.05% U
EN
, set the output end value I
A
= I
AN
± 0.2% I
AN
with trim
potentiometer "max".
Repeat start and full-scale value calibration until the specified tolerances are achieved.
Calibration of the voltage transducer with suppressed start range and expanded
end range
Example: Transducer with range
0 to 0.8 to 1.2 U
EN
= 0 to 0 to I
AN
Start value
Feed U
E
= 0.8 U
EN
± 0.05% U
EN
, set the output value I
A
= 0 + 0.1% I
AN
with trim
potentiometer "min".
Full-scale value
Feed U
E
= 1.2 U
EN
± 0.05% U
EN
, set the output value I
A
= I
AN
± 0.1% I
AN
with trim
potentiometer "max".
Check start and full-scale values, repeat calibration if necessary.
To set the potentiometer, refer to the previous schematic diagram.
