84
Commissioning
WAGO-I/O-SYSTEM 750
750-451 8 AI RTD
Manual
Version 1.1.0
•
Example with "Resistance measurement 2" setting
The equation for calculating the scaled process value with the “Sensor type
Resistance measurement 2” setting in standard format with corresponding
variables is:
((Unscaled process value × gain multiplier) / 256) + scaling offset = scaled
process value in Ohm
Example:
((100°Ohm × 384) / 256) + 15 = 165 Ohm
Other example calculations for the “Resistance measurement 2” sensor type in
standard format are available in the table below.
Table 66: Examples of a Scaled Process Value, Standard Format, Resistance measurement 2
Gain multiplier Scaling offset in
Ohm
Scaled process value
at 100 Ohm*
at 155 Ohm*
at 300.2 Ohm*
256 (1**)
0
100 Ohm
155 Ohm
300.2 Ohm
256 (1**)
10
110 Ohm
165 Ohm
310.2 Ohm
384 (1.5**)
15
165 Ohm
247.5 Ohm
465.3 Ohm
512 (2**)
20
220 Ohm
330 Ohm
620.4 Ohm
640 (2.5**)
20
270 Ohm
407.5 Ohm
770.5 Ohm
*) Unscaled process value
**) Multiplier (= gain multiplier/gain divisor)
Other example calculations for the “Resistance measurement 2” sensor type in S5-
FB250 format are available in the table below.
Table 67: Examples of a scaled process value, S5-FB250 Format, Resistance measurement 2
Gain multiplier Scaling offset in
Ohm
Scaled process value
at 100 Ohm*
at 155 Ohm*
at 300.2 Ohm*
256 (1**)
0
100 Ohm
155 Ohm
300.0 Ohm
256 (1**)
10
110 Ohm
165 Ohm
310.0 Ohm
384 (1.5**)
15
165 Ohm
247.5 Ohm
465.5 Ohm
512 (2**)
20
220 Ohm
330 Ohm
620.5 Ohm
640 (2.5**)
20
270 Ohm
407.5 Ohm
770.5 Ohm
*) Unscaled process value
**) Multiplier (= gain multiplier/gain divisor)
