Scaime eNod3-C, Инструкция пользователя

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e Nod3- C
Digital Transmitter
e Nod3- C :
User’s instructions
NU-eNod3C-E-0911_165702-I
12/22
5 CALIBRATION
5.1 Calibration types
:
There are different possible calibration types (See examples in the documents: ‘
SCMBus
Communication’ Ref. 165 706 Appendix A and ‘
ModBus RTU
Communication’ Ref. 165 704
Appendix A):
- Physical calibration using the load cell through a known reference. This type of calibration
can be done with 1, 2 or 3 known references.
- Theoretical adjustment by setting the load cell sensitivity and capacity.
- Correction of the initial calibration value.
5.2 Linearization correction:
For an installation with a non-linearity:
The linearization formula is as follows:
The coefficients A, B and C are defined using the
e Nod View
software calculation tool.
Corrected measurement = Meas – A (Meas)
2
– B(Meas) – C
where Meas = Current measurement
Linearization of the
measurement / Weight curve
Measurement
Weight
Theoretical
linear
measurement
Non-linear
measurement
Fig. 1