Commissioning
EL33xx-00x0
152
Version: 4.2
User calibration is enabled via index
. Parameterization takes place via the indices
•
, user calibration)
•
Thermocouple gain (index
User scaling, index
The user scaling is enabled via index
. Parameterization takes place via the indices
•
User scaling offset
The offset describes a vertical shift of the characteristic curve by a linear amount.
At a resolution of 0.1°, 1 digit
(dec)
corresponds to an increase in measured value by 0.1°
At a resolution of 0.01°, 1 digit
(dec)
corresponds to an increase in measured value by 0.01
•
User scaling gain
•
The default value of 65536
(dec)
corresponds to gain = 1.
The new gain value for 2-point user calibration after offset calibration is determined as follows:
Gain_new = reference temperature / measured value x 65536
(dec)
Calculation of process data
The concept "calibration", which has historical roots at Beckhoff, is used here even if it has nothing to do with
the deviation statements of a calibration certificate. Actually, this is a description of the vendor or customer
calibration data/adjustment data used by the device during operation in order to maintain the assured
measuring accuracy.
The terminal constantly records measured values and saves the raw values from its A/D converter in the
ADC raw value objects 0x80nE:01, 0x80nE:02. After each recording of the analog signal, the correction
calculation takes place with the vendor and user calibration data as well as the user scaling, if these are
activated (see following picture).
Fig. 172:
Calculation of process data
Summary of Contents for EL33-00 Series
Page 2: ......
Page 6: ...Table of contents EL33xx 00x0 6 Version 4 2...
Page 17: ...Product overview EL33xx 00x0 17 Version 4 2 Fig 10 EL3312 Fig 11 EL3314...
Page 18: ...Product overview EL33xx 00x0 18 Version 4 2 Fig 12 EL3314 0002 Fig 13 EL3314 0010...
Page 61: ...Mounting and wiring EL33xx 00x0 61 Version 4 2 Fig 45 EL3314 0010 Fig 46 EL3314 0090...
