Berthold Duo Xpert - GPC calibration

7 Main Menu Device Setup LB 470 Level
118
56925BA2 Rev. 03, 11/2017
NOTICE
An additional compatible Berthold probe for measuring the gas density is ab-
solutely necessary for the gas properties compensation. The probe is connected
to the level measurement via the slave interface.
Fig.
98 Submenu ″GPC″
GPC calibration
Device settings | Setup | Calibration | GPC | GPC calibration
The submenu ″GPC calibration″ is used for the adaptation of the measurement sys-
tem to the respective environmental conditions, the actual radiation activity and
the adaptation of the background radiation (background).
The check box ″GPC enabled″ (Fig. 99, item 1) can only be selected when a detector
is configured for gas density measurement and under Units (Device Settings | Setup
| System | Units) "PV" the unit% is selected.
1
2
3
4
5
Check box "GPC enabled"
Check box Reference count rate [cps] for the detector under calibration condi-
tions
1F
2
Input field Background (background radiation) [cps]
Input field Factor M (Manual correction factor)
2F
3
Input field Max. GPC factor
Fig.
99 Submenu GPC calibration
2
Calibration conditions exist when the level measurement is performed.
3
Correction of geometry differences between gas density measurement and level measurement.