Commissioning PR 5610 Installation Manual
72 Sartorius
4.5 Calibration, internal ADC
Calibration of the internal weighing point by weights or mV/V can be realized via keypad or terminal / PC.
Calibration data are protected by the CAL-switch, which has to be sealed in legal for trade applications.
Calibration data setting / changing is only possible, if the CAL-switch is open. If calibration is active, press
for a 10 fold magnifier (toggle).
If mV/V are entered based on the load cell data, it can be necessary, to correct the data depending on the local
gravitation (Data for STAR load cells are based on the gravitation in Hamburg: 9.81364).
4.5.1 Calibration sequence
The sequence is started with [Setup]-[Weighingpoints]-[WP X:Internal ADC]-[Calib]. 0. [Set Fullscale] is reached
with [New] or [Modify]. Changing to the next item is done with
(up to 4.5.12 [Exit calibration]) or with
in an endless loop up to the previous menu item of these chapters. The endless loop can be left with [Exit]:
without changes or, as described in chapter 4.5.12 after changes, in order to cancel the new settings or to save
it. In all display clips the default value is displayed.
4.5.2 Error messages at calibration start
When calling up [Calib], the following messages can appear:
If CAL-switch is closed.
If the instrument has been tared. Message:
If the instrument is connected to terminal
/ PC.
4.5.3 Calibration / Configuration counters
In menu [Setup]-[Weighingpoints]-[WP X:Internal ADC]-[Calib]-[Check] two 5 digit counters (max. 65000)
exist:
Counters for NTEP
At saving calibration the data of the internal ADC are compared. If span (in mV/V) is changed, the calibration
counter is incremented. If any other parameter is changed (including FSD, deadload, stepwidth, measuretime,
standstill etc.), the configuration counter is incremented. Both counters are saved together with the calibration
data.
The purpose is to trace (NTEP requirement) whether calibration and/or configuration data have been changed.
The counters are always present (independent of the selected [W
&M] mode) and cannot be reset or modified.
The counters can be displayed with CAL-switch closed and with tare active.
[Erase] or flashing of BIOS or flashing of firmware does not affect the counters.