Inficon Contura S400, Translation Of The Original Operating Instructions

Page: 30 / 68

6 | Operation INFICON
30 / 68 Contura® S400-Operating-instructions-jina91en1-09-(2001)
6.2.10 Change settings for ZERO
To compensate for external influences such as air pressure or temperature on the
measurement, carry out ZERO measurements regularly when the measuring chamber
is empty. This helps to maintain accuracy of measurements. When certain conditions
occur, you will be prompted to perform ZERO measurements, see also “Perform
ZERO measurement [
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31]”.
You can deviate from the factory settings and change the frequency of prompts for
ZERO measurement. You can also set whether you can ignore ZERO prompts and
continue measurements.
ü Supervisor - rights
1 > ZERO
2 To set that ZERO prompts must be followed, enable the “ZERO - Mandatory”
option.
ð
If this option is activated, it is not possible to continue measurements without
a previous ZERO measurement when prompted to take a ZERO
measurement.
ð
To set ZERO prompts to be ignored, deselect the "ZERO - Mandatory” option.
3 To prevent a filled measuring chamber from being evaluated as a supposed
ZERO measurement when the hood is closed when a ZERO prompt is active,
activate the “ZERO autostart disabled” option.
ð This prevents the automatic measurement start when the hood is closed.
4 Under “ZERO time interval” you have the option of setting how many minutes
after the last ZERO measurement the prompt for the next ZERO measurement
should be issued or whether it should be switched off.
5
Under “ZERO measurement interval” you have the possibility to set after how
many measurements after the last ZERO measurement the request for the next
ZERO measurement should be made or whether it should be switched off.
ð
After a ZERO measurement, the counter for both “ZERO time interval” and
“ZERO measurement interval” is reset to "0".