Thermo Scientific G100 Series, Руководство по эксплуатации

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Calibration
Last Field Calibration
7-4
G100 Range CO
2
Analyser Thermo Scientific
4. The instrument will then indicate a successful zero has been completed. Press the soft-key
‘Accept’ to confirm the calibration and ‘Store’ the new user offset.
Alternatively, soft-key ‘Reject’ to exit without change.
Span CO
2
Channel:
It is recommended that the instrument is spanned to target the desired reading range (e.g. 5%);
ideally this should not be a low level close to zero.
1. If not already preset, enter the span target , i.e. certified concentration of your calibration gas.
Press ‘Key 1’ and enter the new value. Then attach the gas and open regulator valve to allow the
gas to flow.
2. Press the ‘Start’ key and wait for the reading to stabilise. This can take a couple of minutes. Press
the ‘Pump’ key to draw sample gas.
3. Once a stable reading is shown press the soft-key ‘Accept’. A successful span calibration message
will then be displayed. Press the soft-key ‘Accept’ again to confirm the calibration and ‘Store’ the
new user span. Alternatively, press soft-key ‘Reject’ to exit without change.
Reset Factory Settings
This option will reset the instrument to its factory programmed calibration characteristics and will
clear the user calibration points for both gas channels.
1. To reset to factory settings, press ‘Key 1 - Factory Reset’ from the ‘Calibration’ menu.
2. To prevent the user calibration data being accidentally erased the user must confirm the action
by pressing the soft-key ‘Accept’, or soft-key ‘Reject’ to exit without change.
Last Field Calibration
This data can be found in the ‘Information’ screen accessed via the ‘Utilities’ menu. This option
displays the date that the last field calibration was performed on the instrument.
Note If the calibration failed then purge and try again or select a different air source.
Note
If using G110 – very high concentrations of CO
2
may take up to 30 minutes to
purge completely.
Note
If the calibration failed then try again using a longer purge time or different target
gas.
User Calibration - Reset