Ecotech Acoem Serinus 30, User Manual

Page: 127 / 225

Calibration Page 127
2. Open - Main Menu
→
Calibration Menu .
3. Select - Cal. Type
→
Manual - Accept.
4. Select - Cal. Mode
→
Measure - Accept.
5. Select - Zero Source
→
External - Accept.
6. Allow the instrument time to achieve a stable response.
7. Enter - Zero Calibrate CO - (read note) - OK.
8. Disconnect the zero air source and reconnect the sample line to the Sample Port .
5.4.3 Background Air Port
Equipment Required
•
N/A
Procedure
1. Open - Main Menu
→
Calibration Menu .
2. Select - Cal. Type
→
Manual - Accept.
3. Select - Cal. Mode
→
Zero - Accept.
4. Select - Zero Source
→
Internal - Accept.
5. Allow the instrument time to achieve a stable response.
6. Enter - Zero Calibrate CO - (read note) - OK.
7. Select - Cal. Mode
→
Measure - Accept (To return to sample measure).
5.5 Span Calibration
A span calibration is a calibration performed at the upper end of the instrument ’s measurement range.
Ecotech recommends calibration at 80% of the full scale measurement or operating range of the
instrument.
While the instrument range is commonly set as a default 0 - 50 ppm, this is widely recognised as no
longer being valid with modern digital communication and most regulators will now recommend a
range more suited to local conditions.
A span gas can be supplied through either the Calibration Port or Sample Port . Refer to the instructions
outlined in the next two sections.
Note: Ensure that the instrument has been running for at least one hour before any calibration is
performed to ensure sufficient stability.