Ecotech Serinus 51 - 4 Calibration; 4.1 Zero Calibration; 4.2 Span Calibration

Serinus 51 User manual 1.0 Calibration
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4 Calibration
4.1 Zero Calibration
Zero calibrations are used to set the zero point of the analyzer.
Note: This calibration is unnecessary in most situations and
should only be performed if required. Ecotech recommends that
zero calibration not be used unless specifically required.
Performing a zero calibration can be performed through either the Calibration port or
Sample port. Follow the relevant instructions below:
Calibration port
1. Ensure suitable zero air source is connected to the “Calibration port” on the
back panel of analyzer (see section 2.3.1)
2. Enter the Main Menu  Calibration Menu  Calibration Mode
3. Select the Calibration mode to be zero
4. Allow the instrument to stabilize (15 minutes)
5. Enter the Quick Menu and select “Zero Calibration”
6. A box will appear with editable numbers, select 0.00
7. Instrument will perform Zero calibration, when finished the instrument will
return to normal activities
Sample port
1. Ensure suitable zero air source is connected to the “sample port” on the back
panel of analyzer (see section 2.3.1)
2. Let the instrument stabilize
3. Enter the quick menu and select “Zero Calibration”
4. A box will appear with editable numbers, select 0.00
5. Instrument will perform Zero calibration, when finished the instrument will
return to normal activities
4.2 Span Calibration
Performing a span calibration can be performed through either the Calibration port or
Sample port. Span calibrations calibrate the instrument to the upper limits of normal
monitoring. Ecotech recommends that 80% of full scale should be sufficient for
calibrations in ambient monitoring situations 100 ppb. Follow the relevant
instructions below:
Calibration port
1. Ensure suitable span gas (SO
2
) source is connected to the “Calibration Port”
on the back panel of analyzer (see section 2.3.1)
2. Enter Main Menu  Measurement Settings menu  Gas to Measure and set
this field to SO
2
3. Set the span source to a known concentration (80% full scale recommended)
4. Enter the Main menu  Calibration menu  Calibration mode
5. Select the Calibration mode to be span
6. Let the instrument stabilize (15 minutes)