Thermo Scientific 49iQ, Instruction Manual

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Calibration
Internal Ozonator Adjustment
4-14 49iQ Instruction Manual Thermo Scientific
The internal ozonator has been designed to satisfy the current EPA
regulations on biweekly precision and span checks. Before this option can
be used for precision or span checks, it must be certified as a transfer
standard. For detailed information on qualification and certification of an
ozone generating transfer standard, refer to the EPA Technical Assistance
Document on Transfer Standards.
For more information about the internal ozonator, see the “ Optional
Equipment ” chapter.
Use the following chapter to adjust the internal ozonator.
1. Connect a transfer standard or primary standard to the ozone OUT
bulkhead fitting of the instrument (see
Figure 4–3 ).
The transfer standard or primary sample will be used to read the O
3
generated by the internal ozonator.
Figure 4–3. Ozonator Flow Scheme
2. From the Home Screen, press Calibration> Custom O
3
Levels .
3. Adjust Level 1 for the desired level (typically 80% URL).
Internal Ozonator
Adjustment