ABB ACF-NT, Operator'S Manual

Page: 32 / 42

32 Operator’s Manual ACF-NT, ACF-NT V0309 42/23-572 EN Rev. 5
Calibration,
continued
O
2
Analyzer
Calibration
The O
2
analyzer is automatically adjusted at the officially established maintenance
interval (once per month). O
2
analyzer zero and span calibration is described in
detail in the “Oxygen Analyzer Calibration” section (see page 36).
Zero Gas:
1 to 4 Vol% O
2
in N
2
Supplied at test gas port Test Gases for O
2
Analyzer Calibration
Span Gas: Clean air from the air purifier Permanently connected to system
VOC Analyzer
Calibration The VOC analyzer is automatically adjusted at the officially established mainte-
nance interval (every 14 days). The VOC analyzer zero and span calibration is
described in detail in the “VOC Analyzer Calibration” section (see page 37).
Zero Gas:
N
2
or oxygen zero gas Supplied at “Zero Gas FID” port Test Gases for VOC
Analyzer Calibration
Span Gas: n-Propane C
3
H
8
in N
2
(70 to 80 % of measuring range)
Supplied at “Span Gas FID” port