ABB ACF-NT Operator's Manual page 32

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