ABB ACF5000 Manual page 26

26
Oxygen sensor
Zero gas:
Quality
Inlet pressure
Flow rate
Span gas:
Quality
Inlet pressure
Flow rate
Instrument air
Quality
Inlet pressure
Flow rate
NOTICE
Compressed air for back-purging
Quality
Inlet pressure
Flow rate
NOTICE
Definition
ACF5000 FTIR ANALYZER SYSTEM
3 vol.% O in N (accuracy ±2%)
2 2
p = 1500 ± 100 hPa (1.5 ± 0.1 bar)
e
max. 500 l/h
Clean compressed air (20.96 vol.% O
p = 1500 ± 100 hPa (1.5 ± 0.1 bar)
e
max. 500 l/h
On the basis of ISO 8573-1:2001 class 2 (max. particle size 1 to 5 µm, max.
10 particles/m 3 , max. oil content 0.1 mg/m
−40°C)
p = 5500 to 7000 hPa (5.5 to 7.0 bar)
e
In normal mode 3000 to 3800 l/h, during adjustment briefly up to 5000 l/h
Install a pressure controller and a shut-off fitting in the instrument air feed
as close as possible to the installation site of the analyzer cabinet.
Instrument air
max. 6 bar for back-purging,
approx. 4 bar as control air (needed for 2-stage back-purging with Type PFE2
filter unit and with FID)
approx. 1600 l/min (duration of the back-purging procedure approx.
45 seconds, see page 159)
Compressed air is needed to clean the sampling filter and the probe tube as
well as for controlling the control valves.
p = p − p with p = gauge pressure, p
e abs amb e
atmospheric pressure
| OI/ACF5000-EN REV. A
) from the air purifier
2
3 , max. vapor pressure dew point
= absolute pressure, p
abs
=
amb