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3.4.4 Purging of instrument inside
.
3.4.5 Pressure at sampling gas outlet and reference gas outlet
Air for H
S purge
2
(2) Gas
(1) Mist filter
Sample gas inlet
(3) Drain pot
(4) Ball value
(4) Ball value
Drain
(5)
INZ-TN2ZPAF-E
(2) Gas aspirator
(5)
aspirator
for zero calibration
(5) solenoid
valve
(5)
(9)
Demister
(6) Standard gas for
span calibration
gas.
gas.
(8) Membrane
(7) Flowmeter
filter
(5)
(5)
(5) solenoid
valve
(10)
9
Gas analyzer
(ZPAF)
Air
(H
S purge)
2
H
S Inlet
Exhaust
2
(atmospheric
pressure)
Inlet
(NDIR, O
)
2
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