Table of Contents
Advertisement
3.4.5 Pressure at sample gas outlet
Pressure at the sample gas outlet should be adjusted to the atmospheric pressure.
3.4.6 Example confi guration of gas sampling system
The following illustrates a typical system confi guration for 5 component gas measurement for
monitoring combustion exhaust gas from boiler, refuse incinerator, etc.
Contact Fuji Electric for system confi guration matching the particular use or further information.
(1) Gas extractor
ø10/ø8
Teflon
tube
(3) Safety
drain
trap
Drain
Name
(1) Gas extractor
(2) Mist fi lter
(3) Safety drain trap
(4) Gas aspirator
(5) Electronic gas
cooler
(6) Solenoid valve
(7) Membrane fi lter
INZ-TN2ZPA-E
(4) Gas aspirator
(2) Mist filter
Description
Gas extractor with a heating
type stainless steel fi lter of
standard mesh 40μm
Removes drain, mist, and dust.
The safety drain trap is divided
into two spaces for positive and
negative pressure. It moni-
tors and adjusts the sample gas
pressure.
For aspiration of the sample gas (10) Zirconia O
Dries the moisture in the
sample gas to a dew point of
approx. 2˚C.
Used for fl owing the standard
gas.
PTFE fi lter used to eliminate
fi ne dust particles.
(11) NO
2-way
(8) Flowmeter
solenoid
valve
(5)
Electronic
gas cooler
ZERO NO
SO
NO
SO
Air
/N
/N
2
Name
(8) Flowmeter
(9) Standard gas
2
analyzer
(11) NO
/NO con-
2
verter
11
ZPA unit
/NO
2
(7) Membrane
converter
filter
Infrared gas
analyzer
main frame (O
)
2
(6)
CO
CO
O
Solenoid
2
2
2
valve
Pressure
reducing valve
(10)
Zirconia
O
2
CO
CO
O
2
2
2
analyzer
/N
/N
/N
2
2
2
2
(ZFK7)
(9) Standard gas
Exhaust
Description
Adjusts and monitors the fl ow
rate of the sample gas and
standard gas for calibration.
Standard gas used for cali-
brating zero and span of the
analyzer, depending on the
measured component.
External zirconia oxygen
sensor used for measuring
the oxygen concentration in
sample gas.
(This is not necessary in case
when O
sensor is built-in.)
2
Added to NOx analyzer.
A special catalyst material for
effi cient conversion of NO
gas to NO is used.
2
Advertisement
Table of Contents
