YOKOGAWA IR400 series, Руководство пользователя

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<3. INSTALLATION>
3-9
IM 11G02N01-01E
3.4.7 Example configuration of gas sampling system
The following illustrates a typical system configuration for five component gas measurement for
monitoring combustion exhaust gas from boiler, refuse incinerator, etc.
Contact Yokogawa for system configuration matching the particular use or further information.
(1) Probe
15
Drain
Exhaust
2-way
solenoid
valve
Air
ZERO NO SO
2
CO O
2
CO
2
NO
/N
2
SO
2
/N
2
CO
2
/N
2
CO
/N
2
O
2
/N
2
Infrared gas analyzer
main unit CO,CO
2
(O
2
)
IR400
or larger
(10)
Zirconia
O
2
sensor
Ø10/Ø8
Teflon
tube
(ZX8D*C
and
ZX8D*D)
(2) Mist filter
(3) Safety
drain
trap
(4) Pump
Electronic
gas cooler
(5)
(8) Flowmeter
(7) Membrane filter
(7) Membrane filter
(11)
NO
2
/NO
converter
(6)
Solenoid
valve
Pressure
reducing valve
(9) Standard gas
Infrared gas analyzer
main unit NO, SO
2
F3_4_7.ai
Name Description Name Description
(1) Probe Gas extractor with a heating type
stainless steel filter of standard
mesh 40 µm.
(8) Flowmeter Adjusts and monitors the flow rate
of sample gas.
(2) Mist filter Removes drain, mist, and dust. (9) Standard gas Reference gas used for calibrating
zero and span of the analyzer.
Total 6 cylinders required for zero
gas air, span gas NO, SO
2
, CO,
CO
2
and O
2
.
(3) Safety drain
trap
The safety drain trap divided
into two rooms for positive and
negative pressure. It monitors
and adjusts the sample gas
pressure.
(4) Pump For aspiration of sample gas (10) Zirconia O
2
sensor
External zirconia oxygen sensor
used for measuring the oxygen
concentration in sample gas.
(This is not necessary in case
when O
2
sensor is built-in.)
(5) Electronic gas
cooler
Dries the moisture in sample gas
to a dew point of approx. 2°C.
(6) Solenoid valve Used for introducing calibration gas.
(7) Membrane
filter
PTFE filter used to eliminate
fine dust particles and permit
monitoring of dust adhering
condition on the front panel of
the gas analyzer.
(11) NO
2
/ NO
converter
Added to NOx analyzer.
A special catalyst material for
efficient conversion of NO
2
gas to
NO is used.