YOKOGAWA IR800G, User Manual

Page: 15 / 127

IM 11G06A01-02EN
1-4
1. OVERVIEW
1st Edition : Oct. 27, 2023-00
l
When the sample gas contains a high level of moisture (more than 5°C
saturation)
If the comparison gas is instrument air or N
2
Reference gas
(Instrument air or N
2
)
Drain
(11)Flow-
meter
*1
(16)Primary pressure
regulator valve
(14)Reference
gas purifier
(10)Secondary
pressure
regulator valve
Exhaust
(atmospheric
pressure)
O
2
Analyzer
(17)Flowmeter
(1) Primary filter (3)Pump
(7) Solenoid
valve
(15)Bubbling
bottle
(9)Secondary
filter
Sample
gas
(4) Electric
dehumidifier
(5) Drain
pot
(6) Ball valve
(2) Safety drain
trap
(13) NO
2
/ NO
Converter
for NOx measurement
(8)Standard gas
for zero calibration
Standard gas
for span calibration
(7) (7) (7) Solenoid valve
Gas Analyzer
（ IR800 series ）
*2
(12) Mist catcher
(when SO
2
included)
R
R
R
*3
*1: In the electronic cooler, dehumidify the sample to 5°C or less to ensure that the moisture concentration on the sample side and
on the reference side is equivalent.
*2: NO
2
/NO converter is used for NOx measurement.
*3: The requirement of a reference gas purifier is determined by the concentration of the measured component in the reference gas.
If the concentration of the measured gas in the reference gas is less than 0.1% F.S. of the range, a reference gas purifier is not
required.
If the atmosphere is used as the reference gas and the range is less than or equal to the ranges below, the use of a reference
gas purifier is recommended.
NO meter: 0-100 ppm or less, SO
2
: or less, 0-50 ppm or less, CO: 0-1000 ppm or less
Please contact us for a reference gas purifier for each component
When CO
2
(Low range) is 0-0.1 vol% to 0-5 vol%, N
2
should be used as the reference gas (the atmosphere is not
acceptable).
Figure 1.3
Item Description Item Description
(1) Primary filter Removes dust and mist from sample
gas
(10) Pressure
reducing valve
Adjust the pressure to 5-10 kPa.
Fluctuation of ±2% relative to set
pressure
(2) Safety drain trap Separates and discharges drain (11) flow meter Monitors sample gas flow rate.
(3) Pump Sample gas suction (12) mist catcher Collects sulfuric acid mist in sample gas
(4) Electric
dehumidifier
Dehumidifies moisture in sample gas (13) NO
2
/NO
converter
Convert NO
2
to NO.
(5) Drain pot Stores dehumidified water from
electronic dehumidifier
(14) Reference gas
purifier
Removes interfering components in
comparison gases
(6) Ball valve Discharging from drain (15) Bubbling Bottle Humidifies comparative gas.
(7) Solenoid valve for switching sampling and calibration
lines
(16) Primary pressure
reducing valve
Set the pressure corresponding to the
inlet pressure of (10).
(8) Calibration
standard gas
Reference gas to calibrate zero and
span.
Used according to the measured
component.
Pressure corresponding to the inlet
pressure of (10)
(17) Flow meter
bypass line
Monitors and controls bypass line flow
(9) Secondary filter calibration lines