2 Name of Each Part
6
Reference gas line flow
Suction pressure control line
Calibration gas line
7
Secondary filter 1
Collects the sample gas dust passed through the primary filter.
8
Needle valve
Controls the sample gas flow.
9
Pump 1
A pump of 2-line type.
Performs sample gas suction, compression into analyzer and bypass line
discharge.
10
Electric cooler (Main cooler)
Cools the sample gas cooled in pre-cooler down to 5ºC to allow drain
separation. The separated drain is collected into the drain trap.
11
Solenoid valve (SV-7)
Blocks the sample gas line when the calibration gas is introduced.
12
Flowmeter
Monitors the sample gas flow.
The flow is adjusted to 0.6 L/min ±0.1 L/min by the needle valve (8).
13
Buffer tank
Prevents the pulsation interference caused by pumps in overflow line.
14
Solenoid valve (SV-8)
(air zero calibration spec)
Opens at air zero calibration.
15
Solenoid valve (SV-1A)
A solenoid valve for NIDR flow modulation.
Turns ON or OFF by 1 Hz.
16
Analyzer 1
Maximum 4 components of NDIR analyzers can be incorporated.
17
Capillary 1
A capillary to control NDIR flow.
18
Capillary 2
A capillary to control MPA sample flow.
19
Capillary 3
A capillary to control MPA carrier gas flow.
20
Analyzer 2
MPA is incorporated.
No.
Name
Description
21
Air filter
Collects dust in the air for reference gas.
22
Zero gas generator/Scrubber
A catalyst eliminating NOx, SO
2
, and CO from the reference gas.
“Zero gas generator” can be “Scrubber” depending on the specification.
23
Secondary filter 2
Collects the reference gas dust that passed through the air filter.
24
Electric cooler
Cools the reference gas down to 5ºC to allow drain separation.
The separated drain is collected to a drain trap.
25
Silica gel
Eliminates moisture in the MPA carrier gas.
26
Protection filter
Collects powders generated from silica gel.
No.
Name
Description
27
Regulator
Regulates the suction pressure of the sample gas and the reference gas to
-4.9 kPa.
28
Buffer tank
Restricts the suction pump pulsation.
29
Pump 2
Performs suction of the sample gas and the reference gas.
No.
Name
Description
30
Solenoid valve (SV-1 to SV-6) Solenoid valves for the calibration gas switch.
31
Pressure regulator
Depressurizes the pressure in calibration gas cylinder to approximately
68.6 kPa.
The needle valve for flow control is attached.
No.
Name Description
