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GETTING STARTED M102E/M501 TRS
(Addendum to M101E Manual - P/N 04740 Rev A)
3.4. Internal Pneumatic Flow of the M102E & the
M501-TRS
Figure 3-3 shows the internal pneumatic flow of the M102E in its Standard configuration. For
information on instruments in which one of the various zero/span valve options refer to Figures 5-
2 and 5-3.
2
3
1
SAMPLE GAS
INLET
SPAN GAS INLET
ZERO AIR INLET
VACUUM MANIFOLD
FLOW
CONTROL
ASSY
EXHAUST TO OUTE
R
LAYER OF KICKE
R
SAMPLE FILTER
M102E
INSTRUMENT
CHASSIS
EXHAUST GAS
OUTLET
KICKER EXHAUST
TO PUMP
HYDROCARBON
SCRUBBER
(KICKER)
UV
LAMP
PMT
SAMPLE
CHAMBER
FLOW
SENSOR
FLOW / PRESSURE
SENSOR PC
A
SAMPLE
PRESSURE
SENSOR
PUMP
TRS / SO
2
MODE
VALVE
Gas Flow in SO
2
phase
of multigas mode or
when in SO
2
measurement mode
TO
CONVERTER
FROM
CONVERTER
M501-TRS
SO
2
Scrubbe
r
CONVERTER OVEN
TRS
Æ
SO
2
TO
ANALYZER
FROM
ANALYZER
Figure 3-3: Internal Pneumatic Diagram of the M102E Standard Configuration.
Table 3-1: TRS – SO
2
Switching Valve Operating Modes
GAS
MODE
CONDITION OF TRS –SO
2
SWITCHING VALVE VALVE PORT
CONNECTION
(FIG. 5-2)
TRS
Open to SO
2
Scrubber and Molybdenum Converter
2 Æ 3
SO
2
Open to directly to Sample Chamber.
Bypasses M501-TRS
2 Æ 1
TRS –SO
2
Switches between above two states every 10 minutes.
- -
8 05514 Rev A1