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M300EU Optional Hardware and Software
(Addendum to M300EU Manual - P/N 04145)
5.1.2. ZERO SPAN VALVES WITH IZS (OPT 51B)
Because of the addition of the auto-reference gas path and the multi-tube Nafion
®
dryer, the internal pneumatics
gas flow of the M300EU is somewhat different from the M300E/EM. Otherwise, the information found in Section
5.4.4 of the M300E/EM Operators Manual (P/N 04288) is applicable to the M300EU.
INSTRUMENT CHASSIS
SAMPLE
PRESSURE
SENSOR
FLOW
SENSOR
Sample Gas
Flow Control
Flow / Pressure
Sensor PCA
EXHAUST
GAS OUTLET
PUMP
SAMPLE
GAS INLET
IZS INLET
PRESSURE
SPAN INLET
Sample / Cal
Valve
Zero / Span
Valve
Ambient
Air In
Sample
Gas
In
Span
Gas
In
/
CO
Scrubber
Auto-
Reference
Valve
Multi-Tube Nafion
Dryer
SAMPLE CHAMBER
GFC Wheel
Housing
GFC Motor Heat Sync
Zero Air
Scrubber
3
2
1
Figure 5-2: M300EU Internal Pneumatic Flow– Zero/Span Valves with IZS (OPT 51B)
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