Connections with internal valve options installed, Instrument chassis – Teledyne 9110TH - Nitrogen Oxides Analyzer User Manual
Page 51

Getting Started
Model 9110TH NOx Analyzer
Teledyne Analytical Instruments
31
3.5.3. CONNECTIONS WITH INTERNAL VALVE OPTIONS INSTALLED
If your analyzer is equipped with either the zero/span valve option (50A) or the 2-span
point valve option (50D), the pneumatic connections should be made as shown in Figure
3-17 and Figure 3-18:
VENT
here if input
is pressurized
Source of
SAMPLE Gas
PUMP
Instrument
Chassis
Sample
Exhaust
Span Point
Zero Air
Calibr
ated N
O
at
HI
GH
Spa
n
Co
ncentratio
n
MODEL T700
Gas Dilution
Calibrator
MODEL 701
Zero Gas
Generator
Figure 3-17:
Pneumatic Connections–With Zero/Span Valve Option (50A)
VENT
here if input
is pressurized
Source of
SAMPLE Gas
PUMP
VENT
Instrument
Chassis
Sample
Exhaust
High Span Point
Low Span Point
Zero Air
Cal
ib
ra
ted N
O
at
HIGH
Sp
an
Co
nc
entra
tio
n
C
alib
rat
ed N
O
at
LOW
Sp
an
Conc
en
tr
at
ion
VENT
On/Off
Valves
Figure 3-18:
Pneumatic Connections–With 2-Span Point Option (50D) –Using Bottled Span Gas
Once the appropriate pneumatic connections have been made, check all pneumatic
fittings for leaks using the procedures defined in Section 7.5.
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