Serinus 44 User Manual 3.0
Page 102
The NO
2
converter efficiency value displayed in the
Main Menu
Service Menu
Calculation
Factors menu
only applies to the NO
X
path converter coil, the efficiency of the second coil for the N
X
channel is encompassed in the NH
3
converter efficiency value.
The following procedures describe the process for testing the efficiency for both converter coils and
adjusting the NO2 converter efficiency for the NO
X
channel coil.
Required Equipment
Gas Dilution Calibrator which can perform a Gas Phase Titration (GPT) (such as a Serinus Cal
2000/3000) with ozone.
A NO gas cylinder reference standard
Zero Air Generator
Loop of tube (to bypass external converter)
To measure and correct converter efficiency the following equation is used:
𝐸𝐹𝐹
𝐶𝑜𝑛𝑣𝑒𝑟𝑠𝑖𝑜𝑛
=
∆[𝑁𝑂
2
]
∆[𝑁𝑂]
× 100 =
[𝑁𝑂
2
]
𝐹𝐼𝑁𝐴𝐿
− [𝑁𝑂
2
]
𝑂𝑅𝐼𝐺
[𝑁𝑂]
𝑂𝑅𝐼𝐺
− [𝑁𝑂]
𝐹𝐼𝑁𝐴𝐿
× 100
Equation 4 – Calculation for NO
2
Converter Efficiency of the NO
X
path
[𝑁𝑂
2
]
𝑂𝑅𝐼𝐺
= NO
2
measurement obtained by running a stable concentration of NO span gas through
the instrument.
[𝑁𝑂]
𝑂𝑅𝐼𝐺
= NO measurement obtained by running a stable concentration of NO span gas through
the instrument.
[𝑁𝑂]
𝐹𝐼𝑁𝐴𝐿
= NO measurement obtained by running a stable concentration of NO
2
span gas (as
generated by reacting O
3
with NO in a GPT calibrator) through the instrument.
[𝑁𝑂
2
]
𝐹𝐼𝑁𝐴𝐿
= NO
2
measurement obtained by running a stable concentration of NO
2
span gas (as
generated by reacting O
3
with NO in a GPT calibrator) through the instrument.
To assess the converter efficiency for the N
X
coil the following equation is used:
𝐸𝐹𝐹
𝐶𝑜𝑛𝑣𝑒𝑟𝑠𝑖𝑜𝑛
=
∆[𝑁𝑥 − 𝑁𝑂]
∆[𝑁𝑂]
× 100 =
[𝑁𝑥 − 𝑁𝑂]
𝐹𝐼𝑁𝐴𝐿
− [𝑁𝑥 − 𝑁𝑂]
𝑂𝑅𝐼𝐺
[𝑁𝑂]
𝑂𝑅𝐼𝐺
− [𝑁𝑂]
𝐹𝐼𝑁𝐴𝐿
× 100
Equation 5 – Calculation for NO2 Converter Efficiency of the NX path
[𝑁𝑥 − 𝑁𝑂]
𝑂𝑅𝐼𝐺
= Calculation of the N
X
measurement minus the NO measurement, obtained by
running a stable concentration of NO span gas through the instrument.
[𝑁𝑂]
𝑂𝑅𝐼𝐺
= NO measurement obtained by running a stable concentration of NO span gas through
the instrument.
[𝑁𝑥 − 𝑁𝑂]
𝐹𝐼𝑁𝐴𝐿
= Calculation of N
X
measurement minus the NO measurement, obtained by running
a stable concentration of NO
2
span gas (as generated by reacting O
3
with NO in a GPT calibrator)
through the instrument.
[𝑁𝑂]
𝐹𝐼𝑁𝐴𝐿
= NO measurement obtained by running a stable concentration of NO
2
span gas (as
generated by reacting O
3
with NO in a GPT calibrator) through the instrument.
Summary of Contents for Serinus 44
Page 1: ...Serinus 44 Ammonia Oxides of Nitrogen Analyser User Manual Version 3 0 www ecotech com...
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Page 137: ...Troubleshooting Page 137 7 6 USB Memory Stick Failure Figure 71 USB Memory Stick Failure...
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Page 150: ...Serinus 44 User Manual 3 0 Page 150 9 5 Plumbing Schematic D020018...
Page 151: ...Parts List and Schematics Page 151 9 6 Block Wiring Schematic D020104...
Page 152: ...Serinus 44 User Manual 3 0 Page 152 9 7 Ozone Generator Assembly H011107...
Page 153: ...Parts List and Schematics Page 153 9 8 Optical Bench Assembly H011200...
Page 154: ...Serinus 44 User Manual 3 0 Page 154 9 9 Manifold Block Assembly H011302...
Page 155: ...Parts List and Schematics Page 155 9 10 Calibration Manifold Assembly H010013 01...
Page 156: ...Serinus 44 User Manual 3 0 Page 156 9 11 Valve Assembly H010042...
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