Serinus 44 User Manual 3.0
Page 106
Procedure
1.
Open -
Main Menu
Calibration Menu.
2.
Note down the current value for
Conv. Efficiency NH3
.
3.
Edit -
Conv. Efficiency NH3
- (change to 100%) - Accept.
4.
Supply the instrument with a known concentration of NH
3
span gas at roughly 80% of the full-
scale monitoring range of the particular instrument. Label this value as [NH
3
]
SUPPLIED
.
5.
Allow the instrument to achieve a prolonged, stable measurement response and note down the
NH
3
reading as shown on the instrument. Label this measurement as [NH
3
]
MEASURED
.
6.
Use the noted measurements to calculate the converter efficiency using Equation 6.
7.
If the converter efficiency is 80% or greater, the converter is working well, return the converter
efficiency to the original value. Adjustments to the converter efficiency value should only be
made based on a multipoint check (refer to Section 5.8.2). If the converter efficiency is outside of
this range, the test has failed and a multipoint converter efficiency adjustment should be
performed.
5.8.2
Multipoint NH
3
Converter Efficiency Adjustment
A multipoint converter efficiency check is performed to determine the actual converter efficiency
across the range of the instrument. Thus allowing the user to calculate a new converter efficiency
value that can be adjusted in the instrument.
In the S44, the
Conv. Efficiency NH3
value displayed in the
Main Menu
Service Menu
Calculation Factors Menu
encompasses losses from the external converter, the in-line NH
3
scrubber
and the second NO
2
to NO converter coil.
Note:
For the following, the results for the NO and NO
2
and NO
X
channels can be ignored.
Equipment Required
Gas Dilution Calibrator (such as a Serinus Cal 1000/2000/3000).
NH
3
gas cylinder reference standard.
Zero Air Generator.
Procedure
1.
Open -
Main Menu
Calibration Menu.
2.
Note down the current value for
Conv. Efficiency NH3
.
3.
Edit -
Conv. Efficiency NH3
- (change to 100%) - Accept.
4.
Supply the instrument with zero air from your gas dilution calibrator.
5.
Allow the instrument to achieve a prolonged, stable measurement response and note down the
NH
3
value for reference only. If you get greater than 3 to 5 ppb you need to troubleshoot the
instrument and calibration system before continuing with this procedure.
6.
Supply the instrument with a known concentration of NH
3
span gas at roughly 80% of the full-
scale monitoring range of the particular instrument. Label this value as [NH
3
]
SUPPLIED
.
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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