Glossary entry (derived from question below)
Feb 8, 2014 12:29
10 yrs ago
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English term
blank (gas)
English to Polish
Tech/Engineering
Mechanics / Mech Engineering
analizator gazów
PSA S665S200 Stream Selection Unit User Manual
The PSA S665S200 Stream Selection Unit range is utilised when numerous sample streams need to be monitored. The unit consists of an appropriate number of 3-way Teflon switching valves for the number of sample streams to be monitored.
In some configurations, the system can also be used to deliver blank and calibration gas to a desired location to perform system bias testing.
In standby mode all sample streams flow to waste and the valves are non-energised. (In natural gas applications the wastes are capped and there is no sample flow in standby.) Valves are activated using the TTL lines from the PSA 10.525 Sir Galahad. When a stream has been selected the corresponding valve is energised using 12V dc. Once energised the valve is kept open using a holding voltage of approximately 4.5 V dc. The valve will be activated for the entire analytical cycle. Switching the valve will direct the sample flow through the manifold out to the Sir Galahad collection tube and, in stack gas type stream selection units, to the excess flow port.
Calibration Gas Inlets: Blank in corresponds to the blank gas from the Cavkit. Calibration Gas in should be connected to the high span gas from the Cavkit.
Calibration Gas Outlets: These should be connected to appropriate points in the sampling stream(s). Blank and high span are selected using the internal valve arrangement.
Table 8 S665S200/P310 Channel Allocation
Channel Valves Selected Valve No.
Function Cal Gas Sample
1 --- Hg0 1 SAMPLE
2 --- HgT 2 SAMPLE
3 Blank --- 9 None
4 Span --- 10 None
5 Blank Hg0 1+9 Hg0 blank check
6 Span Hg0 1+10 Hg0 span check
7 Blank HgT 2+9 HgT blank check
8 Span HgT 2+10 HgT span check others --- --- Closedown etc
S665S200/P200: Two x two sample streams, two cal. gas delivery streams
This unit is normally used for selecting between Hg0 and Hgtotal from two different sampling locations (e.g. inlet and outlet of a control device). Four additional valves are used to supply blank and high span to the two sampling locations.
S665S200/P710: Two sample streams, two cal. gas delivery streams
This unit is normally used for selecting between two streams (e.g. Hg0 and Hgtotal) from one sampling location and to supply blank and high span to two different locations in the sampling stream (e.g. to the probe and to the local sample conditioning system).
S665S200/P320 + E100: two x two sample streams, three cal gas delivery streams
This unit is normally used for selecting between Hg0 and Hgtotal from two different sampling locations (e.g. inlet and outlet of a control device). Three additional pairs of valves are used to supply blank and high span to each sampling location and a local calibration channel.
The PSA S665S200 Stream Selection Unit range is utilised when numerous sample streams need to be monitored. The unit consists of an appropriate number of 3-way Teflon switching valves for the number of sample streams to be monitored.
In some configurations, the system can also be used to deliver blank and calibration gas to a desired location to perform system bias testing.
In standby mode all sample streams flow to waste and the valves are non-energised. (In natural gas applications the wastes are capped and there is no sample flow in standby.) Valves are activated using the TTL lines from the PSA 10.525 Sir Galahad. When a stream has been selected the corresponding valve is energised using 12V dc. Once energised the valve is kept open using a holding voltage of approximately 4.5 V dc. The valve will be activated for the entire analytical cycle. Switching the valve will direct the sample flow through the manifold out to the Sir Galahad collection tube and, in stack gas type stream selection units, to the excess flow port.
Calibration Gas Inlets: Blank in corresponds to the blank gas from the Cavkit. Calibration Gas in should be connected to the high span gas from the Cavkit.
Calibration Gas Outlets: These should be connected to appropriate points in the sampling stream(s). Blank and high span are selected using the internal valve arrangement.
Table 8 S665S200/P310 Channel Allocation
Channel Valves Selected Valve No.
Function Cal Gas Sample
1 --- Hg0 1 SAMPLE
2 --- HgT 2 SAMPLE
3 Blank --- 9 None
4 Span --- 10 None
5 Blank Hg0 1+9 Hg0 blank check
6 Span Hg0 1+10 Hg0 span check
7 Blank HgT 2+9 HgT blank check
8 Span HgT 2+10 HgT span check others --- --- Closedown etc
S665S200/P200: Two x two sample streams, two cal. gas delivery streams
This unit is normally used for selecting between Hg0 and Hgtotal from two different sampling locations (e.g. inlet and outlet of a control device). Four additional valves are used to supply blank and high span to the two sampling locations.
S665S200/P710: Two sample streams, two cal. gas delivery streams
This unit is normally used for selecting between two streams (e.g. Hg0 and Hgtotal) from one sampling location and to supply blank and high span to two different locations in the sampling stream (e.g. to the probe and to the local sample conditioning system).
S665S200/P320 + E100: two x two sample streams, three cal gas delivery streams
This unit is normally used for selecting between Hg0 and Hgtotal from two different sampling locations (e.g. inlet and outlet of a control device). Three additional pairs of valves are used to supply blank and high span to each sampling location and a local calibration channel.
Proposed translations
(Polish)
| 3 | gaz obojętny |
geopiet
|
Proposed translations
1 day 22 hrs
Selected
gaz obojętny
Generally, the zero point of an instrument is first set using a blank gas (e.g. nitrogen), or the response registered for subsequent computational correction.
Then the calibration gas is introduced and the pitch of the calibration function is adjusted, or the response is registered for subsequent computational correction - http://www.coprocem.org/documents/emr-guidelines-disc.pdf - page 36
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use a blank gas of very pure nitrogen or air (preferably no VOC concentrations above 20 ppt) – check for memory effects; - http://goo.gl/J1rWHk - page 18
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Gaz obojętny – gaz, który jest obojętny chemicznie i w warunkach danej reakcji chemicznej nie uczestniczy w jej przebiegu. Zwykle do gazów obojętnych zalicza się azot, dwutlenek węgla i gazy szlachetne. - http://pl.wikipedia.org/wiki/Gaz_obojętny
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Then the calibration gas is introduced and the pitch of the calibration function is adjusted, or the response is registered for subsequent computational correction - http://www.coprocem.org/documents/emr-guidelines-disc.pdf - page 36
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use a blank gas of very pure nitrogen or air (preferably no VOC concentrations above 20 ppt) – check for memory effects; - http://goo.gl/J1rWHk - page 18
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Gaz obojętny – gaz, który jest obojętny chemicznie i w warunkach danej reakcji chemicznej nie uczestniczy w jej przebiegu. Zwykle do gazów obojętnych zalicza się azot, dwutlenek węgla i gazy szlachetne. - http://pl.wikipedia.org/wiki/Gaz_obojętny
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4 KudoZ points awarded for this answer.
Comment: "dzięki"
Discussion
1) analizator - przyrząd pomiarowy przeznaczony do pomiaru zawartości jednego lub więcej z następujących składników gazowych:
a) tlenku węgla (CO),
b) dwutlenku węgla (CO2),
c) węglowodorów (HC w przeliczeniu na n-heksan),
d) tlenu (O2)
w spalinach pojazdów z silnikami o zapłonie iskrowym;
2) sonda poboru spalin - rurkę wprowadzaną do rury wydechowej pojazdu, służącą do pobierania próbek spalin;
3) separator wody - urządzenie do usuwania nadmiaru wody z próbek spalin pobieranych przez sondę poboru spalin;
4) układ przetłaczania gazów - część pneumatyczną analizatora, przez którą są przepompowywane spaliny;
5) gaz wzorcowy - stabilną mieszaninę gazów o określonej zawartości poszczególnych składników w azocie, służącą do wzorcowania lub sprawdzania wskazań analizatorów;
6) gaz zerowy - czysty gaz obojętny lub mieszaninę gazów, niezawierającą składników gazowych będących przedmiotem pomiarów;
http://www.nettax.pl/dzienniki/du/2004/7/poz.58.htm
The zero calibration is performed with a gas that contains none of the analyte gas to which the analyzer responds.
For example, pure nitrogen is perfect for zeroing either oxygen or carbon dioxide analyzers, because it contains neither oxygen nor carbon dioxide. Run a steady stream of nitrogen through the analyzer at a low, steady flow rate - typically about 100 ml/min - and adjust the zero control of the analyzer so that the analyzer's display reads zero. Zero calibration gases are therefore, as Steve Jobs would say, a no-brainer. And you can usually pick up very pure nitrogen from local gas suppliers for very little cost.
The span calibration is not as simple. A span gas has a precisely defined concentration of the analyte gas to which the analyzer responds. - http://www.proz.com/kudoz/1084602