Примеры использования Sample filter на Английском языке и их переводы на Русский язык
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Ρmedia density of PM sample filter.
Mcor PM sample filter mass corrected for buoyancy.
It is recommended to neutralize PM sample filter to within +-2.0 V of neutral.
PM sample filter shall be corrected for their buoyancy in air.
Spanner and spare filter elements for those analysers configured with a sample filter.
Different PM sample filter have different densities.
Before an emission test, the following steps shall be taken to prepare PM sample filter media and equipment for PM measurements.
Muncor PM sample filter mass uncorrected for buoyancy.
At least two unused reference filters shall be weighed within 12 hours of, butpreferably at the same time as the sample filter weighing.
A sample filter to protect the gas sensor modules from particulate contamination.
The buoyancy correction depends on the density of the sample filter medium, the density of air, and the density of the calibration weight used to calibrate the balance.
Ii For correcting for background PM without HEPA filtration,the background PM shall not contribute more than 50 per cent of the net PM collected on the sample filter;
The PM sample filter shall be corrected for buoyancy using the following equations.
In case less than half of the reference filters meet the+- 5 μg criterion, the sample filter shall be discarded, and the emissions test repeated.
PM sample filter shall be located within 75 cm downstream of the pre-classifier's exit.
If, prior to or at the 80 hour point, more than half the number of reference filters meetthe +-5 μg criterion, then the sample filter weighing can be considered valid.
Mainly be used for sample filter, take out particulars, liquid and gas sterile filtration.
The particulate sampling system requires dilution of the exhaust to a temperature of X °C,measured upstream of a single high efficiency sample filter as close to the filter as practical.
If the average weight of the reference filters changes between sample filter weightings by more than 10 ug, all sample filters shall be discarded and the emissions test repeated.
To determine the specific reference filter weights, at least two unused reference filters shall be weighed within 8 hours of, butpreferably at the same time as, the sample filter weighings.
The pre-classifier outlet shall be configured with a means of bypassing any PM sample filter so that the pre-classifier flow can be stabilized before starting a test.
If the weight of any of the reference filters changes between sample filter weighings by more than 10 ug or +-10 per cent of the expected total PM mass, whichever is higher, all sample filters shall be discarded and the emissions test repeated.
Twin particulate filters, one for the urban, one for the extra-urban phase, may be used without back-up filters, only where the pressure-drop increase across the sample filter between the beginning and the end of the emissions test is otherwise expected to exceed 25 kPa.
If the weight of any of the reference filters changes between sample filter weighings by more than 10 ug, all sample filters shall be discarded and the emissions test repeated.
In all other cases, reference filters shall be replaced at least every 30 days and in such a manner that no sample filter is weighed without comparison to a reference filter that has been present in the weighing room for at least 1 day.
If, at the 80 h point, two reference filters are employed andone filter fails the +-5 ug criterion, the sample filter weighing can be considered valid under the condition that the sum of the absolute differences between specific and rolling averages from the two reference filters shall be less than or equal to 10 ug.
In all other cases, reference filters must be replaced at least every 30 days and in such a manner that no sample filter is weighed without comparison to a reference filter that has been present in the weighing room for at least one day.
If, at the 80 hour point, two reference filters are employed andone filter fails the +-5 μg criterion, the sample filter weighing can be considered valid under the condition that the sum of the absolute differences between specific and rolling averages from the two reference filters must be less than or equal to 10 μg.
If the average weight of the reference filters changes between sample filter weighings by more than 10 µg, all sample filters shall be discarded and the emissions test repeated.
If the specific weight of any reference filter changes by more than+-5ug between sample filter weighings, then the sample filter and reference filters shall be reconditioned in the weighing room and then reweighed.