Caveats - Revision history

Bcmwiki: Wiki update: sync with manual and dev docs (2026-03)

2026-03-08T13:10:12Z

Wiki update: sync with manual and dev docs (2026-03)

← Older revision		Revision as of 13:10, 8 March 2026
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	* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled out by moving average of 6 or 12 values		#REDIRECT [[Best practices]]
	* Right now, only AE51 (Pallflex T60A20) and AE33 Filter are supported - we can easily support more filter typed by adding a filter specific scattering factor. Just let us know which one and send us a sample. Depending on the paper, the frequency to change the filter can vary a lot.
	* Control airflow on non-stabilized pumps is not convenient without airflow meter
	* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6-12 hours, in berlin city around 3-5 days. If the filter is used any further, accuracy will be suffering. Values will be flagged properly in .csv file.

Bcmwiki at 19:21, 6 October 2022

2022-10-06T19:21:53Z

← Older revision		Revision as of 19:21, 6 October 2022
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	* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled out by moving average of 6 or 12 values		* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled out by moving average of 6 or 12 values
	* Right now, only AE51 (Pallflex T60A20) and AE33 Filter are supported - we can easily support more filter typed by adding a ~~correction~~ factor. Just let us know which one and send us a sample. Depending on the paper, the frequency to change the filter can vary a lot.		* Right now, only AE51 (Pallflex T60A20) and AE33 Filter are supported - we can easily support more filter typed by adding a filter specific scattering factor. Just let us know which one and send us a sample. Depending on the paper, the frequency to change the filter can vary a lot.
	* Control airflow on non-stabilized pumps is not convenient without airflow meter		* Control airflow on non-stabilized pumps is not convenient without airflow meter
	* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6 hours, in berlin city around ~~18hours~~. If the filter is used any further, accuracy ~~may~~ be suffering. Values will be flagged properly in .csv file.		* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6-12 hours, in berlin city around 3-5 days. If the filter is used any further, accuracy will be suffering. Values will be flagged properly in .csv file.

Bcmwiki at 15:19, 15 March 2022

2022-03-15T15:19:18Z

← Older revision		Revision as of 15:19, 15 March 2022
Line 1:		Line 1:
	* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled out by moving average of 6 or 12 values		* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled out by moving average of 6 or 12 values
	* ~~We use~~ Pallflex T60A20 Filter - ~~Specific attenuation cross-section is '''highly''' dependent on~~ filter ~~paper type~~ and ~~age of BC to measure – we are going to build~~ a ~~database for correction factors~~ to ~~be used with common~~ filter ~~papers~~		* Right now, only AE51 (Pallflex T60A20) and AE33 Filter are supported - we can easily support more filter typed by adding a correction factor. Just let us know which one and send us a sample. Depending on the paper, the frequency to change the filter can vary a lot.
	* Control airflow on non-stabilized pumps is not convenient without airflow meter		* Control airflow on non-stabilized pumps is not convenient without airflow meter
	* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6 hours, in berlin city around 18hours. If the filter is used any further, accuracy may be suffering. Values will be flagged properly in .csv file.		* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6 hours, in berlin city around 18hours. If the filter is used any further, accuracy may be suffering. Values will be flagged properly in .csv file.

Bcmwiki at 21:18, 7 July 2021

2021-07-07T21:18:44Z

← Older revision		Revision as of 21:18, 7 July 2021
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	* We use Pallflex T60A20 Filter - Specific attenuation cross-section is '''highly''' dependent on filter paper type and age of BC to measure – we are going to build a database for correction factors to be used with common filter papers		* We use Pallflex T60A20 Filter - Specific attenuation cross-section is '''highly''' dependent on filter paper type and age of BC to measure – we are going to build a database for correction factors to be used with common filter papers
	* Control airflow on non-stabilized pumps is not convenient without airflow meter		* Control airflow on non-stabilized pumps is not convenient without airflow meter
	* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6 hours, in berlin city around 18hours. If the filter is used any further, accuracy may be suffering. Values will be flagged properly in .csv file.		* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6 hours, in berlin city around 18hours. If the filter is used any further, accuracy may be suffering. Values will be flagged properly in .csv file.
	*

Bcmwiki: Created page with "* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled..."

2021-07-07T21:18:13Z

Created page with "* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled..."

New page

* Place device in shadow: It is sensitive to very quick changes in humidity / lighting (e.g. scattered clouds on sunny day) – resulting in undesirable peaks which are ruled out by moving average of 6 or 12 values
* We use Pallflex T60A20 Filter - Specific attenuation cross-section is '''highly''' dependent on filter paper type and age of BC to measure – we are going to build a database for correction factors to be used with common filter papers
* Control airflow on non-stabilized pumps is not convenient without airflow meter
* The filter is saturated at approx 30% attenuation. This takes in heavily polluted areas around 6 hours, in berlin city around 18hours. If the filter is used any further, accuracy may be suffering. Values will be flagged properly in .csv file.
*