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A platform for research: civil engineering, architecture and urbanism
COLORIMETRIC INDICATOR RESPONSIVE TO AIR FLOW
Provided is an indicator device responsive to air flow that may signal the need to change an air filter after a prescribed amount of airflow has passed the air filter or clogging of the air filter has occurred. The indicator device may be mounted on the outer surface of the filter where visible for inspection. After a prescribed amount of airflow has passed the air filter or clogging of the air filter has occurred, the indicator device may change color, thereby alerting the user of the need to replace the air filter.
COLORIMETRIC INDICATOR RESPONSIVE TO AIR FLOW
Provided is an indicator device responsive to air flow that may signal the need to change an air filter after a prescribed amount of airflow has passed the air filter or clogging of the air filter has occurred. The indicator device may be mounted on the outer surface of the filter where visible for inspection. After a prescribed amount of airflow has passed the air filter or clogging of the air filter has occurred, the indicator device may change color, thereby alerting the user of the need to replace the air filter.
COLORIMETRIC INDICATOR RESPONSIVE TO AIR FLOW
INDICATEUR COLORIMETRIQUE REAGISSANT A UN ECOULEMENT D'AIR
WOOD ROBERT L (author)
2015-07-09
Patent
Electronic Resource
English
IPC:
E03B
Anlagen oder Verfahren zum Gewinnen, Sammeln oder Verteilen von Wasser
,
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
A simple and colorimetric fluoride receptor and its fluoride-responsive organogel
| British Library Online Contents | 2012
| British Library Online Contents | 2014