End of Service Life Indicator

End-of-service-life indicator (ESLI) A warning system that alerts a respirator user that the cartridge or canister is approaching the end of its usefulness. 

End-of-service-life indicator (ESLI) means a system that warns the respirator user of the approach ofthe end of adequate respiratory protection,forexample,thatthe sorbent is approaching saturation or is no longer effective. 

The respirator is equipped with an end-of-service-life indicator (ESLI) certified by NIOSH for the contaminant or... 

Can only be used (1) against gas and vapor contaminants with adequate warning properties, or (2) for specific gases or vapors provided that the service is known and a safety factor is applied ofr if the unit has an ESLI (end-of-service-life indicator)... 

Can end of service life indicators (ESLI) be used under all workplace conditions ... 

Enclosed laser device any laser or laser system located within an enclosure that does not permit hazardous optical radiation emission from the enclosure End-effector an accessory device or tool specifically designed for attachment to the robot wrist or tool mounting plate to enable the robot to perform its intended task End-of-service-life indicator a system that warns the respirator user of the approach of the end of adequate respiratory protection... 

Establishment of a cartridge change schedule when gas and/or vapor respirators that do not have end-of-service-life indicators are used... 

End-of-Service-Life Indicator Fibers per cubic centimeter of air Federal Emergency Management Agency Flame Ionization Detector... 

Service life for a particular plastic can be defined differently according to its area of application and the particular property that is critical for its serviceability, as well as for additional requirements (e.g., continuous mechanical load, cyclic flexural load). Important is that the property investigated by the aging test corresponds directly with the property required by the application, or is clearly related to it. Moreover, the property value that indicates the end of serviceability has to be clearly defined instead of a numerical value, this can also be an external condition provided by a reference sample. There are several ways to deduce service life in applications from the test results ... 

If laboratory tests using a disc of the filter membrane indicate that the filter will have insufficient throughput or life then prefiltration ould be considered. Ideally both filters should come to the end of their service life together, i.e. the dirt holding capacity of both filters should be exhausted at the same time. This enables both filters to be replaced together. A duplex system switching over both prefilter and fine filter is available. 

CRACKING AND SPALLING RATES, CONDITION INDICES AND END OF FUNCTIONAL SERVICE LIFE... 

Short-term tests do not always give an adequate indication of an adhesive s performance during end user applications. Laboratory tests may only be carried out over a thousand hours, and the joint may only be exposed to one type of environmental effect at a time. During its service life, however, the bond is exposed to multiple types of environments. Temperature and humidity may cause an adhesive bond to degrade much faster than when exposed to any single environment. Applied stress accelerates the effect of the environment on an adhesive joint. Data are not always readily available from manufacturers on this phenomenon. Environmental testing should be carried out on the proposed adhesive and adherend prior to its use in service. 

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