3M eg4 user manual Descriptors Variants Lmax variants, Dosimeter measurement descriptors/variants

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Views on the Edge

Definitions of data log values and views

Views on the		Explanation
Edge
		Memory storage symbol –
		eg4: The eg4 model displays the total memory storage
		remaining in hours and minutes. For example, if it displays the
		memory symbol 181:50 this represents 181 hours and 50
		minutes of memory storage remaining on the dosimeter.
		eg3: The eg3 model displays the memory by indicating the
		remaining number of studies it will store into memory. For
		example, if the eg3 displays “50” this indicates you can store 50
		studies on the dosimeter. (Note: the difference is because the
		eg3 model does not data log. This is an older model.)
		Calendar symbol– The calendar symbol and calendar field
		displays the day-month-year
		Battery power clock symbol – The battery power clock
		symbol identifies the number of hours and minutes of battery
		time remaining on the dosimeter.
	Table 3-1: Dosimeter parameters and definitions (continued)

Edge Measurement descriptors/variants

The following is an explanation of the Edge descriptors and equivalents for Lmax, Lmin, & Lpk.

	Descriptors	Variants
	Lmax variants	Sound pressure level - is the basic measure of noise loudness, expressed
		in decibels. (In DMS this is noted as “SPL”)
	LASMX	Maximum sound level- is the highest sound level recorded during a
		measurement interval with a particular response setting (Slow or Fast) and
		weighting (A or C). LMax is the highest value that is included in LAvg or
		dose calculations.
		Under OSHA regulations, unprotected workers may not be exposed to
		maximum sound levels greater than 115 dB, measured with a Slow
		response rate.
	LCPK	Peak Level - is the highest instantaneous sound pressure level recorded
		during a measurement interval. Unlike the maximum level, the peak is
		detected independently of dosimeter settings for response rate or weighting.
		Under OSHA regulations, unprotected workers may not be exposed to peak
		sound levels greater than 140 dB.
	LASMN	Minimum sound level - The lowest sampled sound level during the
		measurement interval allowing for the unit’s Response Time setting (Fast or
		Slow).
	Table 3-2: Dosimeter measurement descriptors/variants
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