3M eg4, eg3 user manual Dosimeter fields explained for the Edge

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Customizing set-up parameters in DMS

Dosimeter setting

Dosimeter settings for the Edge	Name Field
	*Note: refer to Glossary for more detailed information.
Heartbeat enable	When enabled (or checked), the LED will flash green while running
	and flash amber when stopped.
Response	Either Slow Time Response or Fast Time Response is applied to
	the measurements. (Typically Slow time response is used in the
	US market while Fast is used in the EU communities.)
C-A enable	When enabled (or checked), C minus A will be calculated.
Projected Time	A selectable time parameter via the up/down arrows or type in a
	value. The projected time value is used to make projected dose
	calculation for the dose measurement.
Peak Weighting	Select either A, C or Z for the peak frequency weighting.
Dose indicator LED	When enabled (or checked), the LED will flash red when the dose
	value exceeds the designated entered value.
Setup name	(Optional field) A setup name may be entered into the Meter 1
	and/or Meter 2 fields. When set, it appears on the top of Edge’s
	display (example setup names: OHSHA, MSHA, EU directive).
Threshold enable	When the checkbox is selected and a value is entered for meter 1
	and/or meter 2, the threshold is used to calculate Lavg, TWA, and
	Dose measurements.
Upper Limit	Select a UL dB level by the up/down arrows or by typing in a value.
	(Note: The upper limit (UL) is a measurement setting in which the
	user selects a specific decibel level. The UL value records the
	amount of time that the Sound level is at or greater than the
	entered level.)
RMS Weighting	Select either A or C RMS Weighting. (Note: The RMS (root mean
	square) are the results from the Edge with the response time and
	weighting settings taken into account.)
Criterion Level	Select a Criterion level via the up/down arrow or by typing in a
	value. (Note: Criterion level is the average SPL that will result in
	100% dose over the criterion time and is typically set by a
	regulatory agency such as OSHA, EU directive.)
Exchange Rate	Enter in (or select with up/down arrows) 3, 4, or 5 dB. ER refers to
	how sound energy is averaged over time. (OSHA uses a 5 dB
	doubling rate while most of the world uses 3 dB.)

Table 1-2: Dosimeter fields explained for the Edge

053-644, Rev E Page 25 eg4 & eg3