Logging; Views On The Edge; Definitions Of Data Log Values And Views - 3M Edge eg5 User Manual

Views on the Edge

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Logging

Logging
eg5 model only logs at one minute intervals and includes the following measurements:
Meter 1 logs L

Meter 3 logs L

Lc-a (if enabled)

If the dosimeter runs for one hour, then it will log 60 Lavg/Leq results, and 60 Lmax/Lcpk levels. In DMS, you
can customize the logged data chart results by checking Lavg/Leq, Lcpk, and/or Lmax measurement values.
Views on the Edge
The Edge is a user-friendly and customizable dosimeter. With a simple click of a checkbox in DMS, you can
select the appropriate measurement values or views to appear or not appear on the display of your
dosimeter. The following table briefly identifies the displayed data values and views with a brief definition.
(See the glossary for additional information of these terms.)

Definitions of data log values and views

To set up the Edge and work with noise-level data, you will want to have a good understanding of the terms
listed in Table 3-1.

NOTE: The following table is based on A-weighted, slow measurements. Thus, if you choose A or C-
weighted with Fast or Slow response the measurement values will change on the display (i.e., you
selected sound pressure level with C-weighting with Fast response, it will display as L
details, please see Table 3-2.
Views on Explanation
the EDGE
L Sound pressure level - is the basic measure of noise loudness, expressed in decibels. (In DMS
AS
this is noted as "SPL")
L Maximum sound level- is the highest sound level recorded during a measurement interval with a
ASMX
particular response setting (Slow or Fast) and weighting (A or C). LMax is the highest value that is
included in LAvg or dose calculations.
L Peak Level - is the highest instantaneous sound pressure level recorded during a measurement
CPK
interval. Unlike the maximum level, the peak is detected independently of dosimeter settings for
response rate or weighting.
L Minimum sound level - The lowest sampled sound level during the measurement interval
ASMN
allowing for the unit's Response Time setting (Fast or Slow).
L Average sound level - (in dB) computed for a chosen time duration, based on a 4, 5, or 6dB
AVG
exchange rate. L
sound levels at or above the threshold level are averaged into the calculations relating to noise
exposure. L
threshold of 90dB.
Table 3-1: Dosimeter views and definitions
/L
avg eq
/L
avg eq

Under OSHA regulations, unprotected workers may not be exposed to maximum sound
levels greater than 115dB, measured with a Slow response rate.

Under OSHA regulations, unprotected workers may not be exposed to peak sound
levels greater than 140dB.
with a 3dB exchange rate is referred to as LEQ (equivalent sound level). All
AVG
is typically calculated with no threshold, with a threshold of 80dB or with a
AVG
• Meter 2 logs L /L
avg eq
• Lc and L
pk max
.) For further
CF