3M eg4 User Manual

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3M eg4 User Manual

3M Personal Safety Division

3M™ The Edge Personal Noise Dosimeter

The Edge

models eg4

User Manual

i

Table of Contents

 

Table of Contents

 

 

Chapter 1: Introduction ...................................................................

1

 

Dosimetry ........................................................................................

1

 

Noise dosimeter ............................................................................................

2

 

Range of sound .............................................................................................

3

 

What do the standards say?...........................................................................

3

 

Applications of the Edge ................................................................................

4

 

Noise assessment steps .................................................................................

5

 

The Edge Model ............................................................................................

6

 

Virtual dosimeters……………………………………………………………………………………………..6

 

Getting started ................................................................................

7

 

Checking the equipment .................................................................

7

 

Turning on .......................................................................................

8

 

LED indicator.................................................................................................

8

 

Navigating

9

 

Turning off .......................................................................................

9

 

Display and keypad .......................................................................

10

 

Diagram.......................................................................................................

10

 

3MTMDetection Mangement Software (DMS).................................

11

 

Loading .......................................................................................................

11

 

Docking station functionality........................................................

11

 

Docking station components .........................................................................

12

 

EdgeDock1 or EdgeDock5 .............................................................................

12

 

Powering EdgeDock1 or EdgeDock5...............................................................

13

 

Charging your dosimeter...............................................................................

14

 

Mounting the docking station to a wall...........................................................

15

 

Storing the dosimeter ...................................................................................

15

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Table of Contents

 

 

 

Chapter 3: Setting-up the Edge via DMS

...................................... 16

 

Noise studies.................................................................................

 

16

 

Understanding what data is stored ..............................................

16

 

Summary data..............................................................................................

 

17

 

Time history…………………………………………………………………………………………………… 17

 

Views on the Edge.........................................................................

 

18

 

Definitions of data log values and views.........................................................

19

 

Docking..........................................................................................

 

22

 

Communicating & downloading data..............................................................

22

 

Customizing set-up parameters in DMS........................................

23

 

Dosimeter setting .........................................................................................

 

24

 

Edge dosimeter settings……………………………………………………………………………………25

 

Display setting .............................................................................................

 

26

 

Security setting ............................................................................................

 

27

 

Auto Run setting ..........................................................................................

 

28

 

Firmware update ..........................................................................................

 

29

 

Saving and sending/setting configurations .....................................................

30

 

Running and operating your dosimeter.........................................

31

 

Overview of running a study .........................................................

31

 

Positioning the Edge on your shirt .................................................................

32

 

Windscreen and maintenance........................................................................

32

 

Checking battery power ................................................................................

 

33

 

Calibrating ...................................................................................................

 

34

 

Resetting the dosimeter................................................................................

 

35

 

Setting contrast on dosimeter .......................................................................

36

 

Running studies.............................................................................

 

37

 

Starting a run...............................................................................................

 

37

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Table of Contents

 

 

 

Stopping a study............................................................................

 

38

 

Indicators/Icons on the display......................................................................

38

 

Viewing measurements on the display.........................................

39

 

Locking or securing your dosimeter during run ...............................................

39

 

Locking or Securing ......................................................................................

 

40

 

Unlocking.....................................................................................................

 

40

 

Downloading data ........................................................................................

 

41

 

Viewing data and data finder page ................................................................

43

 

Report View .................................................................................................

 

44

 

Panel Layout View(charts/graphs) .................................................................

45

 

Quick tips with panels (charts/graphs)……………………………………………………………….45

 

Technical Support .........................................................................

 

46

 

LED indicator: disable/enable .......................................................................

46

 

Replacing microphone and windscreen........................................

47

 

Attaching/Detaching .....................................................................................

 

47

 

Hard Hat Attachment Kit ..............................................................

48

 

Appendix A: SPECIFICATIONS .....................................................

49

 

Standards ......................................................................................

 

49

 

Mechanical characteristics ..........................................................

49

 

Electrical characteristics .............................................................

50

 

Battery ........................................................................................................

 

50

 

Environmental effects ...................................................................

 

50

 

Temperature ................................................................................................

 

50

 

User Interface ...............................................................................

 

50

 

Display ........................................................................................................

 

50

 

Keypad ........................................................................................................

 

50

 

EdgeDock1 and EdgeDock5 ..........................................................

51

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Table of Contents

 

 

Physical attributes of EdgeDock1 and EdgeDock5

...........................................51

 

Measurements...............................................................................

52

 

Types ..........................................................................................................

52

 

Measurement parameters .............................................................................

52

 

Communications...........................................................................................

53

 

Special functions ..........................................................................................

53

 

Edge Block Diagram......................................................................

54

 

Edge Block Diagram (continued) ..................................................

55

 

3M Quest Service ..........................................................................

57

 

Contacting 3M Quest Technologies ................................................................

57

 

International customers ................................................................................

57

 

Warranty ........................................................................................

57

 

Appendix B: Glossary of Terms....................................................

58

 

INDEX………………………………………………………………………………….66

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List of Figures

 

List of Figures

 

Figure 1-1:

The Edge and dosimetry..................................................................................................

1

Figure 1-2:

Illustration of how the dosimeter operates and processes ..................................................

2

Figure 1-3:

Parameter setup screen for eg4 .......................................................................................

6

Figure 2-1:

Identifying your equipment..............................................................................................

7

Figure 2-2:

Powered on with measurement view displayed..................................................................

8

Figure 2-3:

Edge Keypad..................................................................................................................

10

Figure 2-4:

EdgeDock1 ....................................................................................................................

11

Figure 2-5:

Attaching the charger adapter with the plug adapter ........................................................

12

Figure 2-6:

Attaching charger adapter to EdgeDock1 and EdgeDock5 .................................................

13

Figure 3-1:

Edge setup and retrieve data buttons in DMS...................................................................

16

Figure 3-2:

Sample summary data from DMS reporting ......................................................................

17

Figure 3-3:

Sample time history data (or logged data) chart...............................................................

17

Figure 3-4:

Communicating - connecting a docked Edge to a pc .........................................................

22

Figure 3-5:

New Hardware wizard for Edge Dock...............................................................................

23

Figure 3-6:

Dosimeter screen ...........................................................................................................

24

Figure 3-7:

Edge display screen........................................................................................................

26

Figure 3-8:

Edge security setting ......................................................................................................

27

Figure 3-9:

Edge auto run screen .....................................................................................................

28

Figure 3-10:

Edge firmware update screen..........................................................................................

29

Figure 3-11:

Saving and sending Edge setups .....................................................................................

30

Figure 4-1:

Quick help list for running a study ...................................................................................

31

Figure 4-2:

Positioning/Attaching the Edge........................................................................................

32

Figure 4-3:

Battery indicators ...........................................................................................................

33

Figure 4-4:

Calibrating .....................................................................................................................

34

Figure 4-5:

Splash screen.................................................................................................................

35

Figure 4-6:

Resetting the Edge from the keypad................................................................................

35

Figure 4-7:

Changing the contrast from the keypad ...........................................................................

36

Figure 4-8:

Display screen while running...........................................................................................

37

Figure 4-9:

Measurement view on the Edge ......................................................................................

39

Figure 4-10:

Locking/Securing run......................................................................................................

40

Figure 5-1:

Communicating between your pc and the Edge................................................................

41

Figure 5-2:

DMS start screen............................................................................................................

42

Figure 5-3:

Downloading with the Edge models eg3/eg4....................................................................

42

Figure 5-4:

Recent downloaded data ................................................................................................

43

Figure 5-5:

Data Finder page with the downloaded data ....................................................................

43

Figure 6-1:

Microphone and windscreen assembly .............................................................................

47

List of Tables

 

Table 2-1:

LED indicators explained..................................................................................................

9

Table 2-2:

EdgeDock1 and EdgeDock5 components..........................................................................

12

Table 3-1:

Dosimeter views and definitions ......................................................................................

19

Table 3-2:

Dosimeter measurement descriptors/variants...................................................................

21

Table 4-1:

Indicators (i.e., run, stop, battery, and OL)......................................................................

38

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1 Dosimetry

Introduction

Dosimetry

Measuring noise in the workplace is an important element of hearing conservation programs and noise reduction programs. With a noise dosimeter, you can assess and determine a worker’s daily exposure to noise levels. This information can be used to ensure compliance with regulatory bodies or to ensure if hearing conservation programs are needed.

To get you started quickly with the Edge, the first chapter is dedicated to introducing basic noise dosimetry terms and information. The subsequent chapters will guide you through setting up the dosimeter, running studies, and assessing your results with easy to follow steps and illustrations.

Figure 1-1: The Edge and dosimetry

CHAPTER

1

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2Dosimetry

Noise dosimeter

Noise dosimeter

What is a noise dosimeter and how does it compute measurements?

Essentially, a noise dosimeter is composed of the following: a microphone with a preamplifier, a weighted network, fast or slow response time, an internal clock, calculator, and memory to store logged data.

The illustration below is a diagram of a basic noise dosimeter. The microphone will, when exposed to a sound pressure, generate an electrical signal. The signal will be increased by a preamplifier, and then is regulated to an applicable level by the range control (dB range). The signal then goes through a filter set or weighting system. The next circuit is the response circuit, which controls the dampening of the readout. The response choices are typically Slow or Fast. Finally, the results will display on the dosimeter screen.

For computation and storage, the clock tracks the sampling time. Dosimeters record how long sound levels exceeded a set upper limit. The calculator computes an L-avg, a dose, a TWA, and other data. The memory stores all times, calculations, and measurements.

For post-processing, DMS is used to view and analyze your measurement results with the option to view and/or print reports.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mic &

 

Range control

Apply filters

 

 

Fast/Slow

 

 

Measurement

Preamp

 

(70-140dB)

(A or C weighting)

 

Response

 

 

results on the Edge

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clock

Calculator

File storage

 

 

 

system

 

 

 

 

DMS – Manage, setup and report

Figure 1-2: Illustration of how the dosimeter operates and processes

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3Dosimetry

Range of sound

Range of sound

Sound pressure is measured in decibels, or tenths of a Bel. Sound pressure level is indicated as dB SPL. Since the human ear can detect sounds with an extensive range of amplitude, a decibel scale is used to simplify the measurement results. For example, the ratio between the threshold of hearing and threshold of pain in the human ear if measured in true energy is 10,000,000 times! The same range using the dB scale is 0 - 140 dB referenced to 20 µPa (Micropascals).

The quietest sound that humans can hear has an amplitude of approximately 0 dB. Prolonged exposure to sound pressure levels exceeding 85 dB can cause permanent damage to the ear. Sound levels in excess of 130 dB are more than the human ear can safely withstand and can result in serious pain and permanent damage.

What do the standards say?

Many organizations have studied and analyzed the effects of high sound exposure on hearing. As a result, standards were developed to regulate personal noise exposure. In the United States, the Occupational Safety and Health Administration (OSHA), the Mine and Safety and Health Administration (MSHA), and the American Conference of Governmental Industrial Hygienists (ACGIH) have all created regulations and limitations on total permissible noise exposure. International standards are specified by the health and safety regulations such as the European Union (EU) Directive 2003/10/EC. Additionally, the International Electrotechnical Commission (IEC) IEC-61252 has specific guidelines and regulations to monitor noise in the workplace.

To access these copyrighted standards, please refer to the following:

OSHA - http://www.osha.gov

MSHA- http://www.msha.gov

NIOSH - http://www.cdc.gov/niosh/topics/noise

ACGIH - http://www.acgih.org/

IEC - http://www.iec.ch

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4 Dosimetry

Applications of the Edge

Applications of the Edge

The Edge has a cable-free, mounted microphone that converts sound pressure into an electrical signal. This signal is conditioned, monitored, and integrated over time in order to provide a host of automatically calculated values that can be used in occupational and environmental noise assessments. Programmable parameters permit the Edge to serve many applications. The Edge can be used in the following applications:

Time history: manufacturing

Peak Measurement: 121.20 dB

As a personal noise dosimeter - Used to measure a worker's daily exposure to noise levels. This information can be used to ensure compliance with OSHA, MSHA, ACGIH, IEC, or your own customized parameter settings to determine if your workers are over-exposed to noise.

As a time-history monitor- Used to provide a worker's minute-by- minute noise exposure levels. This data can help you identify major contributors to the average daily noise exposure.

As a survey monitor

1.Throughout a plant/facility – used to oversee noise levels throughout an entire facility. You can identify machines and

equipment which produce harmful noise levels.

2.Specific areas in a plant/facility- used to identify key areas as “noisy” and implement noise control options. Employees may be exposed to unacceptable noise levels.

As a peak dosimeter- Used to detect the highest level of instantaneous sound pressure.

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5 Dosimetry

Noise assessment steps

Noise assessment steps

1.Perform a task-based work flow analysis of unacceptable “noisy” areas and list regulations/codes you will follow.

Observe facility/areas and jot down areas of concern

Check with standards and noise ordinance regulations in your region/city.

See Chapter 1 for basic information on dosimetry and standards

2.Setting-up your dosimeter parameters for your noise studies.

Customize measurement setup (i.e., criterion level, threshold, weighting, exchange rate, etc.)

See chapter 2 for getting started with your dosimeter

See Chapter 3 for customizing your set-up parameters

See Chapter 6 for Noise study scenarios

3.Running your studies.

Calibrate dosimeter

Attach the dosimeter

Run, observe, and stop your studies

Understand display indicators

See Chapter 4 “Running and operating the Edge”

4.View your results via DMS.

Working with Charts and Graphs

Organizing and saving your studies

See Chapter 5 to view measurements with Detection Management Software DMS

5.Develop corrective actions.

Engineering: redesign tools, implement changes in workstation

Administrative: job sharing/rotations, redefinition of job functions, reduce duration operating tool/equipment, and/or implement medical surveillance

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6 Dosimetry

The Edge Model

The Edge Model

The “eg4” model features two virtual dosimeters with data logging. Once the parameters are set and saved in the dosimeter, you can monitor two different dosimeters by a single press of the Enter key. This will toggle you between the two dosimeters. The “eg3” model is equipped with one dosimeter setting and will not data log (older model no longer available).

Figure 1-3: Parameter setup screen for eg4

Virtual dosimeters

You can monitor and log noise studies by enabling two different parameter settings in one dosimeter, also referred to as “virtual dosimeters”. For instance, you may want to set one dosimeter to log using the OSHA HC (Occupational Safety and Health Administration - Hearing Conversation) parameters and also monitor noise with the OSHA PEL (Occupational Safety and Health Administration – Permissible Exposure Level) settings.

A few scenarios of virtual dosimeters include:

Industrial noise control

Hearing conservation compliance

Work site assessments

Personal noise verification

Military applications

Regulatory compliance (i.e., OSHA, MSHA, IEC, ACGIH)

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CHAPTER

7

 

Checking the equipment

2

 

 

 

 

The Edge Model

 

Getting started

This chapter is designed to guide you through basic information you will need to begin logging your studies.

Checking the equipment

If your instrument was sent to you in a storage case, you will want to remove all the packaging and acquaint yourself with the following equipment so you can quickly get started with your noise studies.

NOTE: Depending on the accessories you selected, the dosimeter may have the following components. For the docking stations, you will either have an EdgeDock1 or an EdgeDock5. (For more information on parts/accessories, please refer to www.3m.com/detection.)

USB cableconnects

EdgeDock to the PC

Edge model eg4

microphone and windscreen attached

mounting clasps attached

 

 

 

 

 

 

 

 

 

 

EdgeDock1

 

 

 

 

 

 

DMS software

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EdgeDock5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

• Optional feature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

**Universal charger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Extra windscreen for

 

 

 

 

 

 

adapter (Power supply

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

microphone

 

 

 

 

 

 

cord for the docking

 

 

 

 

 

 

 

 

 

 

 

 

 

station)

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2-1: Identifying your equipment

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8Turning on

LED indicator

Turning on

1. To turn on the Edge, press the on/off and enter button.

The Edge splash screen (see Figure 2-3 for an example, page 10) will appear indicating the model (i.e. “eg4”) and firmware version. The screen will be in the measurement view.

LED Indicator

Battery indicator icon

If icon is fully shaded, this indicates full battery power (approx.50+ hours)

View

Displays measurement values, battery information, and calibration information

Figure 2-2: Powered on with measurement view displayed

LED indicator

There is a three-color LED indicator on the Edge, located to the right of the 3M logo which includes Red, Amber, and Green.

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9Turning off

LED indicator

Table 2-1 identifies when and why the LED indicator color will appear.

NOTE: The LED indicator can be disabled via DMS (see section, “Dose indicator LED” page 25).

LED indicator

 

 

The EDGE LED

Explanation

indicator

 

Red

A flashing red LED indicates the dose has exceeded the alarm

 

level.

Amber

A flashing amber LED indicates the dosimeter is stopped and

 

has not exceeded the dose alarm level.

Green

A flashing green LED indicates the dosimeter is running and has

 

not exceeded the dose alarm level.

Table 2-1: LED indicators explained

Navigating

Once the dosimeter is “Powered-On”, press the up/down arrows to navigate through the measurement values and battery run time.

Turning off

1. Press and hold the on/off and enter button.

• “3, 2, and 1” countdown will appear as the dosimeter is powered off.

NOTE: To halt the power off mode, simply let go of the on/off enter button.

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10Display and keypad

Diagram

Display and keypad

The keypad is used to run and stop your studies, view your measurement values, and power on and off the dosimeter.

Diagram

The following diagram explains the features on the display and keypad.

Windscreen and microphone

LED indicator

Red – indicates dose exceeded the alarm level Amber – dosimeter stopped

Green – dosimeter measuring

Display (Splash screen shown)

View data and various indicators

Up Arrow

Used to scroll through display/screen views

On/Off and Enter

Used to power On/Off the meter. Used to switch between (toggle)

 

dosimeter one and dosimeter two

 

measurements and settings.

Run

and Stop

Used to activate meter when running or logging measurements.

Used to Stop your noise study.

Down arrow

Used to scroll through display/screen views

Figure 2-3: Edge Keypad

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113MTMDetection Mangement Software (DMS)

Loading

3MTMDetection Mangement Software (DMS)

3MTM Detection Management Software (DMS) is a software application designed by 3M that runs under the Windows operating system. You can use DMS for a variety of functions related to the Edge dosimeter and with many other 3M instruments. DMS has the ability to customize your set-up parameters, display data, manipulate data, and create reports.

Loading

To load DMS, follow the screen prompts.

It will automatically load the drivers for the EdgeDock1 and/or EdgeDock5. If loading from the 3M detection Internet site, please follow the directions online located: www.3m.com/detection or www.dms.com/detection.

Docking station functionality

Depending on the kit you purchased, you may have an EdgeDock1 and/or an EdgeDock5. Both are designed similarly with the same LED indicators. The main difference with the EdgeDock5 is that it has five bays for docking, charging, and/or managing the dosimeters. If desired, the EdgeDock5 will charge all docked instruments at one time.

The docking station serves a dual-purpose role:

1.It is used to charge the battery on the dosimeter(s).

2.It is used to communicate between the software (DMS) and the dosimeter (i.e., import, export settings and measurement files).

Charging Indicator

Power Indicator

Charge contacts

Power connector

USB connector

Figure 2-4: EdgeDock1

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12Docking station functionality

Docking station components

Docking station components

The table below explains the EdgeDock1 or EdgeDock5 LED indicators, power connector, USB connector, and contact pins.

 

 

Docking station

Explanation

components

 

Charging indicator

Identifies if the dosimeter is “charging” or “fully charged”. A red blinking LED

 

indicates the dosimeter is charging. A solid green LED equates to a fully

 

charged dosimeter. (Note the charging indicator is the first, or top, LED

 

indicator.)

Power indicator

A red LED indicates the docking station is powered on.

 

 

Power connector

Attach the power connector cable to the docking station in order to charge

 

the dosimeter(s).

USB connector

Attach the USB connector to communicate with the dosimeter(s).

Charge Contacts

Placing the dosimeter (s) onto the charge contacts allows charging and

 

communication.

Table 2-2: EdgeDock1 and EdgeDock5 components

EdgeDock1 or EdgeDock5

The EdgeDock1 and EdgeDock5 are powered by a 12-volt charger adapter.

Figure 2-5 illustrates the assembly of the charger adapter and the plug adapter. It slides into place by guiding it down the back cavity (opening) of the power supply.

NOTE: the example is a typical adapter which may be different than the one you are using. Mechanically, it will function similarly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A. Charger adapter

B. Slide plug adapter into the crevices of base

Figure 2-5: Attaching the charger adapter with the plug adapter

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13Docking station functionality

Powering EdgeDock1 or EdgeDock5

Powering EdgeDock1 or EdgeDock5

Powering EdgeDock1 or EdgeDock5

1.Assemble the charger adapter and plug adapter as illustrated in Figure 2-5. (It will be the same process for an EdgeDock5.)

2.Plug the charger adapter directly into the wall (electrical wall plate).

3.Plug the opposite end into the power connector (or jack) of the EdgeDock1. NOTE: a light, solid red light will appear indicating power to the charger.

EdgeDock1 LED indicator

Amber indicates “ON”.

Charger adapter cord

Figure 2-6: Attaching charger adapter to EdgeDock1 and EdgeDock5

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14Docking station functionality

Charging your dosimeter

Charging your dosimeter

The number of hours you have used your dosimeter from your last charge will impact your total charge time. For example, if the battery clock indicator (see “Checking the battery power” for more information) displays 20 hours remaining on the battery and you wish to charge the battery, the approximate charging time is 2 hours.

To charge a fully discharged battery, allow approximately 4 to 4.5 hours of charge time.

How to charge

1.Plug in the power adapter to the EdgeDock. (See Figure 2-6, page 13.)

• When powered on, the EdgeDock bottom LED indicator will appear solid amber.

2.Slide the Edge (1) downward onto the Hook of the EdgeDock. (See Figure 2-7 below).

NOTE: When the dosimeter is docked, the top LED indicator on the base will be illuminated. A red flashing LED indicates it is charging. A green solid LED indicates a fully charged battery.

1

Backside of Edge

Open cavity & contacts

Slides into “Hook” of EdgeDock. The contacts will align to each other.

3 Docked

2

EdgeDock1

Hook

Contacts Dosimeter LED dock

Docking station LED

Figure 2-7: Docking the Edge with a single and 5-bay docks

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15Docking station functionality

Mounting the docking station to a wall

Mounting the docking station to a wall

The docking station is equipped with two single screw slots in case you wish to mount the docking station to the wall. The figure below displays the backside of the single bay dock.

Screw slots

Used to mount to a wall

Figure 2-8: Backside of EdgeDock1

Storing the dosimeter

To preserve the life of the battery, it is suggested that the dosimeter is turned off when you are storing the dosimeter.

Additionally, if the dosimeter is docked and stored on the docking station when it is powered off, it will still draw a small amount of battery power from the dosimeter. Thus, it is recommended to store the dosimeter(s) separately from the docking station.

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CHAPTER

16

 

Understanding what data is stored

3

 

 

 

 

Noise studies

 

Setting-up the Edge via DMS

Noise studies

The eg4 model comes equipped with two customizable user setups. The eg3 model has one customizable user setup. You have the option to customize the parameters for threshold values, exchange rate values, an upper limit value, and a criterion level.

This chapter explains data storage, the pre-set views on the dosimeter, and how to customize the parameters and display of your Edge via DMS. It concludes with an explanation of downloading data from the dosimeter to the software.

Family:

Noise Dosimeters

Setup:

Select to access the acoustic family

Edge model

Download panel

Figure 3-1: Edge setup and retrieve data buttons in DMS

Understanding what data is stored

When you are running noise dosimetry studies, there are two types of data stored on the dosimeter which include the summary data and time history (or Logged) data.

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17Understanding what data is stored

Summary data

Summary data

Summary data represents values that occurred over the entire run of the study. For an average value, such as Lavg, it represents the average decibel value over the entire run time. Peak and Max values are the highest measurements that occurred throughout the run time.

Figure 3-2: Sample summary data from DMS reporting

Time history

Time history data is also referred as “logged data” which plots measurement values in minute by minute intervals.

Time History data represents values that occurred over the most recent time period, which is the logging interval. For example, if the log interval is 1 minute, then the Peak value is the highest Peak value for that 1 minute, and the Lavg value is the average dB value for that 1 minute.

Figure 3-3: Sample time history data (or logged data) chart

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