edc SM-7204 User manual

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USER’S GUIDE
HAZ-DUST SM-7204™
REAL-TIME PERSONAL SILICA
MONITOR
MODEL SM-7204
DOC# HD7024 0621
Environmental Devices Corporation
Fieldstone Industrial Park
4 Wilder Drive Bldg. # 15
Plaistow, NH 03865
USA
Phone: [phone]
[phone]
Fax: [phone]
E-mail: [email protected]
E-mail: [email protected]
E-mail: [email protected]
Website: www.hazdust.com

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SM-7204™
User’s Guide

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Licenses, Copyrights and Trademarks
This documentation contains trade secrets and confidential information proprietary to Environmental
Devices Corporation (EDC). The software supplied with the instrumentation, documentation and any
information contained therein may not be used, duplicated or disclosed to anyone, in whole or in part,
other than as authorized in a fully executed EDC End User License or with the express written
permission of EDC.
©2021 Environmental Devices Corporation. All rights reserved throughout the world.
HAZ-DUST™is a registered trademark of Environmental Devices Corporation. Other trademarks are
the property of their respective holders.
Safety Notice
Repair of instrumentation supplied by Environmental Devices Corporation (EDC) should only be
attempted by properly trained service personnel, and should only be conducted in accordance with the
EDC system documentation. Do not tamper with this hardware. High voltages may be present in all
instrument enclosures. Use established safety precautions when working with this instrument.
The seller cannot foresee all possible modes of operation in which the user may attempt to utilize this
instrumentation. The user assumes all liability associated with the use of this instrumentation. The
seller further disclaims any responsibility for consequential damages.

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Warranty
Products manufactured by Environmental Devices Corporation (EDC) are warranted against defects
and workmanship for a period of one year from shipping date of original order to original purchaser at
the original ship to address. An additional extended warranty is available for an additional year and
follows the same terms and conditions. Any products or parts found defective by Environmental
Devices Corp. within the stated warranty period will be replaced or repaired at EDC’s discretion.
The warranty includes only instruments used in the manner the manufacturer (EDC) intended. The
warranty does not cover misuse, negligence, accidents, acts of God, damage from shipping, incorrect
cleaning and/or maintenance, unauthorized repairs, or any alterations and/or modifications including
hardware, software, and consumables preformed outside of the manufacture’s facility.
Consumables and expendables are not covered under the manufactures warranty. Common examples
include, gas scrubbers, filters, O-rings, and batteries. Batteries will be covered for 90 days from ship
date.
Modification of products or parts performed by any other person or entity other than EDC will void
warranty.
If a repair or replacement is desired, communication with our technical support staff regarding any
products or parts believed to be under warranty is mandated. Once communication is made a Return
Merchandise Authorization number will be issued.
Products not manufactured by us are subject to the vendor/manufactures warranty policy.
Products manufactured and returned to EDC are subject to a 25% restocking fee.
Shipping to the factory is paid by the customer. EDC will assume shipping charges for all warranty
repairs/replacements on the return to the original ship to address stated on initial Purchase Order
issued to EDC when allocating equipment.
All returning equipment must be decontaminated of any harmful substances.
Any replacement parts will be warranted for 90 days from shipping date and the same terms and
conditions as above apply.

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Table of Contents
1. Section One.....................................................................................................................................................8
Sections 1- Introduction to the SM-7204............................................................................................................9
Introduction to the SM-7204 ............................................................................................................................10
Real Time Dust Monitoring Principles...............................................................................................................11
Overview of the SM-7204 .................................................................................................................................12
Features of the SM-7204 ..................................................................................................................................14
Specifications of the SM-7204 ..........................................................................................................................16
Components of the SM-7204............................................................................................................................17
2. Section Two...................................................................................................................................................18
Section 2- Operating Parameters of the SM-7204............................................................................................19
Turning the SM-7204 ON and OFF....................................................................................................................20
Using the Menu.................................................................................................................................................21
Creating Unique Aerosol Profiles......................................................................................................................23
Cross Calibration ...............................................................................................................................................24
Selecting Language ...........................................................................................................................................25
Setting the Alarm ..............................................................................................................................................26
Setting Date and Time.......................................................................................................................................28
Setting Log Rate ................................................................................................................................................30
Data Recording..................................................................................................................................................31
Data Management ............................................................................................................................................32
About Screen.....................................................................................................................................................34
3. Section Three ................................................................................................................................................35
Section 3- Operating the SM-7204 ...................................................................................................................36
Connecting Sensor ............................................................................................................................................37
Selecting the Particle Size .................................................................................................................................38
Particulate Selection .........................................................................................................................................39
Thoracic Dust Particulates ................................................................................................................................40
Respirable Dust Particulates .............................................................................................................................41
Inhalable Dust Particulates ...............................................................................................................................42
Flow Rate ..........................................................................................................................................................45
Zero Calibration ................................................................................................................................................48
Sampling Procedure..........................................................................................................................................50

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Real-Time Data Viewing....................................................................................................................................51
Stop Run............................................................................................................................................................52
Infield Calibration Verification..........................................................................................................................53
Faults.................................................................................................................................................................55
Reviewing Stored Data......................................................................................................................................56
Uploading Data .................................................................................................................................................57
Live Feed ...........................................................................................................................................................58
4. Section Four ..................................................................................................................................................60
Section 4- Using DustComm Pro Software........................................................................................................61
Introduction to the DustComm Pro Software...................................................................................................62
Installing DustComm Pro Software...................................................................................................................63
Loading DustComm Pro Software.....................................................................................................................64
Menu Selections................................................................................................................................................65
File Menu Commands .......................................................................................................................................66
Downloading Data.............................................................................................................................................67
DustComm Pro Windows..................................................................................................................................69
Translating Data to an ASCII Text File ...............................................................................................................71
Generating a Plot ..............................................................................................................................................72
Data Plot Menu Selections................................................................................................................................73
Editing Title .......................................................................................................................................................75
Applying a Correction Factor ............................................................................................................................76
Inability to Download Data to PC......................................................................................................................77
5. Section Five ...................................................................................................................................................78
Section 5- Maintenance on SM-7204................................................................................................................79
Checking the Calibration Span ..........................................................................................................................80
Battery Maintenance ........................................................................................................................................82
Cleaning Sensor Optics......................................................................................................................................84
Cleaning Sensor Optics......................................................................................................................................84
Appendix ...............................................................................................................................................................84
Appendix A........................................................................................................................................................84
Appendix B ........................................................................................................................................................84
Appendix C ........................................................................................................................................................84
Appendix D........................................................................................................................................................84

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1. Section One
Introduction to the SM-7204

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Introduction
This section introduces and describes the SM-7204. It Explains operating principles of the SM-7204
and identifies features, specifications and components of SM-7204.
This section contains the following topics.
•Introduction to the SM-7204……………....Page 10
•Real-Time Dust Monitoring Principles…....Page 11
•Overview of the SM-7204…........................Page 12
•Features…………………………………....Page 14
•Specifications………………………….......Page 16
•Components…………………………….....Page 17
Sections 1- Introduction to the SM-7204

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Introduction
The SM-7204 is the world’s first personal dust monitor to combine traditional filter techniques with
real-time monitoring methods. These techniques combine to overcome limitations of all other dust
monitoring products.
Dust Monitoring Methods
Figure 1-1. Diagram showing components used for both the traditional and real-time dust monitoring methods.
Real Time Dust
Monitor
Traditional Filter
Gravimetric Dust
Measurement
Filter Cassette
Sensor Head
Introduction to the SM-7204

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The traditional and real-time dust monitoring methods are described below.
Description of traditional method
Air is drawn by a vacuum pump through a 25mm or 37mm diameter membrane filter. The fibers and
particles collected on the membrane filter must be counted or weighed in a laboratory for further
analysis.
Advantages of traditional method
•OSHA compliance reference method.
•High level of specificity and accuracy.
•Collection of dust particles, which are available for further chemical analysis.
Description of real-time method
Dust particles are drawn into the sensor head and are detected once every second. Dust concentrations
are instantaneously calculated and displayed on the SM-7204’s touch screen display. All data points
are stored in memory for later analysis.
Advantages of real-time method
•Immediate estimations of the concentration of a contaminant, permitting on-site evaluations.
•Provision of permanent 24-hour records of contaminant concentrations using continuous monitors.
•Internal audible alarm to warn workers of approaching hazardous situations.
•Reduction of number of manual tests.
•Reduction of number of laboratory analyses.
•Provision of more convincing evidence for presentation at hearings and litigation proceedings.
•Reduced cost of obtaining individual results.
Real Time Dust Monitoring Principles

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Ease of use
•The user controls all functionality and programming using menus displayed on color touch screen.
•The compact unit clips to the workers belt or pocket allowing for flexibility during on-site
monitoring.
•A detached sensor head easily attaches to the worker for true OSHA defined breathing zone
measurements.
User adjustable alarms can be preset to alert the worker of approaching threshold limits.
General Information
•The touch screen displays real-time concentration in milligram per cubic meter (mg/m3 or ug/m³)
in accordance with OSHA Reference Methods.
•Statistical information of TWA, STEL, Max and Min levels can be viewed instantly.
•The SM-7204 is calibrated using ISO 12103-1 Fine Test Dust (Arizona Road Dust ).
•Calibrations include NISOH 0600 methods for Respirable Dust and 0500 Method for Nuisance
Dust with a + 10% accuracy.
•The calibration and flow of the SM-7204 can be adjusted to compensate for Thoracic, Respirable,
or Inhalable changes in particle composition and distribution.
Overview of the SM-7204
Inhalable
Thoracic
Respirable
Bronchiole
Pleura
Bronchus
Trachea
Larynx
Particle Size-Selective Sampling
Figure 1-2. Diagram showing breathing zones of Inhalable, Thoracic, and Respirable dust particles.

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DustComm Pro Software
The SM-7204 comes equipped with DustComm Pro software, which allows the user to look at real-
time concentrations and graphs and internally store data to be downloaded to a PC for further analysis
DustComm Pro software is designed for more detailed analysis of sampled data. Pull down menus
provides a user-friendly environment to store and analyze data and print management ready reports.
Data can easily be exported in comma-delimited files importable into spreadsheet programs such as
Microsoft Excel.
The data plots provided with DustComm Pro enable:
•Detailed statistical analysis.
•
Creation of graphics and charts.
•
Mathematical correction of particle characteristics when aerosol significantly differs from
calibration dust.
•Real time viewing of concentration values and real-time graphs.
•The ability to wirelessly communicate between the device and the software.

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Introduction
The SM-7204 provides a unique combination of features to provide superior data quality, ease of use,
and flexibility to the user. Below is a partial list of distinctive features.
Real-time display of
•Particulate exposure levels
•TWA, STEL, Min, and Max levels
•Thoracic, Respirable or Inhalable Particulate Mass
•True breathing zone measurements
•Unique on screen programming of data sets
•Unique on Screen programming of Aerosol Profiles.
•Flow rate
•Log rate
•Graphs
•Concentration ranges
•Engineering units of measurement ug/m3 or mg/m3
•In field calibration verification
Functional features
•Calibration to NIOSH methods for lung damaging particles.
•In-line concurrent filter samples for gravimetric analysis.
•High sensitivity of 0.001-500 mg/m3 or 1-500,000 ug/m3
•Interchangeable size-selective sampling inlets.
•Internal flow compensated air sampling pump.
•Simple cleaning of sensor hardware.
•Easy user access to rechargeable battery and internal filter.
Operational features
•On-screen programming of sampling and data storage parameters.
•Ability to name data sets and dust profiles.
•Multiple date formats
•Menu options in multiple languages.
•Multiple user selectable audible alarm options
•In-field zero and span check of instrument calibration.
•Ability to Zero the instrument.
•Wireless communication.
•Ability to enter calibration factors.
Features of the SM-7204

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Data management
•Choice of 1 second, 4 sec, 10 sec or 60 seconds averaging/storage intervals.
•Up to 15 days of stored data
•Memory storage of up to 43,000 data point or 15 days of storage.
•DustComm Pro Software supplied with a micro USB cable for downloading data to a PC. Data
translation importable into Excel.
Security feature
The instrument will not power off when in active sampling mode. To power down the instrument, stop
sampling and press the power off button.

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Introduction
The SM-7204 meets the following specifications.
Specifications
SPECIFICATION
RANGE
Calibration
NIOSH 0600 with SAE Test Dust
Accuracy
+ 10%
Precision
0.02 mg/m3
Sensing range
0.001-500 mg/m3 or 1-500,000 ug/m3
Particle size range
0.1 to 10 m Respirable
0.1 to 50 m Thoracic
0.1 to 100 m Inhalable (IOM)
Recording time
1 second,10 seconds, 30 seconds and 1 minute.
Flow rate
The pump is capable to maintain flow within +/- 5%
as follows:
1.0 LPM up to 70 Inch H2O
2.5 LPM up to 55 inch or H2O
5.0 LPM up to 20 inch H2O
Memory
43,000 data points
Output
Micro USB
Operating
temperature
32 to 120F (0-50C)
Humidity range
95% non-condensing
Battery
Rechargeable Lithium Ion Battery
Battery life
22 + hours
Charging time
3 hours
Size (case)
3.5” x 2.25” x 4.75”
Sensor Dimensions
1.75” x 1.5”
Weight
1.12 lbs.
Specifications of the SM-7204

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Components
The following components ship with the SM-7204.
•SM-7204 Monitor.
•Hard Carrying Case
•Battery charger with US, UK, Asia, and European adapters
•GS-3 Cyclone for Respirable Sampling
•Detachable Thoracic sampling inlet.
•Opaque filter cassette holder.
•SM-7204 Multi Media USB Drive, Including: DustComm Pro Software and the Instruction
Manual.
•Zeroing filter.
•Carrying case.
•Open faced sampling Adapter
•Calibration Certificate
•Manufactures Warranty.
Components of the SM-7204

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2. Section Two
Operating Parameters of the SM-7204

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Introduction
This section describes the steps involved in starting the SM-7204 and configuring its operating
parameters.
This section contains the following topics.
•Turning the SM-7204 on and off….....Page 20
•Using the Menu……………………...Page 21
•Creating Unique Aerosol Profiles..…Page 23
•Cross Calibration……………………Page 24
•Selecting the Language……………...Page 25
•Setting the Alarm…………………....Page 26
•Setting the Date and Time………….. Page 28
•Setting Log Rate……………………Page 30
•Data Recording………………………Page 31
•Data Management…………………...Page 32
•About Screen………………………..Page 34
Section 2- Operating Parameters of the SM-7204

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Introduction
The battery must be fully charged before each use. See Page 82 for information on battery
maintenance.
Power-ON
1. Press the ON/OFF key to turn the SM-7204 monitor On. The unit will turn on and the Splash
Screen will appear.
Note: Before taking a sample fully charge battery for 3 hours and allow monitor to run for at least two
minutes for the SM-7204 to equilibrate and stabilize. Then perform an auto zero to set baseline. See
Page 48 for detailed procedure.
Power-OFF
1. The instrument will not power off when in active sampling mode. To power down the
instrument, stop sampling then press the power off button.
Turning the SM-7204 ON and OFF
SM-7204