USER’S GUIDE HAZ-DUST IV™ REAL-TIME PERSONAL DUST MONITOR MODEL HD-1004 DOC# HD40706 Environmental Devices Corporation 4 Wilder Drive Bldg. # 15 Plaistow, NH 03865 Phone: (603) 378-2112 (800) 234-2589 Fax: (603) 378-2113 E-mail: customerservice@hazdust.com E-mail: technicalsupport@hazdust.com Website: www.hazdust.
™ Haz-Dust IV User’s Guide
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. 1997 Environmental Devices Corporation.
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.
Warranty Environmental Devices Corporation (EDC) warrants only non-expendable products, parts and labor, for a period of one year from date of shipment to the original purchaser. The warranty covers only product parts and labor that failed due to normal operation of the instrument and not due to abuse or negligence. The product will be delivered in accordance to its published specifications and free from defects in materials or workmanship.
Table of Contents Chapter 1 - Introduction to the Haz-Dust IV........................................................................................................ 1-1 Introduction to the Haz-Dust IV......................................................................................................................... 1-2 Overview of the Haz-Dust IV ............................................................................................................................
Appendix B - Particle Size Selections.....................................................................................................................B-1 Appendix C - Glossary of Terms............................................................................................................................C-1 Appendix D - Haz-Dust IV Accessories .................................................................................................................
Chapter 1 - Introduction to the Haz-Dust IV
Chapter 1 Introduction to the Haz-Dust IV Chapter Overview Introduction This chapter gives a complete overview of the Haz-Dust IV. This chapter: • Introduces and describes Haz-Dust IV. • Explains operating principles of the Haz-Dust IV. • Identifies features, specifications and components of Haz-Dust IV. In this chapter This chapter contains the following topics.
Introduction to the Haz-Dust IV Introduction The Haz-Dust IV is the worlds 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. Figure 1-2. Diagram of the Haz-Dust IV. Figure 1-3. Diagram showing components used for both the traditional and real-time dust monitoring methods.
Introduction to the Haz-Dust IV, Continued Comparison of methods 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.
Overview of the Haz-Dust IV Ease of use • The user controls all functionality and programming using menus displayed on a high contrast LCD. • The compact unit attaches to the workers waist allowing for flexibility during on-site monitoring. • A detached sensor head easily attaches to the worker for true breathing zone measurements. • A user adjustable alarm can be preset to alert the worker of approaching threshold limits.
Overview of the Haz-Dust IV, Continued DustComm Pro Software The Haz-Dust IV comes equipped with DustComm Pro software, which allows internally stored 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.
Features Introduction The Haz-Dust IV 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. • Stored data by location code. Functional features • Calibration to NIOSH methods for lung damaging particles.
Specifications Introduction The Haz-Dust IV meets the following specifications. SPECIFICATION Calibration Accuracy Precision Sensing range Particle size range Recording time Flow rate Memory Locations Output Operating temperature Humidity range Battery Battery life Charging time Size Weight RANGE NIOSH 0600 with SAE Test Dust + 10% 0.02 mg/m3 0.01 to 200 mg/m3 0.1 to 10 µm Respirable 0.1 to 50 µm Thoracic 0.1 to 100 µm Inhalable (IOM) 1 second, 1 minute and 10 minute averages 1.5 to 2.
Components Components The following components ship with the Haz-Dust IV. Haz-Dust IV Monitor. Battery charger. Trimming tool. Detachable Thoracic sampling inlet. Opaque filter cassette holder. Haz-Dust IV Multi Media CD-Rom Including: DustComm Pro Software and the Instruction Manual. • RS232 9-pin serial cable (female to male). • Zeroing filter. • Durable carrying case.
Chapter 2 - Operating Parameters of the Haz-Dust IV
Chapter 2 Operating Parameters of the Haz-Dust IV Chapter Overview Introduction This chapter describes the steps involved in starting the Haz-Dust IV and configuring its operating parameters. In this chapter This chapter contains the following topics. Topic Turning the Haz-Dust IV on and off. Using the Menu. Setting the Alarm. Setting the Date and Time. Clearing the Memory.
Turning the Haz-Dust IV On and Off Introduction Power can be supplied to the Haz-Dust IV either from its internal battery or from an AC power source. Note: THE BATTERY MUST BE FULLY CHARGED before each use. See page 58 for information on battery maintenance. Power-On Press the ON/OFF key to turn the Haz-Dust IV monitor on. Result: The unit will turn on and the Title Screen will appear. Note: Allow at least two minutes for the Haz-Dust IV to equilibrate and stabilize.
Using the Menu Introduction The Haz-Dust IV menu appears on the 4x20-character liquid crystal display (LCD). Note: See Appendix A for menu option flow charts. Accessing the main menu Press ENTER from the Title Screen to access the Main Menu. Using the menu The Haz-Dust IV is operated using the following menu selections. Selection <→> <↑> <↓> Function Turns the Haz-Dust IV on and off. Activates the selected option. Selection Arrow. Indicates the selected menu option.
Setting the Alarm Introduction An audible alarm can be set to alert the worker of approaching threshold limits. Alarm settings The concentration level must be set to the defined agency standard for the particulate type being sampled. Note: See Appendix B for a listing of the most common dust particulates and their corresponding concentration levels. Using the alarm Follow the steps in the table below to set the alarm level. Step 1 2 3 4 Action Select Special Functions from the Main Menu.
Setting the Date and Time Introduction The date and time are pre-set by the factory to Eastern Standard Time and are maintained by an internal clock. It may be necessary to change the date and time due to local time zones or daylight savings time. Note: It is important that the system date and time are correct for accurate record keeping. Date and Time settings Time is entered and displayed in military time format. Date is entered and displayed in European format (i.e., MON. 17-DEC-04).
Clearing the Memory Introduction The memory of the Haz-Dust IV can be cleared at any time. Note: All data points in all locations will be deleted from memory. Clearing memory Follow the steps in the table below to clear the memory of the Haz-Dust IV. Step 1 2 3 4 Action Select Special Functions from the Main Menu. Select System Options. Select Erase Memory. Select Yes to clear memory. Note: Selecting No will cancel the process without clearing memory.
Chapter 3 - Operating the Haz-Dust IV
Chapter 3 Operating the Haz-Dust IV Chapter Overview Introduction This chapter describes and diagrams operation procedures of the Haz-Dust IV. In this chapter This chapter contains the following topics.
Selecting The Particle Size Introduction The inlet system of the Haz-Dust IV can be configured to sample Thoracic, Respirable, or Inhalable dust particulates. The following pages detail the selection process for each of these particle types. Inlets The table below lists the particulate type, agency standard, and required inlets.
Thoracic Dust Particulates Thoracic Follow the steps in the table below to select Thoracic dust particulates. Step Action 1 Select Special Functions from the Main Menu. 2 Select System Options. 3 Select Extended Options. 4 Select Size Select, then Select. 5 Select Thoracic. 6 7 8 9 Result: The Main Menu is displayed. Thread the Thoracic sampling inlet into Haz-Dust IV sensor. Note: The sampling inlet contains plastic threads be careful not to cross threads.
Respirable Dust Particulates Respirable Follow the steps in the table below to select Respirable dust particulates. Step Action 1 Select Special Functions from the Main Menu. 2 Select System Options. 3 Select Extended Options. 4 Select Size Select, then Select. 5 Select Respirable. 6 7 8 9 Result: The Main Menu is displayed. Screw in GS cyclone adapter p/n GSA-202 into bottom of sensor. Insert the GS-Cyclone into the GSA-202.
Inhalable Dust Particulates Inhalable When using the Haz-Dust IV monitor for Inhalable sampling a suitable entry must be used. The SKC IOM Adapter is designed to allow the use of the front half of an IOM cassette and lock ring as an Inhalable entry to the Haz-Dust IV sensing chamber. Selecting Inhalable Follow the steps in the table below to select Inhalable dust particulates. Step 1 2 3 4 5 6 Action Select Special Functions from the Main Menu. Select System Options. Select Extended Options.
Inhalable Dust Particulates, Continued 7 Follow the steps in the table below to prepare the IOM sampling adapter for use with the Haz-Dust IV. Step Action 1 Insert rubber washer into IOM cassette front. Place into sensor and screw the IOM front plate over it into the sensor. 2 Attach the cassette grid to the filter ring. 3 Push end cover over cassette grid and filter ring. See figure 3.5 for visual aid. 8 9 Attach the air intake tubing to the end cover.
Auto-Zero Introduction Auto-Zero sets the measurement baseline of the Haz-Dust IV to zero mg/m3. The Auto-Zero check should take place prior to beginning a new set of measurements. Auto-Zero Follow the steps in the table below to Auto-Zero the Haz-Dust IV. Note: The battery should be fully charged before beginning the Auto-Zero process. Step 1 Action Be sure the appropriate sampling inlet is attached to the sensor head of the Haz-Dust IV using the table below. If sampling...
Auto-Zero, Continued 2 Insert the Zeroing Filter using the table below. If Sampling... Then... Thoracic Particulates Insert the zeroing filter into the (Figure 3.7a) Thoracic sampling inlet. Inhalable Particulates Insert the zeroing filter (p/n ZA(Figure 3.7b) 202A) into the front of the IOM front plate refers to figure 3.7b. Respirable Particulates Insert the zeroing filter into the (Figure 3.7c) bottom of the GSA-202. GS-Cyclone adapter. Figure 3.
Auto-Zero, Continued 3 4 Select Auto Zero from the Main Menu. Select Auto-Zero. Result: The Auto-Zeroing screen appears briefly. Note: Wait 50 Seconds. The unit automatically executes the steps necessary to reestablish the baseline. 5 Result: The Main Menu is displayed when the auto-zero process is complete. Remove the zeroing filter and begin the sampling process described on page 3-10.
Sampling Introduction Once you have selected a Particle Size and completed the Auto-Zero process the Haz-Dust IV is ready to begin sampling. Conditions The following conditions must be met before starting the sampling process. Condition... The correct particle size must be selected. The correct sampling inlet must be attached. The correct date and time must be set. The Auto-Zero process must be complete. The alarm level must be set if sampling with the alarm feature.
Sampling, Continued 4 Choose the security level using the table below. To... Select... Use the security feature Yes Bypass the Security feature No, then, go to step 6. 5 Enter the Security Code of 1209 using the table below. To... Press... Increase the value of the selected < ↑ > digit Decrease the value of the selected < ↓ > digit Select the next digit ENTER Result: When all digits have been entered the LCD will display the Sample Record Menu. Attach the belt clip to belt of the worker.
Sampling, Continued A B L D T C D o a i o a c t m n t : e : e : c : a R e 0 T 0 T c 0 1 U E 7 : 2 2 . o r d E 1 3 7 X 2 : 5 S P O S - J A 3 8 m g c r e U R E N - 9 7 / m 3 e n C Figure 3.10. The Data Record Screen. The table below describes the diagram details. Detail Explanation A Indicates Location Code of data being sampled. A record should be kept of the site that corresponds to each location code. B C Ending the Sampling process Note: See page 3-13 for explanation of location codes.
Custom Correction Factor on HD-1004 Before a SCALE factor can be entered, a gravimetric result must be obtained from the filter contained behind the sensing head. The filter must be preweighed. Step 1: Go to Special Functions option by pressing either the down button or the up button until the arrow is opposite Special Functions. Press ENTER button. Step 2: Scroll arrow to System Options option and press the ENTER button. Step 3: Scroll arrow to Extended Options and press ENTER button.
Location Codes Introduction The Haz-Dust IV assigns a location code to each sampling sequence. The active location is indicated in the Data Record Screen (figure 3.10). Maximum location codes The Haz-Dust III can store a total of 21,500 data points, which can be distributed into a maximum of 999 locations. Assigning location codes The location code assigned to the site is determined by the memory storage type selected in step number three of the sampling process (page 3-10).
Reviewing Stored Data Introduction The Haz-Dust IV provides extensive capabilities for reviewing internally stored data and statistics on the LCD. LCD display The following information is displayed on the LCD. Display Description Date Date of sampling. Start Time sampling began. Stop Time sampling was terminated. Time Time of occurrence of reported statistic. MAXIMUM Sample Highest concentration of dust particles. MINIMUM Sample Lowest concentration of dust particles. T.W.A.
Reviewing Stored Data, Continued 5 6 7 Enter the desired Location in the Location Select Screen using the table below (figure 3-11). To... Press... Increase the value of the selected digit. < ↑ > Decrease the value of the selected digit. < ↓ > Select the next digit or field. ENTER Press ENTER when the desired location code has been entered. Result: The Scanning Memory Screen displays.
Chapter 4 – DustComm Pro V.1.
Introduction to the DustComm Software Introduction DustComm is a powerful and flexible Windows application software package designed for use with the Haz-Dust Particulate Monitoring Equipment. DustComm is both communications software that enables stored project data to be downloaded to a PC, and a data manipulation tool, enabling detailed analysis and reporting of sampled data. Spreadsheet applications DustComm easily translates data into spreadsheet ASCII text files.
Installing DustComm Introduction DustComm installation is easy and quick, the entire process should take less than 5 minutes. Minimum system requirements Windows ME or Higher. 4 MB available disk space. 8 MB RAM. Software installation Follow the steps in the table below to install DustComm. Note: It is assumed that the CD-Rom Drive is the “D” Drive. Substitute D with the appropriate drive letter if necessary. Step 1 2 3 4 5 6 7 Action Start Windows. Close all open applications.
Loading the DustComm Software Windows ME Follow the steps in the table below to load the DustComm software if using Windows ME. Step 1 2 3 4 Windows NT, 2000 & XP Action Select the Start Menu. Select Programs. Select the folder EDC DustComm Pro 1.2 Select DustComm Pro 1.2 Follow the steps in the table below to load the DustComm Software if using Windows NT, 2000 & XP. Step 1 Action Double Click on the icon on your desktop.
Menu Selections Introduction Figures 3 through 5 show each of the DustComm menu options. Note: If a menu option is displayed in light type it is not available during the current task. Opens Saved Files Saves Current Open Files if changed Saves Current Open Files, that have not yet been saved Closes Open Files Saves Current Open Files as a text file, so that you can open the data up in a spreadsheet Exits the entire Program Figure 3. File Menu Options.
File Menu Commands Introduction Use the File Menu option to open, save, print, close and export sampled data. You can also use the File Menu to Exit the DustComm Pro Software Notes: • Data is sorted by time collected. • Data points are reported in mg/m3. Opening an existing project folder Follow the steps in the table below to retrieve stored project data. NOTE: A sample .dcm file is preloaded for review of software options. Step 1 2 3 Action Select File. Select Open.
File Menu Commands, Continued Exit software Exit Communication Software in one of two ways. Option number 1 2 Action 1. Select File. 2. Select Exit. Or Single click on the “X” in the upper right hand corner of the screen.
Downloading Data Introduction Internally stored data can be downloaded to DustComm for detailed analysis. Downloading data The three major steps used to download data from the EDC dust-monitoring unit to a PC are listed below and detailed in the next few pages. 1. Connect the cable. 2. Prepare the PC for data transmission. 3. Prepare the EDC dust-monitoring unit for data transmission. Connect the cable Follow the steps in the table below to connect the cable for data transmission.
Downloading Data, Continued Preparing the unit. Follow the steps in the table below to prepare the EDC unit for data transmission. Step 1 2 3 4 Action Select Playback or Review Data (depending on your instrument) from the Main Menu on the unit. Select Download. Select To Dust Data Collector. Press ENTER. Result: The Transmitting window appears. 5 Note: Bars on the PC screen should increase as the unit downloads. When the transmission is complete...
DustComm Pro Window Introduction Each section of the DustComm Pro Window will explain a different part of the statistics. Location Information The Location information will give you general details about the downloading statistics. Such as date, time, start/stop time, data rate, duration, how many samples where downloaded and the unit. There is also box so that you can name the location and a shortcut to type in any notes you would like to add. Figure 9.
DustComm Pro Window, Continued Dataset Scale Factor The dataset scale factor section of the DustComm Pro Window, is so that you can adjust the scale to be equal to your specific type of dust. You can read more about adjusting the scale factor on page15. Figure 11. Dataset scale factor section of the DustComm Pro Window. Quick Plot The Quick Plot graph shows you a miniature version of the Full Plot.
DustComm Pro Window, Continued Location Data The location data section shows you the milligrams per cubic meter you sampled for and the times that they were sampled at. Figure 13. Location Data on the DustComm Pro Window.
Translating Data to an ASCII Text File Introduction Project Data must be translated into ASCII text format before it can be read by a spreadsheet application. Translating data Follow the steps in the table below to Translate Project Data into ASCII Text format. Note: A Project Folder must be open to access the translate feature. Step 1 2 3 4 6 Action Select File from the Main Menu. Select Export. An “Export Locations” Window will appear.
Generating a Plot Introduction A graph can be plotted with full plot located at the bottom of the DustComm Pro Window. Generating a graph Follow the steps in the table below to generate a graph using the DustComm Plot menu selections. Step 1 2 3 Action Select Plot. Select Review. This option is for graphs that have already been saved. Note: For new statistics click on the “Full Plot” Icon on the DustComm Pro Window. The result is graph will be plotted to the screen (see figure 15 below).
Data Plot Menu Selections At the top of the data plot will be a button bar. Below is an explanation of what each button does. Introduction 1 2 3 4 5 6 Number 1 2 3 4 5 6 7 8 9 10 11 7 8 9 10 11 Function Saves plotted information as a DustComm Pro Chart (*.dcc). Copies plot to a bitmap file. Edits the title of the plot. Page Setup Properties. Prints the current plot. Zooms into plot. By Highlighting from point to point that you want zoomed in on. Returns to full screen of plot.
Data Plot Menu Selections, Continued 1 2 3 4 5 6 7 Number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 8 9 10 11 12 13 14 15 16 17 18 19 20 Function Pointer tool. Insert Squares. Insert Ovals. Insert arrows. Insert arched lines. Insert a picture. Choose the size of your picture and then right click on the box and select properties. Select the picture tab and select picture. The picture you chose will appear in the box. Insert a text box. Insert a callouts with text.
Editing Title Introduction A customized title can be added to a graph before printing. Editing the title Follow the steps in the table below to add a title to the graph. Step 1 2 3 4 Action Have location plotted already. Select the Edit Title button on the menu bar. A Window will appear where you can edit the title for what you would like its name to be. Select OK when the correct title is in the box. Result: The graph will be created with the new caption. Figure 16. Edit Title Window.
Applying a Correction Factor Introduction A correction factor can be applied to the data collected with the EDC unit to account for variances in gravimetric readings. Calculating a correction factor The correction factor is calculated by dividing the Gravimetric reading by the EDC unit reading. Applying a correction factor Follow the steps in the table below to apply a correction factor to all data points in the current project folder.
Inability to Download Data to PC Introduction If DustComm Software installs properly but downloading instrument to computer is unsuccessful try the following: • Ensure that the RS232 cable connectors from the PC are tightly screwed into place. • Ensure that the communications settings are set appropriately in the Download Properties screen of the DustComm program. Select Unit, Properties to access this dialog box. The communications port must be set to the appropriate Com Port used on the PC.
Chapter 5 - Maintenance
Chapter 5 Maintenance Chapter Overview Introduction This chapter covers the maintenance procedures for the Haz-Dust IV. In this chapter This chapter contains the following topics. Topic Checking the Calibration Span. Checking the Flow Rate. Adjusting the Flow Rate. Battery Maintenance. Cleaning the Sensor Optics.
Checking the Calibration Span Introduction The Calibration Reference is a light scattering device that provides a constant value (termed a “k” factor). The Calibration Reference should be used as a reference to check factory calibration span of the Haz-Dust IV. When to check the calibration span The calibration span should be checked under the following conditions: • Once a month with normal usage. • If the Haz-Dust IV is dropped or otherwise damaged.
Checking the Calibration Span, Continued Checking Calibration Span Follow the steps in the table below to check the Calibration Span of the HazDust IV. Note: Failure to follow this procedure in its entirety may cause an incorrect “k” value reading. Step 1 2 3 4 Action Insert the Thoracic sampling inlet into the sensor head of the HazDust IV. Attach the filter cassette to the sensor of the Haz-Dust IV. Attach the air intake hose to the filter cassette.
Checking the Calibration Span, Continued 6 7 8 9 10 11 Perform the Auto-Zero process using the steps in the table below. Step Action 6-1 Insert the zeroing filter into the Thoracic sampling inlet. 6-2 Select Special Functions from the Main Menu. 6-3 Select System Options. 6-4 Select Extended Options. 6-5 Select Auto-Zero. Result: The Auto-Zeroing screen appears briefly. 6-6 Select Auto-Zero. Results: • The Auto-Zeroing screen appears during the autozero process.
Checking the Flow Rate Introduction It is good technique to check the flow rate every time a new gravimetric filter is used for sampling. Checking the flow rate Use the steps in the table below to check the flow rate. Notes: • If sampling Thoracic or Inhalable particulates make sure the Thoracic sampling inlet is attached to the sensor head. • If sampling Respirable particulates make sure the Respirable sampling inlet is attached to the sensor head.
Checking the Flow Rate, Continued 2 Activate the internal sampling pump using the steps below. Step 1 2 3 4 5 6 3 Action Select Sample/Record from the Main Menu Select 1 Second. Select Overwrite. Select Yes. Select No. Select Sample/Rec and allow the Haz-Dust IV to run for at least two minutes to stabilize. Observe the flow rate on your air flow calibrator. If... The flow rate is 2.75 LPM. Then... The flow rate is properly calibrated.
Adjusting the Flow Rate Introduction The flow rate must be adjusted when it does not equal: • 2.75 LPM for 25-mm cyclone Respirable Inlet • 2.0 LPM for Thoracic Inlet • 2.0 LPM for Inhalable Inlet Adjusting the flow rate Follow the steps in the table below to adjust the flow rate. 1 2 Locate the adjustment screw on the bottom of the Haz-Dust IV next to the charging jack. Use the flow adjustment screw to adjust the flow rate. To...
Battery Maintenance Introduction The battery pack is a 6.0 V NiMH rechargeable battery that can hold a charge for up to 8 hours. It is important to check the battery periodically and recharge when necessary. Checking the Battery The battery status can be checked using the menu options on the Haz-Dust IV. Use the following menu options to check the battery. Step 1 2 3 4 Action Select Special Functions from the Main Menu. Select Systems Options. Select Extended Options. Select Battery Status.
Battery Maintenance, Continued Recharging the battery Follow the steps in the table below to recharge the battery using the supplied charger. Note: If the battery is low the sampling process will terminate and the low battery screen will display. Step 1 2 Action Plug the battery charger into an electrical outlet. Plug the battery charger into the battery charge jack on the back of the battery plate. Results: • The battery charge begins.
Battery Maintenance, Continued Removing and replacing the battery pack Removing the battery The battery pack can be removed and replaced whenever necessary. Note: The battery of the Haz-Dust IV can be recharged while either inside or outside of the instrument. Follow the steps in the table below to remove the battery pack. Step 1 2 3 Action Remove the two thumbscrews from the back plate of the Haz-Dust IV. Note: Screws are located under the waist belt. Slide the battery plate out of the unit.
Battery Maintenance, Continued Reinstalling the battery Follow the steps in the table below to reinstall the battery pack. Step 2 3 4 Action Plug the nylon connector into its mating plug. Slide the battery in the appropriate orientation into the battery cavity of the unit. Insert the two thumbscrews to secure the battery pack in place.
Cleaning the Sensor Optics Introduction It is important to keep the sensor optics of the Haz-Dust IV clean to ensure the integrity of the optical sensor. The sensor optics need to be checked every 48 hours when used in a 2 to 3 mg/m3 T.W.A. environment, and on a weekly or monthly basis in less contaminated locations. Cleaning the Sensor Optics Follow the steps in the table below to clean the sensor optics. Figure 5-2. Picture of the cleaning kit.
Cleaning the Sensor Optics, Continued Step 1 2 3 4 Action Remove the three thumbscrews from the sensor cover. Remove the sensor cover. Remove the sampling head from the bottom of the sensor. Inspect the sensor cover for residual dust. Note: Use one of the following methods to clean the surface. • Blow the dust away with low pressure air, or, • Wipe with a soft lint-free cloth. 5 Inspect the glass lens covers for dust. Note: Use one of the following methods to clean the glass lens.
Cleaning the Sensor Optics, Continued Figure 5-3. Removing the sensor cover. Figure 5-4. Dust being removed with low pressure air. Figure 5-5. Isopropyl alcohol being applied to cotton swab. Figure 5-6. Sensor head being cleaned with cotton swab.
Appendix
Appendix A NIOSH/OSHA Particulate Air Monitoring Reference Dust/Hazard alpha-Alumina (Respirable fraction) alpha-Alumina (Total dust) Aluminum, Pyro powders Aluminum (Respirable fraction) Ammonium nitrate Ammonium sulfamate (Respirable dust) Ammonium sulfamate (Total dust) Ammonium sulfamate (Total dust) Bismuth telluride, Se-Doped Bismuth telluride, Undoped (Respirable dust) Bismuth telluride, Undoped (Total dust) Boron oxide (Total dust) Boron oxide (Total dust) (Particulates, Total) Carbon black Carbon
NIOSH/OSHA Particulate Air Monitoring Reference, Continued Dust/Hazard Crag herbicide (Respirable dust) Crag herbicide (Total dust) Crag herbicide (Total dust) Cresol, All isomers Cresol, All isomers Cyanide (as Cn) Fluorides (Aerosol & Gas) Glass, Fibrous dust Glycerin mist (Particulates) Glycerin mist (Respirable) Glycerin mist (Total dust) Grain dust (Oats, Wheat & Barely) Graphite, Synthetic (Respirable dust) Graphite, Synthetic (Total dust) Iodine (Particulates) Kaolin (Respirable dust) Kaolin (Total
NIOSH/OSHA Particulate Air Monitoring Reference, Continued Dust/Hazard Picloram (Tordon), Respirable dust Picloram (Tordon), Total dust Plaster of Paris (see Dust, Respirable nuisance) Portland cement (Respirable dust) Portland cement (Total dust) Respirable nuisance Respirable nuisance (Particulates) Total nuisance Total nuisance (Particulates) Rouge (Respirable dust) Rouge (Total dust) Silica, Amorphous Silica, Crystalline tripoli, Respirable dust Silicon carbide (Respirable dust) Silicon carbide (Total
Appendix B Particle Size Selections The tables below show the particle size cut point for Thoracic, Inhalable, and Respirable dust particles. Introduction Inhalable Particle Aerodynamic Diameter (µm) 0 1 2 5 10 20 30 40 50 100 Inhalable Particulate Mass (IPM) (%) 100 97 94 87 77 65 58 54.5 52.
Appendix C Glossary of Terms Term µm ARD Inhalable Dust Particulates LPM mg/m3 NIOSH OSHA Respirable Dust Particulates STEL Thoracic Particulates TWA Definition/Standard Micron, 1/1000 of a meter. Arizona Road Dust Particulates having a 50% cut point at 100µm. Liters per minute. Milligrams per cubic meter. National Institute of Occupational Safety & Health Occupational Safety & Health Administration. Particulates having a 50% cut point at 3.5µm. Short-term exposure level.
Appendix D Haz-Dust IV Accessories Overview Introduction Accessories may be purchased separately for the Haz-Dust IV. Accessory and part number Use the part number from the table below to order Haz-Dust IV accessories. Accessory 110 V 220 V 37 mm Opaque Filter Cassette Blanks 5.
