HAZ-SCANNER™ Air Station Monitor
Contents
1. lock into place 7 Place the debris screen points down into the cone The screen prevents large bits of debris from blocking the funnel hole 8 To prevent fraying or cutting of the cable where it is exposed to weather it is important that you secure it so it doesn t whip about in the wind Use cable clips or weather resistant cable ties to secure the cable Place clips or ties approximately every 3 to 5 feet 1 to 1 6 m Do not use metal staples or a staple gun to secure cable Metal staples especially when installed with a staple gun tend to cut the cable 9 If the cable length supplied with the rain gauge is not long enough for your purpose you may extend it The maximum length of cable is 900 feet 270 m 4 0 CALIBRATION NOTE The rain gauge is calibrated for each 0 01 or 0 25 mm On the 260 7852 an Optional 0 2 mm adapter is provided Allowing you to easily change th calibration from 0 25 mm to 0 20 mm lf desired REFER To Appendix A at the end or the Manual to change to the 0 2 mm adapter The rain gauge is calibrated at the factory so the bucket tips for each 0 01 or 0 254 mm of rainfall To adjust the calibration slightly use a 3 16 5 mm wrench to rotate the adjustment screws which are located underneath the bucket The adjustment guide embossed in the platform shows how far you must rotate both screws in turn to effect a 1 and a 2 change The funnel size is 6 5 in diameter therefore 0 01 of rainf2. EPA document 520 1 89 010 Radon presents a significant health risk due to its ability to cause lung cancer Radon in water is released into household air during water use Though radon in soil gas is the dominant source of radon in indoor air water can be the dominant source in cases where the radon content of water is very high The cancer risk for radon in water can be relatively high compared to other carcinogenic contaminants of groundwater The EPA has proposed a drinking water standard for radon of 300 picoCuries per liter pCi l A radon in water concentration of 300 pCi l presents a lifetime 70 yr cancer risk of 2 in 10 000 In homes served by wells groundwater can also contribute especially during showering and washing clothes Typically a groundwater radon concentration of 10 000 pCi I will contribute 1 pCi l to the radon concentration of household air Blumenthal M S 1988 Radon as an Environmental Hazard in Wisconsin A Basic Guide Wisconsin Medical Journal Vol 87 May pp 17 20 Our screening method follows EPA recommendations where possible Since radon originates in the ground concentrations are most likely to be elevated in the basement or on the first floor of a dwelling If you have a basement then we will place our detector away from external walls and at least 30 above the basement floor so as to minimize air currents otherwise we will place it in a comparable location in a first floor room The meter must be
3. EPAS parameters that appear in this report is discussed in detail below Statistical summaries of the data collected are provided as an integral part of the program and allow for data to be displayed graphically where applicable Since it is difficult to display roughly 1500 data points at a time an averaging technique is used to compress several minutes into one data point This is why the first data point on a graph may not necessarily have the same value as that displayed after the first averaging period The American Society of Heating Refrigerating and Air Conditioning Engineers ASHRAE has formulated a number of the indoor air quality standards and recommendations The upper and lower limits used in this report are in many cases derived from the most recent ASHRAE standard ASHRAE 62 1989 Limits associated with outdoor air quality come from the Environmental Protection Agency s National Ambient Air Quality Standard EPA NAAQS and the World Health Organization WHO EOS 43 Haz Scanner Manual 1109 Atomic Radiation If you live in the vicinity of a nuclear power plant or other industrial facility that processes radioactive materials the readings from the Digilert may be of interest to you A simple Geiger tube based instrument is incapable of determining the specific radionuclide that is causing the elevated radiation level however a CPM counts per minute that is significantly higher than a normal background level can alert you to
4. a small amount of Impactor grease P N IG 105 Remove any excess before placing the impactor back into the sensor The PM sensor has a self zeroing feature and cycles on every 30 minutes You can tell when this is happening because the pump will sound different The self zeroing operation takes a little under one minute During this clean air purge the sensor stores the last valid reading Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 16 Haz Scanner Manual 1109 Fig 19 The Impactor Fig 20 Removing the Impactor Carbon Dioxide Sensor The CO2 sensor is designed for measuring indoor air quality and will not give reliable data if the temperature is below 32 F If you wish to measure outdoor CO2 concentration keep the outdoor temperature in mind Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 17 Haz Scanner Manual Chapter 2 Haz Scanner Tutorial Introduction This tutorial is designed to teach you the basic operations involved in using the Haz Scanner After completing these exercises you will be able to e connect the system to a computer e calibrate the gas sensors e collect a data set and e generate a report including graphs and explanatory text To complete this set of exercises you will need e the Haz Scanner EPAS e Gas
5. are connected at any given time a NOTE For data from any given sensor to be collected by the system the sensor must be either connected or turned on before starting the Haz Scanner system or you must press the sense button on the display panel You cannot connect and sense new sensors while datalogging The table below lists the sensors that may be included in your Haz Scanner The status column explains what you will need to do in order for data to be collected from each sensor Sensor Status Temperature Relative Humidity Always ON Carbon Dioxide Always ON Carbon Monoxide Always ON Nitrogen Dioxide Always ON Ozone Always ON Oxygen Always ON Sulfur Dioxide Always ON Voc Always ON Wind Speed Wind Direction Connect to turn on ELF Radiation Connect to turn on Ionizing Radiation Connect to turn on Sound Level Connect to turn on Solar Irradiance Connect to turn on Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 fax 603 378 2113 www hazscanner com There is very little you need to know about the datalogger in terms of its operation You won t have to set up the sensors on any specific channels or provide any technical data about the sensors The logger is self configuring and all relevant calibration data and other technical specifications are stored in battery backed memory before each unit is shipped Turning the system on and off has no effect on this data stored in
6. are people with arteriosclerosis and those who smoke cigarettes The National Ambient Air Quality Standard EPA NAAQS places an upper limit of 9 ppm of CO for any eight hour period and a limit of 35 ppm for any one hour period EOS Hydrocarbons Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 44 Haz Scanner Manual 1109 Hydrocarbons make up a broad spectrum of organic chemical compounds containing only hydrogen and carbon atoms These atoms can combine in many different configurations to produce aldehydes ketones acids alcohols esters ethers phenols ethylenes and benzenes and many other compounds Natural sources of hydrocarbons include oil seeps biological decomposition and volatile plant products Sources include petroleum refineries chemical manufacturers industrial and commercial users of solvents oil and gas distributors furniture manufacturers and transportation sources Because of loss through evaporation and incomplete combustion light duty motor vehicles cars and small trucks contribute 75 of the total hydrocarbon load from transportation sources Urban air pollution contains hundreds of hydrocarbons and their derivatives over 400 are present in auto exhaust alone Peak concentrations of hydrocarbons are related to traffic patterns they rise and fall as large numbers of vehicles bring motorists to and from work in the morni
7. concentration to 50 micrograms cubic meter ug m3 A one time 24 hour primary and secondary standard of 150 ug m3 is also indicated OSHA standards for particulates not otherwise regulated define a Time Weighted Average TWA of 15 mg m3 for total dust and 5 mg m3 for the fraction of that dust that is respirable Particles inhaled into the lungs are irritants Those larger than 2 5 micrometers in diameter can be removed by coughing Smaller particles move deep into the lungs where they can contribute to development of chronic bronchitis and make us more vulnerable to bacterial and viral bronchitis The effect is more severe for children people who smoke cigarettes and those whose lung function is already impaired Substances many of them toxic can also collect on the surfaces of particles Once the particles are inhaled those toxic substances can be absorbed directly into our bodies The longer a particle remains in our lungs the more likely this is to happen Substances of particular concern include sulfur oxides polycyclic aromatic hydrocarbons PAH and heavy metals like lead cadmium zinc and mercury Some of these substances are known carcinogens Sound NIOSH limits for exposure to excess noise are 85 dB A over 8 hours and 115 dB A maximum Permissible Exposure Level PEL for continuous noise The exchange rate is 5 dB A OSHA limits for noise are 90 dB A over 8 hours and 115 dB A maximum PEL for continuous noise The excha
8. in place for 24 hours before a reliable reading can be made Measurements should be made under closed house conditions that is with a minimum of outdoor ventilation This is the natural state of houses in New England in the winter so we suggest that radon testing be done during the winter By placing the sensor in the basement and by doing the screening under closed house conditions we should get the worst case radon scenario Floors above the basement are usually found to have a concentration that is 2 3 times lower than that found in the basement Normal household ventilation can reduce radon levels An indoor air radon concentration of 4pCi l has been chosen by the EPA as a technically achievable goal Any result above 4 pCi L may require further action to reduce exposure Additional measurements including measurements taken on the first floor of the home are always the next step in radon monitoring In general follow these EPA guidelines 4 20 pCi L take a measurement every season for a year reduce concentration within several years 20 200 pCi L take multiple measurements over a three month period reduce concentration within several months e 200 pCi L and above take immediate steps to reduce exposure For more information Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 49 Haz Scanner Manual 1109 Contact the EPA or
9. sensor exhibits high accuracy and repeatability The relative humidity sensor utilizes a capacitative effect The capacitance of the sensor changes proportionally with relative humidity The resulting voltage is converted to a 4 20 mA signal that is proportional to relative humidity Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 51 Haz Scanner Manual 1109 The atomic radiation sensor is a simple Geiger counter that responds to alpha beta and gamma radiation Alpha radiation is easily blocked so care must be taken that nothing comes between the air being measured and the mica detection window When an ionizing particle passes through the window it is detected by a Geiger Mueller GM tube a cylindrical tube with a sealed gas and a thin central wire that is held at a high voltage When radiation interacts with the tube it will produce an energetic electron that is then counted The output is the number of electrons detected over a period of one minute Extremely low frequency ELF radiation is radiation generated by the electromagnetic spectrum between 0 and 50KHz Electric motors power lines and CRT tubes commonly emit this type of radiation A magnetic flux gate produces a voltage output that is proportional to the amount of radiation detected The wind direction sensor utilizes a potentiometer whose value changes as the wind direction changes T
10. sensors have a gas scrubber to zero the sensors e acomputer with the HazComm software pre installed e a box of matches e a washcloth Connecting the HazComm Software to the Computer It doesn t matter at what point in this process you turn on the Haz Scanner or the computer you can make the connection first or you can connect the two devices when either or both of them are on If the Haz Scanner is off turn it on by pressing the Power red I O button switch start button the power light on the Haz Scanner goes on then release it Power loss screen will appear press any button to continue WARNING Ensure battery is fully charged before beginning air sampling A fully charged battery will run the Haz Scanner for 8 hours depending on concentration levels and alarm conditions To provide longer run time plug Haz Scanner into battery charger A For best results turn on the Haz Scanner at least 1 2 hour prior to beginning this tutorial 1 Connect the serial communications cable to the RS 232 port on the left side panel of the Haz Scanner to a serial port on your computer On a PC this port may be labeled Comm 1 or something to that effect A PC will often have at least two Comm ports and you can configure the HazComm software to use either port or let the software figure it out for you If you are using a Macintosh iMac iBook a newer PowerBook or a G4 tower or some PC s may need to use a serial to USB adaptor available at
11. 0 000 Hz measurements of ELF are taken at intervals of 6 1 2 and 4 from the object being monitored Background measurements are taken before power is applied to the device For more information EMF in Your Environment Magnetic field Measurements of Everyday Electrical Devices EPA Office of Radiation and Indoor Air 402 R 92 008 Dec 1992 Questions And Answers About Electric And Magnetic Fields EMFs US EPA Office of Radiation And Indoor Air 402 R 92 009 Measuring Power frequency Fields Dept of Engineering and Public Policy Carnegie Mellon University Pittsburgh PA 15213 What Can We Conclude From Measurements of Power Frequency Fields Carnegie Mellon University Pittsburgh PA 15213 Radon Exposure Level Radon 222 is a colorless odorless tasteless radioactive gas that occurs naturally in soil rocks underground water and air It is produced by the natural breakdown radioactive decay of radium 226 in soil and rocks Breathing radon decay products increases the chance of developing lung cancer The Surgeon General s office of the U S Public Health Service and the EPA recognize that indoor radon constitutes a substantial health risk and Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 48 Haz Scanner Manual 1109 have publicly advised that most homes be tested Excerpted from Radon Measurements in Schools An Interim Report
12. AINTENANCE 6 0 TROUBLESHOOTING 6 1 Rainfall is not registering on the display or has a large error 6 2 Rainfall amount shown on the display has a small error Appendix A 2 mm Option Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Rainfall Precipitation Sensor r P N HS RS 6000 EQUIPMENT CONFIGURATION AND IDENTIFICATION The 110 WS 16RC Rain Gauge includes the following components Please make sure you have all listed components before continuing e Rain Gauge with Cable The rain gauge comes with the cone attached to the base The standard version of the rain gauge comes with a 40 12m cable Debris Screen This screen is placed into the rain gauge cone to help prevent debris from clogging the funnel hole In addition it aids in directing the flow of water into the tipping bucket at high rates of rainfall Mounting Arm The mounting arm provides easy mounting of the gauge to the tripod mast using a 1 3 4 u bolt This illustration below shows the internal components of the rain gauge many of which are referenced in this manual Base Leveling Trough lt lt A Magnet B Reed Switch Post Drain _Latch SSscreen operino Cable Slot Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Rainfall Precipitat
13. HAZ SCANNER Air Station Monitor Model EPAS USER MANUAL For Windows and Mac Computers Haz Scanner Manual 1109 Table of Contents Introduction Getting Started Typographical Conventions ecceeeesseeeeeeeeeeeeees 6 Syst m POC UIPSIGT tS sceniniai 7 Installing the SOLLW Ane ix seasssanciarstaeationentinaracanidiaaraian 7 Where tostat eer enn RE TNT ren rte ters treerereeerten oper errs ee 7 Chapter 1 Assembly Hardware SOEs e 8 Mast Assembly Permanent Installation 9 Mast Assembly Portable Installation 10 Instrumentation ciniinonimaninoninumisneininiinaiieiiets 15 Chapter 2 Haz Scanner Tutorial MiLPOCICUON cnancacaaacacnnanuananaannus 22 Connecting to the Computet 04 22 Zeroing the Gas SEMSOLs isissiseisississsessacssesaanseas 23 Collecting A Data Set scinsunsnnnnaannmanaanais 25 Uploading Da tassnreiee nonn en as 26 Generating a Report s ssssssssessisesessisensesisesessesnese 28 Chapter 3 Using the Haz Scanner Power CONS AEPatI OMS 5 sisscssscsssshossyssnsnsncceencnancete 30 Turning on the Haz Scanne ccccceeeeeees 31 Haz Scanner Display Module 0000 32 Chapter 4 Using the Haz Scanner Software Connecting to the Haz Scannne cccscssssseees 35 Preferences sa siadaadsiasaansisnudinpdonsnunchanpninsnonuainnnsnnninabeiee 35 Col ctins Datasciren Tren TESTAREA 36 Mewimg Data scxteiesnsiccanencasiansisaciuascguenobinsnavinania
14. Sunburn is not the only consequence of exposure to UV radiation Skin cancers cataracts and dam age to the immune system are caused by UV radiation Exposure to UV radiation should be mini mized The UV Sensor is comprised of the following components Shield The outer shell shields the sensor body from thermal radiation and provides a path for convection cooling of the body minimizing heating of the sensor interior It provides a cutoff ring for cosine response a level indicator and fins to aid in aligning the sensor with the sun s rays Sensor Body Houses the following components Diffuser Provides with gasket a weather tight seal and excellent cosine response Filter Provides the Erythema Action spectral response Encased in multiple hard oxide coatings the filter is stable in the presence of heat and humidity Detector Contains a semiconductor diode that with the filter responds to radia tion only in the specified wavelengths Amplifier Converts the detector current into a 0 to 2 5V signal The Solar Radiation Sensor is comprised of the following components Shield Serves the same role as in the UV Sensor Sensor Body Composed of a shield the same as that in the UV Sensor and a sensor body which contains a precision machined diffuser giving excellent cosine response a hermetically sealed silicon photodiode and an amplifier Environmental Devices Corporation 4 Wilder Drive Bldg 15 Pla
15. Tripod 11 Fig 7 The Wind Sensor in the Sensor Suitcase 12 Fig 8 Mounting the Wind Senso ccceeeee 12 Fig 9 Adjusting the Compass to North 0 13 Fig 10 Tightening the Thumbscrew cc0 13 Fig 11 Mounting the System on to the Tripod 14 Fig 12 Securing the Lid StayS csssessssneseees 14 Fig 13 Mounted Hand held Mete S cccceeeee 16 Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com Fig 15 Atomic Radiation Sensof cceeee 18 Fig 16 Attaching the Temperature RH Sensor 19 Fig 17 Connecting the T RH Sensot 006 19 Fig 18 Changing the PM Impactot ccceee 20 Fig 19 The pA CtOt an isesintatnonemammunnembeniien 21 Fig 20 Removing the Impactor cssssesessees 21 Fig 21 Haz Scanner Gas Sensors sececeeeeeeeees 24 Fig 22 Header Information Screen ccccceee 28 Fig 23 Report Options Screen ccccccseeseseeeseees 29 Fig 24 Graph Options Screem scscscscsssssssesesees 30 Fig 25 External Battery Supply ccccseseseseeees 31 Fig 26 InteliTender Battery Charger 006 31 Fig 27 Rotary ON OFF SWitch cccceeeeeeees 32 Fig 28 Haz Scanner Display Modulle 004 33 Fig 29 Haz Scanner Function KeyS ccc
16. a potentially dangerous situation The background level in New Hampshire where the Haz Scanner IAQ Monitor is manufactured is about 12 CPM The ambient level in the White Mountains of New Hampshire where radon is prevalent is closer to 40 CPM EOS Barometric Pressure There are no standards for barometric pressure Generally a trend from high to low pressure signifies that unsettled weather is approaching A trend in the opposite direction indicates fair weather is approaching EOS Carbon Dioxide Carbon dioxide CO2 is a good indicator of the rate of air exchange between the indoor and outdoor environments According to ASHRAE Standard 62 1989 an indoor concentration greater than 1000 ppm suggests that the air exchange is inadequate and incapable of maintaining good air quality The ambient outdoor concentration of CO2 is about 350 ppm While not a toxic gas high concentrations of CO2 can cause drowsiness and a stuffy air feeling High concentrations are common in older schools due to inadequate ventilation systems and perhaps overcrowding EOS Carbon Monoxide Carbon monoxide CO is a toxic odorless gas that is a fossil fuel combustion by product Primary residential sources of CO include gas stoves un vented gas and kerosene space heaters and wood stoves as well as from gas and oil furnaces and hot water heaters CO exposure is believed to contribute to and in some cases worsen heart disease Particularly vulnerable
17. ack wire to GND 4 While watching the WS 16 observation display manually tip the bucket or add a tablespoon or two of water into the funnel until the bucket tips If the rainfall amount displayed on the screen increases by the expected increment usually 0 01 or 0 254 mm each time you tip the bucket your rain gauge is working properly 5 For General Testing connect the Rain Gauge to a Counter or Ohmmeter to verify that each tip will cause a momentary switch closure Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Rainfall Precipitation Sensor rz P N HS RS 6000 3 0 INSTALLATION 3 1 Choose a Location The location of the rain gauge is very important to the successful operation of the instrument The most accurate measurements are made in relatively sheltered areas protected from gusting and turbulent winds Openings in orchards or a grove of trees offer the best exposure for the rain gauge Fences and other structures can help serve as a wind break as long as they are not too tall Generally the heights of objects near a rain gauge should be proportional to the distance away from the gauge The distance of a nearby object should be at least twice the height of the object above the gauge Keep the following in mind when choosing a location for your rain gauge The rain gauge must be level Verify using the bubble level or by po
18. all 5 44 ml of water Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Rainfall Precipitation Sensor ss P N HS RS 6000 Moving the screws in the positive direction causes the bucket to tip more times i e give a larger count for a given amount of water 544 ml of water poured into the rain gauge very slowly would be equal to 1 00 inch of rainfall or 100 tips Very slowly means at least 30 minutes for this amount of water poured into the gauge at a near constant rate 5 0 MAINTENANCE For greatest accuracy you should thoroughly clean the rain gauge at least once or twice a year 1 Disconnect the rain gauge cable from the data acquisition module 2 Separate the cone from the base 3 Use warm soapy water and a soft cloth to clean pollen dirt and other debris from the cone cone screen and bracket 4 Use a pipe cleaner to clear the funnel hole in the cone and the drain screens in the base 5 When all parts are clean rinse with clear water 6 Reattach the cone and replace the screen 7 Reconnect the rain gauge cable to the data acquisition module 6 0 TROUBLESHOOTING Before calling technical support carefully check the following troubleshooting guide You may be able to solve the problem yourself 6 1 Rainfall is not registering on the display or has a large error e Check the cable connections f
19. ceeceee 34 Fig 30 The Summary SCLEEN A assuait niatiakndade 39 Fig 31 Limit Options Screens cakurecsucunaeudestnmintins 41 Fig 32 Setting Custom int iissistelecidensdeindecssoseosane 42 Fig 33 Graph Options Screem sccsscscssssssseessees 43 Fig 34 Report Options Screen cccecceseeeseeeeeees 44 ts A Introduction Getting Started The Haz Scanner EPAS Air Monitoring System has been designed to provide accurate data through a simple intuitive user interface This manual will facilitate your ability to collect and analyze data with a minimum of effort Don t read manuals Take a quick look at the Quick Start Sheet to get you up to speed quickly Typographical Conventions The following conventions will make it easier for you to understand and use the features of the Haz Scanner command When you see text in this font you should type exactly what you see into the computer lt data gt You will type your specific data when you see this convention You will be given instructions on what type of data is acceptable Do not type the lt gt NOTES are found interspersed among the text they contain important information about the use of the system TIPS are also provided to help you get the most out of the Haz Scanner These shortcuts will make you a more efficient user of the system WARNING It is important to read and understand all warning messages Failure to do so can result in equipme
20. e log and off sensor and reset instrument Edit Key The edit key allows the user to accept the commands Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 fax 603 378 2113 www hazscanner com Air Quality Parameters When evaluating outdoor air the Haz Scanner measures the same parameters as those measured by the EPA under the National Ambient Air Quality Standard promulgated by the Clean Air Act In addition other parameters such as ultraviolet radiation wind speed and wind direction may be monitored The indoor environment has become an issue of concern over the past several years with the advent of new construction techniques and building materials that severely restrict the exchange of indoor and outdoor air This could have a deleterious effect on the quality of indoor air and therefore the quality of life Many substances effect the quality of the indoor environment The Haz Scanner depending upon configuration can quantify a number of key indicators of both indoor and outdoor air quality including Atomic radiation Barometric pressure Carbon dioxide concentration Carbon monoxide concentration Extremely Low Frequency ELF radiation Nitrogen dioxide concentration Ozone concentration Particulate concentration Percent relative humidity Sound level Sulfur dioxide concentration Temperature and Ultraviolet radiation VOC Hydrocarbons Each of the
21. eading _ Shade the sensor with your hand The value should drop A zero is a possible read ing however if you see dashes wait a minute for a reading to come in If you still see no reading reconnect the sensor cable to the ISS ensuring it is in the proper receptacle If you still see no reading contact Davis Technical Support see Techni cal Support at the back of this manual Unplug the sensor cable from the SIM For permanent mounting unplug the cable from the ISS and follow the instructions below The test procedure is complete Securing the Sensor on the Shelf _ Remove the rain collector cone from the ISS turn it counterclockwise until the latches allow you to lift it up and off _ Place the sensor shield onto the sensor body as shown here Route the sensor cable down through one of the large holes in the mounting ens 14 Screw shelf _ Place a flat washer over the end of each screw and insert it through the shield and body Place a spring over the end of each screw and hold the springs in place using a 6 screw retainer E 6 Flat Washer So Secure the sensor to the mounting shelf by driving the screws into the appropri ate holes as shown Using the bubble level on the sensor as a guide adjust the sensor until it is level by tightening or loosening the screws Repeat the above process to install an additional sensor Replace the rain collector cone when finished Note Final leveling of the
22. er The rain collector tipping bucket mechanism contains a standard measurement weight magnet that takes measurements in 01 for every tip of the bucket The Complete Weather Wizard IN 7425CS assembly contains a metric rain adpater that adjusts the tipping bucket mechanism so that it takes 2 mm metric measure ments To change the weight magnet 1 Find the metric measurement adapter included in the hardware 2 Locate the standard measurement weight magnet between the arms of the tip ping mechanism Open the arms slightly with one hand while pulling the magnet out with the other hand Open plastic tipping mechanism arms pull out magnet 4 Separate an end cap from one side of the magnet 5 Slide the magnet with the exposed end of the magnet first into the open slot of the metric measurement adapter Separate magnet from one end cap Insertmagnetwithotherendcapintometricmeasurement adapter 6 Insert the metric measurement adapter between the arms of the tipping bucket with solid side of the metric measurement facing up Openplasticarms toinsertmetricmeasurementadapter with adapter in V position the rain collector is now ready to take accurate metric measurements Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com 50 Haz Scanner Manual 1109 Sensor Characteristics and Modes of Operation The Haz Scanner con
23. erial cable to Haz Scanner and Computer 3 Press connect button 4 Select advanced tab 5 In type commands here text box type CV number for alarm you wish to change follow by and value you want the alarm to trigger See below chart corresponding CV and sensor values Sensor Alarm CV CO 201CV CO 202CV NO 203CV Particulates 204CV Relative Humidity 205CV SO2 206CV Temperature 207CV VOC 208CV Wind Direction 209CV Wind Speed 210CV Example command 201CV 1000 This corresponds to CO gas will sound alarm above 1000ppm 6 Press Send Data button 7 Select Main Tab Note Alarm will stay in memory until Haz Scanner is turned off After turning off Haz Scanner you will need to repeat steps 1 6 to set alarms Particulate Matter PM Sensor The PM sensor with the Haz Scanner has the capability to measure 4 0 micron 2 5 micron or 10 micron particle sizes You will find a small cylindrical piece in the Haz Scanner case These are called impactors You can change the particle detection size by physically replacing the PM impactor Fig 18 a b The PM10 impactor will detect a wider range of particle sizes than the PM2 5 impactor or PM 4 0 impactor Impactor sizes are labeled on the bottom of the Impactor Impactor assembly Occasionally you should remove and grease the impactor The impactor is located inside the Impactor sleeve Fig 19 Remove Impactor by pushing up with pencil Fig 20 Use just
24. he change in resistance causes the output voltage to change and this voltage is converted into degrees Utilizing a magnetic sensor the wind speed sensor generates a voltage wave whose frequency is proportional to wind speed The sound level sensor utilizes a sensitive calibrated microphone that generates a voltage that is proportional to the sound level Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com
25. hed at all make sure you fasten the probe down somehow or it may snap back and damage another sensor A non rechargeable 9V battery powers the ELF Meter Sound Level Meter Optional Accessory This sound level meter has been designed to meet the measurement requirements of Safety Engineers Health Industrial Safety Offices and Sound Quality Control in various environments This unit conforms to the IEC651 type2 ANSI 1 4 Type 2 for Sound Level Meters Ranges from 30dB to 130dB at frequencies between 31 5Hz and 8KHz Display with 0 1dB steps on a 4 digit LCD Two equivalent weighted sound pressure levels A and C Note Other calibration configurations can be achieved by adjusting Haz Scanner programming Consult Environmental Devices Corporation for further detailed Instructions Atomic Radiation Meter Geiger Counter Optional The top switch of this meter should be set to the middle position counts per minute CPM for proper operation with the Haz Scanner Slide the bottom switch to the ON position or to the AUDIO position if you would like to hear a click each time the system records a count Keep in mind that using the AUDIO position will shorten the life of the internal non rechargeable 9V battery Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com Setting the Alarms 1 Turn on and start Haz Scanner 2 Connect s
26. ing the SIM To access the SIM on a Vantage Pro2 station open the SIM Box See Opening the SIM Box in the Vantage Pro2 ISS Installation Manual for more information On earlier Van tage Pro stations the SIM Box is located below the ISS Radiation Shield For instruc tions on how to access the SIM Box on these stations see Opening the SIM Box in the Vantage Pro ISS Installation Instructions On Fan Aspirated Vantage Pro and Vantage Pro stations the SIM is located in a separate housing Again consult your ISS instruc tion manual for detailed instructions on how to access your SIM 1 Plug the sensor cable into the receptacle labeled UV on the SIM if it is a UV sensor or into the receptacle labeled SUN if it is a Solar Radiation Sensor Hold the sensor body with the white diffuser pointed upward Do not touch the dif fuser If you do clean it after mounting using a cotton swab and ethyl alcohol Do not use rubbing alcohol Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 USA Phone 603 378 2112 Fax 603 378 2112 www hazscanner com UV and Solar Radiation Sensor Pg 3 Ona Vantage Pro console press UV to see the UV sensor reading if you are install ing a UV sensor If you are installing a Solar Radiation Sensor press 2ND then SOLAR to see the Solar Radiation reading On a Vantage Pro2 console press 2ND then UV to see the UV sensor reading and 2ND then SOLAR to see the Solar Radiation R
27. ion Sensor x P N HS RS 6000 1 0 INTRODUCTION The 110 WS 16RC Rain Gauge is a tipping bucket rain gauge designed to meet the guidelines of the World Meteorological Organization Rain enters the collector cone passes through a debris filtering screen and collects in one chamber of the tipping bucket The bucket tips when it has collected an amount of water equal to 0 01 0 254 mm of rainfall As the bucket tips it causes a switch closure and brings the second tipping bucket chamber into position The rain water drains out through the screened drains in the base of the collector The body and base of the collector are constructed of tough UV resistant plastic The tipping bucket pivots on bearings that minimize friction and wear Stainless steel adjustment screws under each chamber of the tipping bucket allow you to fine tune the calibration Mounting holes are pre drilled in the base and a built in leveling trough aids in installation 2 0 TESTING THE RAIN GAUGE with the WS 16 Before installing the rain gauge 1 Turn the rain gauge upside down and remove the cone from the base by rotating the base until the latches on the cone line up with the latch opening in the base then lifting the base away from the cone 2 Remove the cable tie or foam or rubber band which holds the bucket in place during shipping 3 Attach the two leads of the rain gauge cable to the appropriate connectors on the data acquisition module red wire to P3 bl
28. ion time is quadrupled Recharge this battery when not in use B TURNING ON THE Haz Scanner Monitor The system is turned on by pressing the red square I O button and then pressing the red square start button TIP To avoid inaccurate data spikes near the beginning of your data file it is important to warm up the gas sensors prior to the beginning of data collection If this is not done initial data will appear to indicate elevated levels of pollutant gases or the zero point will be incorrect and all data may be incorrect Fig 26 I O Red square button is the start button HAZ SCA NNER r TIP To avoid inaccurate data spikes near the beginning of your data file it is important to warm up the gas sensors prior to the beginning of data collection If this is not done initial data will appear to indicate elevated levels of pollutant gases or the zero point will be incorrect and all data may be incorrect C THE Haz Scanner DISPLAY MODULE The display module Figure 26 allows you to control the functionality of the Haz Scanner It contains five membrane key switches that when pressed singly or in combination allow the user to perform certain tasks described below Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 fax 603 378 2113 www hazscanner com 28 Haz Scanner Manual Figure 27 Haz Scanner Display Module Function Key The function key allows the user to toggl
29. ioxide and ozone and between 0 and 50 ppm for carbon monoxide During calibration the slope and offset of the response curve is determined and stored in the datalogger Drift occurs when the offset changes due to temperature humidity the sensor being powered off and on and the age of the sensor Drift doesn t affect the slope of the response but it does affect the offset When the user zeroes the sensor before use the offset is reset to zero The carbon dioxide sensor utilizes a non dispersive infrared sensor IR energy passes through two identical chambers and falls on a detector The first chamber is a reference cell and is filled with a non energy absorbing gas such as nitrogen The second chamber contains ambient air CO will absorb IR energy and the difference between the two chambers is proportional to the CO concentration The particulate sensor utilizes an infrared source that is beamed across a chamber containing the air to be sampled When a particle interrupts the beam the beam is refracted at a specific angle The angle of refraction measured by a silicon photocell on the side of the chamber is used to determine the particle size The sensor is tuned to count particles of either 10 or 2 5 micron in size depending on the user selected impactor The temperature sensor is a TK thermocouple As the junction temperature of two dissimilar metals changes a current proportional to temperature is generated and then measured This type of
30. istow N H 03865 USA Phone 603 378 2112 Fax 603 378 2112 www hazscanner com UV and Solar Radiation Sensor ii Mounting Hardware Please make sure you have all components listed below before continuing Shield Body with cable attached Three 6 32 x 1 1 2 38 mm machine screws Three springs Three 6 flat washers Three 6 screw retainers Tools and Materials Needed To install your new sensor you will need a medium Phillips screwdriver Mounting the Sensors Installation on the Sensor Mounting Shelf The Solar Radiation and UV Sensors are designed to be mounted on the Sensor Mount ing Shelf Davis Instruments Product Number 6672 The Sensor Mounting Shelf is a stand that attaches to your ISS and provides a mounting location for up to two sensors First mount the shelf on the ISS and then follow these instructions to mount a UV or Solar Radiation Sensor on the shelf The shelf has two mounting locations one to hold a UV sensor and a the other for a Solar Radiation Sensor Because they are identical it doesn t matter which location you use first Testing the Sensor On the Integrated Sensor Suite ISS the connections for the Solar Radiation and UV sensors are inside the Sensor Interface Module SIM Box Before permanently install ing your new sensor Davis Instruments recommends that you test it first To do this take your console with you out to your ISS and follow the instructions below Access
31. isture in the air Sulfur Dioxide A combustion by product of wood burning stoves and hydrocarbon fuels sulfur dioxide SO2 is a toxic gas The NAAQS requires SO2 concentration to be below 140 parts per billion ppb in any given 24 hour period In some parts of Europe twenty four hour background levels are between 85 and 170 ppb according to the WHO Elevated levels of SO2 contribute to a variety of respiratory ailments Chronic long term low level exposure to SO2 is a contributing factor leading to bronchitis lung cancer and labored breathing Frequency and severity of respiratory disease also increases The ability of the lungs to filter out particles bacteria and harmful microorganisms is reduced Lung damage can be irreversible Temperature Comfortable indoor temperature is a subjective factor and there are no standards for indoor air temperature It should be noted however that lower temperatures will tend to inhibit the release of both volatile organic compounds found in construction materials paints and furnishings and formaldehyde Values between 6500F and 75 F are considered comfortable by a majority of people Particulates Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 46 Haz Scanner Manual 1109 The NAAQS primary and secondary standards for particulate matter referred to as PM10 or PM2 5 limit the annual arithmetic mean
32. memory however calibration settings are reset to factory settings when the machine is powered off and on Environmental Devices Corp recommends annual factory calibration Some of the sensors most notably the ELF meter Sound and the atomic radiation detector can be disconnected and used independently of the Haz Scanner system Of course without being connected these sensors will only display data on their built in LCD displays no data is stored in memory for later retrieval These meters are turned on using their own switch and are powered by 9V replaceable batteries See meter instructions for further information Wind Speed and Direction Standard Accessory The Wind Speed and Direction utilizes a rotary valve movement to measure both high and low air velocities Other calibration configurations can be achieved by adjusting Haz Scanner programming consult Environmental Devices for further Instructions 13 Haz Scanner Manual 1109 ELF Meter Optional Accessory When used with the datalogger the slide switch should be pushed down to measure ELF radiation in the 0 200 mG range The ELF sensor utilizes a single axis probe before placing the probe at a given location the probe must be oriented along each axis X Y and Z to determine the maximum reading and then left in that position for the duration of the logging session See the PLM 100WB Instruction Manual for more information NOTE If the coiled probe cable is stretc
33. nants 37 Uploading Da Minincicmnnnnnnimauumuuucunn 38 Other Ment HeimS iccccincncucnctemnmnnnne 39 Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com Haz Scanner Manual 1109 Viewing Data Pulesis it adasusdadsinicisaitaiiiaied 40 Plotting Graphsanissutnnnnatinnatniaknaninns 41 Generating Reports s sessesesessesissssesessssesessesesese 42 Editing the Informational Text File 000 44 Printing Data and REports a iisctonivannwniniins 44 Chapter 5 Air Quality Basics Air Quality Informa tiomisacitisccssdicseiesesncnsnostbesteses 45 Sensor Characteristics and Modes of Operation 54 Chapter 6 Troubleshooting Common Problems innnnsnnminccecmtacecates 56 Technical Support cinnnintonntndninnnianans 56 Appendices Appendix 1 Zeroing the Gas TES OLS cris acs svetsvad teks ve Syn civ ele es veneers SEELE EEEE 57 Appendix 2 Calibrating the Haz Scanner 58 Appendix 3 Haz Scanner Data File 00 59 Appendix 4 Haz Scanner Report ccceeeeees 60 List of Figures Fig 1 The Haz Scanner iin aincinauiinetineds 8 Fig 2 Haz Scanner Compomnentts cccccceeeees 9 Fig 3 Securing the Lid StayS cccsessssseneesenens 10 Fig 4 Mast Components cccccccseeseseeneseseeeeees 10 Fig 5 Correct Tripod Assembly ccceeeeeeeees 11 Fig 6 Tightening the Mast to the
34. ng and the afternoon Hydrocarbons combine readily in photochemical reactions with ozone O3 and nitrogen dioxide NO2 both of which are plentiful in polluted air The resulting compounds make up over 95 of the total organics found in heavy smog The NAAQS standard set for hydrocarbons is based on the role they play in the creation of tropospheric or ground level ozone rather than on the health effects they may cause directly Hydrocarbons as a group are toxic Polycyclic aromatic hydrocarbons PAH a group of suspected carcinogens includes benzo a pyrene BaP and eye irritants like formaldehyde acrolein and peroxacyl nitrate PAN These last three toxics also are responsible for the smarting eyes people feel during smog episodes EOS Nitrogen Dioxide Nitrogen dioxide NO2 is a gas that is a combustion by product Cigarette smoke is a significant source of NO2 in indoor air There is no indoor air standard for NO2 concentration The NAAQS limits the annual mean value to 50 parts per billion ppb for outdoor air Indoor levels can be considerably higher exceeding 1 000 ppb during meal preparation that involves cooking Average indoor concentrations may exceed 100 ppb over a period of days Urban outdoor concentration levels are usually between 10 and 50 ppb according to the World Health Organization WHO The WHO recommends that the maximum one hour exposure level be less than 210 ppb Since NO2 combines readily with oxygen and o
35. nge rate is also 5 dB A The EPA has adopted the more conservative limits that are followed by most European countries These limits are 75 80 dB A over 8 hours with an exchange rate of 3 dB A Exposure to excess noise can lead to reductions in hearing capacity that may be permanent Hearing loss usually occurs gradually and is not generally accompanied by pain Sometimes hearing loss is accompanied by tinnitus a ringing or buzzing in the ears that is extremely distracting By the time we are aware that our hearing has been reduced it is probably too late to do much about it Although a person s risk of hearing loss depends on the duration and intensity of exposure to noise it is believed that repeated exposure to noise above 85 dB A over an extended period of time will result in permanent damage In some instances a single traumatic exposure to a very loud noise of 150 dB A such as an explosion or a terrific crash can cause permanent hearing loss ELF Radiation Extremely Low Frequency ELF radiation is emitted by any electric device that utilizes alternating current including many devices that use wall outlets as a power source Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 47 Haz Scanner Manual 1109 There is a great deal of controversy over to what degree if any ELF is harmful Data available from studies is inconclusive however li
36. nks between electromagnetic energy exposure and leukemia and assorted cancers have not been ruled out There are no US regulatory standards for either electric or magnetic fields Background magnetic fields however usually fall between 1 to 4 milligauss mG The Swedish government has set a standard for video display terminals VDT of 2 5 mG at a distance of 50 cm 1 ft 8 in Note that the measurements we make are valid for the period when they are taken field strengths can vary over time Also be aware that magnetic fields disappear when an appliance is turned off but many appliances must be unplugged to eliminate electric fields We suggest following a practice known as prudent avoidance a proactive approach to avoiding excessive ELF radiation In general without going to extreme lengths unless levels are extremely high you can and should re arrange your physical relationship to appliances with significant ELF emissions For example replace old fashioned motor driven electric clocks that are on your bedside table with newer digital clocks and sit two to three feet away from computer monitors and televisions The manner in which this survey is done is based on that outlined by the EPA in a report entitled EMF In Your Environment Magnetic field Measurements Of Everyday Electrical Devices EPA Office of Radiation And Indoor Air 402 R 92 008 Dec 1992 Using a tape measure and a MEDA PLM 100WB meter in wide band mode 12 5
37. nt damage System Requirements At a minimum your computer must have Windows XP or Mac OS X 10 1 or higher with Classic Environment installed Hard disk with at least 10MB megabytes of free disk space 10MB of RAM memory PC Only 1 available COMM port port used for connecting a serial device Mac Only Serial port to USB converter Installing the Software Insert the HazComm software CD into your CD drive Extract zip files to the root program files The root drive on a windows computer is the C drive After extracting the HazComm software you will need to extract the uploads zip folder to your desktop You may install the software on as many computers as you like Double click on the Read Me First txt file for more information When you have finished installing the software store the CD it in its case in a safe location Where to start You may want to start by collecting a small amount of data and then generating a report If you would like more guidance turn to Chapter 2 and try the Haz Scanner tutorial If you are having problems please contact technical support personnel who will be happy to get you up to speed E mail Techsupport hazdust com Chapter 1 Hardware Setup In this chapter you will learn how to assemble the system and how to collect data of interest to you The complete system consists of standard and optional components Standard sensors are Particulates PM10 or TSP VOC Temperature Rela
38. ration 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 www hazscanner com 22 Haz Scanner Manual Depending upon sensor configuration This is a good way to see if the logger is working normally 3 Using the Up or Down arrows on the display module scroll through the sensors until you see RH relative humidity Note the value Scroll down and also note the value of the temperature sensor 4 Dampen the washcloth with hot water and place it near the back sensor panel where the temperature relative humidity probe is located 5 Note the temperature value within a minute or two you should see it rise noticeably After you see a change in the value of the temperature sensor scroll up to the RH display The relative humidity should also have risen noticeably 6 Now exhale a few times on the CO sensor mounted in sensor panel Scroll until you see the value of the CO sensor on the display It should rise dramatically since the CO concentration of exhaled breath is about 20 000 parts per million ppm and the ambient indoor concentration is often less than 1000 ppm 7 Now we will cause the gas and particulates sensors to read higher values than normal Light a match and hold it about two to three inches from each of the gas sensors Gently blow the flame over each sensor Blow out the match and blow the smoke near the particulate sensor 8 Using the arrow keys scroll through each of the ga
39. rom the sensor to the module Cable connections account for a large portion of the potential problems Connections should be firmly seated in the terminal strip and plugged in straight If you think a connection may be faulty try jiggling the cable while looking at the display If a reading appears intermittently on the display as you jiggle the cable the connection is faulty Make sure there is no magnetic steel or iron object near the rain gauge Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Rainfall Precipitation Sensor x P N HS RS 6000 Make sure the funnel hole in the cone is clear so water can empty into the bucket Make sure the bucket moves freely when tipping to both sides The display should show an increase in rainfall for each tip of the bucket Check signal with an ohmmeter A momentary switch closure should be observed each time the bucket tips 6 2 Rainfall amount shown on the display has a small error Make sure the rain gauge is mounted on a level surface Use the adjustment screws to adjust the rain gauge s sensitivity if necessary Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Rainfall Precipitation Sensor ss P N HS RS 6000 Appendix A 2 mm Option Insert the Optional Metric Measurement Adapt
40. rt the cable jack into the proper receptacle and replace the Foam Insert ensuring that the Foam Insert fills all large voids in the access port Maintaining the Sensor For the most accurate readings clean the diffuser after mounting and then periodically Use ethyl alcohol not rubbing alcohol Due to the sensitivity of ultraviolet and solar radiation sensors it is common practice for manufacturers to recommend recalibration after a period of time Here at Davis Instruments we have seen approximately 2 drift per year on the readings from these sensors For applications demanding higher accuracy the sensors should be calibrated once every year Sensor Troubleshooting If encountering sensor problems carefully check all cable connections from the sensor to the console Cable connections account for a large portion of the potential problems Connections should be firmly seated in the jacks and plugged in straight Try jiggling the cable while looking at the display If a reading appears intermittently on the display as you jiggle the cable the connection is faulty Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 USA Phone 603 378 2112 Fax 603 378 2112 www hazscanner com Rainfall Precipitation Sensor m P N HS RS 6000 TABLE OF CONTENTS Section No 1 0 INTRODUCTION 2 0 TESTING THE RAIN GAUGE 3 0 INSTALLATION 3 1 Choose a Location 3 2 Install the Rain Gauge 4 0 CALIBRATION 5 0 M
41. s sensors and you will see after a minute or two that the values have gone up The particulates sensor will also register a noticeable gain Uploading Data Press the function key and press the down arrow key to find log off Press the checked button and screen should go to log off with arrows and red light will turn off Refer to HazComm manual for uploading to HazComm software Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 fax 603 378 2113 www hazscanner com 26 Haz Scanner Manual 1109 Chapter 3 Using the Haz Scanner A POWER CONSIDERATIONS Charge Battery for 14 Hours The average battery power run time is 8 hours depending on concentration and alarm conditions Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 27 Haz Scanner Manual The Haz Scanner shuts off automatically when the internal battery voltage level falls below a preset value At this time data collection will cease in order to preserve data integrity Data already collected will be saved If this happens you will need to connect the battery charger before retrieving the collected data Furthermore if you try to turn the system on and the main battery is below 10 5 volts the system will not turn on fully Connect the charger immediately When the external battery pack is plugged into the system the data collect
42. sensor s should be done with the ISS mounted in its operating location Routing the Sensor Cable Route the sensor cable to the SIM Box and insert the cable jack into its appropriate receptacle marked SUN for a Solar Radiation Sensor or UV for a UV Sensor Ensure that the cables are free of crimps and are dressed so that they will not fray in the wind Page 3 Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 USA Phone 603 378 2112 Fax 603 378 2112 www hazscanner com UV and Solar Radiation Sensor bad On Vantage Pro stations with a squared radiation shield ensure that the cables run to the SIM Box following the same path through the radiation housing as the rest of the sensor cables Consult your ISS Manual for instructions on how to do this On later Vantage Pro stations and Fan Aspirated Vantage Pro stations ensure that the sensor cables run down through the holes near the base of the sensor mounting shelf and through the grommet in the SIM Box that the other sensor cables run through On Vantage Pro2 stations first run the cables down from the Sensor Mounting Self and down through the holes near the base of the Sensor Mounting Shelf Next run the cables through the space between the Rain Collector and the Radiation Shield follow ing the other sensor cables to the access port at the back of the SIM Box Open the Sim Box remove the Foam Insert and guide the cable through the access port Inse
43. sists of a number of different types of sensors All of the gas sensors with the exception of the carbon dioxide sensor are electrochemical sensors These sensors rely on a chemical reaction between the target gas and a chemical gel that is specific to each sensor When the gas comes in contact with the gel a very small electrical current is generated This current is proportional to the gas concentration This current is then amplified electronically to a readable level It is possible that the sensor may react to other gasses causing the reported value to either go up or down This is known as cross sensitivity We have chosen the most selective and accurate sensors available Cross sensitivity effects sensor accuracy although accuracy is primarily determined by the frequency of calibration and the accuracy of the gas used to calibrate the sensor This is called the span gas Our bottled gas standards are generally 10 of the span value Repeatability the likelihood that repeated measurements will yield the same result is 2 of span Since these sensors are measuring minute levels of pollutants in ambient air it is critical that they be zeroed before use in order to maintain the highest degree of accuracy No sensors have a perfectly linear response curve As a result when the gas sensors are calibrated they are done so over the region of greatest interest to our users which is typically between 0 and 300 ppb for nitrogen dioxide sulfur d
44. ther chemicals isolating its health effects is difficult The photochemical oxidants that it helps to create have varying degrees of Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com 45 Haz Scanner Manual 1109 toxicity NO2 contributes to respiratory illnesses especially in people who are already vulnerable due to bronchitis asthma or other lung disease Ozone Ground level ozone O3 is a pollutant that can cause respiratory problems The Food and Drug Administration FDA suggests that the indoor ozone concentration should be less than 50 parts per billion ppb The NAAQS designates a maximum concentration of 120 ppb for any one hour period As ozone levels rise a continuum of less to more severe symptoms are reported starting with dry throats wheezing and eye irritation Breathing may then become more labored especially while exercising At levels above 20 ppb the potential for asthmatic attack increases athletic performance decreases significantly and the impact of infectious illnesses is worsened All of these effects are magnified for those who smoke cigarettes Relative Humidity ASHRAE 62 1989 suggests maintaining an indoor relative humidity between 30 and 60 A relative humidity higher than 60 encourages the growth of mold and other biogenic pollutants while humidity below 30 may cause irritation to mucous membranes due to a lack of mo
45. tive Humidity Wind Speed and Wind Direction Optional sensors are below 1 Tripod assembly optional accessory 2 Haz Scanner EPAS 3 Optional Peripheral Monitors Solar Irradiance sound atomic radiation ELF or custom specific hand held s 4 Visual amp audible alarm assembly optional HAZ SCANNER MODEL EPAS Tripod Assembly Picture of EPAS fully assembled on tripod with sensors Place lower mast in center of tripod Note Tighten all bolts securely Secure backup battery mounting plate to tripod Extend tripod base and mount solar as shown Place battery in plastic housing panel bottom bracket to clamps on tripod Insert upper mast amp Connect sensor cable to EPAS here secure sensors Wind speed Solar Rain sensor Mount EPAS holding bracket here Connect battery to solar panel Note All tripod bolts must be secure Extend upper mast amp insert pin Mount solar panel amp tighten nut on lower mast clamp to tripod here Extend solar panel extension bracket and secure to bottom Note Solar panel must face south in direction at approximately 22 30 angle and free of obstruction or shade to reach maximum solar efficiency C INSTRUMENTATION Each Haz Scanner system is manufactured according to the customer s sensor specifications Although individual systems may have different numbers of sensors attached the software is self configuring and determines which sensors
46. uring water into the T shaped leveling trough in the base of the gauge Choose a location which is easily accessible for normal cleaning and is distant from trees or other sources of heavy pollen or debris 3 2 Install the Rain Gauge 1 Separate the cone from the base 2 If necessary disconnect the rain gauge cable from the data acquisition module 3 With the WS 16RC A mounting arm is supplied with the rain gauge Mount onto the vertical mast of the tripod supplied with the station using the attached u bolt 4 Attach the two leads of the rain gauge cable to the appropriate connectors on the data acquisition module red wire to P3 black wire to GND Note The 4 conductor cable supplied with the gauge has been converted to a 2 wire connection marked with red and black shrink sleeving See diagram below Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow N H 03865 U S A Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Rainfall Precipitation Sensor x P N HS RS 6000 Rain Gauge Black Cable WS 16D Termination Internal Colors Red 5 To be certain the rain gauge is functioning properly after installation re test the unit as described in Testing the Rain Gauge above 6 Once you are sure the unit is functioning properly place the cone back onto the base by putting the latches on the cone into the latch openings in the base and rotating the cone clockwise until the latches
47. your local board of health The information in this report comes in part from the following EPA documents Indoor Radon and Radon Decay Product Measurement Protocols EPA Office of Radiation Programs 520 520 1 89 009 March 1989 Radon Measurements in Schools An Interim Report EPA document 520 1 89 010 Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 WWW hazscanner com UV and Solar Radiation Sensor a The Davis Instruments UV Sensor is a precision instru ment that detects ultraviolet UV radiation at wave lengths of 290 to 390 nanometers The spectral response is closely matched to the Erythema Action Spectrum defined by McKinlay and Diffey 1987 and internationally recognized as the radiation that is most responsible for causing redness of the human skin The Davis Instruments Solar Radiation Sensor is a pre cision instrument that detects radiation at wavelengths of 300 to 1100 nanometers The spectral response of the silicon photodiode detector is a good match to the spectrum of solar irradiance Typically users install both the Solar Radiation Sensor and the Davis UV Sensor How ever users may install only one of these sensors Unless otherwise noted instructions in this manual apply to both sensors Individual specifications for each sensor are listed on the Davis Website at http www davisnet com support weather under the spec sheets link Note
48. your local computer store or online Environmental Devices Corporation recommends the Belkin USB Serial for Macintosh Model F5U103 MAC The adapter is not required if you have an older Mac that has labeled printer and modem ports More information can be found on the HazComm software manual Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 Fax 603 378 2113 www hazscanner com Gas Sensor Panel Fig 21 Sensor Panel Fig 22 Gas Sensor Panel 1 The sensors are labeled on the side plate of the EPAS Gas sensors are located inside the sensor cover Fig 22 Gas sensors are zeroed with purge scrubber to zero the gas sensors Haz Scanner Manual 20 1 T Begin data collection by pressing function button and using Up and Down arrows finding log on hen press checked button Screen will display Log On with arrows and red light will be lit Press function again to exit screen 2 Scroll through the sensors until you come to display which says Record Count 1 BM secure Do NOT turn off the Haz Scanner prior to collecting data The zeroing information is not saved permanently DO remember to remove the zeroing plugs Environmental Devices Corporation 4 Wilder Drive Bldg 15 Plaistow NH 03865 Phone 603 378 2112 fax 603 378 2113 www hazscanner com 21 Press I O Start Button Haz Scanner Display Module Environmental Devices Corpo
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