Aerosol Photometer Models 2H and 2HN
Contents
1. 4 To access a parameter once it is displayed press the lt ENTER gt function key 5 Select the desired setting for the parameter by using the lt A gt Up and lt V gt Down function keys 6 When the desired setting is displayed press the lt ENTER gt function key to store the setting 7 Following the selection of the parameter setting the display will return to the main parameter menu ready to select either another parameter or LO to return to sampling mode Digital Aerosol Photometer Model 2H LO Enter Exit This is a non programmable parameter This parameter is used to both enter and exit the parameter setting menu When LO is selected the programmable parameter settings are included in the operating routine Scroll to LO and press lt ENTER gt to return to running mode L1 Audible Alarm ON OFF 18 Options Off 1 On Default Off Enables or disables the audible portion of the 2H alarms The unit parameter is factory set to off When L1 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting A appearing in the Leakage display indicates that this parameter is currently disabled A 1 indicates an active parameter Press the lt A gt Up and lt V gt Down function keys to change the displayed setting between 0 disabled and 1 enabled Press lt ENTER gt to set the selection and return to the parame2. 8 Downstream Sample Port Connects to the respirator sample tubing 9 Optics Indicator Light Corresponds to the cleanliness of the optics Green Light Less than 10 000mg of aerosol has moved through the scattering chamber Orange Light More than 10 000mg but less than 17 000mg of aerosol has moved through the scattering chamber Red Light More than 17 000mg of aerosol has moved through the scattering chamber Servicing of the unit is highly recommended 10 Flow Indicator Light Indicates the status of the flow meter Green Light The flow is within 5 of 1 CFM Orange Light The flow is between 5 and 10 of 1 CFM Red Light The flow is more then 10 above 1 CFM Note These values are approximate Actual mass may vary with different airflow rates and aerosols Digital Aerosol Photometer Model 2H 11 Front Panel Keypad 12 AEROSOL PHOTOMETER 2H LEAKAGE Figure 3 Keypad Aerosol Photometer 2H The front panel contains seven pressure activated function keys The lt 0 gt lt 100 gt lt REF gt and lt ALARM gt keys each contain a red LED to indicate the state of the switch or to prompt the operator The lt A gt and lt V gt keys are used to scroll between selections as they are shown on the LEAKAGE display The lt ENTER gt key serves as the command key for sending information to the processor and for initiating or stopping system routines The lt A gt l
3. canon cnn rana 34 Contacting ATI iii sites anne ai datada 35 For Technical or Application Questions 35 For CUSLOMER SOMVICG ii siccs tee nona 35 WAV EE RE tdi 36 Declaration of Conformity ses 37 Quick Setup Reference ns 38 AU e Bees a EP ne Tios RE 38 Audible Alarm ON or OFF ri 38 internal Reference ii ina aoaaa Eaa a eaaa ana ddae aeea aaa aae 38 Setting 100 a 39 Optics and Flow LEDS a adidas 40 Manual Revision History recrea 41 Figure 1 Digital Aerosol Photometer 2H i 2 Figure 2 Front Panel Aerosol Photometer 2H 10 Figure 3 Keypad Aerosol Photometer 2H in 12 Figure 4 Rear Panel Aerosol Photometer 2H 13 Figure 5 RS 232 Side Port Aerosol Photometer 2H 15 Table 1 Packing List for the Digital Aerosol Photometer Model 2H 6 Table 2 Serial Port Settings for communication with the 2H 15 Table 3 2H Programmable parameters and associated functions 17 Table 4 Specifications of the Digital Aerosol Photometer Model 2H 30 Table 5 Aerosol Correction Factors for the Digital Photometer Model 2H 33 vi Intentionally Left Blank Guidelines to use this manual Symbols The following symbols are used throughout the manual to draw attention to items or procedures that require special notic
4. give the user the opportunity to check the integrity of all the LEDs with the exception of the OPTICS LEDs The FLOW LED will be green yellow or red The OPTICS LED will be off at this time After a few moments the firmware revision main PCB will be displayed Next the screen will go blank and after a few more moments another short beep will sound The reference light will blink indicating that it is time to select a reference Follow these steps to complete the setup 1 Press lt ENTER gt Use the lt A gt Up and lt V gt Down function keys to select the reference of choice Press lt ENTER gt 4 Use the lt A gt Up and lt V gt Down function keys to select the internal reference factor 5 Press lt ENTER gt 6 The unit will scan while adjusting the detector gain level SO The lt 0 gt LED will begin to blink indicating that it is time to set the zero reference Double check the selector valve is set to clear 7 Press lt ENTER gt The bar graph display will indicate that the unit is sampling the zero reference value Upon completion a short tone will sound and the unit will begin sampling and sending data via the serial port Digital Aerosol Photometer Model 2H Setting Parameters The Digital Aerosol Photometer 2H has twelve operating parameters not counting LO eight of which are programmable by the operator to facilitate setting up the instrument for operation S
5. local representative to learn more about data logging options If using a terminal program package such as Windows Hyper terminal a straight cable must be used as opposed to a null modem cable If using a Pocket PC PPC to receive data the type of cable will depend upon the brand of PPC Contact ATI customer service for complete details Figure 5 RS 232 Side Port Aerosol Photometer 2H The 2H serial port settings are described in the following table Table 2 Serial Port Settings for communication with the 2H Bits per second 2400 Data bits 8 Parity None Stop bits 1 Flow Control None Digital Aerosol Photometer Model 2H Chapter 4 Operating Instructions for the Aerosol Photometer Initialization 16 Apply power to the 2H by setting the rocker switch to the 1 position On Verify that the selector valve knob is turned to the CLEAR position Verify that the display is fully lit displaying 88888 with a fully illuminated bar graph beneath This display must occur before the 2H is ready to use The following events will occur 1 The display will show 88888 2 All of the LEDs in the bar graph will be illuminated Bar Graph scans for 20 seconds 3 The LEDs in the 0 100 REF and ALARM buttons will be illuminated 4 A short beep will sound 5 The flow sensor indicator LED on the front panel becomes active These events indicate that the unit has started and also
6. optional scanning probe The filter and the perimeter of the filter pack should be scanned by passing the probe in slightly overlapping strokes so the entire area of the filter is sampled The end of the probe should be held one inch from the filter surface Separate passes should be made around the entire periphery of the filter along the bond between the filter pack and the frame and around the seal of the filter Readings on the meter will indicate percent of penetration The display indicates the percent of leakage through or around the filter The scanning probe is supplied with 3 types of nozzles that can be attached to the end of the flexible probe The round black nozzle is 1 inch 25 mm in diameter which complies with NSF National Sanitation Foundation Standard 49 1992 The rectangular blue isokinetic nozzle is used for faster scanning and is accepted by many standards including NSF 49 2002 The round red nozzle is also an isokinetic nozzle The isokinetic nozzles are designed for face velocities of 90 20 feet per minute fpm when using a 1 cfm 28 3 L min sample rate Digital Aerosol Photometer Model 2H 3 How the Photometer Operates Theory of Operation When air or gas is drawn through the scattering chamber particulate matter in the sample passes through the focal point of the scattering chamber Particulate matter scatters light into the dark cone and onto the photomultiplier tube which converts the light into an e
7. point the display with flash If the audible alarm parameter L1 is set to ON a tone will also be heard Digital Aerosol Photometer Model 2H Changing the Reference During the initialization sequence immediately following unit startup the user is required to select a reference To change the desired reference anytime thereafter perform the following steps 1 3 Press the lt REF gt function key The lt REF gt LED will flash and the display will go blank Press the lt ENTER gt function key If the lt ENTER gt key is not pressed within about three seconds the unit will return to sampling mode 4 Use the lt A gt Up and lt V gt Down function keys to select the desired reference 5 Press the lt ENTER gt function key 6 Use the lt A gt Up and lt V gt Down function keys to select the desired internal reference factor 7 Press the lt ENTER gt function key The lt 0 gt LED will begin to blink indicating that it is time to set the zero reference Double check the selector valve is set to clear 8 Press lt ENTER gt The bar graph display will indicate that the unit is sampling the zero reference value Upon completion the unit will return to the sampling mode Upstream Aerosol Measurements DOP or PAO Note Do not perform the steps in this section until completing the steps described in the Initialization section Note If there is a concern that the
8. products or any inability to use them either separately or in combination with other equipment or materials or from any other cause Our service policy is designed to give prompt attention to any problems If you encounter a defective product or discover a malfunction please call ATI Customer Service to obtain a return authorization at 410 363 9696 Digital Aerosol Photometer Model 2H Appendix G Declaration of Conformity AIR TECHNIQUES INTERNATIONAL 11403 Cronridge Drive Owings Mills Maryland 21117 2247 USA Tel 410 363 9696 Fax 410 363 9695 Website http www atitest com Declare under our sole responsibility that the product 2H Digital Aerosol Photometer is in conformity with the following directives Application of Council Directive s Standard s to which Conformity is Declared Electromagnetic Compatibility Directive 89 336 EEC EN 61326 1 1998 Low Voltage Directive 73 23 EEC Design documentation is maintained at Air Techniques International 11403 Cronridge Drive Owings Mills Maryland 21117 2247 USA Ga Pr Eric Hanson Date of Issue President Place of Issue Air Techniques International Digital Aerosol Photometer Model 2H EN 61010 1 2001 02 September 2003 Owings Mills Maryland 21117 2247 USA 37 Appendix H Quick Setup Reference Setup To enter setup press lt A gt then lt ENTER gt Press lt A gt or lt V gt then lt ENTER gt to se
9. that inspection by ATI if required indicates the validity of such claim to ATI s satisfaction b That the defect is not the result of damage incurred in shipment to or from our factory c That the equipment has not been altered in any way whether as to design or use whether by replacement parts not supplied or approved by ATI or otherwise d That any equipment or accessories furnished but not manufactured by ATI or not of ATI design shall be subject only to such adjustments as ATI may obtain from the supplier thereof ATI s obligation under this warranty is limited to the repair or replacement of defective parts with the exception noted above If the equipment includes a scattering chamber ATI s warranty does not extend to contamination of the scattering chamber by foreign material At ATI s option any defective equipment that fails within the warranty period shall be returned to ATI s factory for inspection properly packed with shipping charges prepaid No equipment shall be returned to ATI without prior issuance of a return authorization by ATI No warranties express or implied other than those specifically set forth herein shall be applicable to any equipment manufactured or furnished by ATI and the foregoing warranty shall constitute the Buyer s sole right and remedy In no event does ATI assume any liability for consequential damages or for loss damage or expense directly or indirectly arising from the use of ATI
10. Clean the gross particulate screen located at the base of the flexible scanning probe extension e Remove any loose debris from the Scanning Probe and front panel sampling ports Annually e Return the 2H to a factory authorized facility for calibration and cleaning Please contact the ATI Customer Service Department at 410 363 9696 for a return authorization number A service date will be scheduled for your instrument at that time Note A Return Authorization can also be obtained using ATl s website or by sending an e mail requesting service information to info atitest com A customer service representative will process your information and contact you with a Return Authorization necessary instructions and information within 48 hours General Maintenance Procedures The 2H Aerosol Photometer is a sturdy solid state electronic instrument designed to hold up under extended field use The only moving parts are the vacuum pump the selector valve and the ventilating fan at the rear of the chassis Field level maintenance is limited to replacement of the HEPA exhaust filter and the fuses Procedures for these operations are contained in this section Note The internal electronics are not user serviceable Any electronic problems must be analyzed and repaired at an authorized service center 28 Digital Aerosol Photometer Model 2H There is no indicator on the front panel showing that the scattering chambe
11. ON and OFF on the display Press lt ENTER gt to set the selection and return to the parameter select menu L9 will be displayed Digital Aerosol Photometer Model 2H L10 Leakage Display Intensity Options 1 8 Default 5 This option is used to adjust the intensity of the green LED display in the Leakage display When L10 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between 1 and 8 on the display Press lt ENTER gt to set the selection and return to the parameter select menu L10 will be displayed L11 0 Purge Time Options 0 120 seconds Default 0 seconds Set the length of time for the system to run before taking reading when calculating the zero value When L11 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between 0 and 120 on the display Press lt ENTER gt to set the selection and return to the parameter select menu L11 will be displayed Digital Aerosol Photometer Model 2H 23 L12 100 Purge Time Options 0 120 seconds Default 0 seconds Set the length of time for the system to run before taking r
12. Photometers Aerosol Photometer Models 2H and 2HN Instruction Manual P N 1800110 Revision J May 2014 ii Intentionally Left Blank 111 Sections iv Contents Guidelines to use this Manual vi SYMbOIS iei cise A Be Ei ae vii CONVentiOns taria ia e vii Digital Aerosol Photometer Overview rrrrrri i 2 Instrument Description narco narco 2 Filter Leak Testing The Most Common Application eseese 3 How the Photometer Operates i 4 Unpacking and Setting Up the Digital Aerosol Photometer 6 WMPACKING RPE E canoa ie dise 6 Install aviaria doni laterali tali 7 Description of the Digital Aerosol Photometer Controls and Indicators 10 Front Panel Connectors and INdiCators i 10 Front Panel Keypad ss 12 Rear Panel Connectors nn ncnannrnnnnnnnnnns 13 RS 292 Gide PO nioena Dieii air a 15 Operating Instructions for the Aerosol Photometer ocoooncccccccnonnncnsonnnananennnnenas 16 Initralizatio ni ga RE A ii 16 Setting Parameters iii 17 LOS Ente Bibi aii oil letal 18 L1 Audible Alarm ON OFF inner 18 L2 0 Sampling Time nano nana nn cc rana nn nan nccin 19 L3 100 Sample Time i 19 L4 Decimal Places to be displayed i 20 L5 Internal Reference Base 20 L6 Hour M
13. TTING 100 procedure above These values are approximate and may vary depending on the flow and or the aerosol being used Flow LED Green Flow within 5 of 1 CFM Orange Flow within 5 to 10 of 1 CFM Red Flow is more than 10 above or below 1 CFM 40 Digital Aerosol Photometer Model 2H Appendix Manual Revision History Manual Revision History The following is a manual history of the 2H Digital Aerosol Photometer Instruction Manual P N 1800110 Revision Date F November 2005 G May 2007 H January 2008 J May 2014 In Revision F Initialization sequence was revised In Revision G Manual format was revised and appendix I was added In Revision H Spare parts list and accessories was modified to change part number 5500001 to 0600424 In Revision J removed reference to manual decade selection while displaying Pen Digital Aerosol Photometer Model 2H 41 Notes 42 Digital Aerosol Photometer Model 2H Notes Digital Aerosol Photometer Model 2H 43 Notes 44 Digital Aerosol Photometer Model 2H RTA Air Techniques International 11403 Cronridge Drive Owings Mills MD 21117 2247 U S A Web www atitest com
14. Troubleshooting Controller Error Messages 34 Error Problems Cause Corrective Action Code El Calibration The unit has not been Return the unit to ATI or flags not set calibrated or the unit has Authorized service center lost memory for repair and service as soon as possible E2 LSC voltage Concentration readings 1 Ensure that the selector not stable are not stable enough to valve is in the correct perform a reliable 100 position and try again or 0 Check the aerosol source E3 Optics Dirty Sufficient aerosol Return the unit to ATI for condensation and or repair and service as soon particulates have built up as possible on the internal optics such that a cleaning is highly recommended E4 100 There is insufficient 1 Check the aerosol source calibration aerosol for the unit to 2 Use a higher concentration failed capture a reliable 100 as the 100 reference value for the USER reference Digital Aerosol Photometer Model 2H Appendix E Contacting ATI For Technical or Application Questions If you have any difficulty setting up the Digital Aerosol Photometer Model 2H or application questions about this instrument contact an applications engineer at ATI 410 363 9696 For Customer Service If the Digital Aerosol Photometer 2H is not operating properly or if you are returning the instrument for service contact ATI Customer Service 410 363 9696 Customer Servi
15. assure the accuracy of all readings Figure 1 Digital Aerosol Photometer 2H 2 Digital Aerosol Photometer Model 2H Filter Leak Testing The Most Common Application The most common application of the Aerosol Photometer 2H is to detect leaks in high efficiency filter systems HEPA amp ULPA To establish the integrity of a filtration system a challenge agent consisting of an airborne test aerosol is generated and introduced upstream of the filter The challenge agent is used to provide enough particulate matter upstream of the filter to allow statistically valid measurements downstream of the filter The test aerosol should be introduced into the upstream side of the filter s as far from the filters as is practical to insure adequate mixing 10 duct diameters are considered ideal A sample of the aerosol air mixture should be taken from the upstream side close to the center of the filters This sample is used to set the 100 base line since it is the concentration of the challenge aerosol The apparatus is adjusted as described in the Operating Section to set the 100 reading and then the stray light is adjusted The stray light adjustment is necessary to compensate for any signal caused by dark current or reflection of internal surfaces of the scattering chamber After these adjustments have been made the equipment is ready to check leaks on the downstream side of the filters The filter test is performed with the use of the
16. ce will need this information when you call O O O O O The instrument model number The instrument serial number A purchase order number unless under warranty A billing address A shipping address Use the original packing material to return the Digital Aerosol Photometer Model 2H to ATI If you no longer have the original packing material use sufficient packing material so the instrument is not damaged during shipping Digital Aerosol Photometer Model 2H 35 Appendix F Warranty Part Number Address Phone No Fax No E mail Address Limitation of Warranty and Liability Service Policy 36 1800110 Revision H February 2008 Air Techniques International 11403 Cronridge Drive Owings Mills MD 21117 USA 410 363 9696 410 363 9695 info atitest com Air Techniques International hereinafter referred to as ATI warrants the equipment purchased hereunder to be free from defect in materials and workmanship under normal use and service when used for the purpose for which it is designed for a period of 1 one year from the date of shipment ATI further warrants that the equipment will perform in accordance with the technical specifications accompanying the formal equipment offer ATI will repair or replace any such defective items that may fail within the stated warranty period PROVIDED a That any claim of defect under this warranty is made within thirty 30 days after discovery thereof and
17. d a Vacuum Pump Exhaust HEPA Filter Caution The 2H should always be positioned so that the Power Switch located on the rear panel is readily accessible in the event the unit needs to be powered off quickly Digital Aerosol Photometer Model 2H 13 14 The Power Connector accepts the female end of the Power Cord that comes with the unit The internal power supply is a universal supply that can operate at either 50 or 60 Hz and with any voltage from 90 to 240 volts for use in virtually all countries Therefore any plug with the correct female end IEC 320 standard may be attached to the unit and the universal power supply will automatically switch to use the supplied input power The Vacuum Pump Exhaust HEPA Filter is provided so that the sensitive environments of cleanrooms can be maintained The air expelled by the unit is continually filtered of all particulate matter generated by testing aerosols and the unit using this HEPA exhaust system Digital Aerosol Photometer Model 2H RS 232 Side Port The Digital Aerosol Photometer 2H features an RS 232 connector located on the side of the unit in the form of a 9 pin female D subminiature connector The Leakage data is continuously sent via the RS 232 port as it is updated on the Front Panel Display approximately once per second It is recommended that this data be logged by either one of ATT s data acquisition systems the DASI or the DAS2 Contact ATI or your
18. displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between 3 and 4 on the display 3 0 001 4 0 0001 Press lt ENTER gt to set the selection and return to the parameter select menu L4 will be displayed L5 Internal Reference Base 20 Options DOP PAO USER HIGH Default DOP Establishes the internal reference base response based upon a gain setting stored during factory calibration When LS is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between DOP PAO USER or HIGH Note Refer to section Changing the Reference to change the selection or reestablish internal reference See Appendix C Aerosol Correction Factor for correction factors to be used in conjunction with other challenge aerosols Press lt ENTER gt to set the selection and return to the parameter select menu L5 will be displayed Digital Aerosol Photometer Model 2H L6 Hour Meter Options None Default None This option displays the total running time for the unit When L6 is displayed in the parameter menu press the lt ENTER gt function key to access the hour value Pr
19. e DASI interface Contact ATI or your local representative for more information about the data acquisition systems available from ATI y d 11 00 EY Live Mode Selected building 115 Leakage 12 3450 Information Digital Aerosol Photometer Model 2H 5 Chapter 2 Unpacking and Setting Up the Digital Aerosol Photometer Unpacking Carefully unpack and remove the Digital Aerosol Photometer Model 2H and all accessories from its shipping container If the instrument has been damaged in transit notify the shipper immediately The Digital Aerosol Photometer Model 2H 9300133 and Model 2H N 9300147 consist of a photometer and accessories including the following Table 1 Packing List for the Digital Aerosol Photometer Model 2H Qty Item Part Number 1 2H Unit 0200301 1 Power Cord 67000013 1 12 feet of clear PVC tubing 5200116 1 Operating Manual 1800110 1 Calibration Certificate N A The following items are optional Check the order packing slip Qty Item Part Number 1 2H SP Scanning Probe complete 9300144 1 Shipping Case 9300145 1 Round isokinetic nozzle red T2E0 0572 1 Rectangular isokinetic nozzle blue T2E0 0798 1 NSF 1 round nozzle black T2E0 0005 1 2H SP Scanning probe T2SP 0881 After unpacking if anything is missing or appears to be damaged contact ATI Customer Service at 410 363 9696 Note ATI rec
20. e or care Operator required action Note Contains important information that if ignored can cause inaccurate readings Caution Contains information that if ignored can cause equipment damage Warning Contains information that if ignored can cause injury or death to those handling the equipment Conventions Window Indicates the information displayed in a window on the Control Panel lt Function gt indicates a button on the Control Panel vii Intentionally Left Blank viii Chapter 1 Digital Aerosol Photometer Overview Instrument Description The 2H is a forward light scattering linear photometer It operates on 100 to 240 Volts 50 or 60 Hz adjusting automatically The basic function of the 2H is to sample air or other gases and report the mass concentration of particulates in the sample This unit is also available in a nuclear version the 2H N The nuclear version is the same size and has the same features as the 2H plus a sealed sampling chamber and an additional ULPA filter to contain all contamination within the unit The 2H is compact and lightweight The instrument case is constructed of die cast aluminum and has a swing arm carrying handle that folds up under the case to tilt the unit for easy viewing The pressure sensitive keypad and large bright LED displays and indicators provide ease of operation and readability The auto ranging and one step zeroing features
21. eading when calculating the 100 value When L12 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between 0 and 120 on the display Press lt ENTER gt to set the selection and return to the parameter select menu L12 will be displayed Setting up the Alarm Functions 24 The 2H has an alarm feature which can alert the user when particle concentration exceeds a user selected Leakage value To set the alarm features perform the following steps 1 After system initialization press the lt ALARM gt function key The lt ALARM gt LED will flash and the current alarm setting ON or OFF will be displayed 3 Press the lt A gt Up and lt V gt Down function keys to change the displayed setting 4 If changing the alarm set point is not desired the lt ENTER gt function key may be pressed to return to sampling mode If this is the case press lt ENTER gt and proceed to step 8 5 If the alarm set point is to be changed or checked press the lt ALARM gt function key again to enter the set point mode 6 Press the lt A gt Up and lt V gt Down function keys to change the displayed set point 7 Press the lt ENTER gt key two times to return to the unit to sampling mode 8 Setup of the alarm is now complete When the measured concentration exceeds the set
22. ess lt ENTER gt to set the selection and return to the parameter select menu L6 will be displayed L7 Load Factor y Defaults Options Not enabled Indicating factory default loading has not been selected LOAD Enabled Indicating factory default loading has been selected Default Not enabled This option is used to restore the factory default settings to all the user programmable parameters When L7 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between and LOAD Press lt ENTER gt to set the selection and return to the parameter select menu L7 will be displayed Digital Aerosol Photometer Model 2H 21 L8 Software Revision Options None Default None This option is used to display the current revision used by the 2H firmware L9 Bargraph Display 22 Options OFF Disabled ON Enabled Default ON Enabled This option is used to enable or disable the analog bargraph display beneath the numeric portion of the Leakage display When L9 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between
23. eter ss 21 L7 Load Factory Defaults cn narran 21 L8 Software Revision 22 L9 Bargraph Displav iaa sonia alia Ac ia 22 L10 Leakage Display Intensity ec eeeeeeeee eee eeteeeeeeeteeeeeeaeeeeeeeee 23 LAA O PUDO THM ta scialli ia 23 L12 100 Purge Time sis 24 Setting up the Alarm Functions nan cnncc cnn 24 Changing the Reference nan narran 25 Upstream Aerosol Measurements DOP or PAO 25 Measuring Leakage with a User Defined Reference USER 26 Testing with the ZH osae enia EnS AE TEASE A i 27 Verifying the Upstream Concentration during Testing 27 Maintaining and Servicing the Aerosol Photometet cccssseeneessceees 28 Maintenance sise 28 General Maintenance Procedures nentrn nenene 28 SpeciticatiONS srra en raae a iii 30 Specifications iii ra 30 Accessories and Spare Parts 31 Figures Tables Accessories Sia ile et mn ea 31 Spare Parts for 2H SP Scanning Probe 31 Spare Parts KitTor2 Hi a ice AAA ANA is ios 32 Spare Parts Kitfor 2M N rarae ae e ii 32 Aerosol Correction Factors ss 33 For Technical or Application QUESTtIOns 33 Troubleshootingh c iirit eetecedec decd steneteadedevecusetesteaedecesteadacdvecusetestesedeceeaues 34 Controller Error MessageS
24. gt The unit will begin scanning for a 100 reference value Note If the error E4 is given then the 100 calibration failed The most likely reason for this error would be an aerosol concentration too low to take an accurate reading Press lt ENTER gt to clear the error The unit defaults back to the previous reference setting 4 After the 100 reference value has been successfully captured the lt 0 gt LED will blink indicating that the 0 reference must be calibrated 5 Switch the selector valve to CLEAR and press the lt ENTER gt button The unit will scan for the 0 reference value 6 After the unit has finished scanning for the 0 reference switch the selector valve to DOWNSTREAM The LEAKAGE display indicates the concentration as compared to the upstream value Digital Aerosol Photometer Model 2H Testing with the 2H After the 100 and 0 baselines have been established the unit is ready for testing operations During testing operations readings may be taken from either the Front Panel Display or the Scanning Probe lessening operator distraction Testing is performed as follows 1 Turn the selector valve to DOWNSTREAM to permit sampling through the Scanning Probe 2 Pass the end of the probe over the filter being tested at the rate required by the standard or recommended practice being employed 3 Read and record the data as it is displayed on either the pistol grip
25. h is specifically adapted to the destination country You are responsible for plugging the power cord into a matching receptacle To connect the Aerosol Photometer to electrical power do the following 1 Check to make sure the Aerosol Photometer is turned off Refer to figure 4 for the location of the power switch 2 Plug the power cord into a matching power outlet Warning Before connecting the power cord to the power outlet make sure the cord has not been cut or otherwise damaged during shipment Caution To prevent damage to the Aerosol Photometer make sure the voltage listed on the back panel matches the power outlet where you plug it in Digital Aerosol Photometer Model 2H 7 Connecting the Scanning Probe If using the Digital Aerosol Photometer 2H with the Scanning Probe connect the probe s electrical connector to the 12 pin connector on the front panel of the unit before applying power to the photometer Otherwise the display on the Scanning Probe will not function Connect the probe s sampling hose to the barbed DOWNSTREAM fitting to the right of the 12 pin connector The cable and sampling hose are bound as a single flexible umbilical Select the appropriate probe nozzle and screw it onto the threaded end of the flexible portion of the Scanning Probe Note When using the 2H SP Scanning Probe with the 2H the probe must be connected to the photometer before the power is turned o
26. lect function then lt A gt or lt V gt to change LO Run L1 Audible Alarm On Off L2 0 Sample Time 5 to 120 seconds L3 100 Sample Time 5 to 120 seconds L4 Decimal Places 3 or 4 L5 Internal Reference Current Selection Displayed L6 Hour Meter L7 Factory Defaults L8 Software Revision L9 Bar graph On Off L10 Display Intensity L11 Zero Purge Time 0 to 120 seconds L12 100 Purge Time 0 to 120 seconds Audible Alarm ON or OFF lt ALARM gt Displays Status On or Off lt A gt or lt V gt to change lt ENTER gt to exit lt ALARM gt Pressed a second time before lt ENTER gt displays Set Point 0 010 by default lt A gt or lt V gt to change lt ENTER gt Accept Alarm Set Point Displays On Off status again lt A gt or lt V gt to change lt ENTER gt Accept status and return to run mode ALARM LED will remain lit Note L1 to turn the audible portion of the alarm On or Off Internal Reference Set Selector Valve to CLEAR lt REF gt Blinks lt ENTER gt Calibration reagent PAO or DOP also USER or HIGH Use lt A gt or lt V gt to change 38 Digital Aerosol Photometer Model 2H lt ENTER gt Displays ug l of concentration to be displayed as 100 when sampled Use lt A gt or lt V gt to change lt ENTER gt lt 0 gt Blinks Ready for Testing USER is a stored sampled concentration saved by the user to be displayed as 100 This value is s
27. lectrical signal The signal is amplified and digitized then analyzed by a microprocessor to determine the intensity of the light scattered by the signal This signal is then compared to a reference signal to provide an output that is normalized by the reference signal A photometer is ideally suited to detect particulate matter in air or gas reporting the mass concentrations encountered on a display Particles from less than 0 1 micron to approximately 600 microns can be detected by the 2H Since the photometer reports concentration of particulate matter many applications are possible By using a baseline of 100 micrograms per liter of aerosol it is possible to directly read the concentrations of aerosol Sampling System A vacuum pump provides a sample flow rate of 1 cfm 28 3 liters per minute for the instrument It is an oil free dual head rotary vane pump with a direct coupled DC motor A selector valve on the front panel directs the airflow through the sampling system to the scattering chamber from three possible sources The CLEAR position directs clean air from an internal ULPA filter to the scattering chamber for zeroing the instrument The UPSTREAM position permits sampling of the air above the filter being challenged and the DOWNSTREAM position permits sampling of the air that penetrates the filter Light Scattering Chamber LSC The scattering chamber is not only an integral part of the sampling system it is a major compone
28. n Otherwise the 2H will not detect the probe and no display will be observed on the pistol grip If this occurs switch the power off verify that the probe is connected properly and then switch the power back on Digital Aerosol Photometer Model 2H Intentionally Left Blank Digital Aerosol Photometer Model 2H Chapter 3 Description of the Digital Aerosol Photometer Controls and Indicators Front Panel Connectors and Indicators 10 Front Panel Display Bar Graph Display Function Keys Selector Valve Upstream Sample Port Scanning Probe Ground Jack Scanning Probe Connector Downstream Sample Port LT ES CT peg LEAKAGE Optics Indicator Light Optics Indicator Light Figure 2 Front Panel Aerosol Photometer 2H 1 Front Panel Display Indicates leakage readings and error messages 2 Bar Graph Display Displays an analog representation of the leakage to aid in isolating leaks 3 Function Keys Used for setting operating parameters and initiating program routines 4 Selector Valve Selects the sample source 5 Upstream Sample Port Connects to the sample tubing that is used to measure the upstream aerosol concentration Digital Aerosol Photometer Model 2H 6 Probe Ground Jack Electrical ground connection for scanning probe shielding Required for CE compliance 7 Scanning Probe Connector Electrical connection for the optional Scanning Probe
29. nt 5100001 Male threaded end segment 5100002 Female threaded end segment 5100004 Male close nipple 5100101 Replacement probe screen 5 16 diameter T2SP 0883 Replacement probe screen 1 7 16 diameter T2SP 0884 Replacement probe screen 3 1 32 diameter T2SP 0885 Scanning probe extension 12 ft T2SP 1095 NSF 49 1992 Scanning probe nozzle T2E0 0005 1 Isokinetic round red T2E0 0572 NSF 49 2002 Isokinetic rectangular blue T2E0 0798 Screen holder assembly 0600287 Digital Aerosol Photometer Model 2H 31 Spare Parts Kit for 2H Qty ltem Part Number 1 ULPA filter internal reference air filter 0600424 2 Pump Exhaust Filter internally mounted 5500002 filter 2 HEPA filter 36mm 5500180 1 Replacement Probe screen 5 16 T2SP 0883 1 Replacement Probe screen 1 7 16 T2SP 0884 i Replacement Probe screen 31 32 T2SP 0885 Recommended one year consumable parts Contact ATI Customer Service Department for more information Spare Parts Kit for 2H N Qty Item Part Number 2 ULPA filter internal reference air filter 0600424 2 Selector valve T2G0 0931 2 Sealed cone w fittings T2GN 0949 4 Brass fittings T2G0 0907 8 Brass fittings 5100006 25 ft Poly flo tubing 5200102 5ft PVC tubing clear 5200116 Recommended one year consumable parts Contact ATI Customer Service Department for more information 32 Digital Aerosol Photome
30. nt in itself The scattering chamber is a complex electro optical unit that consists of a pair of hollow cones connected at the apexes A pair of collimating lenses first straightens the light emerging from the light source and then focuses it at the center of the sampling cone An aperture forms a dark cone around the photomultiplier preventing light from arriving directly on the photomultiplier A condensing lens opposite the LED source focuses light scattered into this dark cone onto the photomultiplier tube Amplifier The signal from the photomultiplier tube in the scattering chamber is delivered to an FET operational amplifier capable of a gain increase of 2 500 000 The amplifier augments the phototube signal in a linear fashion and delivers the signal to an analog to digital converter that is then sent to the microprocessor 4 Digital Aerosol Photometer Model 2H Capabilities Note Before attempting to operate this unit become familiar with the features and functions The Aerosol Photometer 2H will measure percentage leakage or absolute aerosol concentration Input Output features e Alarm audible and visual When a reading exceeds the user selected alarm point the display will flash on and off and a tone will sound if enabled e Serial Data Output Leakage data is sent out the unit s serial port This data can be logged on ATI s DASI or DAS2 data acquisition systems The following are screenshots of th
31. of the probe or the Front Panel Display Once the 100 baseline has been properly defined the display readings are given directly in leakage Note Most current standards and recommended practices require leaks of greater than 0 01 to be identified and repaired Verifying the Upstream Concentration during Testing Turn the Selector Valve to the UPSTREAM position The LEAKAGE display shows the concentration of the upstream challenge aerosol in percent of upstream calibration The photometer is comparing the real time concentration of the upstream challenge to the concentration of this same source when it was initially used to establish the 100 baseline In other words it is comparing the current concentration level to the starting level If the reading seems reasonable normal testing may be resumed by turning the Selector Valve back to the DOWNSTREAM position If the concentration of the challenge aerosol has changed significantly the upstream source should be examined for the cause Once the situation has been corrected the upstream challenge aerosol should be restarted stabilized and then used to re establish the 100 baseline as described previously Digital Aerosol Photometer Model 2H 27 Chapter 5 Maintaining and Servicing the Aerosol Photometer Maintenance Weekly e Clean the scanning probe screens These are located on the black and red circular scanning probe nozzles e
32. ome of these parameters have been factory set but can be optionally reset by the operator If required these parameters can be returned to the factory default setting at any time Other parameters are accessible for programming only at the factory The eleven parameters and their default settings are listed in this addendum Table 3 2H Programmable parameters and associated functions Parameter Function Valid Range Default Value LO Run LI Audible Alarm ON OFF OFF L2 0 Sample Time 5 120 seconds 10 seconds L3 100 Sample Time 5 120 seconds 10 seconds L4 Decimal Places 3 4 4 L5 Internal Reference DOP PAO USER DOP HIGH L6 Hour Meter L7 Load factory defaults L8 Software Revision L9 Bar Graph Display ON OFF ON L10 Display Intensity Adjustment 1 8 6 L11 0 Purge Time 0 120 seconds 0 L12 100 Purge Time 0 120 seconds 0 To enter the parameters setting menu proceed as follows 1 Press lt A gt function key Up arrow The display will read 2 Press lt ENTER gt function key The first parameter LO will be displayed on the LEAKAGE indicator Note If the lt ENTER gt key is not pressed within about 3 seconds the unit will assume this was an accidental key press and return to sampling mode 3 The lt A gt Up and lt V gt Down function keys are used to scroll through the parameters from LO to L12
33. ommends that you save all packing materials for future use such as shipping the unit back for annual calibration Warning If the unit is used in a manner not specified within the user s manual the protection offered by the equipment may be impaired This part number applies to the 110V version The part number for the 220V version is 9300134 This part number applies to the 110V version The part number for the 220V version is 9300148 gt This part number applies to the 110V version The part number for the 220V version is 6700133 6 Digital Aerosol Photometer Model 2H Installation Before you begin You will need the following items to set up the Aerosol Photometer Model 2H An electrical outlet 110 VAC or 220 VAC O 2H SP Scanning Probe or PVC Sampling Tube O Operating Range 35 to 105 degrees Fahrenheit O An environment with less than 75 relative humidity Note High ambient temperatures may create instability in the readings Connecting Electrical Power Voltage and current requirements for the Aerosol Photometer Model 2H are O 100 to 120 VAC 5 amps or O 220 to 240 VAC 2 5 amps The Aerosol Photometer automatically adjusts to operate at the correct AC voltage for the destination country given this voltage is within the specifications described in Appendix A This voltage is noted on a label attached to the back panel of the instrument The power cord contains a plug whic
34. r light source is not working If the scattering chamber light source has burned out the operator will witness a lack of response on the unit s display Recommended Spare Parts Spare components are not supplied with the 2H or the 2H N nuclear unit and must be ordered separately See Appendix B for a list of recommended spare parts that may be purchased in kit form or individually This list includes only parts replaceable by the user in the field Other repairs requiring instrument or component recalibration must be performed at an ATI service center Cleaning the 2H SP Scanning Probe Screens The 2H SP Scanning Probe is a rugged low maintenance device The probe contains a coarse wire screen near the base of the flexible neck to prevent fibers and large particles from being drawn into the photometer In addition there are screens in each of the two round nozzles that thread onto the flexible neck The blue rectangular nozzle contains no screen If the screens accumulate a significant amount of debris and become partially clogged it can interfere with the airflow and affect the accuracy of the photometer and may put an unnecessary strain on the vacuum pump Note It is recommended that all screens be wiped clean with a lint free cloth before use each day If the screens are punctured replace them immediately Spare nozzles and replacement scanning probe components can be ordered from ATI see Appendix B To access
35. t V gt and lt ENTER gt keys contain no indicator LED The LEAKAGE display is an array of high visibility LED s that forms a display screen The Front Panel Display shows alphanumeric messages Underneath it a Bar Graph Display gives a visual indication of the internal photometer cycling or an analog representation of quantity or percentage The Scanning Probe contains an unlabeled display on the pistol grip that is a half scale duplicate of the LEAKAGE Indicator The two displays are driven by the same electronics and will always read exactly the same Digital Aerosol Photometer Model 2H Rear Panel Connectors Cooling Fan Vacuum Pump Exhaust Calibration Sticker Serial Number Label Power Connector Power Switch Fuse Block Figure 4 Rear Panel Aerosol Photometer 2H 1 Cooling Fan Maintains airflow through the unit s enclosure to stabilize electronics 2 Calibration Sticker Displays the current calibration date and the due date for the next calibration 3 Power Connector Connects to the Power Cord 4 Fuse Block Contains two 2 amp slow blow fuses 5 Vacuum Pump Exhaust Allows a filter to be installed to eliminate particulate emissions 6 Serial Number Label Lists the model serial number and utility requirements 7 Power Switch Turns the system power on and off The rear panel contains a recessed 3 pronged male Power Connector with an integral fuse block and power switch an
36. ta regarding the Digital Aerosol Photometer 2H Table 4 Specifications of the Digital Aerosol Photometer Model 2H Dimensions L x W x H English inches 13 5 x 9 5 x 5 0 Metric centimeters 34 3 x 24 1 x 12 7 Weight 2H 15 5 lbs 7 0 kg TDA 2SP 2 5 lbs lbs 1 1 kg Input Power 90 to 250 volts AC 50 or 60 Hz 1 5 amps Fuse 250 volts 2 0 amps slow blow 5 x 20 mm Dynamic Range 0 00005 to 120 micrograms per liter Accuracy 1 of full scale for the amplifier decade in use Repeatability 0 5 full scale for the amplifier decade range in use Sampling rate 1 CFM 28 3 L min Data Output RS 232 Port settings 2400 8 N 1 Specifications are subject to change without notice 30 Digital Aerosol Photometer Model 2H Appendix B Accessories and Spare Parts Accessories List Description Part Number Spare Parts for 2H SP Scanning Probe Shipping case 9300145 2H Spare parts kit see list below for components 9300142 2H N Spare parts kit see list below for components 9300143 Scanning probe assembly complete with 3 nozzles 9300144 Replacement Line Cord 120V USA 6700001 Replacement Line Cord 220V Europe T2E0 0063 4 ID PVC sample tubing specify length 5200116 Straight through serial cable 6 ft T2G0 1120 Fuse 2 amp 5 x 20 mm 6400001 Filter HEPA 36mm rear exhaust filter 5500180 Item Part Number Segme
37. ter Model 2H Appendix C Aerosol Correction Factors For Technical or Application Questions Table 5 Aerosol Correction Factors for the Digital Photometer Model 2H dre Generator Pressure DOP Internal e add Lea Factors Reference Setting DOP DEHP 1 00 100 PAO Emery 3004 1 15 73 DOS DEHS 1 22 96 Mineral Oil 1 10 90 Ondina Oil Ondina EL 1 34 79 Kaydol 1 18 92 Polyethylene Glycol PEG400 1 33 111 Paraffin Oil 1 21 89 Corn Oil 1 17 88 The above values are for use when substitute liquids are used in place of the liquid specified for the Factory equipment calibration and setup The generator pressure factors are used as multipliers for the applied pressure to a Type I A Laskin nozzle generator Example e DOP 20 psi applied with dilution airflow of 135 cfm yields 100 ug l e PAO 23 psi 20 psi x 1 15 correction factor applied with dilution airflow of 135 cfm yields 100 ug 1 The above DOP settings are required for a 100 reading of 100 ug l of the DOP substitute liquid Example e DOP with DOP selected 100 required for 100 response to 100 ug l e DOS with DOP selected 96 required for a 100 response to 100 ug l of DOS Note The above correction factors apply only to air operated generators Ifa thermal type generator TDA 5A or TDA 5B is being used the upstream concentration must be sampled to obtain a 100 setting Digital Aerosol Photometer Model 2H 33 Appendix D
38. ter select menu L1 will be displayed Digital Aerosol Photometer Model 2H L2 0 Sampling Time Options 5 120 seconds Default 10 seconds Establishes the period over which the 0 aerosol sample is average When L2 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between 5 and 120 on the display Press lt ENTER gt to set the selection and return to the parameter select menu L2 will be displayed L3 100 Sample Time Options 5 120 seconds Default 10 seconds Establishes the period over which the 100 aerosol sample is averaged This frequency is relative to the cycling of the system microprocessor and is not time dependent When L3 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to move the displayed setting between 5 and 120 on the display Press lt ENTER gt to set the selection and return to the parameter select menu L3 will be displayed Digital Aerosol Photometer Model 2H 19 L4 Decimal Places to be displayed Options JA Default 4 This parameter is used to select either 3 or 4 decimal places on the Leakage Display When L4 is
39. the screen in the flexible neck unscrew the flexible extension from the probe body A small tool may be necessary to reach into the neck to remove and wipe the surface of the screen Replacing the Main Power Fuses Position the 2H with the rear panel readily accessible Locate the fuse block at the center of the power entry connector Press the top and bottom tabs toward the center and pull the fuse block straight out from the power entry connector The two fuses ATI part 6400001 will be exposed for inspection and or replacement Replace the fuse block by gently inserting it back into the power entry connector until the tabs snap back into their original location Replacing the HEPA Exhaust Filter Position the 2H with the rear panel readily accessible Rotate the HEPA exhaust filter in a counter clockwise direction until the threads are free of the rear panel bushing Install the new replacement filter ATI part 5500123 in the same orientation as the filter that was replaced Care should be taken to avoid cross threading the filter housing When installed correctly a cylindrical well should be visible through the filter port This design directs exhausted airflow to the outside of the filter media core providing greater surface area and prolonging service life Digital Aerosol Photometer Model 2H 29 Appendix A Specifications Specifications The following specifications which are subject to change describe the most important da
40. tored in memory until a new value is sampled and saved by the user To set After completing the setting 100 procedure below Press the lt REF gt and USER will be displayed Press lt ENTER gt lt 0 gt will blink turn the Selector Valve to CLEAR and press lt ENTER gt HIGH allows sampling of concentrations above 130ug L exceeding 200ug L This setting should only be used for sampling quickly and sparingly as such concentrations will adversely affect the cleanliness of the optics Setting 100 Connect Upstream Sample Line amp set Selector Valve set to UPSTREAM lt 100 gt lt 100 gt key LED flashes lt ENTER gt Bar graph scans The unit averages 100 for a time defined by the L3 setting When the lt 0 gt LED flashes turn the Selector Valve to CLEAR lt ENTER gt Sets 0 Note This setting can be saved by pressing lt REF gt lt ENTER gt and resetting 0 See USER above Ready for Testing Digital Aerosol Photometer Model 2H 39 Optics and Flow LEDs Optics LED Green Optics clean Less than 10 000mg of aerosol has moved through the scattering chamber Orange More than 10 000mg but less than 17 000mg of aerosol has moved through the scattering chamber Red More than 17 000mg of aerosol has moved through the scattering chamber It is strongly recommended that the unit be serviced Note The unit can continue to be operated by using the SE
41. zero baseline may have drifted the operator may re zero the instrument at any time by positioning the selector valve to the clear position pressing the lt 0 gt button and pressing lt ENTER gt Warning DE The unit should be placed on a flat stable surface with the area to be monitored within reach of the sample lines Digital Aerosol Photometer Model 2H 1 Insert the UPSTREAM sample line into the upstream aerosol air mixture Note The sample line should be as close to the upstream side of the filter as possible Turn the Selector Valve to the UPSTREAM position This switches the sample airflow to the UPSTREAM sampling port on the front panel The LEAKAGE display indicates the upstream concentration as compared to the reference that was set in the initialization section Note Adjust aerosol for desired challenge aerosol concentration Measuring Leakage with a User Defined Reference USER 1 Insert the UPSTREAM sample line into the upstream aerosol air mixture Note The sample line should be as close to the upstream side of the filter as possible Turn the Selector Valve to the UPSTREAM position This switches the sample airflow to the UPSTREAM sampling port on the front panel The LEAKAGE display indicates the upstream reading Press the lt 100 gt button and press lt ENTER
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