OPERATOR`S MANUAL 2H and 2H-N Aerosol
Contents
1. 5 4 Recommended Spare Parts 25 5 5 Cleaning the TDA 2SP Scanning Probe Screens 26 5 6 Replacing the Main Power Fuses 26 5 7 Replacing the HEPA Exhaust Filter 26 A 1 SPECIFICATIONS 27 A 2 TROUBLESHOOTING 28 A 3 QUICK SETUP REFERENCE 29 A 4 ACCESSORY LIST 31 A 5 WARRANTY 33 A 6 RS 232 COMMUNICATION 34 A 7 AEROSOL CORRECTION FACTORS 35 A 8 DECLARATION OF CE CONFORMITY 36 1800110 4 Revision F Model 2H Guidelines to the use of this manual SYMBOLS The following symbols are used throughout the manual to draw attention to items or procedures that require special notice 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 s Warning Contains information that if ignored can cause injury or death to those e 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 1800110 5 Revision F Model 2H 1 INSTALLATION 1 1 REQUIREMENTS NOTE High ambient temperatures may create instability in the readings The 2H requires the following for proper operation e Stable electrical power at 90 240 VAC single phase 50 60 Hz 5 amps e Environment Operating Range 35 to105 Fahrenheit 1 6 to 40 6 Celsius with less than 75 relative humidity 1 2 UNPACKIN2. small tool may be necessary to reach into the neck to remove and wipe the surface of the screen 5 6 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 2 fuses 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 5 7 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 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 1800110 26 Revision F Model 2H 1 SPECIFICATIONS Dimensions L x W x H 13 5 in x 9 5 in x 5 0 in 34 3 cm x 24 0 cm x 12 7 cm Weight 2H Aerosol Photometer standard use 2H N Aerosol Photometer nuclear use TDA 2SP Scanning Probe Input Power 90 to 250 volts AC 50 or 60 Hz 1
3. A gt Up and lt V gt Down function keys are used to scroll through the parameters from LO to L12 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 gt Down function keys 6 When the desired setting is displayed press the lt ENTER gt function key to store the setting 7 When the setting of the parameters is complete scroll to LO and press lt ENTER gt The unit will return to sampling mode 4 3 CHANGING SETUP PARAMETERS LO Exit Parameter Menu 1800110 16 Revision F Model 2H 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 Options Off 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 lt ENTER gt function key to access the stored setting Press the lt A gt Up and lt V gt Down function keys to change the displayed setting between ON and OFF Press lt ENTER3 to set the selection and return to the parameter select menu L1 will be displayed 12 0 Sample Time Options 5 120 Default 10 Esta
4. 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 measuring 13 5 x 9 5 x 5 0 inches 34 3 x 24 0 x 12 7 cm and weighing only 15 5 Ibs 7 0 kg 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 up 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 assure the accuracy of all readings WARNING If the unit is used in a manner not specified within the user s manual the ka protection offered by the equipment may be impaired 2 2 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 2 2 1 Light Scattering Chamber LSC Th
5. lt ENTER gt The unit will begin scanning for a 100 reference value Note If error E4 is given then 100 calibration failed The most likely reason this would happen is if there is not enough aerosol present to take an accurate reading Press lt ENTER gt to clear the error The unit defaults back to the previous reference setting 1800110 22 Revision F Model 2H 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 lt DOWNSTREAMS The LEAKAGE display indicates the concentration as compared to the upstream value 4 8 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 the selector valve to DOWNSTREAM to permit sampling through the Scanning Probe 2 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 of the probe or the F
6. of response on the unit s LEAKAGE display 5 4 RECOMMENDED SPARE PARTS Spare components are not supplied with the 2H or the 2H N nuclear unit and must be ordered separately See section A 4 for a list of recommended spare parts that may be purchased in kit form or individually These lists include only parts replaceable by the user in the field Other repairs requiring instrument or component recalibration must be performed at an ATI service center 1800110 25 Revision F Model 2H 5 5 CLEANING THE TDA 2SP SCANNING PROBE SCREENS The TDA 2SP Scanning Probe is a rugged low maintenance device The probe contains a course 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 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 Section A 4 To access the screen in the flexible neck unscrew the flexible extension from the probe body A
7. 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 products or any inability to use them either separately or in combination with other equipment or materials or from any other cause AIR TECHNIQUES INTERNATIONAL Division of Hamilton Associates Inc Owings Mills MD U S A Model Serial Number Date Purchased Purchaser 1800110 33 Revision F Model 2H 6 RS 232 COMMUNICATION The 2H serial output is formatted as a continuous string of ASCII numeric characters The recommended method for capturing this data is to use the DAS1 or DAS2 data acquisition system from ATI Shown below are screenshots from the DAS1 on a pocket PC Contact ATI customer service for details and other information 41110 EF 4 11 00 gt Live Mode Live Mode Selected building 115 Selected building 115 Leakage 1 2345 Leakage 12 3450 ako i Information 123 1 2 3 4 5 6 7 9 v TDA 2G TDA 100P TDA 9
8. 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 1 That any claim of defect under this warranty is made within thirty 30 days after discovery thereof and that inspection by ATI if required indicates the validity of such claim to ATI s satisfaction and That the defect is not the result of damage incurred in shipment to or from our factory and 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 and 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 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 option any defective equipment that fails within the warranty period
9. unit and restart the system Downstream Sample Port Connects to the sample tubing or optional Scanning Probe that is used to measure the downstream sample Optics indicator light Corresponds to the cleanliness of the optics Green Light Less than 10 000mg of aerosol has moved through the 1800110 10 Revision F Model 2H 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 b Note These values are approximate Actual mass may vary with different airflow rates and aerosols Flow indicator light Displays green when flow is within 5 of 1 CFM yellow when flow is from 5 to 10 of 1 CFM and red when flow is more than 10 above or below 1 CFM 8 Function Keys Used for setting operating parameters and initiating program routines 9 Bar Graph Display Displays an analog representation of the leakage to aid in isolating leaks 10 Front Panel Display Indicates leakage readings and error messages 3 2 FRONT PANEL CONTROLS AND INDICATORS The front panel contains seven pressure activated function keys The lt 0 gt lt 100 gt lt REF gt and lt ALARM S 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
10. 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 range in use Repeatability 0 5 full scale for the amplifier decade range in use Sampling Rate 1 CFM 28 3 LPM Data Output RS 232 Port settings 2400 8 N 1 Continuous output RS 232 Cable Requirement 15 5 Ibs 7 0 kg 15 5 Ibs 7 0 kg 2 5 lbs 1 1 kg A straight through DB 9 serial cable is required ATI part number T2G0 1120 or equivalent 1800110 27 Revision F Model 2H A 2 TROUBLESHOOTING CONTROLLER Error Messages ERROR CODES SYSTEM PROBLEMS Problems Cause Corrective Action E1 Calibration flags not The unit has not been calibrated Return the unit to ATI or set or the unit has lost memory Authorized service center for repair and service as soon as possible E2 LSC voltage not stable Concentration readings are not stable enough to perform a reliable 100 or 0 1 Ensure that the selector valve is in the correct position and try again Check the aerosol source Optics Dirty Sufficient aerosol condensation and or particulates have built up on the internal optics such that a cleaning is highly recommended 1 Return the unit to ATI for repair and service as soon as possible E4 100 calibration There is insufficient aerosol for 1 Check the aerosol source failed t
11. 9M TDA 99M Mode gt File View Probe Log Alternatively this data can be captured with a generic terminal The required port protocol is 2400 N 8 1 1800110 34 Revision F Model 2H A 7 AEROSOL CORRECTION FACTORS fd Polyethylene Glycol PEG400 1 33 111 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 III 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 l The above DOP settings are required for a 100 reading of 100 ug l of the DOP substitute liquid Example 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 type generator TDA 5A TDA 5B is being used the upstream concentration must be b Note The above correction factors apply only to air operated generators If a thermal sampled to obtain a 100 setting 1800110 35 Revision F Model 2H A 8 DECLARATION OF CE CONFORMITY We AIR TECHNIQUES INTERNATIONAL 11403 Cronridge Drive Owings Mills Maryland 21117 2247 USA Tel 410 363 9696 Fax 410 363 9695 Website http www atitest co
12. G b NOTE Save all packaging material for future use Carefully unpack and remove the 2H Aerosol Photometer and all accessories from its shipping container If the instrument has been damaged in transit notify the shipper immediately Make sure the following items are included with both the 2H 9300133 and the 2HHP 9300134 1 1 power cord 6700001 2 12 feet of clear PVC tubing 5200116 3 Operating Manual 1800110 4 Calibration certificate The following items are optional Check the order packing slip 1 Shipping case 9300145 2 2H SP Scanning Probe complete 9300144 a 1 round isokinetic nozzle red T2E0 0572 b 1 rectangular isokinetic nozzle blue T2E0 0798 1NSF 1 round nozzle black 2 0 0005 d 1 Scanning probe T2SP 0881 If any of these items are on the order packing slip but missing from the shipment contact ATI immediately at Air Techniques International Division of Hamilton Associates 11403 Cronridge Drive Owings Mills Maryland 21117 2247 U S A Tel 410 363 9696 Fax 410 363 9695 www atitest com 1800110 6 Revision F Model 2H 2 GENERAL INFORMATION 2 1 DESCRIPTION The 2H is a forward light scattering linear photometer It operates on 100 to 240 VAC 50 or 60 Hz adjusting automatically The basic functions of the 2H are to sample air or other gas and report the concentration of particulates in the sample This unit is also available in a nuclear version the 2H N The nuclear version
13. OPERATOR S MANUAL for the 2H and 2H N Aerosol Photometers MRTA Air Techniques International Division of Hamilton Associates Inc 11403 Cronridge Drive Owings Mills MD 21117 USA TEL 410 363 9696 FAX 410 363 9695 www atitest com info atitest com 1800110 Revision F Model 2H This page intentionally left blank 1800110 2 Revision F 11 12 2 1 2 2 3 1 3 2 3 3 3 4 3 5 4 1 4 2 4 3 4 4 4 5 4 6 4 7 4 8 4 9 Model 2H Table of Contents INSTALLATION Requirements Unpacking GENERAL INFORMATION Description Sampling System 2 2 1 Light Scattering Chamber LSC 2 2 2 Electronics 2 2 3 Theory of Operation 2 2 4 Filter Leak Testing The Most Common Application 2 2 5 Capabilities 2 2 6 Input Output features SETUP Locations amp Functions Front Panel Controls and Indicators Scanning Probe connections Rear Panel Connections Side Connection OPERATION Initialization Setup Parameters Changing Setup Parameters Setting Up the Alarm Functions Changing the Reference Internal Reference Measurements DOP or PAO Measuring Leakage User Defined Reference USER Testing with the 2H Verifying the Upsream Concentration During Test 1800110 3 OOCMAMoONnN NI NI N A A OO N N N N N N FF FF FE Fe Ww wo N N m A A wo m Revision F Model 2H 5 MAINTENANCE 25 5 1 Weekly 25 5 2 Annually 25 5 3 General Maintenance procedures 25
14. PA filter The instrument is now ready to detect and quantify leakage on the downstream side of the filter as a percentage of the available upstream aerosol air mixture A scanning test is performed using the optional 2H SP hand held scanning probe The entire area of the filter is sampled by passing the probe in overlapping strokes across the face and perimeter of the filter The end of the probe should be held within one inch of the filter face and scanned at a traverse rate of no more than 10 feet per minute 2 inches per second Overlapping passes should be made over the entire filter face around the periphery of the filter along the bond between the filter pack and the frame and around the seal of the filter 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 screwed onto the end of the flexible probe The round black nozzle is 1 inch 1800110 8 Revision F Model 2H 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 2 2 5 Capabilities NOTE Before attempting to operate this unit become familiar with the features and functions Measuremen
15. alog bargraph display beneath the numeric portion of the Leakage display 1800110 19 Revision F Model 2H 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 0 and 1 on the display Press lt ENTER3 to set the selection and return to the parameter select menu L9 will be displayed L10 Leakage Display Intensity Options 1 8 Default 6 L10 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 and 8 on the display Press lt ENTER3 to set the selection and return to the parameter select menu L10 will be displayed 111 0 Purge Time Options 0 120 Default 0 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 change the displayed setting between 0 and 120 seconds Press lt ENTER gt when done L11 will be displayed 112 100 Purge Time Options 0 120 Default 0 1800110 20 Rev
16. are used to scroll among 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 lt V gt and lt ENTER gt keys contain no indicator LED The LEAKAGE display is an array of high visibility LEDs that forms a display screen The Front Panel Display shows alphanumeric messages Below it is a Bar Graph Display that gives a visual indication of 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 The Selector Valve the Scanning Probe connector and the two barbed fittings are discussed later 3 3 SCANNING PROBE CONNECTIONS If using the 2H with the Scanning Probe connect the probe s electrical connector to the 12 pin connector on the front panel of the 2H 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 1800110 11 Revision F Model 2H 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 f
17. blishes 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 change the displayed setting between 5 and 120 Press lt ENTER gt when done L2 will be displayed L3 100 Sample Time Options 5 120 Default 10 Establishes the period over which the 100 aerosol sample is averaged When L3 is displayed in the parameter menu press the lt ENTER gt function key to access the stored setting 1800110 17 Revision F Model 2H Press the lt A gt Up and lt V gt Down function keys to change the displayed setting between 5 and 120 Press lt ENTER gt when done L3 will be displayed L4 Decimal Places to be displayed Options 3 or 4 Default 4 This parameter is used to select either 3 or 4 decimal places on the Leakage Display When L4 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 3 and 4 on the display 3 0 001 4 0 0001 Press lt ENTER3 to set the selection and return to the parameter select menu L4 will be displayed L5 Aerosol Reference Selection Options DOP PAO USER HIGH Default DOP When L5 is displayed in the parameter menu press the lt ENTER gt function k
18. e Setup of the alarm is now complete When the measured concentration exceeds the set point the display with flash If the audible alarm parameter L1 is set to ON a tone will also be heard 4 5 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 Press the lt REF gt function key The REF LED will flash and the display will go blank 2 Press the lt ENTER gt function key If the lt ENTER gt key is not pressed within about three 6 3 seconds the unit will return to sampling mode 3 Use the lt A gt Up and lt V gt Down function keys to select the desired reference 4 5 Press the lt ENTER gt function key Use the lt A gt Up and lt V gt Down function keys to select the desired internal reference factor The default value is 100 Press the lt ENTER gt function key The zero LED will begin to blink indicating that it is time to set the zero reference Verify that the selector valve is set to clear 1800110 21 Revision F Model 2H 7 Press lt ENTER gt 8 The bar graph display will scan to indicate that the unit is sampling the zero reference value Upon completion the unit will return to the sampling mode 4 6 UPSTREAM AEROSOL MEASUREMENTS DOP OR PAO by Note Do not perform the steps in this section until completing
19. e scattering chamber is not only an integral part of the sampling system it is a major component 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 1800110 7 Revision F Model 2H 2 2 2 Electronics The signal from the photomultiplier is amplified and delivered to a signal conditioning analog to digital converter that is then sent to the microprocessor 2 2 3 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 electrical 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 repor
20. ey to access the stored setting b Note Refer to section 4 5 page 20 changing the reference to change the selection or reestablish internal reference See A 7 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 1800110 18 Revision F Model 2H L6 Hour Meter Options N A Default N A Displays the total running time for the unit When L6 is displayed in the parameter menu press lt ENTER gt function key to display the hour value L7 Load Factory Defaults Options NOT enabled indicating factory default loading has NOT been selected LOAd Enabled indicating factory default loading has been selected Default Not enabled 1 7 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 Press the lt A gt Up and lt V gt Down function keys to move between and LOAd Press lt ENTER3 to set the selection and return to the parameter select menu L7 will be displayed L8 Software Revision Options N A Default N A L8 displays the current revision that is being used by the 2H main firmware L9 Bargraph Display Options OFF Disabled ON Enabled Default ON Enabled L9 is used to enable or disable the an
21. han 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 SETTING 100 procedure above Note 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 1800110 30 Revision F Model 2H 4 ACCESSORY LIST 2H N Spare parts kit see list below for components robe aonb comple wit Somes __ 6 280 0005 NSF 49 1992 Scanning probe nozzle 1 Isokinetic round red kines restr _ near 2v O 14 ID PVC sample tubing specify length Straight through serial cable 6 ft Fuse 2 amp 5 x 20 mm 2H Spare parts kit Recommended 1 year consumable parts 9300142 i 5 16 diameter T2SP 0883 1 7 16 diameter T2SP 0884 1 2 2 1 1 1800110 31 Revision F Model 2H 31 32 diameter T2SP 0885 1 For use with 2H SP only Scanning Probe flex probe segments Segment 5100001 Male threaded end segment 5100002 Female threaded end segment 5100004 Male close nipple 5100101 1800110 32 Revision F Model 2H A 5 WARRANTY International Warranty Air Techniques International Air Techniques International hereinafter referred to as ATI warrants
22. he unit to capture a reliable 2 Use a higher 100 value for the USER concentration as the reference 100 reference 1800110 28 Revision F 3 Model 2H 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 select function then lt A gt or lt V gt to change LO 11 12 L3 L4 L5 L6 L7 L8 L9 L10 L11 L12 Run Audible Alarm On Off 0 Sample Time 5 to 120 seconds 100 Sample Time 5 to 120 seconds Decimal Places 3 or 4 Internal Reference Current Selection Displayed Hour Meter Factory Defaults Software Revision Bar graph On Off Display Intensity Zero Purge Time 0 to 120 seconds 100 Purge Time 0 to 120 seconds AUDIBLE ALARM ON or OFF lt ALARM gt Displays Status On or 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 Use 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 lt ENTER gt Dis
23. ision F Model 2H Set the length of time for the system to run before taking reading 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 change the displayed setting between 0 and 120 seconds Press lt ENTER gt when done L12 will be displayed 44 SETTING UP THE ALARM FUNCTIONS 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 lt ALARM gt function key 2 The ALARM LED will flash and the current alarm setting ON or OFF will be displayed Press the lt A gt Up and lt V gt Down function keys to change the displayed setting 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 Ifthe alarm set point is to be changed or checked press the lt ALARM gt function key again to enter the set point mode Press the lt A gt Up and lt V gt Down function keys to change the displayed set point Press the lt ENTER gt key two 2 times to return to the unit to sampling mode The red LED over the ALARM key will remain illuminated to indicate the alarm is activ
24. l begin sampling and sending data via the serial port 4 2 SETUP PARAMETERS The 2H has twelve 12 operating parameters not counting LO eight 8 of which are programmable by the operator to facilitate setting up the instrument for operation Some 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 1800110 15 Revision F Model 2H accessible for programming only at the factory The twelve parameters are listed in the table below Valid ranges and default settings for each parameter are also listed where applicable Parameter Description Valid Range Default Value LO Run Ll 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 L6 Hour Meter L7 Load Factory Defaults L8 Software Revision L9 Bar Graph Display ON OFF ON L10 Display Intensity 1 8 6 Lil 0 Purge Time 0 120 0 L12 100 Purge Time 0 120 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 LO will be displayed b NOTE If the lt ENTER gt key is not pressed within 3 seconds the unit will return to sampling mode 3 The lt
25. lexible portion of the Scanning Probe Note When using the TDA 2SP Scanning Probe with the 2H the probe must be connected to the photometer before the power is turned on Otherwise the 2H will not amp 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 1800110 12 Revision F Model 2H 3 4 REAR PANEL CONNECTIONS Figure 2 Rear Panel Cooling Fan Maintains airflow through the unit s enclosure to stabilize electronics Power Connector with Connects to the Power Cord Fuse Block Contains 2 amp fuse and spare fuse Power Switch Rocker Switch Turns system power on and off Serial Number Label Lists the model and serial number Vacuum Pump Exhaust Allows a filter to be installed to eliminate particulate emissions ae ae The rear panel contains a recessed 3 pronged male Power Connector with an integral fuse block and power switch and a Vacuum Pump Exhaust HEPA Filter CAUTION The 2H should always be positioned so that the Power Switch located on A the rear panel is readily accessible in the event the unit needs to be powered off quickly 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 virtua
26. lly 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 1800110 13 Revision F Model 2H 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 3 5 SIDE CONNECTION Figure 3 RS 232 Port RS 232 Port 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 to either one of ATI s data acquisition systems the DAS or DAS2 Contact ATI or your local representative to learn more about data logging options If using a terminal program to receive this data 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 1800110 14 Revision F Model 2H 4 OPERATION 4 1 INITIALIZATION If the Scanning Probe is being used connect it to the Scanning Probe Connector and the Downstream Port Verify that the Selector Valve is in the CLEAR position Apply power to the 2H by setting the Power Switch to the 1 On po
27. m declare under our sole responsibility that the product 2H Digital Aerosol Photometer is in conformity with the following directives Standard s to which Application of Council Directive s Conformity is Declared Electromagnetic Compatibility Directive 89 336 EEC EN 61326 1 1998 Low Voltage Directive 73 23 EEC EN 61010 1 2001 Design documentation is maintained at Air Techniques International 11403 Cronridge Drive Owings Mills Maryland 21117 2247 USA Ga A Eric Hanson Date of Issue 02 September 2003 President Place of Issue Owings Mills Air Techniques International Maryland 21117 2247 1800110 36 Revision F Model 2H USA This page intentionally left blank 1800110 37 Revision F
28. plays ug l of concentration to be displayed as 100 when sampled Use lt A gt or lt V gt to change lt ENTER gt O Blinks Ready for Testing 1800110 29 Revision F Model 2H USER is a stored sampled concentration saved by the user to be displayed as 100 This value is stored in memory until a new value is sampled and saved by the user To set After completing the setting 100 procedure below Press the REF button and USER will be displayed Press lt ENTER gt 0 will blink turn the Selector Valve to CLEAR and press lt ENTER gt HIGH allows sampling of concentrations above 130ug L exceeding 200p g 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 REF lt ENTER gt and resetting 0 See USER above Ready for Testing 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 t
29. ront 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 4 9 VERIFYING THE UPSREAM CONCENTRATION DURING TEST 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 1800110 23 Revision F Model 2H 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 1800110 24 Revision F Model 2H 5 MAINTENANCE Scheduled Maintenance 5 1 WEEKLY e Clean the scanning probe screens These are located on the black and red circular scanning probe nozzles e Clean the gross particulate screen located at the base of the fle
30. section 4 1 Initialization Note If there is a concern that the zero baselines may have drifted the operator may re amp 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 a WARNING The unit should be placed on a flat stable surface with the area to be monitored within reach of the sample lines 1 Insert the UPSTREAM sample line into the upstream aerosol air mixture b Note The sample line should be as close to the upstream side of the filter as possible 2 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 If 100 was used as a reference value the indicated Leakage corresponds to a microgram per liter value b Note Adjust aerosol for desired challenge aerosol concentration 4 7 MEASURING LEAKAGE USER DEFINED REFERENCE USER 1 Insert the UPSTREAM sample line into the upstream aerosol air mixture by Note The sample line should be as close to the upstream side of the filter as possible 2 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 3 Press the lt 100 gt button and press
31. sition The following events will occur The display will show 8 8 8 8 8 All of the LEDs in the bar graph will be illuminated The LEDs in the 0 100 REF and ALARM buttons will be illuminated A short beep will sound Flow sensor indicator LED becomes active SN These events indicate that the unit has started and also give the user the opportunity to check the integrity of all the LEDs with the exception of the optics LEDs The flow LED should 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 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 Use the lt A gt Up and lt V gt Down function keys to select the internal reference factor Press lt ENTER gt The unit will scan while adjusting the detector gain level OS ae The zero LED will begin to blink indicating that it is time to set the zero reference Verify the selector valve is set to clear 7 Press lt ENTER gt The bar graph display will scan to indicate that the unit is sampling the zero reference value Upon completion a short tone will sound and the unit wil
32. ting the mass concentrations encountered on a digital 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 relatively independent of size shape or color 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 2 2 4 Filter Leak Testing The Most Common Application The most common application of the 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 above the filter to allow statistically valid measurements below the filter The test aerosol should be introduced into the system on the upstream side of the filter or filters as far from the filters as is practical to insure adequate mixing with the airflow in the duct A commonly used guideline that assures adequate mixing is ten duct diameters upstream of the filter A sample of the aerosol air mixture should be taken from the upstream side close to the filters under test to verify the necessary upstream challenge This sample is also used to set the 100 baseline The 0 baseline is then adjusted using particle free air supplied by the internal UL
33. ts e Leakage e Absolute aerosol concentration 2 2 6 Input Output features e Alarm audible and visual When a reading exceeds the user selected alarm point a tone will sound and the display will flash on and off e Serial Data Output Leakage data is sent out the unit s serial port This data can be logged on ATT s DAS1 or DAS2 data acquisition systems The following are screenshots of the DAS 1 interface Contact ATI or your local representative for more information about the data acquisition systems available from ATI 4 11 10 x 4 11 00 amp Live Mode Selected building 115 Leakage 1 2345 Live Mode Selected building 115 Leakage 12 3450 Information TDA 2G TDA 100P TDA 99M TDA 99M Mode File View Probe Log O 1800110 9 Revision F Model 2H 3 SETUP 3 1 LOCATIONS amp FUNCTIONS 2 4 Figure 1 Front View Selector Valve Selects the sample source Upstream Sample Port Connects to the sample tubing that is used to measure the upstream aerosol concentration Scanning Probe Ground Jack Electrical ground connection for scanning probe shielding Required for CE compliance Scanning Probe Connector Electrical connection for the optional Scanning Probe NOTE Connect the Scanning Probe before applying power to the 2H Failure to do so will result in the lack of operation of Scanning Probe s display If this occurs simply turn off the power to the
34. xible scanning probe extension e Remove any loose debris from the Scanning Probe and front panel sampling ports 5 2 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 A Return Authorization can also be obtained using ATI 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 5 3 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 fuse 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 At present there is no error message or indication on the front panel that the scattering chamber light source is not working If the scattering chamber light source has burned out the operator will witness a lack
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