pDR1000an - User Manual
Contents
1. BATTERY LEFT 83 MEMORY LEFT 96 CONNECT TO PC START RUN ENTER READY NEXT 8 3 Measurement Run Procedure KEY ENTER EXIT EXIT DISPLAY LOGGING DISABLED LOG INTRVL 600s TAG 4 CONC 0 047 mg m TWA 0 039 mg m TERMINATE RUN Y ENTER N EXIT CONC 0 047 mg m TWA 0 039 mg m 23 This screen displays the remaining battery charge and the remaining percentage of free memory When this screen has been selected the operating parameters can be edited and or the logged data can be downloaded via the PC see Section 9 0 If NEXT is keyed again the screen returns to RUN READY The instrument is now ready to run following the procedure in section 8 3 NOTES or if logging was enabled Logging status will be displayed for 3 seconds After a 3 second delay the concentration screen appears values shown here examples CONC is the real time and TWA is the time 662699 averaged concentration The appears only if logging has been enabled To terminate the current run and return to the Ready Mode key ENTER To continue the run key EXIT Keying NEXT successively scrolls the display to show various run values elapsed run time maximum STEL etc Keying EXIT returns to the concentration display 4 NEXT 5 6 7 NEXT 8 NEXT 9 NEXT 10 EXIT 11 ENTER ET 06 12 49 ST 08 18 26MAY 15 MAX 0 113 mg m T 10 08 44 MAY15 STEL2. power supply Alarm output 1 Hz square wave 5 V peak to peak amplitude Load impedance gt 100 kQ Internal battery 9V alkaline 20 hour run time typical Current consumption 15 to 25 mA in Run Mode 10 to 20 mA in Ready Mode AC source universal voltage adapter included 100 250 V 50 60 Hz CE marked Optional battery pack model pDR BP rechargeable NiMH 72 hour run time typical Operating environment 10 to 50 C 14 to 122 F 10 to 95 RH non condensing Storage environment 20 to 70 C 4 to 158 F Dimensions max external Model pDR 1000AN 153 mm 6 0 in x 92 mm 3 6 in W x 63 mm 2 5 in D Model pDR 1200 including cyclone and filter holder 160 mm 6 3 in H x 205 mm 8 1in W x 60 mm 2 4 in D e Weight pDR 1000AN 0 5 kg 18 oz Model pDR 1200 0 68 kg 24 oz e Cyclone included in model pDR 1200 only Model Filter holder included in model pDR 1200 only Model MAWP037A0 with 0 8 um pore size filter Referred to gravimetric calibration with SAE Fine ISO Fine test dust mmd 2 to 3 um og 2 5 as aerosolized At constant temperature and full battery voltage 3 User selectable 30 USER GUIDELINES 31 Handling Instructions The personalDataRAM is a sophisticated optical electronic instrument and should be handled accordingly Although the personalDataRAM is very rugged it should not be subjected to excessi
3. e Analog output status enabled or disabled can also be selected directly through personalDataRAM keyboard see Section 8 2 Alarm level 0 001 to 400 mg m3 in 1 ug m increments Alarm mode Off Instantaneous or STEL can also be selected directly through personalDataR AM keyboard see Section 8 2 The serial number of the personalDataRAM is transferred automatically to the PC and displayed on its screen In addition the user can input any other identification for the instrument up to 20 characters 9 4 Real Time RS 232 Output During the RUN mode the personalDataRAM communicate real time concentration data through its serial port via the pDR COM software package This software application decodes the data and displays it on the computer screen in both graphical and tabulated form In order to use this output with some other application the following information will enable the user to decipher the encoded output signal The communication settings for the digital output of the personalDataRAM are Baud rate 4800 bps or 9600 bps Data bits 8 Stop bits 1 Parity none Flow control Xon Xoff 30 Every second during a run the personalDataRAM serial port will output sixteen character code It consists of two brackets with 14 hexadecimal digits between them representing sum check 2 digits sensed concentration 8 digits and calibration factor 4 digits The concentration in ug m
4. The accuracy of the analog output signals is better than 1 of the reading with respect to the digital reading 11 0 ALARM 111 Alarm Description and Operation The personalDataRAM alarm function is provided both as an audible signal as well as an electrical output The audible alarm consists of a series of beeps generated by an on board piezo transducer The electrical output available at the digital communications port consists of a 1 Hz square wave signal which can be used to trigger activate other equipment through an appropriate interface consult with the factory The alarm function can enabled disabled by the user through the personalDataRAM keyboard see Section 8 2 Setting of the alarm level must be performed on the PC see Section 9 0 The alarm is triggered whenever the preset alarm level is exceeded based either on a the displayed real time concentration if ALARM INSTANT was selected see Section 8 2 or b a 15 minute running average concentration if ALARM STEL was selected When the concentration falls below that level the alarm condition stops While the alarm is on the user can stop it i e silence the alarm by pressing any key of the personalDataRAM If the concentration continues to exceed the set alarm level after 10 seconds however the alarm restarts 112 Alarm Output A pulsed voltage output is available on the personalDataRAM in synchronism with the audible signal This signal consists of a 1 Hz squ
5. NOTE Before plugging in or unplugging the external power supply the personalDataRAM must be shut off 18 6 4 Rechargeable Battery Module A rechargeable battery pack model pDR BP is available as an optional accessory This unit attaches directly to the base of the personalDataRAM The pDR BP contains a sealed nickel metal hydride battery NIMH which provides typically 72 hours of continuous operation between successive charges for 3 hour charging The use of the personalDataRAM in combination with the pDR BP connected to the AC power line ensures totally uninterruptible operation over an indefinite period In this operating mode line power interruptions lasting up to 72 hours have no effect on measurement run continuity To attach the pDR BP to the personalDataRAM the instrument should be shut off Carefully plug the pDR BP into the external DC receptacle on the personalDataRAM Rotate the large thumbscrew at the opposite end of the pDR BP tightening it firmly The pDR BP can be recharged by means of the AC power supply of the personalDataRAM Detailed instructions for the use of the rechargeable battery module are furnished with that accessory 6 5 Zeroing the personalDataRAM One of the most important steps to be performed by the user before initiating a measurement run with the personalDataRAM is to zero the instrument This is required to ensure maximum accuracy of concentration measurements especially at low levels i
6. averaging the measurements of the two gravimetric filters to within 1 Three primary NIST traceable measurements are involved in the determination of the reference mass concentration the weight increment from the dust collected on the filter the sampling flow rate and the sampling time Additional conditions that must be met are a suspended dust concentration uniformity at all sampling inlets of the mixing chamber b identical sample transport configurations leading to reference and instrument under calibration and c essentially 100 collection efficiency of filters used for gravimetric reference for the particle size range of the test dust The test dust used for the Thermo Fisher Scientific factory calibration of the personalDataRAM is SAE Fine ISO Fine supplied by Powder Technology Inc It has the following physical characteristics as dispersed into the mixing chamber Mass median aerodynamic particle diameter 2 to um e Geometric standard deviation of lognormal size distribution 2 5 Bulk density 2 60 to 2 65 g cm3 Refractive index 1 54 13 2 Field Gravimetric Calibration If desired the personalDataRAM can be calibrated gravimetrically for a particular aerosol dust smoke mist etc under field conditions actual conditions of use To effect such calibration in the particle environment of interest proceed as indicated below For field calibration of the model pDR 1000AN a personal type filter sample
7. character per line LCD indicates either measured values of concentration instantaneous and time averaged on the same screen elapsed run time maximum and STEL short term excursion limit values operating and logging parameters diagnostics or other messages The acoustic alarm transducer is located directly behind the center of the Thermo Scientific formerly Thermo Electron Corporation logo on the front panel 5 2 Bottom Base Refer to Figures 3 for model pDR 1000AN or 4 for model pDR 1200 The base of the personalDataRAM contains the following a internal battery compartment cover b external DC power input receptacle and c threaded bushing for the attachment of optional battery pack tripod or other mounting support hardware Only the internal battery compartment cover should be opened by the user for removal and replacement of the on board 9V battery Removal of the base plate could result in voiding of instrument warranty 5 3 Right Side Panel Refer to Figures 5 for model pDR 1000AN or 6 for model pDR 1200 which shows the manner of attachment of the belt clip assembly belt clip should be attached only if required by the user The right side panel as viewed from front panel contains the RJ 12 6 contact modular jack connector receptacle for digital RS 232 communications and analog signal output This connector also provides the alarm output control for a remote auxiliary alarm signal The contacts from top to bot
8. e below about 0 1 mg m During the 2 minute pre run automatic zeroing sequence see Section 8 1 the personalDataRAM registers its own optical background stores that level in its memory and then subtracts that background from all measured concentration values until the zero is updated again by the user Although zeroing can be performed as often as desired e g before every run in practice it should not be necessary to do so more than once a month or even less frequently except if average particulate concentrations should exceed about 0 5 3 mg m 6 5 1 Zeroing the model pDR 1000AN Zeroing of the model pDR 1000AN requires a particle free environment such as a clean room clean bench duct or area directly downstream of a HEPA filter or the pDR 1000AN Z Pouch standard accessory In some cases a very clean well air conditioned office may offer a sufficiently low particle concentration environment 19 Le lt 5 ug m for zeroing as determined by another monitor e g Thermo Scientific DataRAM 4 To zero the model pDR 1000AN by means of its Z Pouch proceed as follows Wipe the outside surfaces of the pDR 1000AN to remove as much dust from those surfaces as possible before placing the instrument inside the Z Pouch In a reasonably clean environment open the zipper of the Z Pouch and place the pDR 1000AN inside it Close the zipper shut Open the small nipple on the Z Pouch and insert the fitting of the hand pum
9. is about 1 um and the largest is about 12 um For particle size classification outside this range consult with the factory 14 2 Particle Sizing The selectable particle size capability of the cyclone in combination with the concentration measuring capability of the photometric system of the pDR 1200 permits the user to determine the mass median aerodynamic particle diameter of an aerosol 1 of the airborne particle population being sampled One simple procedure to determine the median particle size is as follows please refer to the graph of Fig 7 e Remove cyclone from its black attachment cup and set cyclone aside e Start pump and sample aerosol at a flow rate between 2 and 4 liters minute e Press ON key on pDR 1200 panel and after about one minute key NEXT and then ENTER e After an elapsed time ET of about one minute read and note TWA concentration e Shut off pump Plug in cyclone into its attachment cup 37 e Start pump and run at about 1 liter minute Observe real time concentration CONC reading e Increase flow rate very slowly and gradually until CONC reading is one half of the initial concentration measured without the cyclone Continue sampling at this flow rate for about one minute and confirm that TWA reading is about one half of the initial one Otherwise readjust flow rate Note final flow rate at which the TWA value has decreased to one half the value noted without the cyclone e Enter the final flow ra
10. obligation to make repairs replacements or corrections required in whole or in part as the result of i normal wear and tear ii accident disaster or event of force majeure iii misuse fault or negligence of or by Buyer iv use of the Products in a manner for which they were not designed v causes external to the Products such as but not limited to power failure or electrical power surges vi improper storage and handling of the Products or vii use of the Products in combination with equipment or software not supplied by Seller If Seller determines that Products for which Buyer has requested warranty services are not Warranty Warranty covered by the warranty hereunder Buyer shall pay or reimburse Seller for all costs of investigating and responding to such request at Seller s then prevailing time and materials rates If Seller provides repair services or replacement parts that are not covered by the warranty provided in this warranty Buyer shall pay Seller therefor at Seller s then prevailing time and materials rates ANY INSTALLATION MAINTENANCE REPAIR SERVICE RELOCATION OR ALTERATION TO OR OF OR OTHER TAMPERING WITH THE PRODUCTS PERFORMED BY ANY PERSON ENTITY OTHER THAN SELLER WITHOUT SELLER S PRIOR WRITTEN APPROVAL OR ANY USE OF REPLACEMENT PARTS NOT SUPPLIED BY SELLER SHALL IMMEDIATELY VOID AND CANCEL ALL WARRANTIES WITH RESPECT TO THE AFFECTED PRODUCTS THE OBLIGATIONS CREATED BY THIS WARRANTY STATEMEN
11. on the web at www thermo com aqi 1 866 282 0430 Toll Free 1 508 520 0430 International 46
12. specifications provided that a Buyer shall promptly notify Seller in writing upon the discovery of any defect which notice shall include the product model and serial number if applicable and details of the warranty claim b after Seller s review Seller will provide Buyer with service data and or a Return Material Authorization RMA which may include biohazard decontamination procedures and other product specific handling instructions and c then if applicable Buyer may return the defective Products to Seller with all costs prepaid by Buyer Replacement parts may be new or refurbished at the election of Seller All replaced parts shall become the property of Seller Shipment to Buyer of repaired or replacement Products shall be made in accordance with the Delivery provisions of the Seller s Terms and Conditions of Sale Consumables including but not limited to lamps fuses batteries bulbs and other such expendable items are expressly excluded from the warranty under this warranty Notwithstanding the foregoing Products supplied by Seller that are obtained by Seller from an original manufacturer or third party supplier are not warranted by Seller but Seller agrees to assign to Buyer any warranty rights in such Product that Seller may have from the original manufacturer or third party supplier to the extent such assignment is allowed by such original manufacturer or third party supplier In no event shall Seller have any
13. the current consumption of the personalDataRAM further increases by the magnitude of the output signal current up to a maximum increment of 20 mA Therefore when not using the analog output it is advisable to disable that output see Section 8 2 in order to minimize power consumption this is important only when powering the personalDataRAM from a battery source 10 2 Analog Output Connection The personalDataR is provided with cable model pDR ANC which has a 6 contact plug at one end and flying leads at the other There are 4 leads for the analog and alarm outputs The additional two contacts of the connector are used only for digital communication with a PC for which a separate cable model pDR DCC is provided Counting from top to bottom on the personalDataRAM connector receptacle contact 1 is the positive 4 20 mA analog output contact 2 is the alarm output contact 5 31 is the common ground return for all signals and contact 6 is the positive 0 5 V analog output For the 0 5 output signal the externally connected load must have an impedance of more than 200 kilo ohms For the 4 20 mA output signal the externally connected load must have an impedance of less than 200 ohms when powering the personalDataRAM with a battery or less than 300 ohms when using the its AC supply Since both voltage and current outputs are present at the same time both can be used concurrently if so required
14. the interior surfaces of the sensing chamber components This may cause an excessive rate of increase in the optical background If this background level becomes excessive the personalDataRAM will alert the user at the completion of the zeroing sequence as indicated in Section 8 1 by the display of a BACKGROUND HIGH message If this message is presented the personalDataRAM can continue to be operated providing accurate measurements However it is then advisable to clean the interior of the sensing chamber at the first convenient opportunity proceeding as indicated below 12 2 1 Model pDR 1000AN Remove the two screws on the top of the large protective bumper that covers the sensing chamber see Figure 1 Remove the large protective bumper by lifting it firmly upwards and away from the sensing chamber Remove the socket head screws the front and back black covers that were exposed by removal of the large top bumper Lift away the freed front and back covers of the sensing chamber set them aside carefully and such that they can be reattached in the same position as they were previously avoid touching the dull black side of these plates 33 Using filtered particle free pressurized air blow the inside of the sensing chamber taking great care in not marring or scratching any of the exposed surfaces e Reposition the two sensing chamber cover plates in the same location front and back as they had been originally Inse
15. 0 058 mg m T 09 59 22 15 BATTERY LEFT 83 BATTERY LEFT 83 MEMORY LEFT 96 ANALOG OUTPUT 0 0 400 mg m CONC 0 047 mg m TWA 0 039 mg m TERMINATE RUN Y ENTER N NEXT START RUN ENTER READY NEXT This screen shows the elapsed run time ET and the run start time date ST This screen shows the maximum concentration of current run and time date of occurrence This screen shows the 15 min STEL value of the current run and the time date of occurrence or if logging was enabled This screen shows the amount of usable charge left in the battery and if logging has been enabled the overall amount of free memory left This screen shows the status of the analog signal output and the range if this output has been enabled The last NEXT command returns the display to the concentration screen As indicated in step 2 to end current run key ENTER to return to the Ready Mode This keystroke terminates the current run and returns the unit to the Ready Mode If during a run the instrument memory is filled completely or if all 99 tags have been used the run is automatically terminated and the display will indicate RUN TERMINATED FULL MEMORY If a new run is initiated after the memory has been filled the personalDataRAM can be operated only as a monitor without logging The memory must then be cleared see Section 7 3 2 first before logging can be enabled again 26 84 Abbreviated Ru
16. 3 2 Field Gravimetric Calibration 2 2 vi 21 21 21 21 22 22 22 23 23 24 25 21 24 28 28 28 29 30 31 31 31 32 32 32 33 33 33 33 33 34 34 34 34 39 36 36 14 0 15 0 16 0 17 0 PARTICLE SIZE CLASSIFICATION Model pDR 1200 only 14 1 Size Fractionated Monitoring 14 2 Particle Sizing CONVERSION BETWEEN personalDataRAM VERSIONS 15 1 Conversion procedure from pDR 1000AN to pDR 1200 15 2 Conversion procedure from pDR 1200 to pDR 1000AN SEQUENCE OF KEYSTROKES AND SCREENS SERVICE LOCATIONS vii 37 37 37 40 40 41 42 46 viii Thermo Fisher Scientific Warranty Seller warrants that the Products will operate or perform substantially in conformance with Seller s published specifications and be free from defects in material and workmanship when subjected to normal proper and intended usage by properly trained personnel for the period of time set forth in the product documentation published specifications or package inserts period of time is not specified in Seller s product documentation published specifications or package inserts the warranty period shall be one 1 year from the date of shipment to Buyer for equipment and ninety 90 days for all other products the Warranty Period Seller agrees during the Warranty Period to repair or replace at Seller s option defective Products so as to cause the same to operate in substantial conformance with said published
17. 3 3 2 Model pDR 1200 The pDR 1200 requires an external vacuum pump such as a small diaphragm pump e g model pDR PU for its sampling operation The inlet of the pump must be connected by means of tubing to the hose fitting on the pDR 1200 37 mm filter holder attached to sensing chamber see Figure 2 The inlet metal tube of the cyclone can be oriented in any desired direction 1 upward forward downward or backward by rotating the cyclone body within its holder cup on the right side of the sensing chamber see Figure 2 Always ensure unobstructed access to the cyclone inlet when sampling directly the air in the instrument s vicinity Alternatively tubing can be connected to the cyclone inlet in order to extract a sample stream from a duct chamber or other enclosed volume Typical modes of instrument support handling include Hand held For example using a personal type pump clipped to the belt and using a tubing connection to the pDR 1200 e Belt attached Use belt clip kit provided as standard accessory The unit can be worn on a waist belt or with the optional shoulder belt model pDR SS for breathing zone monitoring A personal pump can then be belt worn as well e Tabletop operation The pDR 1200 be placed on table either in an upright position i e resting on its lower protective bumper or on its back 1 6 resting on its backside e Wall mounted for fixed point monitoring Use optional wall mounting
18. Model pDR 1000AN 1200 personalDATARAM Instruction Manual Particulate Monitor Part Number 100181 00 15May2013 2007 Thermo Fisher Scientific Inc rights reserved Specifications terms and pricing are subject to change Not all products are available in all countries Please consult your local sales representative for details Thermo Fisher Scientific Air Quality Instruments 27 Forge Parkway Franklin MA 02038 1 508 520 0430 www thermo com aqi Thermo Fisher Scientific WEEE Compliance This product is required to comply with the European Union s Waste Electrical amp Electronic Equipment WEEE Directive 2002 96 It is marked with the following symbol Thermo Fisher Scientific has contracted with one or more recycling disposal companies in each EU Member State and this product should be disposed of or recycled through them Further information on Thermo Fisher Scientific s compliance with these Directives the recyclers in your country and information on Thermo Fisher Scientific products which may assist the detection of substances subject to the RoHS Directive are available at www thermo com WEEEROHS WEEE Compliance Table of Contents WARRANTY 1 0 GENERAL DESCRIPTION 20 5 3 0 USER GUIDELINES 4 0 5 0 6 0 3 2 Safety Instructions 3 3 Handling and Operation 3 3 1 Model pDR 1000AN 3 3 2 M
19. T TO REPAIR OR REPLACE A DEFECTIVE PRODUCT SHALL BE THE SOLE REMEDY OF BUYER IN THE EVENT OF A DEFECTIVE PRODUCT EXCEPT AS EXPRESSLY PROVIDED IN THIS WARRANTY STATEMENT SELLER DISCLAIMS ALL OTHER WARRANTIES WHETHER EXPRESS OR IMPLIED ORAL OR WRITTEN WITH RESPECT TO THE PRODUCTS INCLUDING WITHOUT LIMITATION ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE SELLER DOES NOT WARRANT THAT THE PRODUCTS ARE ERROR FREE OR WILL ACCOMPLISH ANY PARTICULAR RESULT Thermo Fisher Scientific 10 GENERAL DESCRIPTION The personalDataRAM for Personal Data logging Real time Aerosol Monitor is a technologically advanced instrument designed to measure the concentration of airborne particulate matter liquid or solid providing direct and continuous readout as well as electronic recording of the information The personalDataRAM is available in two versions model pDR 1000AN and model pDR 1200 The model pDR 1000AN operates as a passive air sampler whereas the model pDR 1200 uses active air sampling The user can convert from one to the other of these two versions by means of optional conversion kits offered see Sections 4 2 and 15 0 of this manual The model pDR 1000AN passively samples 1 6 without a pump the air surrounding the monitor air freely accesses the sensing chamber of the instrument by means of convection diffusion and adventitious air motion The model pDR 1200 on the other hand requires a separate
20. TER ALARM STEL Set Up LEVEL 0 50 mg m Ready NEXT Mode CAL FACTOR 1 00 DIS AVG TIME 10s NEXT MEMORY LEFT 96 NEXT CONNECT TO PC NEXT START RUN ENTER READY NEXT Continues on next page ENTER LOG INTRVL 600s TAG 4 5 sec CONC 0 047 mg m TWA 0 039 mg m CONC 0 054 mg m TWA 0 041 mg m EXIT NEXT TERMINATE RUN ET 06 12 49 Y ENTER N NEXT ST 08 18 26MAY15 ENTER NEXT EXIT NEXT Run START RUN ENTER MAX 0 113 mg m Mode READY NEXT T 10 08 44 MAYIS ON OFF EXIT NEXT logging T 09 59 22 15 EXIT NEXT MEMORY LEFT 96 EXIT NEXT 0 4 000 mg m NEXT CONC 0 044 mg m TWA 0 040 mg m ON OFF TURN OFF PDR Y ENTER N NEXT ENTER NEXT power off CONC 0 036 mg m TWA 0 039 mg m 44 Resetting Electronic Checking Mode EXIT ENTER ON OFF PDR SELF TEST TESTING ALARM PDR SELF TEST TESTING SERIAL PDR SELF TEST TESTING CLOCK PDR SELF TEST Automatic TESTING A D Sequence 30 40 sec PDR SELF TEST TESTING D A PDR SELF TEST TESTING MEMORY PDR SELF TEST TESTING COMPLETE automatic power off NOTE After the preceding resetting sequence the instrument should be zeroed otherwise its optical background will remain unsubtracted 17 0 SERVICE LOCATIONS For additional assistance service is available from exclusive distributors worldwide Contact one of the phone numbers below for product support and technical information or visit us
21. VL 60 seconds Logging status disabled LOGGING DISABLED Alarm level mg m 27 Alarm status disabled ALARM OFF Analog output 0 to 4 mg m Analog output status disabled ANALOG OUTPUT DISABLED Real time display averaging time DIS AVG TIME 10 seconds Calibration factor CAL FACTOR 1 00 When turning on the personalDataRAM after resetting the instrument it should be zeroed see steps 1 and 2 of Section 8 1 before a run is initiated Otherwise its internal optical background level will not be subtracted from the indicated concentration readings Alternatively if the instrument is not zeroed after resetting it will indicate its unsubtracted optical background when run under particle free conditions 9 0 COMMUNICATIONS WITH COMPUTER 9 1 Hardware and Software Requirements The computer requirements to install the software provided with the personalDataRAM Thermo Scientific pDR COM are the following compatible 486 Pentium better processor e Minimum operating system Windows 95 or better 28MBof RAM 2 MB of hard drive space CD ROM drive e VGA or higher resolution monitor NOTE When large files are logged in the personalDataRAM in one single tag a faster computer speed is required to handle the data For example if all 13 000 data points are logged in one tag a Pentium I or II processor with a minimum speed of 166 MHz will be required If however
22. are version 23 8 2 Setting Up For Run Ready Mode KEY NEXT ENTER NEXT ENTER ENTER NEXT ENTER NEXT DISPLAY LOGGING DISABLED LOG INTRVL 600s TAG 4 ALARM OFF ALARM INSTANT LEVEL 1 50 mg m ALARM STEL LEVEL 0 50 mg m ANALOG OUTPUT DISABLED ANALOG OUTPUT 0 0 400 mg m CAL FACTOR 1 00 DIS AVG TIME 10s 24 NOTES This screen indicates the logging status To enable the logging function key ENTER Toggling of the on off logging status can be done by keying ENTER This message indicates that logging is enabled Example is for 10 min log period selected through the PC see Section 9 0 and next free tag 15 4 This screen indicates the alarm status Keying ENTER repeatedly toggles through the 3 alarm modes This enables the alarm based on the real time concentration The level e g 1 50 mg m must be set on the PC This enables the alarm based on the 15 min STEL value The level e g 0 50 mg m must be set on the PC This screen indicates the analog signal output status Keying ENTER will enable the analog output Toggling the analog output on off can be done by keying ENTER This enables the analog output The concentration range e g 0 0 400 mg m must be set on the PC This screen displays the calibration factor and the display averaging time Edit via PC 9 10 11 1 2 3
23. are wave with an amplitude level of 5 V pp An externally connected load should have an impedance of no less than 100 kilo ohms This alarm output signal is available at pins 2 and 5 counting from top to bottom of the 6 contact output communications port on the side of the personalDataRAM see Figure 5 or 6 32 11 3 Remote Alarm Unit An alarm relay unit model pDR RA is available as an optional accessory for the personalDataRAM The pDR RA when connected to the alarm output of the personalDataRAM provides a switched output triggered by the alarm signal of the monitor This switched output up to 8 amperes 250 volts can be used to activate or deactivate other equipment e g ventilation systems machinery etc or to control remotely located by wire connection alarm indicators e g buzzers lights etc 12 0 MAINTENANCE 121 General Guidelines The personalDataRAM is designed to be repaired at the factory Access to the internal components of the unit by others than authorized personnel voids warranty The exception to this rule is the occasional cleaning of the optical sensing chamber Unless a MALFUNCTION message is displayed or other operational problems occur the personalDataRAM should be returned to the factory once every two years for routine check out testing cleaning and calibration 12 2 Cleaning of Optical Sensing Chamber Continued sampling of airborne particles may result in gradual build up of contamination on
24. asurement run Note While the pDR 1200 is used to monitor high dust concentrations 2 0 5 mg m the flow through its sensing chamber should not be stopped before purging it which can be done by connecting the green zeroing filter to the cyclone inlet and continuing to run the pump for about 2 minutes before shutting it off This is to prevent dust contamination of the sensing chamber 20 6 6 pDR 1200 Filter Holder Installation The 37 mm filter holder provided with the pDR 1200 must be installed before operation of the instrument in order to connect a sampling pump To install the filter holder remove protective cover and insert the open collar over the black attachment cup with the external o ring on the left side of the pDR 1200 sensing chamber Ensure complete insertion To replace the membrane filter separate the two sections of the plastic holder prying them apart with screwdriver or a coin Make sure to place backing under the membrane filter before rejoining the two plastic rings 7 0 OPERATING MODES The personalDataRAM has several different operating modes which will be described in what follows The specific commands and displays within each of these operating modes will be explained in detail in Section 8 0 A complete flow chart of keystrokes and screens is provided in Section 16 0 7 1 Start Up Mode The personalDataRAM enters the Start Up Mode as soon as the instrument is switched on The user then has the c
25. batteries of equal capacity Intermittent operation should extend the total running time because of partial battery recovery effects The approximate remaining battery capacity is indicated by the personalDataRAM see Section 8 2 in increments of 1 starting from 99 If the remaining battery capacity is 40 or less immediate restarting after shut off is automatically inhibited to prevent incomplete runs If nevertheless a new run is to be initiated with low remaining battery capacity do not shut off the personalDataRAM at the end of the previous run 1 remain in the Ready Mode see section 7 0 When significantly extended operating times are required beyond the typical 20 hours the use of either lithium or zinc air batteries can be considered The use of such alternative battery types can provide about 2 to 3 times longer operation than alkaline batteries 6 3 AC Power Supply A universal line voltage AC to DC power supply model pDR AC is provided as standard accessory with the personalDataRAM This power supply can be used with any line with a voltage between 100 and 240 VAC 50 to 60 Hz When using that power supply its output plug should be inserted into the external DC receptacle at the base of the personalDataRAM see Figure 3 or 4 Insertion of that connector automatically disables the internal 9V battery of the instrument Removal of the pDR AC plug from the instrument automatically re connects the internal 9V battery
26. bracket model pDR WB either in combination with model pDR PU pump module and model pDR AC power supply powering both the pDR 1200 and the pDR PU or with a separate pump Tripod mounted The unit can be attached to any standard tripod using the threaded opening on the bottom base see accessory attachment fitting on Fig 4 3 4 Air Sampling Guidelines Although the personalDataRAM is designed primarily for intramural use i e for indoor air quality in plant or mining environment monitoring its active sampling version model pDR 1200 also makes it compatible with extramural use i e ambient monitoring General ambient monitoring applications however are performed preferentially using an appropriate inlet configuration in order to ensure representative particle sampling under conditions of variable wind speed and direction Consult with Thermo Fisher Scientific for such outdoor applications For typical area monitoring applications the personalDataRAM should be placed and operated centrally within the area to be monitored away from localized air currents due to fans blowers ventilation intakes exhausts etc This is to ensure representative sampling within the area to be assessed 3 5 Environmental Constraints and Certifications The personalDataRAM is designed to be reasonably dust and splash resistant however it is not weatherproof To operate the unit outdoors provisions should be made to protect it from environmental ex
27. culate the average gravimetric concentration C as follows 1000 Am ETxQ Compare the recorded value of TWA and the calculated value C and calculate the calibration factor to be programmed into the personalDataRAM see Section 9 0 as follows CAL FACTOR C TWA For example if C was found to be 3 2 mg m and TWA had been determined to be 2 5 mg m the CAL FACTOR equals 1 28 Select this value on the PC as described in Section 9 0 This completes the gravimetric calibration of the personalDataRAM for a specific aerosol 13 3 Scattering Coefficient Calibration Users interested in using the personalDataRAM for scattering coefficient measurements e g for atmospheric visibility monitoring should contact the factory A special primary Rayleigh scattering calibration for such purpose can be performed by the factory 13 4 Internal Span Check The zeroing procedure see Section 8 1 and the resulting normal diagnostic display of CALIBRATION OK step 2 informs the user that the instrument s calibration agrees with the original factory setting This is an internal span check that consists of an automatic comparison between the initial factory optical background of the personalDataRAM registered in its non volatile memory and the current optical background sensed during the zeroing sequence 36 14 0 PARTICLE SIZE CLASSIFICATION model pDR 1200 only The particle size selective cyclone of the pDR 1200 provides the user with
28. d switched output a RS 232 communications port and a programmable analog concentration output voltage and current are all part of this versatile instrument A custom software package is provided with the personalDataRAM to program operating logging parameters e g logging period alarm level concentration display averaging time etc as well as to download stored or real time data to a PC or laptop for tabular and or graphic presentation If required the data can also be imported to standard spreadsheet packages e g Microsoft Excel Lotus 1 2 31M eto 2 0 SPECIFICATIONS Concentration measurement range auto ranging 0 001 to 400 mg m Scattering coefficient range 1 5 x 10 to 0 6 m approx 880 nm Precision repeatability over 30 days 2 sigma 2 of reading or 0 005 mg m whichever is larger for 1 sec averaging time 0 5 of reading or 0 0015 mg m whichever is larger for 10 sec averaging time 0 2 of reading or 0 0005 mg m whichever is larger for 60 sec averaging time Accuracy 5 of reading precision Resolution 0 1 of reading or 0 001 mg m whichever is larger Particle size range of maximum response 0 1 to 10 um Flow rate range model pDR 1200 only 1 to 10 liters minute external pump required Aerodynamic particle sizing range model pDR 1200 only 1 0 to 10 um Concentration display updating interval 1 second Concentration display averaging time 1 to 60 sec
29. e bumper that covers the sensing chamber see Figure 1 This bumper is not used on the pDR 1200 e Remove the large protective bumper by lifting it firmly upwards and away from the sensing chamber Reinsert in the upper two threaded holes and tighten the two screws that had held the protective bumper e Remove the socket head screws on the front and back black covers that were exposed by removal of the large top bumper Lift away the freed front and back covers of the sensing chamber store them carefully for future use ensuring that their surfaces are not scratched or marred e Position one of the two gasketed soft rubber sensing chamber cover plates provided in the conversion kit on the front side of the sensing chamber Insert and tighten the included socket head screw firmly making sure that the plate is aligned perfectly with the top of the sensing chamber Similarly attach the other cover plate on the back side of the sensing chamber e Identify the two black cups of the pDR AS conversion kit One of them has an external o ring filter holder cup and the other has no o ring cyclone cup refer to Figures 2 and 4 for the location of these cups on the pDR 1200 sensing chamber These cups can be installed on either side of the sensing chamber 1 the cyclone can be either on the left or the right side of the sensing chamber Figure 2 shows the case where the cyclone is on the right side e Attach one cup to the left side of the se
30. e front panel contains the four touch switches keys and the LCD screen required for the operation of the personalDataRAM The four touch switches provide tactile popping feedback when properly actuated The ON OFF key serves only to turn on the unit while it is in the off state and to turn it off when it is operating UPPER BUMPER COVER OF SENSING CHAMBER DISPLAY TOUCH KEYS LOWER BUMPER Figure 1 FRONT PANEL MODEL pDR 1000AN 10 WWZE 0021 4 72 9270813 9 OL YSENVHO 5 5 11 BATTERY COMPARTMENT COVER THUMBSCREW ACCESSORY ATTACHMENT EXTERNAL D C D C POWER RECEPTACLE Figure 3 BOTTOM BASE MODEL pDR 1000AN 0021 4404 130000 0108 eunbij J10Vld3O3M 70 IVNH3IX3 dWnd OL IN3ALHVdWOO M3AYOSEWNHL INSWHOVLLY 55 00 13 EXIT and ENTER keys serve to execute specific commands that may be indicated on the screen and the NEXT key generally serves to scroll the displayed information e g to review the operating parameters that have been programmed display maximum STEL values diagnostic values etc If an incorrect command is keyed e g ENTER when the personalDataRAM displays real time concentration a beep is heard to alert the user The two line 16
31. el pDR 1200 only The cyclone will require occasional cleaning It is advisable to do so whenever the sensing chamber of the pDR 1200 is cleaned see above To clean the cyclone remove it from its black attachment cup on the sensing chamber and unscrew the grit pot narrower knurled end Use clean pressurized air to blow out the grit pot and through all openings of cyclone body Reattach grit pot to cyclone body and insert cyclone body into attachment cup making sure it is fully inserted 13 0 CALIBRATION 131 Factory Calibration Each personalDataRAM is factory calibrated against a set of reference monitors that in turn are periodically calibrated against a gravimetric standard traceable to the National Institute of Standards and Testing NIST 34 The primary factory reference method consists of generating a dust aerosol by means of a fluidized bed generator and injecting continuously the dust into a mixing chamber from which samples are extracted concurrently by two reference filter collectors and by two master real time monitors Thermo Scientific DataRAM 4 that are used for the routine calibration of every personalDataRAM The primary dust concentration reference value is obtained from the weight increase of the two filters due to the dust collected over a measured period of time at a constant and known flow rate The two master real time monitors are then adjusted to agree with the reference mass concentration value obtained from
32. hoice to a Wait before proceeding b Zero the instrument and check its readiness or c Proceed directly to the Ready Mode 7 2 Once the personalDataRAM is the Ready Mode the user is presented with the following alternatives a Start a run immediately or after any of the subsequent steps b Review by scrolling the display all operating parameters status and diagnostic data c Activate or deactivate the logging function activate select instantaneous or STEL or deactivate alarm d Program parameters or output logged data through a computer 7 3 Run Logging Mode The Run Mode is the measurement logging mode The user can operate the personalDataRAM in this mode either with or without data logging For example the instrument may be used first as a survey monitor without logging for walk through assessment of an industrial plant before deciding where to set up the unit for continuous monitoring and logging 21 7 3 1 Data Logging In order to activate the logging function the unit must be in or returned to the Ready Mode see Section 8 2 If data logging has been enabled the data will be logged in the next free unrecorded tag or data set For example if data had been recorded previously in tags 1 2 and 3 then when a new run is initiated the new data will be stored in tag 4 The data can be separated into number of sets tags up to a total of 99 Any number of indi
33. ime returning it to the Ready Mode To download logged data into a PC the personalDataRAM must be in the Ready Mode No changes in the program parameters or operating conditions can be made while in the Run Mode The personalDataRAM can be shut off from any of the three operating modes Even if shut off while in the Run Mode the instrument will save all stored data 22 80 OPERATION 81 Start Up KEY DISPLAY 1 ON OFF START ZERO ENTER GO TO RUN NEXT 2 ENTER ZEROING V2 00 CALIBRATION OK BACKGROUND HIGH MALFUNCTION 3 START RUN ENTER READY NEXT 4 ON OFF TURN OFF PDR Y ENTER N NEXT NOTES Before starting a run with the personalDataRAM zero it see Section 6 5 and key ENTER while the unit is exposed to particle free air Alternatively key NEXT to go to RUN READY mode If ENTER is keyed Keep clean air flowing while ZEROING is displayed for 1 1 min followed by one of these screens or or If CALIBRATION OK then go to step 3 If one of the other two screens is displayed consult Section 12 0 To start a measurement run key ENTER Section 8 3 step 1 To set up for a run and scroll logging operating parameters key NEXT see Section 8 2 Keying ON OFF while the unit is operating will elicit this message to prevent accidental shut off To confirm shut down key ENTER To continue operation key NEXT The number following the V on the screen refers to the installed firmw
34. is obtained by multiplying the sensed concentration times the calibration factor and dividing by 100 10 0 ANALOG SIGNAL OUTPUT 101 Analog Output Description The personalDataRAM incorporates the capability to provide both a voltage and a current signal output directly proportional to the sensed concentration of airborne particulates Both these analog signal outputs are concurrently available These outputs are provided principally for fixed point applications with hard wired installations such as for continuous HVAC monitoring and control The particulate concentration range corresponding to the output voltage and current ranges 0 to 5 V and 4 to 20 mA can be user selected via a PC The most sensitive range available is 0 to 0 100 mg m and the least sensitive range is 0 to 400 mg m For example if the user selects the analog output range of 0 to 0 400 mg m then the analog output signal levels at a concentration of 0 200 mg m would be 2 5 V and 12 mA Selection of the concentration range of the analog output must be performed on the PC This range is independent of the digital display data logging and real time digital output range which are controlled automatically auto ranging Enabling the analog output increases the current consumption from the power source battery or power supply of the personalDataRAM by typically 5 mA when no load is connected to the analog signal current output If such a load is connected then
35. kit model pDR CA e AC power supply and charger for optional model pDR BP model pDR AC e Metal cyclone model pDR GK2 05 for use with pDR 1200 only 37 mm filter holder and hose fitting model pDR FH for use with pDR 1200 only e Instruction manual 42 Optional Accessories The following optional accessories are available for use with the personalDataRAM Rechargeable battery module model pDR BP Shoulder strap model pDR SS e Remote alarm unit model pDR RA e Wall mounting bracket model pDR WB Active sampling kit to convert model pDR 1000AN to model pDR 1200 model pDR ASC e Upper bumper kit to convert model pDR 1200 to model pDR 1000AN model pDR UB Attachable pump unit model pDR PU for use with pDR 1200 only 5 0 INSTRUMENT LAYOUT The user should become familiar with the location and function of all externally accessible controls connectors and other features of the personalDataRAM Refer to Figures 1 through 6 All user related functions are externally accessible All repair and maintenance should be performed by qualified Thermo Fisher Scientific personnel Please contact the factory if any problem should arise Do not attempt to disassemble the personalDataRAM except as described in Section 12 0 Maintenance otherwise voiding of instrument warranty will result 541 Front Panel Refer to Figures 1 for model pDR 1000AN or 2 for model pDR 1200 for location of controls and display Th
36. n Start Stop Instructions To power up and start a measurement run without zeroing and without logging proceed as follows e Key sequentially ON OFF NEXT and ENTER To terminate run and shut down proceed as follows starting from the concentration screen otherwise key EXIT first e Key sequentially EXIT ENTER ON OFF and ENTER 8 5 Resetting Procedure The personalDataRAM memory can be reset through commands entered on its own keypad i e without requiring a PC Resetting accomplishes the following Frases all stored data from memory e Resets all parameters and operating conditions to their default values and conditions and e Cancels the zero correction offset WARNING THE RESET TEST WILL ERASE ALL DATA STORED IN MEMORY AND SET ALL PARAMETERS TO FACTORY DEFAULT SETTINGS DOWNLOAD ANY DATA BEFORE THE RESET PROCEDURE The procedure to reset the instrument is as follows Starting with the unit shut off press the EXIT and ENTER keys at the same time and while holding down those two keys press ON OFF The screen will then indicate PDR SELF TEST and several diagnostic screens will appear in rapid sequence see Section 16 0 Resetting Electronics Checking Mode ending in the message TESTING COMPLETE The unit will shut off When turned on again the personalDataRAM memory will have been reset as described above The default values and operating conditions of the personalDataRAM are e Logging period LOG INTR
37. n optional attachable rechargeable battery pack or by an AC supply included as standard accessory For the model pDR 1200 power to an adjunct pump must be provided separately Zeroing is accomplished by means of hand inflatable zero pouch included with the model pDR 1000AN and by an inlet filter cartridge provided with the model pDR 1200 In addition the instrument automatically checks agreement with its original factory calibration by checking its optical background during the zeroing sequence The personalDataRAM covers a wide measurement range from 0 001 mg m 1 ug m to 400 mg m 400 000 fold span corresponding to very clean air up to extremely high particle levels In addition to auto ranging real time concentration readout the personalDataRAM offers the user a wide range of information by scrolling its two line LCD screen such as run start time and date time averaged concentration elapsed run time maximum and STEL values with times of occurrence etc Operating parameters selected and diagnostic information displays are also available Furthermore the personalDataRAM features complete large capacity internal data logging capabilities with retrieval through an externally connected computer The stored information up to 13 000 data points includes average concentration values maximum and STEL values with time information as well as tag numbers Selectable alarm levels with built in audible signal an
38. nsing chamber using the two black socket head screws Tighten screws firmly Similarly attach the other cup to the right side of the sensing chamber e Take the cyclone filter holder unit provided as part of the conversion kit and separate the 37 mm plastic filter holder from the metal cyclone by firmly pulling the two units apart e Carefully slide the large open end of the plastic filter holder over the cup with the external o ring previously attached to the sensing chamber Ensure that the cup is fully inserted into the filter holder 40 Carefully insert the large diameter open end of the metal cyclone into the other cup on the opposite side of the sensing chamber The cyclone inlet small short metal tube on side of cyclone can be oriented as desired upwards as shown in Figure 2 sideways downwards etc Ensure that the cyclone is fully inserted into the cup When ready to operate connect a length of tubing between the barbed fitting at the downstream end of the plastic filter holder and the pump to be used in combination with the pDR 1200 Perform a zeroing sequence see Sections 6 5 2 and 8 1 before starting a run This completes the conversion of the pDR 1000AN to the pDR 1200 15 2 Conversion Procedure from pDR 1200 to pDR 1000AN To effect this conversion use model pDR UB conversion kit As you remove parts from the pDR 1200 in order to attach the conversion kit components store these parts carefully for possible future
39. o Figure 1 or 2 the upper mid section of the personalDataRAM contains the optical sensing chamber This chamber is the only internal section that the user should access for maintenance purposes see Section 12 2 On the model pDR 1000AN air enters the sensing chamber through the two slot shaped inlets one on the front and other on the back under the protective bumper During instrument operation those two openings should remain unobstructed in order to ensure free access of the surrounding air When the model pDR 1000AN is used as personal monitor 1 clipped to a person s belt the rear air inlet opening may be partially obstructed but care should be exercised in ensuring that the front air inlet remains free of any obstructions On the model pDR 1200 air enters the sensing chamber through the opening in the cyclone receptacle cup black cup on right side of sensing chamber passes through the photometric stage and exits through the opening in the filter holder receptacle cup black cup on left side of sensing chamber after which the air passes through the filter 6 0 PREPARATION FOR OPERATION 6 1 Battery Installation When shipped from the factory the personalDataRAM will arrive without its replaceable 9V battery installed Two fresh alkaline batteries Duracell type MN1604 are factory packed separately in the carrying case one of which should be installed in the personalDataRAM when preparing it for operation NOTE Whene
40. odel pDR 1200 3 4 Air Sampling Guidelines 3 5 Environmental Constraints and Certifications ACCESSORIES 4 2 Optional Accessories INSTRUMENT LAYOUT 5 1 Front Panel 5 3 Right Side Panel 2 5 4 Back Panel and Belt Clip 5 5 Sensing Chamber L PREPARATION FOR OPERATION 6 1 Battery Installation 2 6 2 Battery Replacement 6 3 AC Power Supply 6 4 Rechargeable Battery Module 6 5 Zeroing the personalDataRAM 80800006 6 5 1 Zeroing the model pDR 1000AN 6 5 2 Zeroing the model pDR 1200 6 6 pDR 1200 Filter Holder Installation E ix 00 00 TDA 9 7 0 8 0 9 0 10 0 11 0 12 0 13 0 OPERATING 5 7 1 Start Up Mode 7 2 Ready Mode 7 3 Run and Logging Mode 7 3 1 DataLogesmp 7 3 2 Clearing Memory s sesso 7 3 3 Run Mode Display and Commands OPERATION 8 4 Abbreviated Run Start Stop Instructions 8 Resetting Proc dure COMMUNICATIONS WITH COMPUTER 9 1 Hardware and Software Requirements 9 2 Software Installation Procedure s i itS 9 3 Communications Between personalDataRAM and Computer 9 4 Real Time RS 232 ANALOG SIGNAL OUTPUT 12 2 Cleaning of Optical Sensing Chamber 12 2 1 Model pDR 1000AN 12 2 2 Model pDR 1200 1 n ete e 12 3 Cyclone Cleaning Model pDR 1200 only CALIBRATION 13 1 Factory Calibration 1
41. on kit into the two holes in the bumper while holding down the bumper and tighten gently do not over tighten making sure that the heads of these screws are well inside their cavities in the bumper Perform a zeroing sequence see Sections 6 5 1 and 8 1 before starting a run This completes the conversion from a pDR 1200 to a pDR 1000AN 41 16 0 SEQUENCE OF KEYSTROKES AND SCREENS pDR 1000AN 1200 ADR 1200S and HPM 1000 Start Up and Survey Run Mode Without Data Logging ON OFF START ZERO ENTER GO TO RUN NEXT Use Zeroing Kit here ENTER NEXT ZEROING V 2 00 73 sec Start Up CALIBRATION OK Mode NEXT START RUN ENTER READY NEXT ENTER LOGGING DISABLED CONC 0 047 mg m TWA 0 039 mg m EXIT NEXT Y ENTER N NEXT ST 08 18 26MAY15 ENTER NEXT MAX 0 113 mg m ON OFF EXIT NEXT Mode T 09 59 22 MAY 15 disabled EXIT NEXT BATTERY LEFT 83 EXIT NEXT ANALOG OUTPUT 0 4 000 mg m CONC 0 044 mg m TWA 0 040 mg m ON OFF Y ENTER N NEXT ENTER NEXT power off CONC 0 036 mg m TWA 0 039 mg m 42 Start Up Set Up and Run Mode With Data Logging ON OFF START ZERO ENTER GO TO RUN NEXT Use Zeroing Kit here ENTER NEXT ZEROING 1 00 Start Up 73 sec Mode CALIBRATION OK NEXT START RUN ENTER READY NEXT NEXT LOGGING DISABLED ENTER LOG INTRVL 600s TAG 4 ALARM INSTANT LEVEL 0 50 mg m NEXT EN
42. onds Alarm level adjustment range selectable over entire measurement range Alarm averaging time real time 1 to 60 seconds or STEL 15 minutes Datalogging averaging periods 1 second to 4 hours Total number of data points that can be logged in memory 13 391 Number of data tags data sets 99 maximum Logged data Each data point average concentration time date and data point number Run summary overall average and maximum concentrations time date of maximum total number of logged points start time date total elapsed time run duration STEL concentration and time date of occurrence averaging logging period calibration factor and tag number 2 2 Elapsed time range 0 to 100 hours resets to 0 after 100 hours Time keeping and data retention gt 10 years Readout display LCD 16 characters 4 mm height x 2 lines Serial interface RS 232 4 800 baud Computer requirements IBM PC compatible 486 Pentium or higher Windows 795 or higher gt 8 MB memory hard disk drive CD ROM Drive VGA or higher resolution monitor Outputs Real time digital signal 1 concentration 16 character code simplex mode Real time analog signal 0 to 5 V and 4 to 20 mA Selectable full scale ranges 0 0 1 0 0 4 0 1 0 0 4 0 0 10 0 40 0 100 and 0 400 mg m Minimum load impedance for voltage output 200 Maximum load impedance for current output 300 Q when powered
43. or disconnecting them e Shut off personalDataRAM before replacing the internal battery or when plugging in or disconnecting the AC power supply or the optional rechargeable battery pack 3 3 Handling and Operation 3 3 1 Model pDR 1000AN The model pDR 1000AN can be operated in any position or orientation Exposure to high intensity fluctuating light of the interior of the sensing chamber through the front and back slotted air openings see Section 5 5 should be avoided Such large intensity transients may cause erroneous readings Direct access of sunlight to the sensing chamber should be prevented Typical modes of instrument support handling include e Hand held Do not obstruct or cover the sensing chamber opening slots on front and back of unit e Belt attached Use belt clip provided as standard accessory The unit can be worn on a waist belt or with optional shoulder belt model pDR SS for breathing zone monitoring e Tabletop operation The pDR 1000AN can be placed on a table either in an upright position 1 resting on its lower protective bumper or on its back 1 resting on the rear edges of its two protective bumpers e Tripod mounted The unit can be attached to any standard tripod using the threaded bushing on the bottom of the monitor see Figure 3 e Fixed point operation The model pDR 1000AN can be mounted at a fixed location e g wall or post using the optional wall mounting bracket model pDR WB
44. p in line filter unit into the nipple Start pumping the hand pump until the Z Pouch begins to bulge and proceed with the steps in Section 8 1 pressing the keys of the instrument through the wall of the Z Pouch Then slowly continue to pump to maintain positive pressure within the Z Pouch After completing the zeroing step 2 of Section 8 1 procedure open the Z Pouch zipper and remove the pDR 1000AN Close the zipper and flatten the Z Pouch while plugging its nipple in order to prevent dust contamination of the interior of the Z Pouch The pDR 1000AN is now zeroed and ready for a measurement run 6 5 2 Zeroing the model pDR 1200 To provide the particle free air required to zero the pDR 1200 either of two methods can be used a place the instrument on a clean air bench or in a clean room or b connect to the cyclone inlet the green zeroing filter cartridge supplied with the pDR 1200 In either case proceed as follows After implementing either of the two methods above run the attached pump for at least one minute e g at 2 liters minute and then proceed as described in Section 8 1 of this instruction manual while continuing to run the pump or leaving the unit in the clean air environment Once the CALIBRATION OK message appears on the pDR 1200 display stop the pump and disconnect the zeroing filter cartridge from the cyclone inlet or remove pDR 1200 from clean bench room The pDR 1200 is now zeroed and ready for a me
45. r is placed side by side collocated to the pDR 1000AN to be calibrated and the two units should be started simultaneously For the model pDR 1200 its own filter and attached pump can be conveniently used for the same purpose Weigh and load into filter holder a fresh membrane filter e Start pump e Immediately turn on personalDataRAM and start a run such that the pump and the personalDataRAM are started nearly simultaneously 35 The duration of this comparison run should be sufficient to collect mass of at least 1 mg on the reference filter in order to permit accurate weighing of the collected mass by means of an analytical balance The time weighted average TWA reading of the personalDataRAM can be used to estimate the required sampling time to collect the above mentioned mass on the filter To estimate the required sampling time ET as measured on the personalDataRAM in minutes read the TWA value see Section 8 3 after an elapsed time ET of one minute or more and apply the following relationship gt 500 TWA For example if TWA 2 5 mg m then gt 200 minutes approximately 3 hours If the TWA value changes significantly as the run proceeds recalculate the required ET accordingly At the end of the run after time ET has elapsed record TWA ET and the flow rate Q used to sample the air Weigh the filter on an analytical balance and obtain Am the mass increment due to the collected particles Cal
46. re conversion Proceed as follows Pull off both the cyclone and the filter holder from their respective cups on the two sides of the sensing chamber Loosen the two screws that hold each of the two cups on the sides of the sensing chamber total of 4 screws and remove the two side cups Loosen the single screw on each of the two front and back gasketed sealing covers enclosing the sensing chamber and remove the two covers Identify the two flat sensing chamber cover plates provided in the conversion kit one face of each of each of these two plates has a dull black finish antireflective avoid touching those surfaces Position one of the two sensing chamber cover plates over the open front of the sensing chamber with the dull surface on the inside and such that the hole in the plate is aligned with the corresponding threaded mounting hole on the upper wall of the sensing chamber Insert and tighten firmly black socket head screw provided with the conversion kit making sure that the plate is aligned perfectly with the top of the sensing chamber Similarly attach the other cover plate to the rear of the sensing chamber with the dull surface facing inward Loosen and remove the two small screws on the top surface of the sensing chamber Position large protective bumper provided in the conversion kit over sensing chamber pushing down until properly seated Insert the two top screws two shiny Phillips head screws provided in the conversi
47. rt and tighten socket head screws firmly making sure that the two plates are aligned perfectly with the top of the sensing chamber e Reposition large protective bumper over sensing chamber pushing down until properly seated Insert the two top screws holding down the bumper and tighten gently do not over tighten e Check optical background by zeroing the pDR 1000AN as indicated in Section 8 1 If the sensing chamber cleaning was performed correctly the message CALIBRATION OK should be displayed at the end of the zeroing period 12 2 2 Model pDR 1200 e Remove the two screws one in the front and one in the back holding the front and back gasketed covering plates of the sensing chamber and set these plates aside such that they may be reattached in the same location as they were previously e Using filtered particle free pressurized air blow the inside of sensing chamber taking great care in not marring or scratching any of the exposed surfaces e Reposition the two sensing chamber cover plates in the same location front and back as they had been originally Insert and tighten socket head screws firmly making sure that the two plates are aligned perfectly with the top of the sensing chamber e Check optical background by zeroing the pDR 1200 as indicated in Section 8 1 If the sensing chamber cleaning was performed correctly the message CALIBRATION OK should be displayed at the end of the zeroing period 12 3 Cyclone Cleaning Mod
48. stored in the personalDataRAM This page also serves to display real time numerical data when the computer is connected to the personalDataRAM in the Run Mode Graph data This page enables the downloading and graphing of stored data to the computer screen and to a printer In the Run Mode this page displays the real time data in graphic format NOTE Version 2 00 and greater does not possess graphing capability Configure pDR This screen allows the user to edit the operating logging parameters Click on the item to be edited and select or type in the new value 29 review the parameter values currently programmed into the personalDataRAM click on Get configuration After editing the parameters click on Set configuration to input the new values into the personalDataRAM program Most operations within pDR COM are self evidently labeled including fly over dialog boxes In addition instructions may be found in the On line Help files by selecting Help and then Contents The following operating logging parameters of the personalDataRAM are selected edited via the computer e Current date month and day of the month e Current time hour minute and second Display averaging time 1 to 60 seconds 1 second increments e Calibration factor 0 01 to 9 99 in 0 01 increments Logging interval 1 to 14 400 seconds in 1 second increments e Analog output full scale concentration 0 1 0 4 1 4 10 40 100 or 400 mg m
49. te for which the TWA value is one half of the initial value into the graph of Fig 7 and read the corresponding 050 particle size in micrometers This represents the mass median particle diameter of the aerosol For example if the TWA value without the cyclone was 0 8 mg m and the flow rate with the cyclone attached required to reduce the TWA to 0 4 mg m is 2 liters minute the mass median particle size as obtained from the curve of Fig 7 is approximately 5 5 um 38 Flow Rite liters minute Figure 7 GK 2 05 Cyclone Cut Point dso as a Function of Flow Rate 39 15 0 CONVERSION BETWEEN personalDataRAM VERSIONS The personalDataRAM user has the option to convert from a model pDR 1000AN to a model pDR 1200 or vice versa using the appropriate conversion kit To convert from a pDR 1000AN to a pDR 1200 1 from a passive air sampling configuration to an active one the user requires the model pDR AS conversion kit To convert from a pDR 1200 to a pDR 1000AN 1 from an active air sampling configuration to a passive one the user requires the model pDR UB conversion kit 151 Conversion Procedure From pDR 1000AN to pDR 1200 To effect this conversion use model pDR AS conversion kit As you remove parts from the pDR 1000AN in order to attach the conversion kit components store these parts carefully for possible future re conversion Proceed as follows e Remove the two screws on the top of the large protectiv
50. the maximum number of data points per tag is 1 000 or below a 33 MHz 486 DX processor will suffice Thermo Fisher Scientific custom hardware and software provided as standard accessories Digital communications cable model pDR DCC CD ROM disk 9 2 Software Installation Procedure Please consult CD ROM README files for installation procedure 28 93 Communication Between personalDataRAM and Computer To effect the communication between the personalDataRAM via the pDR COM software installed in the computer as described in the preceding section and the PC proceed as follows 1 Connect the personalDataRAM to one of the computer s serial ports using the pDR DCC cable provided This cable has 9 pin female connector for the computer port Key ON OFF the personalDataRAM and then key NEXT repeatedly until CONNECT TO PC is displayed on the personalDataRAM On the computer double click on the pDR COM icon A four tabbed notebook display should appear Click on the Com Port Select and select the port to which the pDR DCC cable has been connected From the four tabbed notebook displayed on the computer screen select the tab with the desired option The options are Main This page allows the user to input the personalDataRAM serial number or any other desired label and select the Serial Com Port Logged data This page allows the user to download tabulate print data or transfer to a CSV file the data
51. tom are 4 20 mA analog output positive Alarm output Digital data transmission Digital input Common ground signal returns 0 to 5 V analog output positive The digital communications cable provided as a standard accessory is to be inserted into this receptacle for interconnection to a computer for data downloading or to 14 reprogram parameters analog output cable is provided with flying leads for interconnection with other data processing and or control systems WARNING The modular jack receptacle on the side of the personalDataRAM should be used only for communications with computers and alarm circuitry Do not under any circumstance connect communications equipment e g telephone to this receptacle REAR AIR INLET TO SENSING FRONT AIR CHAMBER INLET TO SENSING CHAMBER DIGITAL COMMUNICATIONS PORT BELT CLIP Figure 5 RIGHT SIDE PANEL MODEL 1000 SHOWN WITH BELT CLIP ATTACHED 15 CYCLONE BELT CLIP DIGITAL COMMUNICATIONS PORT Figure 6 RIGHT SIDE VIEW MODEL pDR 1200 SHOWN WITH BELT CLIP ATTACHED 5 4 Back Panel and Belt Clip The back panel consists of a label with important user information on safety procedures and certifications model and serial numbers etc and is provided with mounting hardware for the attachment of the belt clip kit see Figures 5 or 6 for mounting configuration of the belt clip 5 5 Sensing Chamber Referring t
52. tremes outside its specified range and from any exposure to precipitation The personalDataRAM has received intrinsic safety approval No 2G 4126 0 from the U S Mine Safety and Health Administration MSHA for use in coal mining environments containing methane gas The MSHA approval type 2G closely resembles the standard intrinsic safety rating as defined by Class 1 Div 1 Group D This approval makes the MIE personalDataRAM the only commercially produced direct reading dust monitor so certified by MSHA and therefore the only instrument of this type permitted to be used routinely in U S coal mines similar environments The personalDataRAM is certified for compliance with the electromagnetic radiation limits for a Class A digital device pursuant to part 15 of the FCC Rules The unit also complies and is marked with the CE European Community approval for both immunity to electromagnetic radiation and absence of excessive emission interference 4 0 ACCESSORIES 4 1 Standard Accessories The personalDataRAM is provided to the user with the following standard accessories Soft shell carrying case model pDR CC 1 e Digital communications cable model pDR DCC e Analog signal alarm output cable model pDR ANC e Communications software disk model pDR COM Z Pouch zeroing kit model pDR ZP for use with pDR 1000AN only Zeroing filter cartridge and tubing model pDR ZF for use with pDR 1200 only Belt clip
53. two important capabilities a to measure the particulate matter concentration of a specific aerodynamic size fraction and b to determine the mass median size of a particle population These two applications will be discussed in what follows For both these applications a variable measured flow rate pump is required such as the model pDR PU for which a separate instruction manual is provided 141 Size Fractionated Monitoring The pDR 1200 can be used to monitor a specific particle size fraction below a selectable cut off equivalent aerodynamic diameter The particle size cut point can be selected by adjustment of the sampling flow rate The higher the flow rate through the cyclone the smaller the cut off particle diameter Figure 7 is a graph showing the dependence of the particle cut off size in micrometers as a function of the sampling flow rate in liters per minute The cut off size is the particle aerodynamic diameter at which the collection efficiency of the cyclone is 50 or conversely the size at which the cyclone transmission is 50 For example to obtain a particle size cut off of 2 5 PM2 5 the required sampling flow rate is 4 liters minute A that flow rate only particles smaller than approximately 2 5 um are allowed to pass into the pDR 1200 sensing stage to be monitored and then to be collected on the filter As can be seen on Fig 7 the lowest particle size cut for the GK 2 05 cyclone included with the pDR 1200
54. vacuum pump not included such as the pDR PU a personal type pump for its operation In addition the model pDR 1200 includes a particle size selective inlet cyclone which permits size segregated measurements 1 PM10 2 5 respirable etc as well as enabling the user to perform aerodynamic particle sizing by varying the sampling flow rate The model pDR 1200 incorporates downstream of its photometric sensing stage a standard 37 mm filter holder on which all sampled particles are collected for subsequent analysis or gravimetric referencing calibration if so desired The personalDataRAM is the result of many years of field experience acquired with thousands of units of its well known predecessor the MIE MINIRAM and embodies many technological advances made possible by the latest electronic hardware and software The personalDataRAM is also a worthy miniaturized companion to the DataRAM 4 a recognized paragon of portable aerosol monitors The personalDataRAM is a high sensitivity nephelometric i e photometric monitor whose light scattering sensing configuration has been optimized for the measurement of the respirable fraction of airborne dust smoke fumes and mists in industrial and other indoor environments The personalDataRAM is an ultra compact rugged and totally self contained instrument designed for hand held belt worn as well as unattended operation It is powered either by its internal replaceable 9V battery or by a
55. ve shock vibration temperature or humidity As a practical guideline the personalDataRAM should be handled with the same care as a portable CD player If the personalDataRAM has been exposed to low temperatures e g in the trunk of a car during winter for more than a few minutes care should be taken to allow the instrument to return near room temperature before operating it indoors This is advisable because water vapor may condense on the interior surfaces of the personalDataRAM causing temporary malfunction or erroneous readings Once the instrument warms up to near room temperature such condensation will have evaporated If the personalDataRAM becomes wet e g due to exposure to water Sprays rain etc allow the unit to dry thoroughly before operating Whenever the personalDataRAM is shipped care should be taken in placing it in its carrying case and repackaging it with the original cardboard box with the factory provided padding 3 2 Safety Instructions e Read and understand all instructions in this manual Do not attempt to disassemble the instrument If maintenance is required return unit to the factory for qualified service The personalDataRAM should be operated only from the type of power sources described in this manual e When replacing the internal 9V battery follow the instructions provided on the back panel of the unit e Shut off personalDataRAM and any external devices e g PC or Laptop before connecting
56. ver the personalDataRAM is to be left unused for an extended time 1 6 longer than a month the 9V battery should be removed from the unit Removing the battery will lose neither the program time date keeping nor stored data To install the battery proceed as follows e Hold the personalDataRAM upside down e Loosen thumbscrew that secures the battery compartment cover see Figure 3 or 4 and remove that cover 17 e Observe battery polarity and the back panel battery orientation pattern the negative battery terminal is the one closer to the side of the instrument e Insert the battery by sliding it in until it bottoms out It should protrude slightly above the bottom surface of the instrument e Place battery compartment cover over battery and while pushing down the cover firmly taking care that the cover seats flush on the bottom surface of the personalDataRAM tighten thumbscrew securely 6 2 Battery Replacement Normally only a 9V Duracell type MN1604 alkaline batteries should be used with the personalDataRAM in accordance the MSHA intrinsic safety approval Only fresh batteries should be used in order to ensure the maximum operating time The personalDataRAM shuts itself off whenever the battery voltage falls below 6 volts while retaining all programming and data A fresh 9V alkaline battery at room temperature should provide typically 20 hours of continuous operation please note that not all manufacturers produce
57. vidual data points can be stored in a given tag i e up to a maximum of 13 000 points i e the total memory capacity of the personalDataRAM assuming that no other data had been logged in other tags This means that the total memory capacity of 13 000 data points can be grouped into any number of the available 99 data sets tags 7 3 2 Clearing of Memory Data recorded in the personalDataRAM memory can be erased either through an external PC command using the Thermo Scientfic pDR COM Custom Communications software provided as a standard accessory or resetting the instrument see Section 8 5 The PC method permits to erase the data in any number of selected tags whereas the resetting method results in the deletion of all data stored in the personalDataRAM 7 3 3 Run Mode Display and Commands When a measurement run has been initiated see Section 8 3 the user has the following display choices a Instantaneous and time averaged concentrations both on the same screen b Elapsed run time and run start time and date both on the same screen c Maximum displayed concentration from run start and time date at which current maximum occurred d Short term excursion limit STEL from run start and time date at which current STEL occurred e Remaining battery charge and if logging function is enabled remaining free memory f Analog output concentration range if enabled The user can command the termination of the run at any t
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