TSI Instruments SIZER 3321 Скачать руководство пользователя страница 42 | Manualshive

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TSI Instruments SIZER 3321 Скачать руководство пользователя страница 42

5-2

Model 3321 Aerodynamic Particle Sizer



Spectrometer

Elliptical

Mirror

Beam
Dump

Inner Nozzle/Sample Flow

(1 L /min)

Accelerating

Orifice Nozzle

T otal Flow

(5 L /min)

Aerosol In

Outer Nozzle/Sheath Flow

(4 L /min)

Filter

Filter

Filter

Filter

Sheath-Flow

Pump

Total-Flow

Pump

Absolute
Pressure

Transducer

Orifice

Sheath-Flow

Pressure

Transducer

Total-Flow

Pressure

Transducer

Collimated

Diode

Laser

Detection

Area

Beam-Shaping Optics

Figure 5-1

Aerosol Flow Through the Model 3321 APS

™

Spectrometer

After passing through the orifice, the sheath flow is reunited with the
sample flow at the accelerating orifice nozzle. This flow confines the
sample particles to the center stream and accelerates the airflow around
the particles. In this way, small particles (which can accelerate with the
flow) reach a higher velocity than larger particles (which, due to inertia, lag
behind the flow of the air stream).

Particle velocity is then measured in the optics chamber (refer to “

Signal Processing Path

After measurement, the particle stream exits the optics chamber, drawn by
the total flow pump. The combined flow is controlled by the total flow pump
and the pressure drop across the accelerating orifice nozzle.

Sample flow is filtered before and after each of the two pumps. The filter
upstream of the pump protects the pump from contamination. The filter
downstream of the pump prevents contamination of the flow as the pump
vanes wear.

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Содержание SIZER 3321

Страница 1: ...AERODYNAMIC PARTICLE SIZER SPECTROMETER MODEL 3321 USER S MANUAL P N 1930092 REVISION H SEPTEMBER 2013...

Страница 2: ......

Страница 3: ...IZER SPECTROMETER MODEL 3321 USER S MANUAL Product Overview 1 Unpacking and System Setup 2 Description of the APS Spectrometer 3 APS Spectrometer Operations 4 Theory of Operation 5 Contacting Customer...

Страница 4: ...tory of the Model 3321 Aerodynamic Particle Sizer Spectrometer Part Number 1930092 Revision Date Preliminary March 1997 Preliminary 2 September 1997 Final November 1997 October 1998 A July 2000 B Dece...

Страница 5: ...d by any person other than Seller The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated herein NO OTHER EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOS...

Страница 6: ...If any mal function is discovered please contact your nearest sales office or representative or call TSI at 1 800 874 2811 USA or 651 490 2811 Trademarks TSI TSI logo Aerodynamic Particle Sizer and Ae...

Страница 7: ...se blindness Take these precautions Do not remove any parts from the APS spectrometer unless you are specifically told to do so in this manual Do not remove the APS housing or covers while power is su...

Страница 8: ...vi Model 3321 Aerodynamic Particle Sizer Spectrometer 7 Ground Label inside bottom 8 Danger High Voltage Label Analog PC Board Figure 1 Location of Warning and Information Labels...

Страница 9: ...ould result in serious injury to you or cause irrevocable damage to the instrument Follow the procedures prescribed in this manual to use the instrument safely Caution or Warning Symbols The following...

Страница 10: ...viii Model 3321 Aerodynamic Particle Sizer Spectrometer This page intentionally left blank...

Страница 11: ...ates 1 3 System History 1 4 CHAPTER 2 Unpacking and System Setup 2 1 Packing List 2 1 Mounting the Sensor 2 2 Ventilation Requirements 2 3 Power Connection 2 4 Connecting the Computer 2 4 I O Port 2 5...

Страница 12: ...ial Data Commands C 1 Pin Connectors C 1 Baud Rate C 2 Parity 7 Bits Even C 2 Stop Bits and Flow Control C 2 Commands C 3 Set Commands C 5 Action Commands C 13 Read Commands Polled C 16 Unpolled Comma...

Страница 13: ...ectrometer Optics Cross Section 5 4 5 3 Typical Example of a Double Crested Signal 5 5 A 1 Location of EPROM Chips on APS Spectrometer Digital PC Board A 8 C 1 SERIAL PORT Pin Designations C 1 C 2 Ser...

Страница 14: ...xii Model 3321 Aerodynamic Particle Sizer Spectrometer This page intentionally left blank...

Страница 15: ...e Powder Disperser Manual part number 1933769 TSI Incorporated Model 3306 Impactor Inlet Manual part number 1933787 TSI Incorporated S u b m i t t i n g C o m m e n t s TSI values your comments and su...

Страница 16: ...xiv Model 3321 Aerodynamic Particle Sizer Spectrometer This page intentionally left blank...

Страница 17: ...er data collection system The Aerosol Instrument Manager software with Model 3321 Module is included with the sensor to provide computer controlled operation and data interpretation The Model 3321 inc...

Страница 18: ...the following areas Inhalation toxicology Atmospheric studies Ambient air monitoring Drug delivery studies Powder sizing Filter and air cleaner testing Indoor air quality monitoring Biohazard detecti...

Страница 19: ...laser beams resulting in two distinct signals for each particle As shown in Figure 1 2 the Model 3321 overlaps the two laser beams producing one double crested beam profile Each particle creates a si...

Страница 20: ...particle instruments The Model 3320 APS spectrometer is a complete redesign of earlier APS spectrometer models and began shipping in early 1997 This smaller ruggedized sensor includes improvements su...

Страница 21: ...and accessory kit Please compare the list to the items you received If any items are missing notify TSI immediately Table 2 1 Accessories Packing List Qty Description Part No 1 Model 3321 Sensor 3321...

Страница 22: ...re installed in the cabinet using integrated 8 32 UNC threaded fasteners and can be removed by unscrewing to allow other mounting fasteners to be used Note If the cabinet is mounted to a plate drill h...

Страница 23: ...be installed with at least 2 inch 50 mm clearance between the back panel and any other surface The sides should have at least 2 inch 50 mm clearance between the cabinet and any other surface Most imp...

Страница 24: ...s self regulating Toggle the on off switch at the POWER connection to the on position to verify the sensor has power Alternately connect 24 VDC to the DC POWER IN connection Contact TSI to order the n...

Страница 25: ...sing commands described in Appendix C This port also has two analog input pins to allow data logging of analog voltages from external devices such as temperature or relative humidity sensors Figure 2...

Страница 26: ...2 6 Model 3321 Aerodynamic Particle Sizer Spectrometer This page intentionally left blank...

Страница 27: ...ample setup and view detailed instrument status The back panel provides power and communications connections as well as sample exhaust outlet Internal components consist of the flow system the optics...

Страница 28: ...ont Panel of the Model 3321 APS Spectrometer The 320 240 pixel LCD display provides continuous real time display of sample data Sample data includes Size distribution Concentration Mean aerodynamic pa...

Страница 29: ...play This will cause three buttons to appear at the bottom of the screen Continue turning until the Start button is highlighted then press the control knob To change from the graphic display to the sy...

Страница 30: ...e a particle passes through the sensor In normal room air the LED will appear to be lit constantly When sampling aerosols in low concentrations the LED will appear to flicker The amber HI CONC LED ind...

Страница 31: ...switch DC Power in Pump Exhaust Cooling Fan Serial Port Analog Out Time Of Flight Pulse Out I O Port Figure 3 3 Back Panel of the Model 3321 APS Spectrometer AC Power Connector The AC Power Connector...

Страница 32: ...ions Table 3 1 Power Connections for 24V DC Power Input Pin Number Signal 1 GND Chassis GRN YEL 2 24V Blue 3 GND Brown Shield 4 Chassis Shield Pump Exhaust Sample aerosol is exhausted through the Exha...

Страница 33: ...l input and three digital output pins It allows various signals to be sent to a data logger or control switches Refer to Appendix C Using Serial Data Commands for serial commands to control the I O Po...

Страница 34: ...des amplified raw signals from the photodetector This signal can be used with an oscilloscope for example to examine secondary characteristics of the pulses I n t e r n a l C o m p o n e n t s The loc...

Страница 35: ...M Spectrometer 3 9 Analog PC Board Digital PC Board Sheath Flow Pump Filters Detector PC Board Power Supply Optics Power PC Board Total Flow Pump Laser PC Board Figure 3 6 Internal Diagram of the Mode...

Страница 36: ...3 10 Model 3321 Aerodynamic Particle Sizer Spectrometer This page intentionally left blank...

Страница 37: ...displayed on the front panel may not exactly match data recorded with the Aerosol Instrument Manager software due to rounding differences Also concentration displayed for 0 523 m on the front panel in...

Страница 38: ...ress the control knob The APS spectrometer will immediately begin sampling according to the parameters set on the menu Figure 4 1 APS Spectrometer Menu 5 Monitor the display to verify that sampling is...

Страница 39: ...g a serial data command as described in Appendix C Baud Rate Select the baud rate at which the sensor will communicate with your computer Use the control knob to select 38400 19200 or 9600 The default...

Страница 40: ...APD temperature This setting will always be enabled when the instrument is first powered on Alarm Level pt cm 3 Level of total particle concentration at which the APS spectrometer will issue a high co...

Страница 41: ...of flight measurement to an aerodynamic particle diameter For convenience this particle size is binned into 52 channels on a logarithmic scale The particle range spanned by the APS spectrometer is fr...

Страница 42: ...low confines the sample particles to the center stream and accelerates the airflow around the particles In this way small particles which can accelerate with the flow reach a higher velocity than larg...

Страница 43: ...edges of the beams to give a clean beam under the particle stream A window is used solely as a sealing surface to keep the optics chamber separate from the optical elements and a final aperture is us...

Страница 44: ...te Plate Pos Spherical Lens Neg Spherical Lens Laser Steering Laser PCB Laser Diode Polarization Rotator Window Aperture Plate Aperture Plate Beam Stop 1st Polarization Beam Stop 2nd Polarization Elli...

Страница 45: ...referred to as a double crested signal consists of a pair of peaks Figure 5 3 Typical Example of a Double Crested Signal Each peak represents the presence of the particle in the center of the individ...

Страница 46: ...cates the zero crossings of the differentiated double crested analog signal which occur when the slope of the signal is equal to zero Zero crossings DIFF signal transitions are positive going for a va...

Страница 47: ...ed and recorded Digital Module The GATE and DIFF digital signals from the analog module are used to trigger a high speed timer which has 4 0 ns resolution and a maximum range of 4 096 s After the gate...

Страница 48: ...ceeds 4 096 s This happens when a very large particle or a recirculating particle travels very slowly through the measurement area Detection Threshold 4 096 s The second PAL is the Counting PAL and is...

Страница 49: ...the PALs are finished recording the data the timer is reset for the next particle P a r t i c l e C o i n c i d e n c e Particle coincidence is typically defined as more than one particle in the viewi...

Страница 50: ...5 10 Model 3321 Aerodynamic Particle Sizer Spectrometer This page intentionally left blank...

Страница 51: ...r application questions about this system contact an applications engineer at one of the locations listed below TSI Incorporated 500 Cardigan Road Shoreview MN 55126 USA Phone 1 800 874 2811 USA or 1...

Страница 52: ...will need this information when you call The instrument model number The instrument serial number A purchase order number unless under warranty A billing address A shipping address Use the original p...

Страница 53: ...The conditions under which the instrument is used will greatly affect this schedule If the instrument is used to sample unusually dirty environments the times between maintenance should be shortened...

Страница 54: ...ment are susceptible to electro static discharge ESD damage Use ESD precautions to avoid damage Use only a table top with a grounded conducting surface Wear a grounded static discharging wrist strap 1...

Страница 55: ...instrument 17 Apply power to the instrument with the switch on the back panel 18 Check that the flows are correct C l e a n i n g t h e O u t e r N o z z l e Clean the nozzles according to the mainten...

Страница 56: ...sufficient and remove the cover straight upward 4 Remove the outer inlet nozzle by gripping it and lifting straight up 5 Grip the inner nozzle and lift straight up 6 Remove the two screws securing th...

Страница 57: ...Tilt the digital printed circuit board back down until the ribbon cable connector can be plugged back into the board Plug in the ribbon cable connector 21 Tilt the digital printed circuit board down f...

Страница 58: ...a table top with a grounded conducting surface Wear a grounded static discharging wrist strap 1 Switch the power off using the switch on the back of the cabinet and unplug the power cord from the APS...

Страница 59: ...nnector on the back of the instrument 19 Apply power to the instrument with the switch on the rear panel 20 Check that the flows are correct R e p l a c i n g t h e E P R O M Normally the EPROM will n...

Страница 60: ...es two EPROM chips They should be labeled with seven digit part numbers It is important that they go in the correct sockets 7 Locate the EPROM sockets from Figure A 1 Figure A 1 Location of EPROM Chip...

Страница 61: ...18 Tighten the six screws holding the cover in place 19 Replace the outer inlet retaining ring and tighten firmly 20 Insert the power cord into the power entry connector on the back of the instrument...

Страница 62: ...A 10 Model 3321 Aerodynamic Particle Sizer Spectrometer This page intentionally left blank...

Страница 63: ...the APS spectrometer is powered up The pumps do not control the flows to the proper flow rates or the flows are erratic Check for blockage in the flow path The outlet in the back panel may be blocked...

Страница 64: ...or higher factory setting is 75 Note changing the power setting from the instrument calibration setting will change the calibration Rotate the knob to scroll the cursor down the menu until the laser...

Страница 65: ...itions and syntax Examples as well as input and troubleshooting directions are also provided P i n C o n n e c t o r s The Model 3321 has a single 9 pin D subminiature connector port on the back panel...

Страница 66: ...all software used with the instrument is set at the appropriate rate The baud rate must be set to 38 400 for correlated mode See SMT and SB commands P a r i t y 7 B i t s E v e n Parity is the additi...

Страница 67: ...specific request from the computer Unpolled commands in which the APS spectrometer automatically outputs data records at specific intervals No line feed characters are transmitted Either the requeste...

Страница 68: ...mand Fill command Fx Go sample Gx Halt command Laser on off Quick concentration report Sampling Sx Read Polled Commands R RF RI RL RO RPI RPS RPT RQA RQS RQT RR RTB RTD RTI RV Read accumulator Rb e Re...

Страница 69: ...baud rates or communications will fail The baud rate can also be changed from the APS spectrometer front panel menu see Table 4 1 SBx where x 0 for 9 600 1 for 19 200 2 for 38 400 Examples To se the...

Страница 70: ...calibration data is held in EEPROM and loaded into RAM on power up The SCA0 0 terminator also causes the calibration data to be tested for monotonicity and if the data in the calibration table is not...

Страница 71: ...the number of side scatter channels that will report SCRx where x 1 2 4 8 16 32 or 64 Note 64 is the default on power up Example To set the number of side scatter channels that will report to 16 SCR16...

Страница 72: ...ns 11 12 and 13 to 5 volts SD7 SF Set Front Panel Enable SF lets you disable the front panel of the Model 3321 to prevent clearing sample averages that are being read by an external computer SFx where...

Страница 73: ...the LED is updated every second Examples To light the HI CONC LED when the concentration 1500 particles cm3 SH1500 To prevent the HI CONC LED from lighting at any concentration SH65535 SL Set Laser P...

Страница 74: ...cc 2 volts 1 cc 1 volts 1 cc 0 volts 6 host Table C 3 Analog Voltage Output Settings SMA Setting BNC Analog Output Voltage V X 0 1 2 3 4 5 10 0 0 1 cc 2 cc 3 cc 4 cc 5 cc 1 cc 1 0 1 cc 2 cc 3 cc 4 cc...

Страница 75: ...mple mode and sample time for continuous sampling operation See S command for more details on starting stopping sampling according to SMT command SMTa t where a sample mode 0 means averaging mode 1 me...

Страница 76: ...he pumps on and off Spx y where x total pump status 0 off 1 on y sheath pump status 0 off 1 on Note Turn both pumps on with SP1 Turn both pumps off with SP0 Examples To set the total pump off and the...

Страница 77: ...nical state is echoed back A Perform APD Autocal Performs an automatic calibration of the Avalanche Photodetector if autocal is enable by the SMC command see SMC Example To perform automatic calibrati...

Страница 78: ...mulators with x If no x is provided it returns 1 or 0 to indicate active or inactive When active an S1 command begins a sample of SMT time and fill data is not cleared after each one second summation...

Страница 79: ...disables sampling The mode of sampling is set by the SMT command Sx where x is 0 1 or 2 through 65565 0 Disable sampling 1 Enable continuous sampling Previous sample data automatically cleared when ne...

Страница 80: ...carriage returns Example Response R0 100 Reads bins 0 to 100 R 100 Reads bins 0 to 100 R400 Reads bins 400 to 1023 R Reads bins 0 to 1023 RF Read Flags RF returns a four character hexadecimal value r...

Страница 81: ...analog ground The analog values are reported as a decimal number from 0 0 to 5 000 VDC All readings are instantaneous Example Response RI 100 2 43 1 93 Pin 1 has logic level high 5 VDC Pins 2 and 3 a...

Страница 82: ...RPT Read Total Delta P Reads the change in pressure across the nozzle flow orifice in Pascals Example Response RPT 130 72 RQA Read Aerosol Sample Flow Reads the aerosol sample flow rate in liters per...

Страница 83: ...l temperature of the Model 3321 Example Response RTB 298 2 Indicates the internal temperature is 298 2 K or 25 0 C RTD Read Temperature of Detector APD Reads the APD and optics temperature of the Mode...

Страница 84: ...g unpolled operation records that have been enabled are sent at the end of each averaging time All U parameters are retained in EEPROM Not all records available in all modes e g UAx command is not ava...

Страница 85: ...lator Report Record Report Record B Enables and disables reporting of Record B in unpolled operation UBx where x 1 Enables B Record x 0 Disables B Record UB will echo current setting 0 or 1 See Record...

Страница 86: ...te Side Scatter Data Report Record Report Record S Enables and disables reporting of Record S in unpolled operation USx where x 1 Enables S Record x 0 Disables S Record US will echo current setting 0...

Страница 87: ...on A if in autocal mode D if in autocal and autocal was done at the beginning of this sample X X for spare position tindex time index 0 to sample time value 1 note if enabled for unpolled operation th...

Страница 88: ...ocal and autocal was done at the beginning of this sample X X for spare position tindex time index 0 to sample time value 1 note if enabled for unpolled operation the record is always reported when ti...

Страница 89: ...led for unpolled operation the record is always reported when tindex 0 ffff 4 digit hex value for status flags see RF command stime sample time not corrected for dead time dtime dead time ms for 3321...

Страница 90: ...al 2 hump particles measured sum of reported channels evt 2 d1 dn particle counts in calibrated diameter channels n determined by SCA data usually 52 SS Data Record S CS S ANX tindex ffff stime dtime...

Страница 91: ...vel of I O connector pin 3 ref to GND pins 9 10 lpower laser power of maximum power lcur laser current ma spumpv sheath pump voltage tpumpv total pump voltage itemp inlet temperature in degrees C ex 2...

Страница 92: ...e Input Guidelines in this section No response after pressing Enter In unpolled mode Use the U0 command to disable unpolled mode Enter U1 if an OK is returned Serial cable Check the cable and the cabl...

Страница 93: ...Usable data up to 10 000 pt cm 3 Display Resolution 32 channels per decade of particle size logarithmic This results in 52 channels total 1 024 bins of raw time of flight data 4 nsec per bin in uncor...

Страница 94: ...erodynamic Particle Sizer Spectrometer Weight 10 kg 22 lb Fuse not replaceable by user internal to power supply not accessible by operator T 6 3A SB 250V TSI and TSI logo are registered trademarks of...

Страница 95: ...B back panel 3 5 baud rate C 2 beep C 13 begin unpolled operation C 20 BNC connector 2 5 BNC connectors 3 8 Analog Out 3 8 Pulse Out 3 8 Timeof Flight 3 8 C calibration A 9 change graphic display 3 3...

Страница 96: ...l Delta P C 18 read total flow C 18 related product literature xiii replacing EPROM A 7 replacing filters A 6 restart sample 3 3 returning for service 6 2 S safety v sample flow path 5 1 sample setup...

Страница 97: ...22 generate correlated paired report record report record C C 21 generate side scatter accumulator report record report record B C 21 generate side scatter data report record report record S C 22 unpo...

Страница 98: ......

Страница 99: ...to the following features Good Adequate Poor Readability Accuracy Completeness is everything there Organization finding what you need Quality and number of illustrations Quality and number of example...

Страница 100: ......

Страница 101: ...more information USA Tel 1 800 874 2811 UK Tel 44 149 4 459200 France Tel 33 4 91 11 87 64 Germany Tel 49 241 523030 India Tel 91 80 67877200 China Tel 86 10 8219 7688 Singapore Tel 65 6595 6388 P N 1...

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