Resumen del contenido incluido en la página 1
Model 633
®
Aethalometer
Black Carbon Monitor
User Manual
© TELEDYNE ADVANCED POLLUTION INSTRUMENTATION
9480 CARROLL PARK DRIVE
SAN DIEGO, CA 92121-5201
USA
Toll-free Phone: 800-324-5190
Phone: 858-657-9800
Fax: 858-657-9816
Email: api-sales@teledyne.com
Website: http://www.teledyne-api.com/
Copyright 2012-2013 07645A DCN6170
Teledyne Advanced Pollution Instrumentation 23 April 2013
Resumen del contenido incluido en la página 2
Resumen del contenido incluido en la página 3
NOTICE OF COPYRIGHT © 2013 Teledyne Advanced Pollution Instrumentation, user manual expanded and edited with permission from Aerosol d.o.o./Magee Scientific. All rights reserved. TRADEMARKS ® The Aethalometer is a registered trademark of Magee Scientific and the instrument is manufactured by Aerosol d.o.o. in Slovenia. All other trademarks, registered trademarks, brand names or product names appearing in this document are the property of their respective owners and are used herein for
Resumen del contenido incluido en la página 4
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation This page intentionally left blank. ii 07645A DCN6170
Resumen del contenido incluido en la página 5
TABLE OF CONTENTS 1 INTRODUCTION 5 1.1 Description 5 1.1.1 ‘DualSpot™’ Technology 6 1.1.2 Automatic Zero and Span 10 1.1.3 User and Communications Interfaces 11 1.1.4 Modular Construction 12 1.2 Technical Specifications 13 1.3 Functional Description 14 2 SAFETY NOTES and LABELS 21 3. INSTRUMENT INSTALLATION 25 3.1 Unpacking the system 25 3.2 The sampling line 25 3.3 Powering on the Aethalometer 27 3.4 Filter tape installation 29 3.4 Manually lifting/lowering chamber optic
Resumen del contenido incluido en la página 6
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation 5.4 Manual flow meter calibration 55 5.5 Manual stability test 61 5.5 Manual clean air test 61 5.6 Cleaning the optical head 62 5.7 Changing the bypass cartridge filter 65 5.8 Calibrating the tape sensor 68 6 TECHNICAL SUPPORT and CONTACT INFORMATION 71 7 SPARE PARTS LIST 73 iv 07645A DCN6170
Resumen del contenido incluido en la página 7
1 INTRODUCTION 1.1 Description Figure 1. The Aethalometer® Model 633. The Model 633 represents the “Next Generation” version of the real‐time Aethalometer rack‐ mount instrument to measure Black Carbon (BC) particles in air. Please refer to the original Magee Scientific Aethalometer manual for a full description and background information on the method (http://mageesci.com/images/stories/docs/Aethalometer_book_2005.07.03.pdf). The Model 633 Aethalometer incorporates
Resumen del contenido incluido en la página 8
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation The Model 633 Aethalometer has been developed with input from the research and monitoring communities, and is designed for reliable operation under all conditions ranging from state‐of‐the‐art research to compliance monitoring. The leading innovations incorporated into the Model 633 include: The DualSpot™ measurement method, which solves the effects common to all
Resumen del contenido incluido en la página 9
® Teledyne Advanced Pollution Instrumentation Model 633 Aethalometer Black Carbon Monitor User Manual The ‘spot loading effect’ is a variable phenomenon which appears as a gradual reduction of instrumental response as the aerosol deposit density of the filter tape increases from zero to the predetermined limit of ‘Maximum Attenuation’ (Gundel 1984, Weingartner 2003, Arnott 2005, Virkkula 2007, Kanaya 2008). When the filter tape advances to a fresh spot, the data undergoes a di
Resumen del contenido incluido en la página 10
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation Figure 2. Aethalometer data sorted and averaged according to loading (attenuation, ATN) on spot – roadside location in London, UK (top); urban site in Boston (Roxbury), USA (bottom). The London data show a systematic reduction at increasing loadings; while the Boston data do not. This demonstrates that any method intended to compensate for the ‘spot loading effect’ must be auto‐adap
Resumen del contenido incluido en la página 11
® Teledyne Advanced Pollution Instrumentation Model 633 Aethalometer Black Carbon Monitor User Manual It is clear that the effect, when present, is linear with loading (‘ATN’). This can be represented as: BC (reported) = BC (zero loading) * { 1 ‐ k • ATN } where BC (zero loading) is the desired ambient BC value that would be obtained in the absence of any loading effect; and k is the ‘loading compensation parameter’ (similar to Virkkula, 2007). The an
Resumen del contenido incluido en la página 12
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation IR, 1 second raw BC1 raw BC2 80000 compensated BC 60000 40000 20000 0 2000 3000 4000 time (sec) Figure 3. The timeseries of 633 raw and compensated BC concentrations with 1 second timebase – note the extreme concentrations and loading effects. 1.1.2 Automatic Zero and Span The Model 633 Aethalometer is capable of automatically checking the ‘zero‐air’ response of the i
Resumen del contenido incluido en la página 13
® Teledyne Advanced Pollution Instrumentation Model 633 Aethalometer Black Carbon Monitor User Manual 2500 1 second time-base 30 per. Mov. Avg. (1 second time- 2000 base) 1500 Point-to-point variation @ 1 second: 1000 3 3 3 126 ng/m 131 ng/m 119 ng/m 500 0 14:30:00 14:35:00 14:40:00 14:45:00 14:50:00 14:55:00 15:00:00 15:05:00 15:10:00 -500 Figure 4. ‘Zeroair’ check – the Model 633 Aethalometer switches from sampling ambient air to filtered air – 1 second time resolution pointtopoint v
Resumen del contenido incluido en la página 14
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation 1.1.4 Modular Construction The Model 633 Aethalometer is constructed with a modular design, so that sub‐units may be easily serviced. The only item requiring attention in routine use is cleaning of the optical insert to remove accumulated dust or other contamination which may be brought in with the sample air stream. The optical chamber is attached with a bayonet fitting for quick remov
Resumen del contenido incluido en la página 15
® Teledyne Advanced Pollution Instrumentation Model 633 Aethalometer Black Carbon Monitor User Manual 1.2 Technical Specifications Operation: Supply voltage: 100‐240 V~, 50/60 Hz Max power consumption: 90W Measurement wavelengths: 370, 470, 525, 590, 660, 880 and 940 nm Air flow: adjustable 2, 3, 4 and 5 LPM Environmental operating conditions: Indoor use Altitude: up to 3000 m with internal pump, other configurations possible Temperature range: 10 – 40 degrees Celsius
Resumen del contenido incluido en la página 16
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation 1.3 Functional Description The Model 633 features modular design and is composed of several subsystems which are so interconnected that most simple and safe handling of the instrument is possible. Presented here are a functional block diagram followed by a flow diagram. Figure 5. Model 633 functional block diagram 14 07645A DCN6170
Resumen del contenido incluido en la página 17
® Teledyne Advanced Pollution Instrumentation Model 633 Aethalometer Black Carbon Monitor User Manual ENCLOSURE The Model 633 enclosure is very robust and made from sheet metal. The enclosure mechanically protects the delicate inner measurement parts. The dimensions of the enclosure meet the rack mount standard for the instrumentation. POWER SUPPLY The power supply module is composed of the mains inlet, the power supply electronics and the cooling fan. Since the power sup
Resumen del contenido incluido en la página 18
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation ETHERNET CONNECTOR The Ethernet connector allows the connection of the Model 633 measurement system to Ethernet based communication networks. COM1, COM2, COM3 CONNECTORS The COM connectors allow the connection of the system to RS232 based devices, like external sensors or dataloggers. USB CONNECTOR (rear panel) The USB connector allows the connection of the system to U
Resumen del contenido incluido en la página 19
® Teledyne Advanced Pollution Instrumentation Model 633 Aethalometer Black Carbon Monitor User Manual FLOWMETERS Two flow meters measure the airflow in different points in the system. One of them is used also in the air flow regulation loop. SOLENOID VALVES Three solenoid valves are used to switch the airflow through different airflow paths when the instrument is set in different operating modes like measure, tape advance or similar. CHAMBER LIFT MECHANISM The chamber lift mechanism
Resumen del contenido incluido en la página 20
® Model 633 Aethalometer Black Carbon Monitor User Manual Teledyne Advanced Pollution Instrumentation LIGHT SOURCE The light source integrates groups of LEDs of different light wavelengths. It is one of the main parts of the system. DETECTOR The detector detects what amount of light passes through the measurement tape. A special algorithm is used to calculate the black carbon concentration using the information from the detector and the flow meter. FRONT PANEL DOOR T
