Droplet UHSAS, Руководство оператора

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Manual, Ultra High Sensitivity Aerosol Spectrometer (UHSAS)
DOC-0210 Rev E-4
5
© 2017 DROPLET MEASUREMENT TECHNOLOGIES
T a b l e o f C o n t e n t s
Part I: Hardware ......................................................................................................... 8
1.0 Product Description ....................................................................................... 8
1.1 Introduction ..................................................................................................................... 8
1.2 Specifications and Features ............................................................................................. 9
1.3 Electrical Specifications ................................................................................................. 10
1.4 Physical Specifications ................................................................................................... 10
1.5 Operating Limits............................................................................................................. 10
2.0 Theory of Operation .................................................................................... 11
2.1 Optical System ............................................................................................................... 12
2.1.1 The Laser .................................................................................................................. 12
2.1.2 The Detection System .............................................................................................. 12
2.1.3 The Mechanical Housing .......................................................................................... 13
2.2 Flow System ................................................................................................................... 15
2.3 Analog Electronics .......................................................................................................... 16
2.3.1 Particle Signal Amplification and Tracking .............................................................. 16
2.3.2 Laser Power Monitoring .......................................................................................... 17
2.4 Digital Electronics System .............................................................................................. 17
2.4.1 ADCs and Peak Height Analysis ............................................................................... 17
2.4.2 Monitoring and Control ........................................................................................... 18
2.5 On-board PC ................................................................................................................... 19
3.0 Unpacking and Setting up the UHSAS ........................................................... 19
4.0 Using the Instrument ................................................................................... 21
4.1 Start-Up .......................................................................................................................... 21
4.2 Shutdown / Power Off Procedure ................................................................................. 25
5.0 Calibration .................................................................................................. 26
5.1 Calibration Overview ..................................................................................................... 26
5.1.1 Relative Gain Calibration ......................................................................................... 26
5.1.2 Absolute Calibration ................................................................................................ 26
5.2 Calibration Procedure .................................................................................................... 28
5.2.1 Reasons for Calibration ............................................................................................ 28
5.2.2 Step One: Relative Gain Calibration ......................................................................... 28