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Summary of Contents for TSI Instruments 3760
- Page 1 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
- Page 2 Instruction Manual Model 3760 Condensation Nucleus Counter This manual is printed on cleanroom-compatible paper...
- Page 3 Part Number 1933760 / July 1991 / Revision C Copyright ©TSI Incorporated / September 1987 / All rights reserved TSI Incorporated / 500 Cardigan Road / P.O. Box 64394 / St. Paul, MN 55164 / USA Address 6879024 Telex No. Limitation of Warranty TSI Incorporated warrants that this product, under normal use and service, shall be free from defects in workmanship and material for a period of twelve (12) months from the date of shipment to the...
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Page 4: Table Of Contents
Contents About This Manual v Chapters 1 Introduction 2 Setup and Operation 2-1 What you Received 2- Setting up the CNC 2- Filling the CNC with Butanol 2- Flow Control—Vacuum Source 2- Status Lights 2- Draining the CNC of Butanol 2- Counting Single Particles 2- Viewing Analog Pulses 2- Correcting for Coincidence 2-... - Page 6 About This Manual The Model 3760 Condensation Nucleus Counter Instruction Manual is written for both the installer and the operator, whether a technician or the head of cleanroom contamination control. Organization This instruction manual is organized as follows: Chapter 1: Introduction Describes the sensor and gives a brief description of the many features of the CNC.
- Page 8 1 Introduction The Model 3760 Condensation Nucleus Counter (CNC) operates with the multisensor Cleanroom Monitoring System (CRMS) using the Model 3701 Multiplexer/Processor or the Model 3704 Single-Channel Processor in conjunction with an IBM personal computer. Refer to the CRMS Instruction Manual (P/N 1933700) and the CRMS Advanced Software Instruction Manual (P/N 930037) for detailed information about the complete monitoring system.
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Page 9: Advisory Labels
Figure 1-2 Advisory Labels: a identification label (on the underside); b power requirements label (on heatsink); c warning label (on the optics housing); d compliance label (on the underside) 1–2 Model 3760 Condensation Nucleus Counter... - Page 10 3700 ROM version level must be 1.4 or higher. (This is automatically true for 3700s with serial number 165 or higher.) The Model 3700 cannot distinguish among different types of CNCs (Models 3760 or 3020) so the display will be 2–1...
- Page 11 CNC if more than one type is used. DIP switch 5 must be off for the Model 3760; switches 5 and 7 must be on for the Model 3020. 2 Switch on the CNC once you connect power. If the CNC reservoir is filled with butanol, the CNC starts sampling and counting particles when you connect the vacuum.
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Page 12: Back Panel Of The Cnc
Figure 2-1 Back Panel of the CNC: a fill connector, b drain connector, c vacuum exhaust, d power Flow Control— The CNC flow, controlled by a critical orifice inside the instrument, requires an external vacuum source, such as the plant vacuum or central vacuum or a vacuum Vacuum Source pump outside the clean area. -
Page 13: Front Panel Of The Cnc
To dry the block faster and more completely, first seal off the vacuum exit tube and the purge-air inlet. The purge-air inlet is inside the cabinet next to the optics (see figure 2-3). 2–4 Model 3760 Condensation Nucleus Counter... -
Page 14: Inside View Of The Cnc
Figure 2-3 Inside View of the CNC; a Purge-Air Inlet and Filter The purge inlet tube has a porous plastic filter on one end. Remove the filter and insert a plug. Be sure that the drain connector from the bottle is attached to the mating connector on the CNC;... - Page 15 At a concentration of 35 particles/cm (1,000,000 particles/ft ), the coincidence error is only 0.02 percent. At a concentration of 1 x 10 particles/cm (2.8 x 10 ), the coincidence error is 6 percent. 2–6 Model 3760 Condensation Nucleus Counter...
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Page 16: Front-Panel's Main Circuit Board For The Cnc
Figure 2-4 Front-Panel’s Main Circuit Board for the CNC; Viewed from the Back For maximum accuracy, compute the actual particle concentration according to the following equation: exp (N Q t) where = the correct concentration (particles/cm = the indicated concentration (particles/cm Q = 46.7 cm t = 0.25 microsecond is the effective time each particle resides in the viewing volume... -
Page 17: Analog Pulse Trace Of The Photodetector Signal
Laboratory Room Air. The bottom trace is a 100x expansion of one of the pulses from the top trace. The pulse on the bottom trace is approximately 320 millivolts in amplitude and 0.25 microsecond wide. 2–8 Model 3760 Condensation Nucleus Counter... -
Page 18: Schematic Diagram Of The Cleanroom Cnc
3 Description of the CNC The Model 3760 CNC measures the number concentration of particles that measure 0.014 micrometer in diameter and larger. The particles are detected by condensing n=butyl alcohol vapor onto the particles, causing them to grow into droplets. - Page 19 The cabinet purse airflow (0.05 cfm) helps to cool the electronics within the cabinet and creates a slight negative pressure within the instrument. Particles that may be generated inside the cabinet are quickly carried out through the vacuum line and do not contaminate the surrounding area. 3–2 Model 3760 Condensation Nucleus Counter...
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Page 20: Specifications And Electrical Schematics
4 Specifications and Electrical Schematics Specifications The following specifications—which are subject to change—describe the most important data of the major components. Sample flowrate 1.41 L/min (0.05 cfm) Total exit flowrate 2.83 L/min (0.1 cfm) Vacuum source minimum 18 in. Hg (0.1 cfm) Particle size >0.01 µm Working fluid... - Page 21 4–2 Model 3760 Condensation Nucleus Counter...
- Page 22 Artisan Technology Group is your source for quality new and certified-used/pre-owned equipment SERVICE CENTER REPAIRS WE BUY USED EQUIPMENT • FAST SHIPPING AND DELIVERY Experienced engineers and technicians on staff Sell your excess, underutilized, and idle used equipment at our full-service, in-house repair center We also offer credit for buy-backs and trade-ins •...
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