TSI Instruments 3302A User manual

ISOKINETIC COUPLER FOR THE

MODEL 3302A AEROSOL DILUTER

AND MODEL 3340

LASER AEROSOL SPECTROMETER

USER’S GUIDE

Description

The Model 3302A Aerosol Diluter is used for many applications where

aerosol dilution is required. The dilution ratios and the calibrated flow

rate through the diluter are determined at 5 L/min. The Model 3340

Laser Aerosol Spectrometer (LAS) runs at a lower sampler flow rate. An

isokinetic coupler between the 3340 LAS and the 3302A Aerosol Diluter

is described here (Part Number 1140001) which will enable the use of

the 3302A Aerosol Diluter with the 3340 Laser Aerosol Spectrometer.

A sampling probe designed to allow low-flow isokinetic sampling to the

Laser Aerosol Spectrometer is inserted in a modified, Swagelok fitting

which couples to the 3302A outlet. Critical orifices protected by a filter

and an external pump (not supplied) are used to pull an auxiliary flow

which will maintain a flow of 5 L/min through 3302A, while maintaining

the necessary sample flow for the 3340 LAS.

3302A Aerosol Diluter

3340 Laser Aerosol Spectrometer

Operation

1. Install the 1:100 capillary into the 3302A Aerosol Diluter.

2. Connect the 1140001 Isokinetic Coupler to the bottom outlet port of the 3302A.

3. Place the assembly on top of the 3340 using a spacer or stand (not included). The tube from the 3340

inlet to the Isokinetic Coupler should be straight.

4. Connect and switch on the external pump (e.g. TSI model 3032).

5. Set the LAS sampling flow to 0.10 L/min.

6. Adjust the pressure across the capillary (paerosol) in the 3302A according to the calibration sheet

supplied with the instrument.

TSI Incorporated –Visit our website www.tsi.com for 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 6004852 Rev B ©2013 TSI Incorporated Printed in U.S.A.

Schematic

Parts List

Isokinetic Coupler (P/N 1140001) includes:

Connector fitting with isokinetic sampling probe

Critical orifice to set auxiliary flow

Absolute filter to protect orifices

Tubing

Accessories Needed

External pump to maintain main flow through coupler (e.g., TSI model 3032)

Stand to place 3302A on top of LAS (if not mounted in test rig)

3302A Aerosol Diluter

Coupler (114001), connectors, filter, orifices,

and connection to pump

Aerosol Diluter

Stand (Not Included)

3340 Laser Aerosol Spectrometer

This manual suits for next models

1

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