SKC GS-3 Conductive Plastic Respirable Dust Cyclone Instruction Manual

: June 12, 2024
: SKC

Table of Contents

Introduction
Getting Started
Operation
Maintenance
References
Accessories/Replacement Parts
SKC Limited Warranty and Return Policy
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

GS-3 Multiple-inlet Cyclone
Cat. Nos. 225-100 and 225-103
Operating Instructions
863 Valley View Road, Eighty Four, PA
724-941-9701
skcinc.com

Introduction

Description
The GS-3 Cyclone is a 10-mm lightweight conductive plastic sampler with multiple inlets that uses a standard three-piece 25 or 37-mm cassette and ﬁlter for collecting respirable dust particles.
The GS-3 Cyclone conforms to the ISO 7708/CEN criteria of a 4-μm 50% cut-point at 2.75 L/min* with minimum bias meeting the performance criteria in OSHA’s final silica rule. Other flow rates may be used to achieve cut-points for alternative applications. The GS-3 Cyclone is supplied with cassette adapter, bowl adapter, and grit pot.

Calibrated at UK Health and Safety Laboratories. Visit www.skcinc.com to view the collection eﬃciency curve.

SKC GS-3 Conductive Plastic Respirable Dust Cyclone -
Description

Required Equipment

Sample pump capable of specie ed ﬂ ow rate
1/4-inch ID (3/8-inch OD) Tigon® tubing for calibration train
Electronic calibrator
Calibration Jar (Cat. No. 225-111)
Cassette e Holder (Cat. No. 225-1)
Filter Cassette es sampling media (225 Series)

Getting Started

Assembling Cyclone with Cassette (Figure 1)
The GS-3 Cyclone is supplied fully assembled with bowl adapter and 37 or 25-mm cassette adapter dependent upon model (Cat. Nos. 225-100 and 225-103, respectively).
Replacement cassette adapters are available, allowing the user to adapt whichever model they are using to another cassette size.

Disassemble a three-piece cassette and set aside inlet section (usually marked “inlet”). Keep inlet section for closing the cassette after sampling.
Select a ﬁlter and support pad as speciﬁed in the sampling method. Place support pad into cassette outlet and place ﬁlter on top of support pad. Insert cassette ring (middle) section into cassette outlet. Ensure a ﬁrm seal.
Hold cyclone upside down (cassette adapter facing downward). Insert cassette adapter into cassette middle ring section. Press until a ﬁrm seal is established.
Ensure thumbscrew on cyclone is secure and that the grit pot remains on the cyclone body during calibration and sampling.

Inserting Cyclone/Cassette Assembly in Cassette Holder (Figure 2)

Insert the cyclone body through the large opening of the cassette holder.
Ensure the cyclone/cassette assembly is seated ﬁrmly in the holder by inserting the small round nodule on the rim of the bowl adapter into the notch in the cassette holder.
Remove the plug from the cassette outlet.
Secure the cyclone/cassette assembly in the holder by stretching the spring-loaded hold-down plate over the cassette outlet.
Insert the holder’s Leer adapter (located on the end of the spring-supported rubber tubing) into the cassette outlet.

SKC GS-3 Conductive Plastic Respirable Dust Cyclone -
Description1

Operation

Calibration

Prepare a cyclone/cassette assembly (Figure 1). Ensure grit pot remains on cyclone body during calibration.
SKC recommends using the smallest calibration jar possible. To achieve this, do NOT use Cassette Holder Cat. No. 225-1 during calibration.
Place cyclone/cassette assembly into an airtight calibration jar that contains an inlet and outlet (Cat. No. 225-111, Figure 3).
Using ﬂexible tubing, connect outlet of calibrator to inlet of calibration jar.
Run tubing from outlet of cyclone/cassette assembly through the outlet of the calibration jar and to the inlet of a sample pump. If using the Calibration Jar (Cat. No. 225-111), connect the Leer adapter inside the jar lid to the cassette outlet. Connect jar outlet tubing to the sample pump inlet.
Turn on pump and calibrate to desired ﬂ ow rate following directions in the pump and calibrator operating instructions.
Flow rate:
• 2.75 L/min for a 4-μm cut-point*

Calibrated at UK Health and Safety Laboratories. See the collection efficiency curve at www.skcinc.com/products/gs-3-conductive-plastic-respirable-dust-cyclone-37-mm. 6. After calibration, disassemble calibration jar, remove cyclone/cassette assembly, and replace cassette used for calibration with a fresh (unused) cassette to be used for sampling.

Sampling

Ensure the ﬂow rate has been set properly (see Calibration).
Leave grit pot in place during calibration and sampling.
Ensure a fresh cassette has been installed on the cyclone and the cyclone/cassette assembly has been inserted into the cassette holder (see Inserting Cyclone/Cassette Assembly in Cassette Holder).
Connect the Tigon tubing attached to the cassette holder to the inlet of a constant ﬂ ow personal sampling pump.
Clip the holder with the cyclone/cassette assembly onto a worker’s collar or pocket as close to the breathing zone as possible.
Clip the pump onto the worker’s belt or place it in a protective pouch. Start the pump and record pertinent details.
At the end of the sampling period, stop the pump and record pertinent details.
Remove the cyclone/cassette assembly from the cassette holder and immediately cap cassette outlet.
Separate cassette from cyclone. Immediately replace the inlet section of the cassette, and cap inlet with provided plug.
Package cassette and send it with all data to a laboratory for analysis.
Discard particles that were collected in the cyclone’s grit pot.

Maintenance

Cleaning
After sampling, clean all parts of the cyclone, including the interior of the grit pot, with mild soapy water. The cyclone can be wiped with a clean dust- free tissue, air dried, blown dry, or wiped with isopropyl alcohol.
Do not use strong solvents to clean the cyclone.p

References

Gautam, M. and Sreenath, A., “Performance of a Respirable Multi-Inlet Cyclone Sampler,” J. Aerosol
Sci., Vol. 28. No. 7, pp. 1265-1281, 1997, http://doi.org/fhsgrz
Trakumas, S., et al., Performance Assessment of Personal Respirable Cyclone Samplers,
AIHce Presentation 191, 2003, https://bit.ly/3GqxJ1C (PowerPoint presentation)
OSHA Final Rule on Respirable Crystalline Silica, www.osha.gov/silica/

Accessories/Replacement Parts

Description	Cat. No.

Replacement Cassette Adapter
25 mm
37 mm| 225-101
225-102
Replacement Bowl Adapter| 225-108
Replacement Grit Pots, pk/25| P225012
Filter Cassette/Cyclone Holder for standard 25 or 37-mm
3-piece cassettes with or without a cyclone| 225-1
Standard-size Multi-purpose Calibration Jar| 225-111

SKC Limited Warranty and Return Policy

SKC products are subject to the SKC Limited Warranty and Return Policy, which provides SKC’s sole liability and the buyer’s exclusive remedy. To view the complete SKC Limited Warranty and Return Policy, go to skcinc.com/warranty.

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