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Operating Instructions
Tel: 724-941-9701 Fax: 724-941-1369 e-mail: skctech@skcinc.com
GS-1 Single-inlet Cyclone
Cat. No. 225-105
Description
The GS-1 Cyclone is a 10-mm, lightweight, single-inlet, conductive plastic
cyclone designed for use with either a Diesel Particulate Ma er (DPM) Casse e
or a standard 37-mm 3-piece fi lter casse e (25 mm with adapter accessory). This
cyclone can be used with the SKC Filter Casse e Holder (Cat. No. 225-1) for personal
sampling in the breathing zone.
Performance Profi le
Media: 37-mm 3-piece casse e with fi lter (25-mm with adapter
accessory) or DPM Casse e
Flow Rate: • 2.0 L/min for 4.0 μm 50% cut-point (see Reference)
• 3.0 L/min for 3.5 μm 50% cut-point*
• 1.7 or 2.0 L/min for sampling with DPM Casse e
Tubing: 1/4-inch ID
* Determined using experimental data obtained at fl ows from 2.0 to 4.0 L/min.
863 Valley View Road, Eighty Four, PA 15330 USA
Assembly with Standard 37 or 25-mm
3-piece Cassette (Figure 1)
The GS-1 Cyclone is supplied fully assembled
with bowl adapter and 37-mm casse e adapter. A
25-mm casse e adapter is sold separately as Cat.
No. 225-101.
1. Determine casse e diameter to be used with
cyclone.
a. If using a 37-mm casse e, proceed to Step 2.
b. If using a 25-mm casse e, remove 37-mm
casse e adapter assembled on cyclone (pull
it off the top of the cyclone) and replace
with the 25-mm casse e adapter accessory
(align with cyclone top and press on until
fi rmly seated).
2. Disassemble a three-piece casse e and set
aside the inlet section (usually marked “inlet”).
Keep the inlet section for closing the casse e
a er sampling.
3. Select a fi lter and support pad as specifi ed in
the sampling method. Place support pad into
casse e outlet section and place fi lter on top
of support pad. Insert casse e ring (middle)
section into casse e outlet section. Ensure a
fi rm seal.
Plug
Cassette outlet
Support pad
Filter
Cassette ring (middle)
Cassette adapter
(37 mm, supplied
assembled with
cyclone body)
Nodule for holder
Bowl adapter
Retaining tab
Cyclone top
(supplied assembled
with cyclone body)
Thumbscrew
Cyclone body
Grit pot
GS-1 Cyclone with standard 37-mm
cassette installed - exploded view
Figure 1
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4. Hold cyclone upside down (casse e adapter facing downward). Insert casse e
adapter into casse e middle ring section. Press until a fi rm seal is established.
5. Ensure thumbscrew on cyclone is secure and that the grit pot remains on the
cyclone body during sampling.
Assembly with Diesel Particulate
Matter (DPM) Cassette (Figure 2)
The GS-1 Cyclone is supplied fully
assembled with bowl adapter and 37-mm
casse e adapter.
1.
Remove casse e adapter from cyclone.
2. Remove inlet plug from DPM Casse e
and gently push casse e inlet on top
of cyclone until seated fi rmly.
For secure sampling, use
DPM Cassette/GS-1 Cyclone
assembly with SKC Cassette
Holder (Cat. No. 225-1) during
sampling. See DPM Cassette
Operating Instructions.
Leave grit pot in place during
calibration and sampling.
GS-1 Cyclone with cassette adapter removed
and preloaded DPM fi lter cassette installed -
DPM preloaded fi lter cassette
Nodule for holder
Bowl adapter (supplied
assembled with cyclone body)
Retaining tab
Cyclone top
(supplied assembled
with cyclone body)
Thumbscrew
Cyclone body
Grit pot
Figure 2
exploded view
Calibration
Flow rate: • 2.0 L/min for 4.0 μm 50% cut-point (see Reference)
• 3.0 L/min for 3.5 μm 50% cut-point*
• 1.7 or 2.0 L/min for removing large particles when sampling
with the DPM Casse e (fl ow rates used by MSHA)
* Determined using experimental data obtained at fl ows from 2.0 to 4.0 L/min.
Option 1: Using a Calibration Jar
1. Prepare a cyclone/casse e assembly (see Figures 1 and 2). 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 225-1 during calibration.
2. Place cyclone/casse e assembly into an airtight calibration jar that contains an
inlet and outlet (SKC Cat. No. 225-111; see Figure 3).
3. Using fl exible tubing, connect inlet of calibrator to inlet of calibration jar.
4. Run tubing from outlet of cyclone/casse e assembly through outlet of
calibration jar and to the inlet of a sample pump. If using the SKC 225-111 jar,
connect the Luer adapter inside the jar to the cyclone/casse e outlet. Connect
jar outlet to inlet of a sample pump.
5. Turn on pump and calibrate to desired fl ow rate following directions in the
pump and calibrator operating instructions.
6. A er calibration, disassemble calibration jar, remove cyclone/casse e
assembly, and replace casse e used for calibration with a fresh (unused)
casse e to be used for sampling.
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Inlet
Outlet
Multi-purpose Calibration Jar
(Cat. No. 225-111)
Inlet
Calibrator
GS-1 Cyclone/cassette assembly in calibration jar
GS-1 Cyclone/cassette assembly
(inside 225-111 calibration jar)
Figure 3
Sample pump
Option 2: Jarless Calibration - Figure 4
This calibration option is recommended when using a Defender primary standard
calibrator to calibrate personal air sample pumps for size-selective particulate sampling
using particulate samplers that do not have their own calibration adapters.
1. Use a length of fl exible tubing to a ach the inlet of the sample pump to the
suction port of a Defender calibrator.
2. Use the shortest length of tubing possible to a ach the outlet of the casse e in
a cyclone/casse e assembly to the pressure port of the Defender.
3. Set the Defender to take at least 20 fl ow measurements in order to average out
the fl ow variations caused by direct connection of the pump to the calibrator.
See calibrator operating instructions for details.
Jarless calibration with cyclone/cassette assembly and AirChek XR5000 pump
Figure 4
Sampling
Check the sampling method being used for fl ow rate and sampling media
requirements.
1. Calibrate pump to desired fl ow rate using representative sampling media (see
Calibration).
Leave grit pot in place during calibration and sampling.
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2. Ensure fresh casse e has been installed on the cyclone and the cyclone/
casse e assembly has been inserted into the casse e holder (see holder
instructions).
3. Using the fl exible tubing a ached to the casse e holder, connect the holder
containing the cyclone/casse e assembly to the inlet of the calibrated sample
pump.
4. Clip holder near the breathing zone and clip pump to the worker’s belt.
5. Start pump and record pertinent details.
6. Sample for the time specifi ed in the method.
7. Turn off pump when sampling is complete and record pertinent details.
8.
Remove cyclone/casse e assembly from holder and immediately cap cas-
se e outlet.
9. Separate casse e from cyclone and immediately cap casse e inlet (if
using a standard casse e, replace the inlet section of the casse e, then cap
the inlet with the plug provided).
10. Discard particles that collected in the cyclone’s grit pot.
11. Package casse e and send it with all data to a laboratory for analysis.
Cleaning
A er 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.
Reference
Trakumas, S., et. al., Performance Assessment of Personal Respirable Cyclone Samplers, AIHce
Presentation 191, 2003
Ordering Information
Description Cat. No.
GS-1 Single-inlet Cyclone includes bowl adapter,
37-mm cassette adapter, and grit pot 225-105
Filter Cassette/Cyclone Holder, for attaching a DPM or standard fi lter
cassette to a worker’s clothing in the breathing zone. May be used with or
without a cyclone, required when using DPM Cassette with GS-1 Cyclone 225-1
Replacement Cassette Adapters
25-mm cassettes
37-mm cassettes (supplied with cyclone)
Replacement Bowl Adapter 225-108
Replacement Grit Pots, pk/25 P225012
Multi-purpose Calibration Jar 225-111
225-101
225-102
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 h p://www.skcinc.com/warranty.
asp.
Form 37098 Rev 1401
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