GS Series Respirable Dust Cyclones
GS-3 Cyclone
|
Meets ACGIH/ISO/CEN respirable curve
- 4.0-µm 50% cut-point at a 2.75 L/min flow rate*
- 3.5-µm 50% cut-point at a 3.7 L/min flow rate† for
alternate applications
Eliminates adverse electrostatic effects
Tangential inlet design decreases particle losses due to impaction
Eliminates ambient wind speed and orientation effects
Overcomes bias of Dorr-Oliver Cyclone
Conductive plastic is safe for underground mine use
|
| Sample Time: |
Varies
|
| Sampling Rate: |
2.75 L/min for
4.0-µm 50% cut-point*
3.0 L/min†
|
| Sample Pump: |
Universal or AirChek
|
| Sample Media: |
25 or 37-mm filters
|
* Calibrated
at U. K. Health and Safety Laboratory.
Call SKC for a copy of the collection efficiency curve.
† Determined
using experimental data obtained at flows from 2.0 to 4.0
L/min |
|
GS-3
Multiple-inlet Cyclone Operating Instructions (PDF)
GS
Cyclones Spec. Sheet (PDF)
Cyclone FAQs
|
The Multiple-inlet GS-3 Cyclone
The GS-3 Cyclone is a 10-mm lightweight conductive plastic unit used with
a standard 3-piece cassette with filter for the collection of respirable
dust particles. The GS-3 Cyclone's removable cassette adapter securely
holds the filter cassette in place during sampling. Designed to meet
the ACGIH/ISO/CEN respirable curve, the GS-3 Cyclone has a 50% cut-point
of
4.0 µm (bias within ISO/NIOSH requirements) at 2.75 L/min* and
3.5 µm
at 3.7 L/min† for
alternate applications.
* Calibrated at U.
K. Health and Safety Laboratory and University of Minnesota (wind
tunnel). Call SKC for a copy of the collection efficiency curve.
† Determined
using experimental data obtained at flows from 2.0 to 4.0 L/min
Designed to meet the ACGIH/ISO/CEN respirable curve,
the GS-3 Cyclone has a 50% cut-point of 4.0 µm
(bias within ISO/NIOSH requirements) at 2.75 L/min.
GS-3 Cyclone Superior Performance
With low mean bias and higher flow rate requirements, the GS-3 Cyclone
provides better sampling accuracy when compared to the performance of other
cyclones used for respirable dust collection. Furthermore, the multiple-inlet
GS-3 Cyclone overcomes sampling problems that have been reported with the
single-inlet Dorr-Oliver Cyclone.
GS-3 Cyclone's Unique Design
 |
- Conductive plastic construction
- Eliminates static collection problems with charged particles
- Safe for underground mine use
- Tangential inlets lessen sampling errors
that can occur when particles impact on the wall of the cyclone
opposite the inlet.
- Multiple inlets eliminate sensitivity
to wind velocity and user orientation to the contaminant
source.
|
 |
Exploded View of GS-3 Cyclone with Cassette
and Filter
|
The GS-1 Single-inlet Cyclone
GS-1 Cyclone
|
Conductive plastic construction
- Eliminates electrostatic effects found with non-conductive
nylon Dorr-Oliver cyclone
Ideal for use with the SKC DPM Cassette
Meets ACGIH/ISO/CEN respirable curve
- 4.0-µm 50% cut-point at 2.0 L/min*
- 3.5-µm 50% cut-point at 3.0 L/min† for
alternate applications
|
| Sample Time: |
Varies
|
| Sampling Rate: |
2.0 L/min for 4.0-µm cut-point*
3.0 L/min for
3.5-µm cut-point†
1.7 L/min or 2.0 for < 1.0-µm cut-point (DPM)
|
| Sample Pump: |
Universal or AirChek
|
| Sample Media: |
25 or
37-mm filters or SKC DPM Cassette
|
* See
reference list.
† Determined
using experimental data obtained at flows from 2.0 to 4.0 L/min |
|
For more information, contact SKC
Technical Support
GS-1
Single-inlet Cyclone Operating Instructions (PDF)
GS
Cyclones Spec. Sheet (PDF) |
GS-1 Cyclone
The GS-1 Cyclone, a single-inlet version of the GS-3 Cyclone, provides
performance equivalent to the Dorr-Oliver Cyclone, but has the
added advantage of being constructed of conductive plastic. This
material
eliminates the electrostatic effects experienced when using the
nonconductive nylon Dorr-Oliver Cyclone. The GS-1 Cyclone is ideal
for use with
the SKC Diesel Particulate Matter (DPM) Cassette and for any other
respirable dust applications at a flow rate of 2.0 L/min (4.0-µm
cut-point) or 3.0 L/min (3.5-µm
cut-point†).
GS-1
Cyclone Versatility
The GS-1 Cyclone may be operated at different
flow rates for sharp particle size selection that meets your
application.
Flow Rate
(L/min) |
Cut-point
(µm) |
Application |
| 2.0 |
4.0 |
ACGIH/ISO/CEN Respirable convention |
| 3.0 |
3.5 |
Alternate applications |
| 1.7 or 2.0 |
< 1.0 |
Sampling with DPM Cassette |
Using the GS-1 Cyclone with the SKC DPM Cassette
The SKC DPM Cassette with built-in precision-jeweled impactor is
designed for sampling in atmospheres where it is necessary to
differentiate diesel particulate matter from other respirable dust
(such as coal
dust) based on particle size. The built-in impactor screens out
respirable particles > 1.0 µm; particles less
than 1.0 µm
collect on the heat-treated quartz filter. The GS-1 Cyclone is
used with the DPM Cassette to prevent the impactor from clogging
in
atmospheres where larger particles (> 4 µm) may be present
as indicated in NIOSH Method 5040.
GS-1 Cyclone Assembly with
DPM (Diesel Particulate Matter) Cassette
Multi-purpose Calibration Jar
|
The SKC Multi-purpose Calibration Jar provides
convenient calibration when using a GS Cyclone, PUF tube, or
OVS tube. Instead of packaging four or five
different calibration adapters for the field, pack only one Multi-purpose
Calibration Jar. The rugged 32-oz polypropylene jar contains
a quick screw cap and barbed fitting for easy use.
Multi-purpose Calibration Jar
Cat. No.....................225-111
Note: GS cyclones should not be calibrated inside
the Calibration Jar without the filter cassette/cyclone
holder. |
 |
 |
The SKC lightweight Filter Cassette/Cyclone
Holder (225-1) enables a GS-3 Cyclone with three-piece
cassette
(inlet section removed) and filter to be attached to a worker’s
collar, close to the breathing zone, for true respirable
dust sampling.
The SKC Filter Cassette/Cyclone
Holder is required when using the GS-1 Cyclone with the DPM
Cassette. Figure at right shows GS-3 Cyclone sampling train with
SKC filter cassette holder and AirChek 2000 sampler.
|
 |
| |
The SKC Multi-purpose Calibration
Jar (225-111) provides easy calibration when using a GS Cyclone.
|
Ordering Information Online
Ordering
| Description |
Size |
Cat. No. |
| GS-3 Multi-inlet Cyclone with
bowl adapter and cassette adapter |
37 mm |
225-100 |
| 25 mm |
225-103 |
GS-1 Single-inlet Cyclone includes bowl adapter
and 37-mm cassette adapter |
225-105 |
| Accessories |
Size |
Cat. No. |
Replacement Cassette Adapter for GS-3 Cyclone |
37 mm |
225-102 |
| 25 mm |
225-101 |
Three-piece Filter Cassette Blanks |
37 mm |
225-3LF |
| 25 mm |
225-3-25LF |
| Filter Cassette/Cyclone Holder, for attaching
a DPM or standard
filter cassette to a worker's clothing in the breathing zone Required
when using the GS-1 Cyclone with the DPM Cassette |
225-1 |
| Multi-purpose Calibration Jar |
225-111 |
| Replacement Grit Pot, pk/25 |
P225012 |
GS-3
Multiple-inlet Cyclone Operating Instructions (PDF)
GS-1
Single-inlet Cyclone Operating Instructions (PDF)
GS
Cyclones Spec. Sheet (PDF)
Cyclone FAQs
References
Kar, K and Gautam, M., "Orientation Bias of the Isolated 10 mm Nylon Cyclone
at Low Stream Velocity," AIHA Journal, Vol. 56 (1995), pp. 1090-1098.
Gautam, M. and Sreenath, A., "Performance of a Respirable Multi-inlet Cyclone," Journal
of Aerosol Science (U.K.), Vol. 28, No. 7 (1997), pp. 1265-1281.
Trakumas, S., et. al., Performance Assessment of Personal Respirable
Cyclone Samplers, AIHce Presentation 191, 2003
Contact SKC Technical Support for
reprints.
This page was last modified May 2, 2008
