SKC GS-1 Single Inlet Conductive Plastic Cyclone Instruction Manual

SKC GS-1 Single Inlet Conductive Plastic Cyclone Instruction Manual

Introduction

Description

The GS-1 Cyclone is a 10-mm lightweight conductive plastic sampler with single inlet designed for use with either a Diesel Particulate Matter (DPM) Cassette or a standard three-piece 37-mm cassette and fi lter (25 mm with adapter accessory) for collecting respirable dust particles. The GS-1 Cyclone conforms to the ISO 7708/CEN criteria of a 4-μm 50% cut-point at 2 L/min with minimum bias (see References). The cyclone may be operated at 1.7 or 2 L/min to meet MSHA DPM sampling requirements or at 3 L/min for a 3.5-μm cut-point to meet the MSHA for silica standard. The GS-1 Cyclone is supplied with 37-mm cassette adapter, bowl adapter, and grit pot.

Required Equipment

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

Getting Started

Assembling Cyclone with Standard 37 or 25-mm 3-piece Cassette (Figure 1)

GS-1 Cyclone with standard 37-mm cassette installed – exploded view

The GS-1 Cyclone is supplied fully assembled with bowl adapter and 37-mm cassett e adapter. A 25-mm cassette adapter is sold separately as Cat. No. 225-101.

1. Determine casset e diameter to be used with cyclone.
   a. If using a 37-mm cassete, proceed to Step 2.
   b. If using a 25-mm cassette, remove 37-mm cassette adapter assembled on cyclone (pull it off the top of the cyclone) and replace with the 25-mm cassete adapter accessory (align with cyclone top and press on until firmly seated).

2. Disassemble a three-piece cassett  and set aside the inlet section (usually marked “inlet”). Keep the inlet section for closing the cassete after sampling.

3. Select a filter and support pad as specified in the sampling method. Place support pad into cassett e outlet section and place fi lter on top of support pad. Insert cassette ring (middle) section into cassette outlet section. Ensure a firm seal.

4. Hold cyclone upside down (cassette  adapter facing downward). Insert cassette adapter into cassette 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 calibration and sampling.

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

GS-1 Cyclone/cassette assembly in holder (Cat. No. 225-1)

Operation

Flow rate:

• 2 L/min for 4-μm 50% cut-point (see References)
• 3 L/min for a 3.5-μm cut-point (MSHA silica standard)
• 1.7 or 2 L/min for removing large particles when sampling with DPM Cassett e (MSHA DPM Sampling)

1. Prepare a cyclone/cassett e assembly (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 Cat. No. 225-1 during calibration.

2. Place cyclone/cassette assembly into an airtight calibration jar that contains an inlet and outlet (Cat. No. 225-111; Figure 3).

3. Using fl exible tubing, connect outlet of calibrator to inlet of calibration jar.

4. Run tubing from outlet of cyclone/cassett e 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 Luer adapter inside the jar lid to the cassett e outlet. Connect jar outlet tubing to the sample pump inlet.

5. Turn on pump and calibrate to desired fl ow rate following directions in the pump and calibrator operating instructions.

6. After calibration, disassemble calibration jar, remove cyclone/cassett e assembly, and replace cassett e used for calibration with a fresh (unused) cassett e to be used for sampling.
   
   GS-1 Cyclone/cassette assembly in calibration jar

Sampling

Check the sampling method being used for flow 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.

2. Ensure a fresh cassett e has been installed on the cyclone and the cyclone/cassett e assembly has been inserted into the cassett e holder. See Inserting Cyclone/Cassett e Assembly in Cassett e Holder.

3. Using the Tygon tubing att ached to the cassett e holder, connect the holder containing the cyclone/cassett 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/cassett e assembly from holder and immediately cap cassett e outlet.

9. Separate cassette from cyclone and immediately replace the inlet section of the cassett e. Cap the inlet with the provided plug.

10. Package cassett e 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.

References

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

Filter Cassette/Cyclone Holder , for DPM cassette or standard 25 or 37-mm 3-piece fi lter cassettes 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)

| 225-101
225-102
Replacement Bowl Adapter| 225-108
Replacement Grit Pots, pk/25| P225012
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.

References

• SKC, Inc. | Industrial Hygiene and Occupational Safety Products and Technology
• Warranty Information | Learn More About Industrial Hygiene & Occupational Safety Products at SKC, Inc.
• Silica, Crystalline - Overview | Occupational Safety and Health Administration
• bit.ly/3GqxJ1C

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