User guide

ManualsBrandsSKC ManualsHardware225-317 SKC Diesel Particulate Matter (DPM) FIlter Cassette

DPM Cassette with Impactor

Catalog No. 225-317

863 Valley View Road, Eighty Four, PA 15330 USA

Tel: 724-941-9701 Fax: 724-941-1369 email: skctech@skcinc.com

www.skcinc.com

SKC Diesel Particulate Matter Cassettes are

designed for sampling in atmospheres where

it is necessary to separate DPM from other

respirable dust (such as coal dust). Single-use

SKC DPM Cassettes are tamper-evident sealed

to ensure sample integrity. Each streamlined

plastic cassette comprises an impactor

with precision sapphire orifice, impaction

substrate, and two heat-treated quartz filters.

The impactor screens out respirable particles

≥ 1.0 μm. Particles less than 1.0 μm are collected

on the filter. Samples are analyzed for organic

and elemental carbon content using a highly

sensitive Evolved Gas Analysis (EGA) technique

with thermal-optical analyzer as specified in

NIOSH 5040.

Performance Proﬁ le

Casse e Size: 37 mm

Filter: Two heat-treated quartz ﬁ ber

with cellulose support pad

Filter Collection

Area: 8.04 cm

Impactor: Four-nozzle, precision sapphire oriﬁ ces

Flow Rate: Calibrated at 1.7 and 2.0 L/min for sampling of sub-micron

particles

Analysis: For organic and elemental carbon using evolved gas analysis

(EGA) with thermal-optical analyzer (NIOSH Method 5040)

Sampling Equipment

The SKC DPM Casse e is designed for use with an appropriate sample pump and cyclone

that pre-selects non-respirable particles*. An SKC Universal XR, AirChek

2000, or AirChek

XR5000 sample pump can provide the speciﬁ ed ﬂ ow rate. Use the SKC Casse e/Cyclone

Holder (Cat. No. 225-1) to secure the casse e when used with the GS-1 Cyclone.

* A cyclone is not necessary in all sampling situations. It should be used in se ings where larger particulate is likely to clog

the impactor.

Inlet

Heat-treated

quartz ﬁ lter

Outlet

Figure 1. Exploded view of

DPM Cassette

(Cat. No. 225-317)

Cassette

body

Operating Instructions

Plug

Support

pad

Heat-treated

quartz ﬁ lter

Stainless steel ring

(deﬁ nes ﬁ lter area)

Impactor

assembly

Summary of content (4 pages)

PAGE 1
Operating Instructions 863 Valley View Road, Eighty Four, PA 15330 USA Tel: 724-941-9701 Fax: 724-941-1369 email: skctech@skcinc.com www.skcinc.com DPM Cassette with Impactor Catalog No. 225-317 Plug SKC Diesel Particulate Matter Cassettes are designed for sampling in atmospheres where it is necessary to separate DPM from other respirable dust (such as coal dust). Single-use SKC DPM Cassettes are tamper-evident sealed to ensure sample integrity.
PAGE 2
Setting Up the Sampling Train with Cyclone and Holder 1. Insert stem of GS-1 Cyclone into large hole in cassette holder. 2. Orient cyclone in holder until the small round nodule on the bowl adapter rim fits into the notch in the cassette holder. 3. Remove inlet and outlet plugs from a DPM Cassette, pull back spring-loaded hold-down plate on cassette holder, and gently push inlet of cassette onto top of cyclone. 4. Position small hole in hold-down plate over cassette outlet. 5.
PAGE 3
Calibration Option 1: Using a Calibration Jar (Figure 3) 1. Prepare a DPM Cassette or cyclone/DPM Cassette assembly. If using a cyclone, 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 DPM Cassette or cyclone/DPM Cassette assembly into an airtight calibration jar that contains an inlet and outlet (SKC Cat. No. 225111, see Figure 3). 3.
PAGE 4
Sampling 1. Ensure pump is calibrated to the appropriate flow rate (see Calibration). 2. Turn on pump and sample for the appropriate time. 3. When sampling is completed, turn oﬀ the pump, remove the DPM Cassette or cyclone/DPM Cassette assembly from the holder, remove the cassette from the cyclone, and immediately plug both the inlet and outlet of the cassette with the provided plugs. Shipping Package the cassettes for shipment to a laboratory for analysis.