Cyclone Instructions
Contents
1. Operating Instructions 863 Valley View Road Eighty Four PA 15330 USA Tel 724 941 9701 e mail skctech skcinc com Aluminum Cyclone 25 mm Catalog No 225 01 01 37 mm Catalog No 225 01 02 The SKC Aluminum Cyclone The SKC Aluminum Cyclone is a lightweight respirable dust sampler that is used with a filter loaded into a three piece filter cassette The filter material pore size and the support pad must be selected as specified by the sampling method used The cyclone separates the dust particles according to size The respirable particles collect on a filter for analysis while larger particles fall into the grit pot and are discarded Flow rate 2 5 L min for ACGIH ISO CEN Convention nominal D 4 0 um 2 8 L min for alternate applications nominal D 3 5 um As previously published a flow rate of 2 6 L min will give a 4 um cut point however 2 5 L min will give a better match over the entire curve t Determined using experimental data obtained at flows from 2 0 to 4 0 L min Note The ACGIH ISO CEN Curve Soderholm Convention requires using the flow rate that minimizes the bias of the cyclone separation from the convention curve Operation Assembly i 1 Disassemble a three piece cassette and set l aside inlet section usually marked inlet Remove plug from cassette outlet Cassette Outlet Support Pad 2 Select a filter and support pad as specified in the sampling method Insert cassette ring middle sectio2. ar Clip __ 1 Ensure flow rate has been Filter Cassette F calibrated see Calibration Holder 9 Rubber Tubing oper of Warning Leave grit pot in place Adapter ty w during calibration and sampling Cyclone Filter Vs Cassette Assembly C 2 Connect the Tygon tubing attached to the filter cassette holder to the inlet of a sampling pump Tygon Tubing 3 Clip cyclone filter cassette assembly onto a worker s collar or pocket near the breathing zone Grit Pot 4 Start pump and record pertinent details Figure 3 5 At the end of the sampling period stop Cyclone with filter cassette in holder pump and record finish time Remove cyclone filter cassette assembly from cassette holder Separate cyclone from cassette Reassemble inlet section of cassette ensuring the inlet and outlet are sealed with plugs Send cassette and all data to a laboratory for analysis Note Particles collected in the grit pot do not represent any part of the respirable dust sample and should be discarded 6 Prior to further sampling clean all parts of the cyclone including the interior of the grit pot with mild soapy water The cyclone may be wiped with a clean dust free tissue air dried blown dry or wiped with isopropyl alcohol Accessories Catalog No Three piece Filter Cassette Blanks 25mm 225 3 25LF 37 mm 225 3LF Filter Cassette Holder 25 or 37 mm 225 1 Calibration Chamber 25 or 37 mm 225 01 03 For more information See SKC Technical No
3. n into cassette outlet see Figure 1 3 Insert cyclone into cassette ring and press firmly Leave grit pot in place during i calibration and sampling Filter Cassette Ring middle Cyclone 4 Insert cyclone cassette assembly through large opening of filter cassette holder see Figure 3 Ensure assembly is seated firmly in holder by inserting the cyclone s side pin small round nodule on rim of cyclone into the notch in the filter cassette holder Grnt Ror 5 Secure assembly in holder by stretching f the spring loaded hold down plate over the Figure 1 cassette Insert adapter located in end of Exploded view rubber tubing into cassette outlet or tne cyeloneMmer cassette assembly Calibration 1 Prepare a cyclone filter cassette assembly see Assembly Calibrate the cyclone with grit pot in place 2 Moisten O ring inside large end of calibration chamber Cat No 225 01 03 see Figure 2 and push chamber over cyclone stem until it fits snugly 3 Connect the Tygon tubing attached to the filter cassette holder to the inlet of a sampling pump Using flexible tubing connect the calibration chamber to a calibrator 4 Following instructions in the pump and calibrator manuals calibrate to Bis ia required flow rate see reverse side Chamber 5 Disconnect calibrator and replace filter used to set flow with a fresh weighed filter unused for sample collection Sampling Coll
4. te Publication 1519 at www skcine com Form 3803 Rev 0603
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