Adjustable Low Flow Tube Holder 224-26
Contents
1. ON A Set pump flow rate as directed in the pump operating instructions Connect the tubing from a calibrator to the exposed end of the tube in the first port Using a flat bladed screwdriver see note D below turn the flow adjustment screw needle valve on the first port clockwise to decrease flow or counterclockwise to increase flow until the desired flow rate is indicated on the calibrator Note For tri and quad models first rotate the anti tamper cover s to expose the flow adjustment screw s Reposition anti tamper covers Q when calibration is completed Repeat Steps 5 a and c for remaining active ports see Note B below Note Each port is controlled independently with its own flow adjustment screw needle valve Once flow is calibrated for each active port it is recommended practice to repeat steps 5 b through 5 d before removing representative tubes Remove the tube s used for calibration from the ports and replace with the tube s to be used for sampling Thread the appropriate protective tube cover s onto the threaded fitting s on the tube holder Use the collar clip to attach the holder to the worker s clothing near the breathing zone Sample for the desired time see Note H below 10 When sampling is complete reinstate the representative tube s used for calibration in Step 5 and perform a post sample calibration Special Notes A B It is good industrial hygiene practice to perf2. Operating Instructions 863 Valley View Road Eighty Four PA 15330 USA Tel 724 941 9701 Fax 724 941 1369 e mail skctech skcinc com Adjustable Low Flow Tube Holder The adjustable low flow tube holder is designed to be used for low flow applications from 5 to 500 ml min using sorbent sample tubes Port and tube holder rubber sleeve Single Dual 224 26 01 224 26 02 Threaded fitting fits all SKC protective tube covers 1 Flow adjustment screw needle valve 1 per port Outlet to pump Tygon tubing 6 Anti tamper cover tri and quad models only Collar clip tri and quad models only Operation For Single Dual Tri and Quad Models 1 Set the pump to the low flow mode see pump operating instructions low flow applications Top view of Tri and Quad 2 Attach Tygon tubing to the intake port on the pump 3 Determine the number of tubes needed for sampling ea gt Break tips off the representative tube s for pre sample 9 calibration Tri Quad 224 26 03 224 26 04 4 Insert the tube into the rubber sleeve of the first port with the arrow of the tube pointing toward the pump Repeat for desired number of ports Place an unopened tube in each unused port to seal it Operation continued 5 Calibrate the flow rate through each representative tube see Note A E F and G below a b c S
3. orm a pre and post sample calibration Changing the flow rate through any one port will not change the flow through the other ports appreciably It is recommended practice to perform a second calibration of all active ports under your unique sampling conditions prior to sampling see Steps 5 b through 5 d above Do not use the flow adjustment screw to shut off flow completely as valve seat damage may result Use an unopened tube to seal the port Do not use an oversize screwdriver as thread damage may result Do not calibrate several tube holders using only one pump Calibrate each tube holder with the same pump that will be used for sampling Calibrate before each sampling operation When using a multiple port tube holder set the pump for a flow rate that is gt 15 higher than the sum of the flow rates through all connected tubes See pump operating instructions for details If the pump enters flow fault 15 to 20 seconds after the adjustable flow tube holder is attached confirm that the pump has been set properly for low flow operation See pump operating instructions If you remove one tube from a multiple tube holder during the sampling period immediately replace it with an unopened tube for the remainder of the sampling period Need technical assistance Call SKC at 724 941 9701 or email skctech skcinc com SKC Limited Warranty and Return Policy SKC products are subject to the SKC Limited Warranty and Return Polic
4. y which provides SKC s sole liability and the buyer s exclusive remedy To view the complete SKC Limited Warranty and Return Policy go to http www skcinc com warranty asp Form 38041 Rev 1204
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