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ATIS

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OPERATION MANUAL

Adsorbent Tube Injector System

T702019A

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Summary of Contents for ATIS

Page 1: ...ATIS OPERATION MANUAL Adsorbent Tube Injector System T702019A 1 ...

Page 2: ...ds The purge trap module includes purge and trap glassware and a separate flow controller that allows the user to set a separate purge wet flow rate independently of the dry flow rate How the ATIS Works The ATIS is comprised of the following major components Injection Glassware Adsorbent Injector Heating Block Carrier Gas Flow Control Injection Glassware The sample pathway of the ATIS is construct...

Page 3: ...e cause the glassware to explode The pressure relief valve will open to relieve the gas pressure if it exceeds 6psig Warning Before performing any maintenance turn off the block heater unplug the electrical cord and allow sufficient time to let the block heater to cool down In addition to reading this manual please read the operating manual included with the TALBOYS Dry Block Heater follow the ins...

Page 4: ... Off Valve Pressure Relief 6 Polypropylene Tubing 1 8 OD 7 1 4 to 1 8 Reducing Union 8 Injection Glassware 9 1 4 Union with Thumbwheel 10 Heat Shield 11 Thermometer 12 Luer Hose Barb Adapter Spare Parts SP1 6mm Ferrules Black SP2 1 4 Ferrules Orange SP3 Half Hole Septa SP4 Spare Relief Valve and 3 16 Ferrules SP5 1 4 PTFE Ferrules White 4 ...

Page 5: ...as flow rate Assembling the ATIS To assemble the ATIS requires you to cut the supplied tubing to fit your workspace and to attach the tubing to the appropriate fittings We have installed the appropriate ferrules in each of the fittings for your convenience The fittings that connect to the ATIS glassware include a VESPEL ferrule Use caution when tightening the fittings to the glassware very little ...

Page 6: ...to it during use Connect the 1 4 to 1 8 reducing union to the injection glassware The SUPELCO Logo on the glassware should face you Using a wrench gently tighten the larger nut 1 8 of a turn past fingertight NOTE Over tightening will cause the glassware to break Cut a piece of the white polypropylene tubing to connect the outlet of the flow controller to the union you attached to the Injection Gla...

Page 7: ... The recess secures the union so you can attach your adsorbent tube by using only the thumbwheel The recess also promotes heat to transfer to the union This prevents the calibration standard sample from condensing inside the union Place the heat shield over the injector heater block so the septum holder protrudes through the hole of the heat shield The base of the heat shield will rest on the gray...

Page 8: ...l The transfer of heat will be greater with stainless steel than glass tubes Installing Thermal Desorption Tubes For 6mm OD tubes install a 6mm ferrule black in the thumbwheel For 1 4 OD tubes install a 1 4 ferrule orange in the thumbwheel Installing Solvent Desorption Tube Use the Luer Hose Barb Adapter and a piece of flexible tubing not supplied to connect odd size adsorbent tubes To attach the ...

Page 9: ... gas flow rate using the black knob of the flow controller To increase the flow rate turn the knob counter clockwise To decrease the flow rate turn the knob clockwise The flow controller has a 13 turn adjustment knob each complete turn of the knob is approximately 8 to 10mL min change in the flow rate The flow range of the flow controller is 0 to 110mL min at 25 30psig Caution Do not over tighten ...

Page 10: ...er to equilibrate to the desired temperature before injecting your standards You will also want to make sure you have gas flowing through your adsorbent tube prior to injecting your standard so the compounds will be carried to the tube Injecting Gas Phase Standards Gas phase standards are available in compressed gas cylinders made up in gas sampling bags or gas sampling bulbs Set the block tempera...

Page 11: ... samples are taken in humid atmospheres the adsorbent tube may retain some moisture Moisture retention is dependent on the type of adsorbent used In general it is best to remove this moisture prior to analysis The ATIS simplifies this task Make sure the injection glassware is clean prior to performing this task Set the block temperature to 50 C Set the flow rate of the carrier gas to 50mL min The ...

Page 12: ...e of a flower being placed into the extraction glassware In most extraction applications the block temperature is set to the desired temperature and the sample is placed in the glassware using a probe or tweezers Caution Be extremely careful when working with high temperatures Whether you choose to have the adsorbent tube attached to the thumbwheel before or after you place the sample in the extra...

Page 13: ...pressure of the adsorbent tube is greater than 6 psig the pressure relief valve will open thus all or most of flow will exit the relief valve The flow controller will not maintain the set flow rate Check that the gas delivery pressure is set at 25 30psig There is an extreme difference in the backpressure of the adsorbent tube you are using than with the one you used to calibrate the flow rate You ...

Page 14: ...experiment by raising the temperature of the injection block Compare the results In most cases you will not need to change the flow rate from 50mL min Q How can I determine if my adsorbent tube is dry Dry Purge A The best way is to weigh the adsorbent tube and record its tare weight prior to sampling Then after sampling reweigh the tube If the difference is greater than 2 milligrams you may want t...

Page 15: ...ng Flow Element Flow Controller IN Out Gas Purifier Orange 1 4 M 2 Vespel Ferrule Suggested operating pressure to 25 30psig Maximum operating pressure 60psig Regulator not included Half Hole Septa SS Reducing Union 1 4 to 1 8 Regulator SS Union 1 4 to 1 4 with Thumbwheel Relief Valve 15 ...

Page 16: ...Reducing Union 1 4 to 1 8 3 2 1 Orange 1 4 M 2 Vespel Ferrule SS Union 1 4 to 1 4 with Thumbwheel SS Union 1 4 to 1 4 with Thumbwheel SS Union 1 4 to 1 4 with Thumbwheel 1 Standard Injection Glassware Cat 28526 U 2 Extraction Glassware with Ground Joint Cat 28524 U 3 Extraction Glassware with Micro Connector Cat 28523 U Orange 1 4 M 2 Vespel Ferrule Orange 1 4 M 2 Vespel Ferrule 16 ...

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