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Markes International UNITY-Air Server-xr, Руководство по установке

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QUI-1122 

Page 47 

Markes International Ltd 

T:

 +44 (0)1443 230935   

F:

 +44 (0)1443 231531   

E:

 [email protected] 

 

www.markes.com 

6.6

 

Testing the ECC setup 

Once the connections and inlet settings have been correctly set up it is extremely important that the 
following test of the ECC carrier gas supply is carried out:  

During the desorption of the UNITY–Air Server-xr cold trap the total flow and pressure supply of the ECC 
module should be monitored.  Both pressure and flow readings should be stable.   

If there is any variation in the pressure reading of the ECC module, or if the flow fluctuates by more 
3mL/min, this indicates that the setup is not optimized.  In such circumstances the reproducibility of 
analysis is likely to be poor. 

 

ECC instability during trap desorption 

Such fluctuations can normally be avoided by regulating the carrier gas supply to the ECC module to 10 
psi above the greatest pressure required by the UNITY-xr in the course of a run, see below.  This is almost 
always effective in removing any instability when using a constant pressure method, but may not be 
effective for constant flow methods. 

 

 

Correct Setup of ECC Supply 

In situations where the pressure and/or flow are unstable despite the appropriate regulation of the carrier 
gas supply there is an alternative configuration that should be employed. (Refer to section 3 for further 
information and installation instructions.) 

UNITY-xr 

GC 

EPC 

Carrier  

Septum Purge  

Carrier Supply to GC 

25 psi 

Total 

Flow 

Trap Desorption 

Standby 

Time 

30 

Inlet 
Pressure 15 psi 
Total Flow 30 ml/min 

Pressure Differential = 25 – 15 = 10psi     

Содержание UNITY-Air Server-xr

Страница 1: ...QUI 1122 Version 1 1 February 2017 Markes International Ltd T 44 0 1443 230935 F 44 0 1443 231531 E enquiries markes com www markes com Installation manual UNITY Air Server xr ...

Страница 2: ...inimum computer specification for UNITY Air Server xr control 8 2 2 GC equipment requirements 8 2 2 1 Access into the GC oven 8 2 2 2 GC configuration parameter selection 8 2 3 Laboratory location 9 2 3 1 Space requirements 9 2 3 2 Quality of the laboratory air 9 2 3 3 Quality of the laboratory gas lines 9 2 4 Services 9 2 4 1 Power 9 2 4 2 Pressure controlled supply of dry air or nitrogen purge g...

Страница 3: ...TY Air Server xr Electronic Gas Control instrument specific guides 35 6 1 UNITY Air Server xr Electronic Gas Control with the Agilent 6890GC 35 6 1 1 Procedure 35 6 1 2 6890 inlet settings 36 6 2 UNITY Air Server xr Electronic Gas Control with the Agilent 7890GC 37 6 2 1 Procedure 37 6 2 2 7890 Inlet Setup 38 6 2 3 7890 Inlet Settings 38 6 3 UNITY Air Server xr Electronic Gas Control with the Shim...

Страница 4: ...blishments or establishments directly connected to a low voltage power supply network that supplies buildings used for domestic purposes Where equipment is used in a field placement environment care must be taken to ensure that the instrument is not exposed to detrimental conditions i e rain wind or sun Exposure may diminish the performance cause damage to the instrument and or cause the equipment...

Страница 5: ... be covered under the standard warranties LIFTING HAZARD Injury may occur if proper lifting procedures are not followed WARNING General warning symbol to alert the user that personal injury or instrument damage may occur if the instrument is improperly used or if instructions are not followed correctly DISPOSAL This label indicates the instrument must not be disposed in regular waste but in accord...

Страница 6: ...e GC transfer line o Top and side covers especially directly above the heated valve See Section 3 for the location of these zones 1 4 4 Cleaning and decontamination Please consult Markes International or your local agent for information on decontamination or the use of cleaning agents NOTE Incorrect cleaning decontamination could result in damage to the instrument 1 5 Environment operating conditi...

Страница 7: ...Specifications 1 6 1 Physical properties Height 46 cm 18 1 Width 27 cm 10 6 Depth 54 cm 21 3 Weight 19 kg 42 lbs 1 6 2 Electrical properties Maximum Power 650 W Line voltage 100 240 V automatically selected Frequency 50 60 Hz Input inrush current A 40 A cold start 1 7 Technical support contact details In the first instance please contact your distributor If they are unable to resolve your query pl...

Страница 8: ...d on the GC 2 2 1 Access into the GC oven The heated transfer line is lined with 0 25 mm I D 0 35 mm O D uncoated deactivated fused silica which butt connects with the capillary analytical column inside your GC oven It is important that the heated and insulated portion of the transfer line extends as far as the skin of the GC oven such that the GC oven heating begins at the point where heating of ...

Страница 9: ...ssible to the analytical system i e such that the gas lines are as short as possible Use a high quality stainless steel diaphragm cylinder head regulator for the carrier gas supply 2 4 Services 2 4 1 Power Air Server xr is powered by the internal power supply of UNITY xr No extra power supply is required UNITY Air Server xr is automatically compatible with all conventional mains power supplies ran...

Страница 10: ...imum 2 psi impact on total system impedance Suitable pneumatic control for the carrier gas may already be available on your GC The performance of most common capillary columns is optimised at between 1 and 2 ml min typically requiring between 10 and 30 psi head pressure Previously approved and correctly rated external gas regulator should be used with this unit Maximum inlet pressure must not exce...

Страница 11: ...ing may irreversibly damage the equipment and invalidate the warranty It is recommended that two people unpack the instruments to minimise the lifting hazard Check the packing list included with the instrument to confirm the condition and completeness of ship kit and report any problems i e missing or damaged parts 3 2 Connections to UNITY Air Server xr The Air Server xr is attached directly to th...

Страница 12: ...e GC Carrier pressure should be set between 0 and 60psi depending on dimensions of the GC column installed The outlet for the carrier gas is then connected from the step down regulator to the ECC module that will be suppling carrier gas to the instrument 3 2 2 UNITY Air Server xr with Electronic Carrier Control ECC If using the UNITY Air Server xr with ECC then the carrier gas and septum purge lin...

Страница 13: ...shown below The third arm of the t piece should be connected via 1 16 30 1000 i d stainless tubing to the Carrier Inlet on the back of UNITY xr NOTE If stainless steel tubing is unavailable green PEEK tubing can be used in its place In this alternate configuration there is less need to regulate the carrier gas supply to the EPC module as close to the UNITY Air Server xr supply pressure in order to...

Страница 14: ...e line is 1 4 m long which is sufficient to reach most gas chromatographs even when a mass spectrometer is attached NOTE The parts supplied can be used in other combinations to suit particular instrument configurations 3 3 1 Installing the Transfer Line onto the GC There are two options for transfer line installation one requires use of a hole in the top side or back of the GC oven while the other...

Страница 15: ...UTD 1232 secure with the M6 nut supplied with the transfer Option 2 Through Heated Injector Port NOTE This option is only suitable if the inlet will not be required at any time 1 Remove components from the injector e g septum liner etc to enable the transfer line to pass through unobstructed 2 As the entry hole will generally be larger than the diameter of the metal line sleeve one or more of the ...

Страница 16: ...een fitted to the GC the fused silica plus associated PTFE sleeving SERUTE 5099 see shipping kit are pushed from the GC end along the 1 8 inch aluminium tube until they protrude from the other UNITY xr end of the transfer line Trim the PTFE sleeve to ensure enough fused silica is exposed Connect the fused silica transfer line to the GC column with a press fit C QSC10 or alternative connector 1 Pus...

Страница 17: ...er xr on the bench on the most convenient side of your gas chromatograph Ensure that the transfer line will reach from the top of UNITY Air Server xr to the selected entry point into the GC oven Ensure that UNITY xr is switched off and cool Remove the front top cover by pulling it vertically Remove the heated valve shield by removing the two screws shown and then pulling it forwards and upwards ...

Страница 18: ...lica from the PTFE line casing Cut off the first few mm of fused silica using an approved capillary cutting tool Make a mark 20 mm from the end of the fused silica using typing white out fluid or an alternative marker Gently feed the fused silica through the 1 16 nut and ferrule until the mark is reached Tighten the nut to trap the fused silica and then tighten a further 1 2 turn using one of the ...

Страница 19: ...m www markes com Carefully bring the clamp plate PTFE plate and shield tube down into the position with the shield tube covering the union nut The shield tube should be positioned such that the 1 16th side tubing projects though one of the cutouts Secure the transfer line to UNITY xr using four M4 nuts ...

Страница 20: ...fer line connectors highlighted into their respective sockets on the top deck of the instrument 3 4 Installing the cold trap Ensure that UNITY Air Server xr is switched off and cool Remove the top covers as described above if necessary Remove the internal black cover by removing the screws highlighted and carefully pulling it upwards ...

Страница 21: ... the screw pull the pneumatics up and off the brass guiding block and rotate to the right 1 Place the trap alignment tool into the cold trap box 2 The tool should pass smoothly up to the o ring in the heated valve before further gentle pressure moves the tool another 1 2 mm If the tool does not move smoothly past the point where it leaves the cold trap box there may be a misalignment problem 3 Rem...

Страница 22: ... Bring the pneumatic assembly back down onto the brass guiding block and relocate the screw in the slot Push the assembly gently back in the horizontal plane taking care to align the trap and stainless steel connector MISALIGNMENT CAN CAUSE THE END OF THE QUARTZ TRAP TO SNAP Apply gentle steady pressure to push the trap into the sealing O ring located inside the steel trap connector If the pneumat...

Страница 23: ... Server xr interface link SERASU 5068 into the split side of the heated valve as shown and fully lower the split tube cover to ensure a leak tight seal Connect the other end of the Air Server xr link tube to the 1 16 inch SAMPLE OUT union on the back of the Air Server xr NOTE If a dryer is to be fitted see Section 3 7 Replace the top covers of the UNITY xr Air Server xr interface link Split tube ...

Страница 24: ...cessory is only rated to 50 psig Standards or samples at pressures higher than this must be regulated to lower pressures using appropriate pneumatic controls before they are connected to an inlet on the Air Server xr 3 7 Configuring the dryer optional The Markes International dryer incorporates a semi permeable membrane which selectively eliminates water and polar organic compounds from a gas or a...

Страница 25: ...the Air Server xr SAMPLE OUT highlighted in green Plug in the 2 way molex connector into the socket highlighted in blue Connect the 1 16 stainless steel nut of the Air Server xr Link tube to the SAMPLE OUT point of the dryer Secure the 1 8 fitting with a 7 16 spanner while tightening CAUTION Rotating the 1 8 fitting on the Nafion dryer will damage the membrane and cause leaks damage caused by igno...

Страница 26: ... E enquiries markes com www markes com The dryer requires a pressure regulated supply 15 psi of around 200 ml min dry air or nitrogen The dry gas supply should be connected to the dryer where shown using the 1 8 copper tubing provided Attach dry air nitrogen here Adjust flow here ...

Страница 27: ...installed the carrier gas can be switched on 0 60psi depending on the GC column installed Check for any leaks using available total flow readouts or and by checking all connections with a helium detector Switch on the dry purge gas supply recommended line pressure is 50 60psi Check for any leaks by switching off the supply at the U GAS01 or step down regulator and checking that the pressure gauge ...

Страница 28: ...h the Air Server xr Any additional accessories added such as a nafion dryer to the UNITY Air Server xr combination will determine the system configuration and will need to be considered when configuring the software In addition there is the option of the UNITY Air Server xr being upgraded and combined with a 100 tube ULTRA xr autosampler or the inclusion of a Kori xr water management system 4 2 Ru...

Страница 29: ...r Ports NOTE the correct ports will depend on the PC setup and whether the supplied serial USB adapters are required The UNITY Air Server xr is shipped with two MFCs one MFC controls split and dry purge in tube desorption mode only and one is used to control the trap flow To set them and carrier gas options up click onto the Gas and Flows Tab Any MFC s detected will be shown along with their addre...

Страница 30: ...e GC Interface Tab and check that the default logic is set correctly Both GC start out and GC ready in should be as indicated on the labels attached to the GC cable Check the correct operation of the GC ready signal If the signal appears inverted i e software reports GC not ready when GC is ready then change the GC Ready In logic ...

Страница 31: ...ed 4 2 2 Detecting the UNITY Air Server xr Ensure that the all gas supplies to the system especially the dry air or nitrogen purge gas used for UNITY xr valve actuation and purging the cold trap box are on Having checked the above switch UNITY Air Server xr on using the switch located on the back panel of UNITY xr If communications between the PC and UNITY Air Server xr are established successfull...

Страница 32: ...rm the UNITY Air Server xr is leak tight Should the pressure fall then a leak checking procedure should commence using a helium leak detector to determine the source of the leak Resolve and re test Once the instrument is demonstrated to be leak tight the cold trap should be conditioned 5 2 Conditioning the cold trap CAUTION Do not exceed the cold trap temperature limits when conditioning the cold ...

Страница 33: ...cate If any of the default settings are changed the software will prompt you to save it with a new method name Click the Sequence tile on the MIC home screen and insert a blank sample using the Auto assign function to select the appropriate Trap conditioning method either the default method or a modified one if the conditions required are different from the default NOTE The tube number entered int...

Страница 34: ...using the parameters set out in documentation supplied with check standard QQR 0190 Using suitable GC MS parameters for the analysis of benzene toluene xylene camphene and di octyl phthalate run the check standard Assess the results comparing against the example chromatogram If the customer GC conditions prevent analysis of this standard e g the wrong GC column is installed or to check out on line...

Страница 35: ...d extended using 1 8 unions and green PEEK tubing in order to facilitate connection to UNITY Air Server xr NOTE When installing onto an existing 6890GC the firmware on the GC must be A 03 08 or later for A series or N 04 09 for N series To check the firmware version use the keyboard on the GC press Options Diagnostics Instrument Status and then scroll down to Version where you will see the version...

Страница 36: ...when connected to the 1 8 brass union NOTE two 1 8 brass unions 3 m of 1 16 green PEEK tubing and 1 8 graphitized vespel ferrules including one for 2 mm tubing are all contained within the Agilent GC Installation Kit Connect the carrier gas supply line to the Carrier Inlet port of UNITY Air Server xr and connect the septum purge line to the Pressure Outlet port 6 1 2 6890 inlet settings Before the...

Страница 37: ...een PEEK tubing in order to facilitate connection to UNITY Air Server xr 6 2 1 Procedure Remove the top rear cover on the GC to provide access to the EPC module that is going to be used to regulate the carrier gas supply to UNITY Air Server xr Remove the two hoodlum block assemblies for the carrier supply and septum purge lines from the split splitless EPC module Location of fixing screws for bulk...

Страница 38: ...to the Carrier Inlet port of UNITY Air Server xr and connect the septum purge line to the Pressure Outlet port 6 2 2 7890 Inlet Setup There are several settings that must be implemented on the 7890 whenever the split splitless EPC module is controlling the carrier gas supply to the UNITY xr thermal desorber In the Inlet settings the mode must be set to Splitless the purge time must be set to exact...

Страница 39: ...required are as follows Part no Description Quantity 221 35003 Shimadzu fitting GM 1 6L 1 221 35004 91 Shimadzu fitting GM 1 6L 1 228 16000 84 Ferrules 4 228 16002 84 Nuts 2 6 3 1 Gas connections between UNITY Air Server xr and the Shimadzu AFC The Shimadzu GC is fitted with two molecular sieve filters one in the carrier gas line and one in the septum purge line Remove the filter from the carrier ...

Страница 40: ...regulated upstream of the system in the supply line and it s pressure is monitored downstream of the system in the septum purge line 6 3 2 Configuring the Shimadzu GC software The inlet Split Mode on the Shimadzu GC must be set to Direct a To access the Split Mode press the FLOW key on the GC keypad NOTE In the case of GCs with two or more AFC units it may be necessary to press the FLOW key repeat...

Страница 41: ... commands for the PF keys Extending the PF commands h Select the purge command on PF3 and enter the desired value A flow rate of 2 5 ml min is recommended Setting the septum purge flow value 6 3 3 Flow stability AFC works with both impeded traps containing porous polymer e g Tenax and un impeded traps only containing carbon sorbents traps with no carrier gas instability generally noted even with 9...

Страница 42: ...rver xr and the GC are shown below The UNITY Air Server xr GC cable SERUTD 5095 has a 25 pin D type connector at the UNITY xr end and free wires at the GC end Four wires need to be inserted into the connection block at the rear of the QP2010 as shown below When connected to the Shimadzu GCMS system the UNITY Air Server xr ready in logic must be set to Open as shown below To set the logic select vi...

Страница 43: ... should be connected to the UNITY Air Server xr Carrier Inlet and the septum purge line should be connected to the Pressure Outlet Schematic of connections made between DPFC module and UNITY Air Server xr 6 4 2 Configuring the Thermo GC software Having completed the physical connection between the Thermo Focus or Trace GC and UNITY Air Server xr the next step is to configure the inlet settings The...

Страница 44: ...ote Changing split conditions on the TD or changing the trap hold time from one run to the next may change the relative retention times of early eluting compounds 6 5 1 Installing the Markes TD to the Thermo Scientific TRACE Series 1300 GC Carrier gas should be supplied via a GAS01 regulator or similar step down regulator to the inlet for the S SL module The carrier gas pressure should be supplied...

Страница 45: ...d attachment of 1 16 tubing from GC to TD This configuration provides simple forward pressure regulated carrier gas supply to the TD enabling constant pressure and constant flow carrier gas GC methods An overall schematic is shown below Schematic of use of headspace adapter to supply carrier gas to the TD 1 16 tubing connected to carrier gas inlet of TD ...

Страница 46: ...1 E enquiries markes com www markes com The GC inlet should be set up in the software in split mode with the split flow turned off to enable correct functioning of the S SL module as shown below Example GC S SL inlet configuration for S SL control of carrier gas supply to the TD ...

Страница 47: ...ity of analysis is likely to be poor ECC instability during trap desorption Such fluctuations can normally be avoided by regulating the carrier gas supply to the ECC module to 10 psi above the greatest pressure required by the UNITY xr in the course of a run see below This is almost always effective in removing any instability when using a constant pressure method but may not be effective for cons...

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