UNITY–Air Server-xr with Electronic Carrier Control (ECC) ........... 12 3.2.3 UNITY–Air Server-xr without Electronic Carrier Control (ECC) / T’d option ....13 3.2.4 Cable connections ......................14 Installing the Transfer Line ......................14 Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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UNITY–Air Server-xr Electronic Gas Control with the Thermo 1300 Series GC ......44 6.5.1 Installing the Markes TD to the Thermo Scientific TRACE Series 1300 GC ....44 Testing the ECC setup ........................47 Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
If the equipment is not used in a way specified by Markes International, the safety protection provided by the equipment may be reduced. Furthermore, system failures arising from such use may not be covered in standard warranty and/or service contract agreements.
Throughout this manual symbols will appear where carrying out an operation may involve hazards. Symbols and warnings also appear on the instrument, and these should be adhered to at all times. Markes International can accept no liability for failure to do so. BURN HAZARD A hot surface may result in a burn injury.
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.
50/60 Hz Input inrush current (A): <40 A (cold start) Technical support contact details In the first instance please contact your distributor. If they are unable to resolve your query, please contact Markes International (details below). Website: www.markes.com E-Mail: support@markes.com...
GC configuration comprises 25-30 m, 0.25mm or 0.32 mm ID, 1 or 2 µm phase thickness bonded methyl silicone capillary column with a FID or mass spectrometer detector. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Air Server-xr in addition to that controlling the general laboratory line pressure. Any conventional pressure regulator should suffice for this and suitable pneumatic control may already be available on your GC. Alternatively, Markes International Ltd. supply a pneumatic control accessory (P/N U-GAS01) for both air and carrier gas.
Deoxo and organic filters should be included in the carrier gas line just upstream of connection to the UNITY–Air Server-xr - GC analytical system (see Accessories for Thermal Desorption catalogue). Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com...
NOTE: If ECC is not available/required please refer to section 3.2.3 to de-configure ECC on UNITY–Air Server-xr. UNITY-xr Pressure Septum Outlet Purge Carrier Carrier Inlet See Section 6 for the relevant configuration for each major GC Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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 get stable behaviour. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com...
4. Fit the GC end of the UNITY-xr transfer line through the hole in the washer and on through the hole in the GC oven wall. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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2. As the entry hole will generally be larger than the diameter of the metal line sleeve, one or more of the large washers supplied will be needed. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com...
~20cm fused silica is exposed at either end Connect the fused silica transfer line to the GC column with a press-fit (C-QSC10) or alternative connector. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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1/2 turn using one of the 8 mm wrenches (spanners) provided in the shipping kit. Do not over tighten or the ferrule will become distorted. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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The shield tube should be positioned such that the 1/16 side tubing projects though one of the cutouts. Secure the transfer line to UNITY-xr using four M4 nuts. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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3. Remove the trap alignment tool 1-2 mm past o-ring NEVER SWITCH UNITY-xr ON WITH THE TRAP ALIGNMENT TOOL INSTALLED Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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Ensure good alignment here when re-installing Keep hold of the pneumatics while re-tightening the pneumatics the thumbscrew firmly. Refit the internal black cover. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Air Server-xr. 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 air stream. The selectivity of the dryer is, sometimes, an advantage, for example when monitoring multiple trace level hydrocarbons in real-time in ambient air using GC and FID.
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Nafion dryer will damage the membrane. membrane and cause leaks – damage caused by ignoring this warning will not be covered by warranty Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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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. Adjust flow here Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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 does not drop quickly. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Highlight UNITY-xr from the available options section, and then click the right arrow to move the selection into the current configuration section. The list of available options will then update and allow the configuration of the Air Server-xr in the same way. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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MFC using Address 1 and select split and for the MFC using Address 2 select trap. Select the appropriate carrier gas, e.g Helium, from those available in the carrier gas drop down box. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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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. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
If communications between the PC and UNITY–Air Server-xr are established successfully the instrument status will change to Idle. If for some reason, communication is not established the instrument status will remain as Offline. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Click the Method Editor tile on the MIC home screen, open the Template Methods folder in the top left corner and choose the ‘TD-Trap Heat’ method to modify. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com...
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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 into the sequence becomes irrelevant when running a tube conditioning method. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Right click on the Instrument status and select ‘System Info’. Create a copy of the calibration settings and record. Once all checks are complete, replace all covers. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Remove the 3 port EPC block assembly from the split/splitless EPC module. Fit the replacement EPC block assembly, and route the 1/16” tubing through the rear panel of the GC and towards the UNITY–Air Server-xr. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
In addition the splitless purge time value must be set to 999.99 minutes directly through the keyboard of the GC (6890 firmware revision A.03.08 or later required). This value cannot be set using the Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com...
GC towards UNITY–Air Server-xr. The lengths of PEEK tubing used should be no longer than required to reach the UNITY–Air Server-xr. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Having completed this, the system should now be ready to use. 6.2.3 7890 Inlet Settings If the pressure is not correctly controlled after inputting the above settings then turn ‘Auto prep run’ to ‘On’. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Remove the filter from the carrier gas line and replace with the Shimadzu fitting GM-1.6L. The filter on the septum purge line should remain in place to prevent back diffusion of air/water. UNITY-xr Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Using the right arrow key, select “DIRECT” mode as shown, and press the “ENTER” key on the GC keypad. Setting Inlet Mode as Direct on Shimadzu GC Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Move the cursor to the “I Time” entry in the “Flow” column. Change the value from “1” to “4” then press the “Enter” key. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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 view>options from the drop down menus to open the options dialogue box. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
The only other important consideration is to ensure that the pressure of the carrier gas supplied to the DPFC module is only 10-15 psi greater than the pressure that the DPFC module is required to supply to UNITY–Air Server-xr. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
Connect the other end of the 1/16” tubing to the carrier gas inlet on the rear of the TD. The underside (outlet) of the S/SL injector in the GC oven should be fitted with a blanking ferrule or nut. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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GC methods. An overall schematic is shown below. Schematic of use of headspace adapter to supply carrier gas to the TD. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com...
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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. Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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.) Markes International Ltd T: +44 (0)1443 230935 F: +44 (0)1443 231531 E: enquiries@markes.com www.markes.com...
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