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Agilent 7890

4 Using the control module

4.3.6 PCM

Fig 12: Method Setup - GC - Inlet

This tab governs the settings concerning the Pressure Control Modules
installed in the

Agilent 7890

chromatograph. According to configuration of

particular chromatograph, there can be several tabs, both with the similar
appearance.

Pneumatics

Turns on/off the pneumatic control of a particular channel.

Mode

Sets the working mode of PCM Channel A.

Pressure

Sets the initial pressure (available only in Pressure mode).

Total Flow

Sets the initial Flow (available only in Flow mode).

Postrun Pressure

Sets the postrun pressure (available only in Pressure mode).

Postrun Flow

Sets the postrun Flow (available only in Flow mode).

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Summary of Contents for Agilent 7890

Page 1: ...Controls Agilent 7890 GC ENG Code Rev M144 70B Date 1 10 2017 Phone 420 251 013 400 DataApex Ltd Fax 420 251 013 401 Petrzilkova 2583 13 clarity dataapex com 158 00 Prague 5 www dataapex com The Czech Republic ...

Page 2: ...demarks of DataApex Ltd Microsoft and WindowsTM are trademarks of Microsoft Corporation DataApex reserves the right to make changes to manuals without prior notice Updated manuals can be downloaded from www dataapex com Author MP ...

Page 3: ...Method Setup Autosampler 9 4 3 Method Setup GC 11 4 3 1 Oven Zones 11 4 3 2 Front Back Inlet 13 4 3 3 Column 15 4 3 4 Front Back Detector 17 4 3 5 Time Table 19 4 3 6 PCM 20 4 3 7 Gradients 22 4 4 Method Setup Acquisition 23 4 5 Method Setup Valves 25 4 6 Using Dual Injector 26 4 7 Device Monitor 27 4 8 Agilent 7890 Setup 28 4 8 1 Connection tab 28 4 8 2 GC tab 29 4 8 3 Signals tab 30 4 8 4 Sample...

Page 4: ... capitals indicates the name of the file and or directory ACTIVE capitalitalics marks the state of the station or its part The bold text is sometimes also used for important parts of the text and the name of the Clarity station Moreover some sections are written in format other than normal text These sections are formatted as follows Note Notifies the reader of relevant information Caution Warns t...

Page 5: ...autosamplers and for their control is always required to purchase AS Control Module p n A26 license Not all combinations of autosamplers and 7890 GCs are possible To find out if desired combination of autosampler and 7890 GC is available refer to following table Tab 1 Possible combinations of Agilent autosamplers and Agilent gas chromatographs Autosamplers 7673 A B II 7683 7693 6850 Chromatograph ...

Page 6: ...e is a Dual Injection mode support implemented for 7890 GCs In case of 7890 CGs Dual Injection hardware configuration is described in the section Sampler tab on pg 31 because the autosampler control is implemented through DataApex 7890 Control Module 2 ...

Page 7: ...Control module p n A23 Caution Minimal firmware version required for 7890A and 7890B is A 01 10 0 l LAN card in the PC l Cross LAN cable p n SK08 Note Cables are not part of Clarity Control Module It is strongly recommended to order required cables together with the Control Module 3 ...

Page 8: ...not use the Agilent 7890 DHCP server feature When using the LAN communication it is recommended to attach the GC chromatograph directly to the PC avoiding hubs switches etc Contact your local LAN administrator who can make the appropriate settings In case your network uses firewall for protection make sure that connection is not blocked in both directions chromatograph uses separate connection for...

Page 9: ...3 Installation Procedure Clarity Controls 3 2 Clarity Configuration Fig 2 System Configuration 5 ...

Page 10: ...work l Press the Autodetect button to read all settings from the instrument Upon successful detection the serial number of the GC will be displayed Note In most cases it is recommended not to change the settings obtained through the Autodetect function However some modules e g PCM valves or Aux Pressure modules are not autodetected correctly and in certain systems it is necessary to set them manua...

Page 11: ...n and components set the Syringe Size and Solvent Wash Mode l On Valves tab verify the identified valves on the Aux tab verify the detected auxiliaries l Press OK The Agilent 7890 item will appear in the Setup Control Modules list of the System Configuration dialog l Drag the GC icon from the Setup Control Modules list on the left side to the desired Instrument tab on the right side or use the but...

Page 12: ...tic sampler configured AS tab also appears allowing the setting of the autosampler method 4 1 Hardware Configuration Fig 4 Hardware Configuration This dialog is invoked by pressing the GC Status button in the Method Setup GC dialog Hardware Configuration dialog displays the type of the chromatograph it s serial number and the IP address and port to which it is connected 8 ...

Page 13: ... Autosampler Fig 5 Method Setup AS Mode Use Injector Selects the injector which will be used Use Tray Checks if Tray will have to be used Vial No Shift Sets the shift between numbers of vials injected by both injectors Active with both injectors and tray used 9 ...

Page 14: ... Dwell Time Sets the time the needle remains in the inlet after the injection Pre Washes Sets how many times the syringe will be washed by a particular solvent or sample before the injection Post Washes Sets how many times the syringe will be washed by a particular solvent after the injection Volume Sets the percentage of the syringe volume washed Sample Pumps Sets how many times the syringe plung...

Page 15: ...ular fields may vary according to the configuration Oven Max Sets the maximal allowed temperature for the column oven Note Please note that the maximum value may differ for certain GC models Equilibration Sets the time of oven temperature equilibration Gradient Table Sets the Heat Rate desired temperature Final Temp and time to hold this temperature Hold Time The Total Time column will be calculat...

Page 16: ...es Cryo Temp Sets the temperature setpoint for the cryogenic cooling Quick Cool Turns on off the Quick Cool feature Fault When checked GC shuts the oven down if it does not reach setpoint temperature after 16 minutes of continuous Cryo operation Timeout Turns on off and setting the setpoint for Cryo Timeout Post Run Time and Temp Sets the time and temperature of the Post Run period 12 ...

Page 17: ...lable for COC and PTV inlets Carrier Gas Sets the type of carrier gas used on this GC Temperature Gradient Table Allows to edit temperature ramp for the inlet up to three rates and plateaus Available for COC and PTV inlets Injection Pulse Press Time Sets the pressure and duration of pressure pulse during injection of the sample Available for PTV and Split Splitless inlets Pneumatic Mode Defines th...

Page 18: ...r Available for PTV and Split Splitless inlets Cryo Temp Sets the temperature setpoint for the cryogenic cooling Quick Cool Turns on off the Quick Cool feature Fault When checked GC shuts the oven down if it does not reach the setpoint temperature after 16 minutes of continuous Cryo operation Timeout Turns on off and setting the setpoint for Cryo Timeout Vent Flow Sets the flow rate for venting Av...

Page 19: ...rnal diameter of the column Film Sets the thickness of coating of the column Inlet Sets to which inlet is the particular column connected Detector Sets to which detector is the particular column connected Mode Sets the temperature mode of the column Pressure Flow Gradient Table Allows to edit the pressure or flow ramp for the column up to three rates and plateaus Active in Pressure Ramp or Flow Ra...

Page 20: ...Flow Sets the flow rate of a carrier gas in the column Active in Constant Flow mode only Post Run Flow or Pressure Sets the flow or pressure rate of a carrier gas after finishing the gradient Active in Pressure Ramp or Flow Ramp mode only 16 ...

Page 21: ...rs Constant Makeup Flow Sets the constant makeup flow into the detector In this mode GC will keep the actual makeup flow regardless of changes in the total flow during the GC run Available for most detectors Constant Column Makeup Flow Sets the constant combined flow into the detector In this mode GC will be adjusting the actual makeup flow in order to keep the total flow constant Available for mo...

Page 22: ... the automatic bead voltage adjusting When checked Offset field becomes active allowing to set the desired current offset value When unchecked Bead Voltage field becomes active allowing to set the voltage manually Available for NPD detector Lit Offset Sets the lit offset value Available for FID NPD and FPD detectors Bead Voltage Sets the bead voltage Field is active only with Auto Adjust checkbox ...

Page 23: ...ents that will be triggered during the run based on the analysis time This includes events like switching the detector polarity range or signal source where applicable setting temperatures to detector injector auxiliary zones controlling the valves etc To delete a row simply delete the value in the Time column on that row 19 ...

Page 24: ...aph there can be several tabs both with the similar appearance Pneumatics Turns on off the pneumatic control of a particular channel Mode Sets the working mode of PCM Channel A Pressure Sets the initial pressure available only in Pressure mode Total Flow Sets the initial Flow available only in Flow mode Postrun Pressure Sets the postrun pressure available only in Pressure mode Postrun Flow Sets th...

Page 25: ...t Table Sets the Pressure Flow Temperature rate desired value and time to hold this value Hold Time To delete a row simply delete the value in the Rate column on that row Heater Turns on off the heater Postrun Temperature Sets the postrun temperature 21 ...

Page 26: ...Agilent 7890 4 Using the control module 4 3 7 Gradients Fig 13 Method Setup GC Gradients This tab displays the temperature gradient as set on the Method Setup GC Oven Zones tab 22 ...

Page 27: ... Type Selects the type of signal from the particular Signal Source Note In case your GC has some non standard detector installed so called Channel Partner detectors it would be not possible to configure it in Agilent 7890 Setup window however its signal would be available for acquisition In such a case you have to select the signal according to position of the detector Specific Signal Selects the ...

Page 28: ...sible to change the sample rate all auxiliary signals are collected at 50 Hz sample rate In case some of the collected signals are auxiliary e g oven temperature or column gas flow all signals will be sampled at 50 Hz Signal Range Sets the range for the output signal As the range is increasing sensitivity is decreasing so the overall resolution is still the same 24 bit 24 ...

Page 29: ...panel depends on the type of selected valve Initially On Selects the initial state of the valve Available for Switch and Other valves only BCD Inverted Available for Multiposition valves only Step Time s Sets the Step Time Available for Multiposition valves only Position Sets the position Available for Multiposition valves only Loop Volume cm3 Sets the Loop Volume Available for Gas Sampling valves...

Page 30: ... the AS and GC tabs are not available in method setup Only the Acquisition tab is available to set the configured detector Range and Sample rate The sequence on first Instrument defines the vial numbers for first injector and injection volume for both The injection vial and injection volume in the second instrument sequence are just informative injection volume is equal to that on first instrument...

Page 31: ...ctual temperatures in each temperature zone and the column oven It also displays gas flows and pressures for all important parts of the GC An unequilibrated values are displayed in red letters Besides that there are sections for each detector and autosampler present Detector section shows names of the signals its sampling rates and the actual value of a particular signal 27 ...

Page 32: ...of the Agilent 7890 chromatograph IP Address of This Computer The IP address of the computer with installed Clarity datastation In case the computer is connected to more than one network select the IP address corresponding to the network with Agilent 7890 connected Autodetect Read all settings from the instrument Upon successful detection the serial number of the GC will be displayed Please note t...

Page 33: ...nually Front Back Inlet Sets the type of inlet installed in the GC Front Back etc Detector Sets the type of detector installed in the GC Column Check the presence of the columns installed in the GC Pressure Units Sets the pressure units used for setting the pressure of a carrier gas After changing the units the values in the methods will be converted automatically 29 ...

Page 34: ...e of the particular signal This Device Starts the Run in Clarity Clarity Starts This Device This radiobutton enables to start the analysis run from the Clarity With This Device Starts the Run in Clarity checked the device is started prior to Clarity by its front button or autosampler connected to this device and passes the start to Clarity When Clarity Starts This Device is checked Clarity is star...

Page 35: ... verify them manually Use Sampler Enables the autosampler for use with Agilent 7890 chromatograph Needs to be unchecked if you want to start the acquisition from the Clarity Name Allows to set the arbitrary name for the autosampler Type Sets the type of the autosampler installed Front Back Injector Enables the use of the particular injector Syringe Size Sets the size of the syringe installed Solve...

Page 36: ...s tab may be read from the chromatograph using the Autodetect button however it is advisable to verify them manually 4 8 6 Aux tab Fig 22 Agilent 7890 Setup Aux This tab displays the settings of auxiliary devices in the GC Settings on this tab may be read from the chromatograph using the Autodetect button however it is advisable to verify them manually 32 ...

Page 37: ... 8 7 PCM tab Fig 23 Agilent 7890 Setup PCM This tab displays the settings of Pneumatic Control Modules in the GC Settings on this tab may be read from the chromatograph using the Autodetect button however it is advisable to verify them manually 33 ...

Page 38: ...ig 24 Agilent 7890 report preview All chromatograph specific settings e g temperatures set to particular temperature zones are reported as a part of the data displayed by the use of Instrument Control checkbox of the Report Setup Method dialog 34 ...

Page 39: ...dited or added TCP_IP 192 168 0 100 9110 echo on textmode on filename Agilent7890_ D txt reset off Note Instead of 192 168 0 100 9110 type correct IP address and port used to communicate with the Agilent 7890 chromatograph This port number is displayed when the GC Status button in the Method Setup GC dialog is invoked or in the Agilent 7890 Setup dialog Note D or d in the filename parameter means ...

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