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Summary of Contents for Pfeiffer Vacuum Quadrupole Electronics QME 125-1
- Page 1 Operating Instructions incl. Declaration of Conformity Quadrupole Electronics QME 125 BG 805 987 BE (2004-04)
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Page 2: Product Identification
We reserve the right to make technical changes without prior notice. Intended Use The Quadrupole Electronics QME 125 is part of the Pfeiffer Vacuum mass spec- trometry system. It generates the necessary RF voltage for the analyzer and pro- vides all supply voltages for the various ion sources. -
Page 3: Table Of Contents
Contents Product Identification Validity Intended Use 1 Safety 1.2 Personnel Qualifications 1.3 General Safety Instructions 1.4 Liability and Warranty 2 Description 3 Technical Data 3.1 IS 125 Ion Source Supply 3.2 RF Generators RF 125-1, RF 125-2 3.3 HV 125 High-Voltage Supply 4 Installation 4.1 Standard Installation 4.2 Electrical Connection... -
Page 4: Safety
1 Safety 1.1 Symbols Used DANGER Information on preventing any kind of physical injury. WARNING Information on preventing extensive equipment and environmental damage. Caution Information on correct handling or use. Disregard can lead to malfunctions or mi- nor equipment damage. <... -
Page 5: Liability And Warranty
Make sure no objects enter through the louvers and no liquids pene- trate into the equipment. 1.4 Liability and Warranty Pfeiffer Vacuum assumes no liability and the warranty becomes null and void if the end-user or third parties • disregard the information in this document •... -
Page 6: Description
2 Description The QME 125 quadrupole electronics comprises the following assemblies: IS 125 Ion Source Supply Produces all operating voltages required for the various ion sources. A filament protection circuit is also included. RF 125 Radio-Frequency Produces the radio frequency signal with superimposed DC voltage required for Generator mass separation. -
Page 7: Technical Data
3 Technical Data Mass Range QME 125-1 0 … 100 u QME 125-2 0 … 200 u Supply Voltage Voltage +24 VDC ±1 V, 1.5 A –24 VDC ±1 V, 1.5 A Connections QMS connection cable connector, 25-pin, D-sub/pins Analyzer connection QMA 125 HV connection coaxial socket SHV... -
Page 8: Rf Generators Rf 125-1, Rf 125-2
3.2 RF Generators Mass range M ≈0.5 ... 100 u RF 125-1 RF 125-1, RF 125-2 M ≈0.5 ... 200 u RF 125-2 Constant peak width ∆ M M ≈0.3 ... 2 u, adjustable RF 125-1 M ≈0.5 ... 2 u, adjustable at 10% peak height RF 125-2 M >0.3 u, adjustable... -
Page 9: Installation
4 Installation 4.1 Standard Installation Caution Caution: magnetic fields High-intensity magnetic fields caused by electrical motors or genera- tors or similar sources in close proximity to the ion source, C-SEM or SEM can lead to malfunctions of the instrument. Protect the instrument from the influence of high-intensity magnetic fields by arranging the system components appropriately or by install- ing magnetic shields. -
Page 10: Electrical Connection
4.2 Electrical Connection Ground Connection A grounding cable (length 0.3 m) is delivered with the QME 125, one side is already connected to the ground terminal at the front panel of the QME 125. The loose end must be connected to a reliable ground potential at the vacuum chamber. Ground terminal extraction deflection... -
Page 11: Initial Start Up
5 Initial Start Up DANGER Caution: line voltage Products that are not professionally interconnected ground can be extremely hazardous in the event of a fault. Do not switch on the mains supply before all system components are correctly interconnected. Complete System When a complete system is supplied the, parameters are preset by the factory and should not unnecessarily be changed (→... - Page 12 Ion Source Voltages <ion ref> The voltage on the measurement socket can be as high as 300 V (high impedance). Measurements should only be performed by skilled per- sonnel. extraction deflection focus ion ref field axis ion ref QMA gnd ion ref QMA gnd tune...
- Page 13 QMA gnd filament select caution: turn off control unit before handling connectors! remote filament select polarity fil 1 remote fil 1 fil 2 fil 2 QME 125 Switch setting normal degas (QMS 422) <fil 1> Filament 1 Filament 1 and 2 <fil 2>...
- Page 14 Ion Deflection Voltage The ion deflection voltage is adjusted with <deflection>. <deflection> emission defl focus extraction field axis protection normal degas defl resolution resolution coarse cal high cal low Applicability Analyzers with 90° SEM Adjustment crite- Maximum peak height at the extraction rion peak with the highest mass...
- Page 15 Field Axis Voltage <field axis> The field axis voltage influences the quantity and speed of the ions injected into the rod system. The resolution and sensitivity are thus also dependent on the field axis. defl focus emission extraction field axis protection normal degas...
- Page 16 Original Alignment • Set the trimmer potentiometers <emission normal> and <protection> to the (after replacement or minimum ( counterclockwise limit position, audible click). Filament change) protection emission normal defl focus emission extraction field axis protection normal degas resolution coarse resolution cal high cal low •...
- Page 17 Emission <emission degas> The «degas mode» is only admissible for certain types of ion sources (→ [1]). defl focus emission degas extraction field axis protection normal emission degas resolution resolution coarse cal high cal low The factory disables the «degas» mode by means of a jumper on the IS 125 board. This inhibition can be canceled by changing the jumper position.
- Page 18 Mass Separation <resolution> In order to adjust the resolution, align the QMS 422 controller in such a way that you obtain a spectrum containing a few peaks. Examples «resolution» setting too high: «resolution» setting too low: Any change in the <resolution> has a strong influence on the sensitivity. The field axis voltage also influences the resolution.
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Page 19: Maintenance
6 Maintenance Except for occasional inspection of the RF generator alignment (tune) as well as the mass calibration, the QME 125 does not require any particular maintenance. 6.1 Alignment Procedures Trimmer Slug <tune> The RF generator is tuned to the analyzer capacity by means of the <tune> trimmer ≥1 MΩ, range 2 …... -
Page 20: Mass Scale Alignment
6.2 Mass Scale Alignment Mass Scale The potentiometers <cal high> and <cal low> are used for aligning the mass scale. <cal high> / <cal low> emission defl focus extraction field axis protection normal degas cal high cal low resolution resolution coarse cal high cal low <cal low>... -
Page 21: Alignment With Qms 422
6.3 Alignment With (→ [2]) QMS 422 • Select a setting of SPEED, RANGE, and GAIN and possibly of SEM VOLTAGE which produces a sufficiently high peak of the corresponding mass number. • Switch SCAN to RESET (or SAMPLE-N at QMS 422) and SPEED to a slow setting in order to obtain good filtering. -
Page 22: Cleaning
6.5 Cleaning Clean the unit as often as required, depending on the dust contamination. Cleaning the Outside Switch off the controller. A slightly damp cloth normally suffices for cleaning the outside of the unit. Do not use any aggressive or scouring cleaning agents. Make sure that no liquid can penetrate the product. -
Page 23: Repair
We recommend returning the product to your local Pfeiffer Vacuum service center for repair. Pfeiffer Vacuum assumes no liability and the warranty becomes null and void if any repair work is carried out by the end-user or third parties. Troubleshooting Troubleshooting is only possible in conjunction with the complete system (→... -
Page 24: Accessories
8 Accessories Ordering number HV 125 high-voltage unit for retrofitting BG442160-T 9 Spare Parts When ordering spare parts, always indicate: • all information on the product nameplate • description and ordering number according to the spare parts list Ordering number Ion source supply IS 125 450-892... -
Page 25: Disposal
Appendix [1] www.pfeiffer-vacuum.de Literature Operating Instructions Quadrupole Analyzer QMA 125 BG 805 988 BE Pfeiffer Vacuum GmbH, D-35614 Asslar [2] www.pfeiffer-vacuum.de Operating Instructions Quadrupole Mass Spectrometer System QMG 422 BG 805 981 BE Pfeiffer Vacuum GmbH, D-35614 Asslar BG 805 987 BE (2004-04) QME125.oi... -
Page 26: Declaration Of Contamination
Declaration of Contamination The service, repair, and/or disposal of vacuum equipment and components will only be carried out if a correctly completed declaration has been submitted. Non-completion will result in delay. This declaration may only be completed (in block letters) and signed by authorized and qualified staff. Description of product Reason for return Type... -
Page 27: Declaration Of Conformity
Declaration of Conformity We, Pfeiffer Vacuum, hereby declare that the equipment mentioned below com- plies with the provisions of the Directive relating to electrical equipment designed for use within certain voltage limits 73/23/EEC and the Directive relating to electro- magnetic compatibility 89/336/EEC. - Page 28 Berliner Strasse 43 D–35614 Asslar Deutschland Tel +49 (0) 6441 802-0 Fax +49 (0) 6441 802-202 info@pfeiffer-vacuum.de Original: German BG 805 987 BD (2004-04) www.pfeiffer-vacuum.de bg805987be...
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