Endress+Hauser Analytik Jena PlasmaQuant MS Series Service Manual
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Endress+Hauser Analytik Jena PlasmaQuant MS Series Service Manual

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Summary of Contents for Endress+Hauser Analytik Jena PlasmaQuant MS Series

  • Page 1: Service Manual

    Service Manual PlasmaQuant MS series ICP MS...
  • Page 2 Analytik Jena GmbH Manufacturer Konrad-Zuse-Str.1 07745 Jena  Germany Phone + 49 3641 / 77 70 + 49 3641 / 77 92 79 Email info@analytik-jena.com Analytik Jena GmbH Service Konrad-Zuse-Str. 1 07745 Jena  Germany Phone + 49 3641 / 77-7407 (Hotline) Email service@analytik-jena.com http://www.analytik-jena.com...

  • Page 3: Table Of Contents

    PlasmaQuant MS Series Contents Contents Service Manual ........................1 PlasmaQuant MS series ICP MS ..................1 Contents ..........................3 Safety Practices and Hazards ..................9 Safety Messages and Symbols ................9 1.1.1 Warning Symbols ..................10 Color Coding ...................... 10 Information Symbols ..................
  • Page 4 Contents PlasmaQuant MS Series 4.2.6 Sample Introduction PCB ................26 Safety and Operational Information ............... 26 Specifications ....................28 Maintenance ....................28 4.5.1 Cleaning the Torch ..................29 4.5.2 Removing and Replacing the Nebulizer ............. 30 4.5.3 Cleaning the Concentric Nebulizer ............. 30 4.5.4 Removing and Replacing the Spray chamber ..........
  • Page 5 PlasmaQuant MS Series Contents 6.2.3 RF Generator Module .................. 62 6.2.4 DC Power Supply Module ................64 6.2.5 Translation Mechanism ................65 6.2.6 Plasma Start-up Procedure ................. 66 Safety and Operational Information ............... 67 Specifications ....................68 Maintenance ..................... 69 6.5.1 Repairing RF Generator ................
  • Page 6 Contents PlasmaQuant MS Series 7.5.4 Maintaining Turbo-molecular Pumps ............110 7.5.5 Removing Thermocouple Gauge Head (G1) ..........111 Mass Spectrometer ....................112 Introduction ....................112 System Description ..................112 Theory of Operation..................113 8.3.1 Ion Source....................113 8.3.2 Interface Assembly ..................114 8.3.3 Ion Optics System ..................
  • Page 7 PlasmaQuant MS Series Contents 9.2.9 Specifications....................163 Maintenance ....................164 9.3.1 Removing Quadrupole Controller ............. 164 9.3.2 Quadrupole Control Drive Looms .............. 167 9.3.3 Setting Rest Mass..................169 9.3.4 Adjusting Resonation ................169 Electronics ......................173 10.1 Introduction ....................173 10.2 System description ..................
  • Page 8 Contents PlasmaQuant MS Series 14.2 Recommended Spare Parts List ..............206 Maintenance Forms and Checklists..............211 15.1 Routine Maintenance Schedule ..............211 15.2 Operator Checklist ..................213 15.3 Preventative Maintenance Checklist ............214 Figures ..........................217 Tables ..........................221...

  • Page 9: Safety Practices And Hazards

    Safety Practices and Hazards PlasmaQuant MS Series Safety Practices and Hazards The Analytik Jena PlasmaQuant ICP-MS (ICP-MS) and accessories have been carefully designed so that when used properly it is an accurate, fast, flexible, and safe analytical system. If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

  • Page 10: Warning Symbols

    Safety Practices and Hazards PlasmaQuant MS Series WARNING Indicates a potentially hazardous situation which might cause fatal or very serious injuries (deformities). CAUTION Indicates a potentially hazardous situation which might cause light or minor injuries. NOTICE Provides indications of potential material and environmental damage. Notes (without symbol or signal word) are used to give advice or additional information.

  • Page 11: Information Symbols

    Safety Practices and Hazards PlasmaQuant MS Series Information Symbols The following symbols appear on the ICP-MS instrument to provide additional information: Symbol Information Power ON Power OFF Fuse Single Phase Alternating Current (AC) Direct Current (DC) Indicates that the product complies with the requirements of one or more EU Directives OUT position of a bi-stable push switch IN position of a bi-stable push switch...

  • Page 12: Electricity

    Safety Practices and Hazards PlasmaQuant MS Series Shielding around the plasma compartment is designed to reduce UV, visible, and RF radiation to safe levels while still permitting easy access to the torch when maintenance is required. The spectrometer has an interlock system which is designed to extinguish the plasma if either plasma compartment latch is opened or if any of the cooling water, argon gas, or air flow rates drop below the required minimum level.

  • Page 13: Compressed Gas

    Safety Practices and Hazards PlasmaQuant MS Series 1.4.3 Compressed Gas  All compressed gases (other than air) can create a hazard if they leak into the atmosphere. Even small leaks in gas supply systems can be dangerous. Any leak (except that of air) can result in an oxygen deficient atmosphere which can cause asphyxiation.

  • Page 14: Heat, Ozone, Vapors, And Fumes

    Safety Practices and Hazards PlasmaQuant MS Series  In the event of a power failure, hydrogen gas may continue to flow from the supply even if the ICP-MS is completely off. Always manually shut off the hydrogen gas supply valve when there is no power to the ICP-MS. Instead of using pressurized gas cylinders as a source of hydrogen, consider using a hydrogen gas generator instead.

  • Page 15: Radio Frequency Radiation

    Safety Practices and Hazards PlasmaQuant MS Series  Before attempting any maintenance on the sample introduction system, the field service engineer must be fully aware of all types of sample matrices and solvents that have been presented to the system. Field service engineers should wear rubber gloves to protect their hands whenever working on the sample introduction system.

  • Page 16: Regulatory Compliance

    Safety Practices and Hazards PlasmaQuant MS Series  The instrument should never be moved or disturbed while the vacuum system is running.  Never try to repair or replace an instrument component not described in the Manual without first consulting Analytik Jena or its authorized representative in your area.

  • Page 17: Ce Compliance

    Safety Practices and Hazards PlasmaQuant MS Series 1.6.3 CE Compliance The PQMS ICP-MS instrument has been designed to comply with the requirements of the Electro-Magnetic Compatibility (EMC) Directive and the Low Voltage (electrical safety) Directive (commonly referred to as the LVD) of the European Union. Analytik Jena has confirmed that each product complies with the relevant Directives by testing a prototype against the prescribed EN (European Norm), IEC, or CISPR standards.

  • Page 18: Introduction

    Introduction PlasmaQuant MS Series Introduction The ICP-MS system requires regular maintenance to ensure continued optimum performance throughout its operating life. The operators perform routine maintenance tasks daily and weekly. In addition, once a year a field service engineer should visit the site and complete a comprehensive preventative maintenance visit. This Service Manual provides all the necessary information and systematic instructions for you to complete the annual preventative maintenance tasks for the ICP-MS.

  • Page 19: Additional Resources

    Introduction PlasmaQuant MS Series  Always ensure that the power source is disconnected before working on the cooling system. Spilling water on live electrical circuitry could cause death or severe electrical shock.  Never locate gas cylinders near an ignition source or in a position subjected to direct heat.

  • Page 20: Preventative Maintenance Overview

    Preventative Maintenance Overview PlasmaQuant MS Series Preventative Maintenance Overview The following table outlines the recommended preventative maintenance procedure and provides references to details for each step. You can use this as a checklist to systematically guide you through a preventative maintenance routine. Parts Required 10-5000-220-20 Kit preventative maintenance ICP-MS 418-88089-0 Vacuum pump oil, 1L or...
  • Page 21 Preventative Maintenance Overview PlasmaQuant MS Series Water Cooling System Drain water reservoir. Clean pump strainer as needed Clean air intake filters & heat exchange fins as needed Inspect all water hoses for cracks/leaks. Disassemble inline water filter & clean cartridge. Fill water reservoir with additives and check the water conductivity according to instruction.

  • Page 22: Sample Introduction

    Sample Introduction PlasmaQuant MS Series Sample Introduction This chapter describes the operation and maintenance of the standard ICP-MS sample introduction system. Some of the sample introduction system’s hardware is contained in the instrument’s gas box assembly, in particular, the sample introduction PCB. This chapter contains the circuit description of the sample introduction section of the sample introduction PCB.

  • Page 23: Theory Of Operation

    Sample Introduction PlasmaQuant MS Series Theory of Operation The sample introduction system generates an aerosol, in a carrier gas, from a liquid sample and directs it into the center of the toroidal plasma. As the sample passes through the plasma, it rapidly undergoes the following transformation: 1.

  • Page 24: Peristaltic Pump

    Sample Introduction PlasmaQuant MS Series 4.2.2 Peristaltic Pump A four channel peristaltic pump controls the sample flow to the nebulizer. This uptake method minimizes variations in the natural uptake rate of the nebulizer as a result of viscosity effects, the hydrostatic pressure head, and surface tension of samples. A second channel on the peristaltic pump, pumps the drain of the spray chamber, which improves the analytical precision of the instrument, preventing fluctuations of pressure within the spray chamber.

  • Page 25: Sheath Gas Accessory Port

    Sample Introduction PlasmaQuant MS Series 4.2.4 Sheath Gas Accessory Port Sheath gas tubing is connected to the transfer tube. It creates a spiral of argon gas to prevent the nebulized sample from contacting the inner walls of the transfer tube. This technique assists in minimizing sample memory effects.

  • Page 26: Sample Introduction Pcb

    Sample Introduction PlasmaQuant MS Series 4.2.6 Sample Introduction PCB The sample introduction PCB is located in the gas box assembly. In response to commands from the instrument system control PCB, the sample introduction PCB performs the following functions:  Drive the peristaltic pump ...
  • Page 27 Sample Introduction PlasmaQuant MS Series Wash your hands and change your gloves frequently when working with sample introduction hardware and avoid touching your eyes. Solutions containing hydrofluoric acid (HF) can cause loss of limbs, severe burns, and death. DO NOT work with any sample introduction system components that have been used with HF unless the customer flushes the system and removes the drain bottle contents.

  • Page 28: Specifications

    Sample Introduction PlasmaQuant MS Series CAUTION The torch and induction coils become very hot during plasma operation. Prevent burns by ALWAYS allowing the parts to cool for at least three minutes before touching them. Specifications The following list defines the sample introduction components supplied standard with the ICP-MS: ...

  • Page 29: Cleaning The Torch

    Sample Introduction PlasmaQuant MS Series 4.5.1 Cleaning the Torch During normal operation, deposits may form on the torch that may interfere with the operation of the instrument. Regular cleaning of the torch is required to avoid possible problems. The cleaning requirements for the torch will vary, depending on the type of sample matrix run and the frequency of cleaning.

  • Page 30: Removing And Replacing The Nebulizer

    Sample Introduction PlasmaQuant MS Series 4.5.2 Removing and Replacing the Nebulizer 1. Disconnect the sample capillary from the nebulizer. 2. Remove the nebulizer from the spray chamber end cap. 3. Disconnect the nebulizer gas tubing from the nebulizer. 4. Before refitting the nebulizer end cap, inspect the condition of the nebulizer and end cap O-rings.

  • Page 31: Removing And Replacing The Spray Chamber

    Sample Introduction PlasmaQuant MS Series 3. Screw the nebulizer holder on the syringe. 4. Slide the nebulizer with the tip first into the holder. The argon gas connection should be fitted into the groove of the holder. 5. Hold the nebulizer cleaning tool over a receptacle and push the plunger into the syringe.

  • Page 32: Cleaning The Spray Chamber

    Sample Introduction PlasmaQuant MS Series 4.5.5 Cleaning the Spray Chamber 1. Remove spray chamber as per section 4.5.4, page 31. 2. Submerge the spray chamber in a 10% nitric acid solution overnight 3. Rinse spray chamber with de-ionized water before replacing back in instrument 4.5.6 Replacing the Peristaltic Pump Tubing When the pump tubing appears deformed, or is loose on the pump rollers, it should be...

  • Page 33: Removing The Peristaltic Pump Assembly

    Sample Introduction PlasmaQuant MS Series If more than just the sample and drain tubing are to be run, then use the following configuration: 1st (closest to the instrument) -- Drain tubing.  2nd -- Internal standard or diluent tubing.  3rd -- Sample tubing.

  • Page 34: Gas Control System

    Gas Control System PlasmaQuant MS Series Gas Control System This chapter describes the operation and maintenance of the instrument gas control system. A few notes on where to find information:  A majority of the gas control system hardware is contained in the instrument gas box assembly.
  • Page 35 Gas Control System PlasmaQuant MS Series Figure 5-1 - Inside Gas Control Box  Enables/disables the flow of argon gas entering the instrument The gas box assembly:  Senses that the argon gas supply is above the minimum pressure (460 kPa) ...

  • Page 36: Table 3 - Solenoid Valve Functions Within Gas Control Assembly

    Gas Control System PlasmaQuant MS Series The selected plasma flow passes through a combination passage and the reservoir assembly to the torch. The plasma orifice jewels are sized to deliver 1.5 L/min, 3.0 L/min, 6.0 L/min, and 12 L/min for a maximum flow of 22.5 L/min. The reservoir assembly aids reliable plasma ignition and helps dampen gas flow changes to the torch.
  • Page 37 Gas Control System PlasmaQuant MS Series Figure 5-2- Gas box assembly block diagram Figure 5-3 - The sheath and nebulizer gas mass flow controllers (white) along with the nitrox mass flow controller (chrome)

  • Page 38: Icrc Gas Control

    Gas Control System PlasmaQuant MS Series Figure 5-4 - The gate valve and large isolation-valve solenoids mounted on the back wall of the main chassis behind and to the left of VC3. (Large isolation valve control cable is connected to iCRC gas box shown on the right picture) 5.1.2 iCRC Gas Control...
  • Page 39 Gas Control System PlasmaQuant MS Series Figure 5-6 - Transparent view of iCRC box The iCRC gas box assembly: Controls the flow of gas entering the skimmer cone.  Switches the gas delivered to the skimmer cone between hydrogen and helium. ...
  • Page 40 Gas Control System PlasmaQuant MS Series NOTE The line is under vacuum. Therefore, during troubleshooting, you cannot detect gas leaks with a leak detector. You must evaluate the iCRC system’s analytical performance to determine leaks in the system between the iCRC gas box output and the cones.

  • Page 41: Theory Of Operation

    Gas Control System PlasmaQuant MS Series The unit will provide false flow-control if the gas-flow path becomes contaminated with air. The flow sensor consists of a heated element and two temperature sensors; one before and one after the heated element. When gas flows past the heated element, the sensors measure the temperature and calculates the mass flow based on the temperature differential that is measured.
  • Page 42 Gas Control System PlasmaQuant MS Series The argon pressure switch is located in line, beside the inlet solenoid, and connects Argon Pressure Switch through the sample introduction PCB to the system control PCB (TP10). The relatively low series resistors (R5/R6), in series with the switch, provide adequate wetting for the contacts.

  • Page 43: Table 4 - Sample Introduction Pcb Diagnostic Led Identification

    Gas Control System PlasmaQuant MS Series LED# Function Argon Flow AUXGAS1 0.15 L/min AUXGAS2 0.3 L/min AUXGAS3 0.6 L/min AUXGAS4 1.2 L/min EN-GATE-VALVE Enabled EN-ISOLATION-VALVE Enabled EN-ARGON Enabled AR STATUS >460±5kPa Table 4 - Sample introduction PCB diagnostic LED identification The mass flow controller supplies a specified rate of gas.
  • Page 44 Gas Control System PlasmaQuant MS Series The main argon inlet pressure supplies a gate valve solenoid or “changeover valve", Gate Valve and Large which opens and closes the gate valve. Isolation Solenoids The gate valve is a gas-actuated assembly that isolates the high vacuum system from the atmosphere.

  • Page 45: Icrc Gas Control

    Gas Control System PlasmaQuant MS Series 5.2.2 iCRC Gas Control The iCRC gas box interfaces with the system control PCB and directly controls the following gas box items:  iCRC gas mass flow controller (MFC4)  Helium/hydrogen pressure sensors  iCRC gas enable ...

  • Page 46: Replacement/Maintenance

    Gas Control System PlasmaQuant MS Series Instrument Requirements Plasma Gas Flow range 0 to 22.5 L/m Solenoid #1 12.0 L/min Solenoid #2 6.0 L/min Solenoid #3 3.0 L/min Solenoid #4 1.5 L/min Accuracy ±15% of the desired flow Incremental adjustment 1.5 L/m Auxiliary Gas Flow range...

  • Page 47: Cover Removal Procedures To Access The Gas Control Box

    Gas Control System PlasmaQuant MS Series 5.5.1 Cover Removal Procedures to Access the Gas Control Box Figure 5-12 - Removal of instrument covers to access gas control box - A Figure 5-13 - Removal of covers to access gas control box - B ...

  • Page 48: Removal Of Sample Introduction Pcb

    Gas Control System PlasmaQuant MS Series 5.5.2 Removal of Sample Introduction PCB Figure 5-14 - View inside gas control box 1. Remove covers as per section 5.5.1, page 47 to reach gas box assembly. 2. Disconnect all cables from sample introduction PCB (ensure cables are marked. If not, mark cables for easy replacement or take photo).

  • Page 49: Removing Sheath Gas, Nebulizer And Nitrox Mass Flow Controllers

    Gas Control System PlasmaQuant MS Series 5.5.3 Removing Sheath Gas, Nebulizer and Nitrox Mass Flow Controllers Figure 5-15 - Positioning of MFCs within gas control box 1. Remove covers as outlined in section 5.5.1, page 47 to reach gas box assembly. 2.

  • Page 50: Removing The Argon Inlet Manifold With Rg1 And Rg2 Attached

    Gas Control System PlasmaQuant MS Series 5.5.4 Removing the Argon Inlet Manifold with RG1 and RG2 Attached Figure 5-16 - Positioning of RG1 and RG2 within gas control box 1. Remove covers as outlined in section 5.5.1, page 47 to reach gas box assembly. 2.

  • Page 51: Removing Plasma/Auxiliary Gas Flow Manifold

    Gas Control System PlasmaQuant MS Series 5.5.5 Removing Plasma/Auxiliary Gas Flow Manifold Figure 5-17 - Plasma/Auxiliary gas control manifold within gas control box 1. Remove covers as outlined in section 5.5.1, page 47 to reach gas box assembly. 2. Remove the plasma and auxiliary gas tubes from the manifold. (Clearly mark each tube before removing for easy identification).

  • Page 52: Checking Plasma Gas Flows

    Gas Control System PlasmaQuant MS Series 5.5.6 Checking Plasma Gas Flows Figure 5-18 - Connection of Rotameter to plasma gas port within RF enclosure To check the plasma gas flows: 1. Connect a 0–40 L/min flow meter to the plasma outlet (lower outlet) inside the RF enclosure.

  • Page 53: Checking Auxiliary Gas Flows

    Gas Control System PlasmaQuant MS Series 5.5.7 Checking Auxiliary Gas Flows Figure 5-20 - Connection of Rotameter to auxiliary gas from front opening within RF enclosure To check the auxiliary gas flows 1. Connect a 0–4 L/min rotameter to the auxiliary outlet (upper outlet) inside the RF enclosure.

  • Page 54: Igniter Assembly

    Gas Control System PlasmaQuant MS Series 5.5.8 Igniter Assembly Figure 5-21 - Igniter assembly 1. Remove covers as outlined in section 5.5.1, page 47 to reach gas box assembly. 2. Remove 4 screws from metal panel in front of igniter, and remove the panel. 3.

  • Page 55: Checking Nebulizer Gas Flow (Mfc1)

    Gas Control System PlasmaQuant MS Series 5.5.10 Checking Nebulizer Gas Flow (MFC1) 1. Connect a 0–4 L/min rotameter to the sheath gas outlet (upper outlet) on the lower-front panel of the gas box. 2. In the software, go to the diagnostics module and select the Plasma Status/Control page.

  • Page 56: Removing And Maintaining The Icrc Box Assembly

    Gas Control System PlasmaQuant MS Series 2. Remove turbo pump # 1 – refer to vacuum section 7.5.1, page 106 on how to remove turbo # 1. 3. Remove the ion mirror, refer to mass spectrometer section 8.7.4, page 152 on how to remove ion mirror.
  • Page 57 Gas Control System PlasmaQuant MS Series Figure 5-23 - iCRC box assembly 1. Remove the iCRC box assembly as per section 5.5.1, page 47. Removing the Hydrogen and Helium Pressure 2. Remove the iCRC box assembly cover by removing the appropriate screws (Figure Sensors 5-24).
  • Page 58 Gas Control System PlasmaQuant MS Series Figure 5-24 - Removing iCRC box assembly cover 1. Disconnect the pressure sensor cable from the sensor (Figure 5-25). 2. Remove the pressure sensor by hand or by gently using pliers. 3. Replace in reverse of removal. Figure 5-25 - iCRC helium and hydrogen pressure sensors Inspect the O-rings located on the iCRC solenoid valves and replace if required (Figure Inspecting the O-rings on...
  • Page 59 Gas Control System PlasmaQuant MS Series Figure 5-26 - Showing O-rings on iCRC solenoid valves...

  • Page 60: Plasma Generation

    Plasma Generation PlasmaQuant MS Series Plasma Generation This chapter describes the operation and maintenance of the plasma generating system. This includes the RF generator, DC power supply, and translator. For information relating to the sampling of ions from the plasma and transmission into the mass spectrometer, refer to Mass Spectrometer section, page 112.

  • Page 61: Igniter Assembly

    Plasma Generation PlasmaQuant MS Series plasmas are the electrical discharges in neon advertising signs and electric arcs, not to mention the giant ball of plasma at the center of our solar system. The inductively coupled plasma (ICP) used in analytical spectrometry is an atmospheric-pressure plasma, generated in argon gas flowing through a specially designed torch.

  • Page 62: Rf Generator Module

    Plasma Generation PlasmaQuant MS Series 6.2.3 RF Generator Module Figure 6-3 - RF Generator assembly The Solid State Radio Frequency generator (SSRF) creates the electromagnetic field, by which energy transfers through inductive coupling to an argon gas, which forms an atmospheric pressure plasma.
  • Page 63 Plasma Generation PlasmaQuant MS Series Figure 6-5 - Redline DC power supply Figure 6-6 - H-Bridge circuit used to create 27 MHz plasma During normal operation, an “induced” voltage, originating from two separate strip- line transformers located inside the RF generator, enables the gates on the FETs. The transformers enable the gates of the FET’s diagonally so the RF power supply applies voltage to both sides of the load coil.

  • Page 64: Dc Power Supply Module

    Plasma Generation PlasmaQuant MS Series In order to start the oscillation of the work coil, the filter PCB on the back of the RF enclosure sends a temperature signal through the feedback/power monitor. As the power supply voltage increases above 54 V, the signal from the filter board reduces step wise until the power supply reaches 130 V.

  • Page 65: Translation Mechanism

    Plasma Generation PlasmaQuant MS Series 6.2.5 Translation Mechanism The torch translation mechanism is located in the lower part of the RF enclosure. The translator positions the plasma relative to the sampler cone. This allows for optimal transfer of ions to the mass analyzer. The X, Y and Z planes are defined as follows Axis Direction...

  • Page 66: Plasma Start-Up Procedure

    Plasma Generation PlasmaQuant MS Series The vertical mechanism (or Y-axis) is a belt screw mechanism. The lead screw lifts the Vertical Mechanism front of the translator table up and down. Because the table is hinged at the back end (on the depth screw mechanism), any motion of the table in the Y-direction results in a change of the horizontal position of the torch.

  • Page 67: Safety And Operational Information

    Plasma Generation PlasmaQuant MS Series State Firmware action Set plasma and auxiliary flow to Ignite Set mass flow controllers to Ignite Set RF power to ignite Enable igniter *IMPROPER *If improper ignition detected (current does not reach set IGNITION point of 11 A): Set DC Supply current to 4 A Set plasma flow to 22.5 L/min Wait 3 seconds...

  • Page 68: Specifications

    Plasma Generation PlasmaQuant MS Series Specifications The following table defines the instrument plasma generation system specifications. Igniter Assembly Spark voltage 15 kV (approximately) Spark frequency 3 per second (approximately) Spark duration 80 µsec (approximately) Spark energy 50 mJ (approximately) Translation Mechanism Horizontal axis Range Analytical ±...

  • Page 69: Maintenance

    Plasma Generation PlasmaQuant MS Series Redline DC Supply Module Input Voltage Range 180 to 264 VAC, 48 to 63 Hz single phase Input Current (maximum) 13A at Full Load Output Voltage Range 0 to +190 V (for Redline 45.22.60.100) Start-up Time 5 seconds Current Limit Protection 125 to 150%...

  • Page 70: Replacing Torch

    Plasma Generation PlasmaQuant MS Series The translator platform X-axis functionality may require a bit more care than the Y- or Z-axis drive mechanisms during replacement. However, due to the location of the drive motor and opto sensor (under the translator platform, inside the RF compartment) no routine maintenance can be performed on the X-axis drive mechanism.
  • Page 71 Plasma Generation PlasmaQuant MS Series Figure 6-10 - Cooling water enable box 10. LED “Water Flow Detected” will illuminate GREEN. 11. Open the Plasma door and check for water leaks. Figure 6-11- 4 mm Allen screws securing RF generator Figure 6-12 - Removing the RF Generator...

  • Page 72: Replacing, Aligning, And Adjusting The Plasma Coil

    Plasma Generation PlasmaQuant MS Series Figure 6-13 - A properly mounted RF generator 6.5.6 Replacing, Aligning, and Adjusting the Plasma Coil This procedure provides information on how to remove, replace, and align the load coil. Plasma coil replacement: Figure 6-14 - Replacement plasma coil 1.
  • Page 73 Plasma Generation PlasmaQuant MS Series 2. Using a wrench, unscrew the Swageloks securing the plasma coil to the front of the RF generator and remove the coil. NOTE Plasma coil is not symmetric; take note of the winding direction before removing. 3.
  • Page 74 Plasma Generation PlasmaQuant MS Series Figure 6-16 - Parts required for plasma coil alignment 2. Check that the left edge of the torch holder is parallel with the right edge of the PEEK frame that holds the work coils (see Figure 6-16). 3.
  • Page 75 Plasma Generation PlasmaQuant MS Series Figure 6-18 - Below torch holder showing adjustment screw 6. Screw alignment tool into the plasma coil so that the alignment pin doesn't touch the coil. Figure 6-19 - Proper positioning of alignment tool in plasma coil 7.
  • Page 76 Plasma Generation PlasmaQuant MS Series Figure 6-20 - A properly positioned alignment tool 11. Gently press the plasma coil a little with the alignment tool, such that the gap shown by the yellow arrow is minimized. Figure 6-21 - Using alignment tool in reverse to adjust plasma coil position 12.
  • Page 77 Plasma Generation PlasmaQuant MS Series Figure 6-22 - Position markers of a well aligned plasma coil 13. Remove the alignment tool. 14. Replace torch as per Section 6.5.5, page 70. Figure 6-23 - Properly positioned torch within plasma coils 15. Verify the distance between coil and auxiliary tube edge must be approx. 2mm (front view, yellow arrows –...
  • Page 78 Plasma Generation PlasmaQuant MS Series Figure 6-24 - 2 mm gap between plasma coil and auxiliary tube edge 16. The torch must be adjusted in the center of the coil (Figure 6-25). If not, bend the coil a small amount. (Note: Do this only with the torch removed). 17.
  • Page 79 Plasma Generation PlasmaQuant MS Series 5. In the DC supply section, set the Voltage Limit (V) and Current Limit (A) to 53 V and 4 A respectively. Select the “AC Relay activated“ and “DC supply output enabled“ boxes, and press apply (see Figure 6-26 below). 6.

  • Page 80: Removing Rf Enclosure Filter Assembly

    Plasma Generation PlasmaQuant MS Series 6.5.7 Removing RF Enclosure Filter Assembly The RF filter feedthrough assembly routes all of the LVDC control signals and supplies required for operation of the RF generator, oscillator bias and XYZ translation mechanism into the RF compartment. NOTE No calibrations are required on replacement of this assembly.

  • Page 81: Removing Translator Platform

    Plasma Generation PlasmaQuant MS Series NOTE To replace the assembly, use the same procedures in reverse. 6.5.8 Removing Translator Platform This procedure describes how to remove and replace the translator platform assembly. Typically, the only time you will need to remove the translator platform is when you need to replace the X-axis stepper motor, the X-axis lead screw, or the Z-axis drive mechanism.
  • Page 82 Plasma Generation PlasmaQuant MS Series Figure 6-29 - Cables and water connections on back of RF Generator mounting plate 5. Using a 3 mm Allen key, loosen the hex screws securing the z-axis drive to the back platform rail. The screws can be accessed through the mesh below the RF enclosure filter assembly.

  • Page 83: Removing The X-Axis Drive Mechanism

    Plasma Generation PlasmaQuant MS Series Figure 6-30 - Bottom of translator platform NOTICE To replace translator platform, perform steps in reverse. When repositioning translator platform within RF compartment, ensure cables are not trapped between platform and z-axis rail. 6.5.9 Removing the X-axis drive mechanism This section provides information on how to remove the X-axis drive mechanism.

  • Page 84: Removing The Y-Axis Drive Mechanism

    Plasma Generation PlasmaQuant MS Series 3. Scribe a mark on the lead screw mounting bracket and the translator platform so you will be able to put the new lead screw in the same place as the one you remove (Figure 6-31). 4.

  • Page 85: Removing The Z-Axis Drive Mechanism

    Plasma Generation PlasmaQuant MS Series 5. Carefully lower the drive mechanism out of the RF enclosure. 6. When replacing the drive mechanism, be sure to extend the drive to about 50% of its overall range so the firmware can calibrate the opto circuitry to the home position during re-initialization.
  • Page 86 Plasma Generation PlasmaQuant MS Series inside the DC supply module. Field replacement is the only option. No RF calibrations are necessary to the RF generating system upon replacement. 1. Turn the instrument power switch off and disconnect the main power cable from the supply.

  • Page 87: Removing Igniter Assembly

    Plasma Generation PlasmaQuant MS Series Figure 6-35 - DC supply position in main RF assembly and 5 mounting screws securing DC supply to chassis 6. Carefully slide the supply forward to remove it from the instrument. 7. Replace the DC supply the reverse of removal. 6.5.13 Removing Igniter Assembly Refer to section 5.5.8, page 54 for instructions on removing igniter assembly.
  • Page 88 Plasma Generation PlasmaQuant MS Series Figure 6-36 - Horizontal, vertical and depth positions before translator calibration 4. Place the X-Y axis alignment tool (Figure 6-37) into the torch holder but do NOT close the clamp. Provide about a 2 mm clearance between the tip of the tool and the sampler cone.
  • Page 89 Plasma Generation PlasmaQuant MS Series Figure 6-39 - Properly calibrated translator showing 5 mm gap NOTICE NEVER press ”Save as calibration“ unless the z-axis alignment tool is properly positioned as given in step 7. If not, damage to the torch may occur.

  • Page 90: Vacuum System

    Vacuum System PlasmaQuant MS Series Vacuum System The mass spectrometer system operates within a vacuum due to the high voltages applied to the mass spectrometer, and to minimize ion losses due to ion collisions with any background atmosphere in the system. This chapter describes the operation and maintenance of the instrument vacuum system.
  • Page 91 Vacuum System PlasmaQuant MS Series Figure 7-2 - Vacuum housing and interface assemblies. VC1 is the volume between the sampler cone and the skimmer cone, and forms part of the interface assembly. When the gate valve is closed, VC1 is isolated from the other two vacuum chambers.
  • Page 92 Vacuum System PlasmaQuant MS Series Figure 7-4 - Visible skimmer cone with sampler cone removed A Leybold SV40 BI rotary pump (RP) maintains a pressure of approximately 4 Torr (5.33 mbar) in VC1 while the plasma is on and the gate valve is open. This chamber interfaces with the plasma by the sampler cone orifice of approximately 1 mm diameter.

  • Page 93: Theory Of Operation

    Vacuum System PlasmaQuant MS Series The following are the vacuum chamber pressures while the plasma is on and the gate valve is open:  VC1 – 4 Torr  VC2 – <4x10 Torr (base pressure achievable ~ 1x10 Torr)  VC3 – <1x10 Torr (base pressure achievable ~ 1x10 Torr) Theory of Operation...

  • Page 94: Table 11 - Vacuum Gauge Trip Points

    Vacuum System PlasmaQuant MS Series 6. Wait for G1 trip point of 1.0 torr. 7. Start turbo pumps 1 and 2. 8. Wait for GMain trip point of 0.2 torr and enable G2. 9. If G2 is installed, wait for G2 high trip point of 2 x 10-4 Torr. If G2 is not installed, wait for GMain trip point of 1 x 10-3 Torr.

  • Page 95: Vacuum System Monitor Sequence

    Vacuum System PlasmaQuant MS Series At this point, the vacuum startup sequence has completed. The vacuum system will remain in this condition (vacuum system standby) until an analysis / scan is initiated. Upon initiation of an analysis / scan, the small and large isolation valves will open to allow VC1 to be pumped down.

  • Page 96: Vacuum System Shutdown Sequence

    Vacuum System PlasmaQuant MS Series valve is open, and < 0.5 torr if in iCRC mode. When not in standby mode, turbo frequency must be ≥ 998 Hz. When in standby mode, turbo frequency must be ≥ 664 Hz. If any of the above criteria are not satisfied, an error is flagged and the vacuum shut down sequence is initiated.

  • Page 97: Vacuum Vent Device

    Vacuum System PlasmaQuant MS Series 5. Shut down both turbo pumps (SV40 roughing pump stays on to prevent shock to turbo blades). 6. Drive the translator to the closest position relative to the sampler cone. 7. Enable 10.5 L/min of plasma gas flow. 8.

  • Page 98: The Thermocouple Gauge

    Vacuum System PlasmaQuant MS Series power fails, or if the instrument gas pressure switch detects insufficient gas pressure, the vent device will open. The vent device is located for some early delivered instruments on the front side of the vacuum interface assembly or on the Turbo1 as shown in the above picture and controlled directly by the system control PCB.

  • Page 99: The Penning Vacuum Gauge

    Vacuum System PlasmaQuant MS Series Figure 7-9 – The Thermocouple Gauge 7.2.6 The Penning Vacuum Gauge The Penning vacuum gauge is an OEM unit manufactured by LEYBOLD INFICON, Germany. The Penning transmitter PTR 225 S is a compact, active pressure converter that houses a PENNINGVAC measurement system as well as the corresponding operating electronics.

  • Page 100: Thermovac Transmitter (Gmain)

    Vacuum System PlasmaQuant MS Series The electrical connection is provided through a screened 8-way RJ45 connector. The Penning vacuum gauge supplies a logarithmic representation of the vacuum pressure via a voltage signal that ranges from 1.66 V to 10 V at Pin 3 with reference to Pin 5, which is signal ground.
  • Page 101 Vacuum System PlasmaQuant MS Series The transmitter is factory calibrated. Due to long time operation or contamination, a Adjusting the Transmitter zero drift could occur. Periodically check the zero and adjust it if necessary. For adjusting the zero, operate the transmitter under the same ambient conditions and in the same mounting orientation as normally.

  • Page 102: Turbo-Molecular Pumps Turbo1 And Turbo2

    Vacuum System PlasmaQuant MS Series 1. Vent the vacuum system. 2. Turn the transmitter off. 3. Unplug the sensor cable. 4. Remove the transmitter from the vacuum system and install the protective lid. In case of severe contamination or a malfunction, the sensor can be replaced. Maintenance, Repair Transmitter failures due to contamination are not covered by the warranty.

  • Page 103: Safety And Operational Information

    Vacuum System PlasmaQuant MS Series Safety and Operational Information You must use the methods described in this section when servicing the vacuum system. Failure to do so may result in permanent damage to the instrument or exposure of personnel to potentially dangerous situations. ...
  • Page 104 Vacuum System PlasmaQuant MS Series Base pressure 4 x 10 Torr Compression ratio >10 He > 2 x 10 = 9 x 10 Startup time 300 seconds Operating voltage 24 VAC ± 5%—3 phase Operating frequency 1000 Hz ± 2% Operating temperature 20 ±...

  • Page 105: Table 12 - Vacuum Chamber Specifications

    Vacuum System PlasmaQuant MS Series Thermocouple Gauge (G1) Model Agilent Technologies 531 Range 1 x 10 Torr to 2 Torr (1 x 10 mbar to 2.7 mbar) Response Time Approximately 3 seconds, 1x10 Torr to 2 Torr (1x10 mbar to 2.7 mbar) Output 0-11 mv, with 165ma heater current and 15 ohms load...

  • Page 106: Maintenance

    Vacuum System PlasmaQuant MS Series Maintenance This section contains procedures for the access, removal, maintenance, and replacement of field serviceable components and assemblies of vacuum system. With all procedures, the instrument power must be off and the instrument should be in a safe condition.

  • Page 107: Removing Gate Valve Assembly And Gate Valve Piston Assembly

    Vacuum System PlasmaQuant MS Series 1. Unscrew the two M6 screws (upper left and lower right) on turbo1, and remove Removing Turbo1 the two screws securing the water cooling block to the turbo pump, and set the block aside (see Figure 7-12) 2.
  • Page 108 Vacuum System PlasmaQuant MS Series Before you begin: Removing Gate Valve Assembly Verify that the vacuum vent sequence is complete. The vacuum vent sequence takes approximately 6 minutes. It is important to allow the system to vent properly, because it will purge with argon. Turn the instrument power off. 1.

  • Page 109: Checking And Changing Oil In Rotary Pumps

    Vacuum System PlasmaQuant MS Series NOTICE To replace the assembly, use the same procedures in reverse. Inspect the condition of the O-ring between the second vacuum chamber, and the piston assembly. Replace if necessary. Verify all O-rings are correctly seated before refitting. 7.5.3 Checking and Changing Oil in Rotary Pumps Check the level of oil in the sight glass once each week.

  • Page 110: Maintaining Turbo-Molecular Pumps

    Vacuum System PlasmaQuant MS Series PQMS Rotary Vane Pump optimum oil level and color in SV 40 viewport remaining oil level after installation and filling of a new SV 40 pump Figure 7-16 - PQMS rotary vane pump oil change guide - 2 1.

  • Page 111: Removing Thermocouple Gauge Head (G1)

    Vacuum System PlasmaQuant MS Series 7.5.5 Removing Thermocouple Gauge Head (G1) 1. Vent the vacuum system, and shut off the instrument 2. Remove the front panel of the instrument. 3. Disconnect the cable from the thermocouple-gauge head. 4. Use a 9/16" wrench to remove the gauge head. NOTE Before fitting the new gauge head, apply a small amount of Loctite™...

  • Page 112: Mass Spectrometer

    Mass Spectrometer PlasmaQuant MS Series Mass Spectrometer Introduction The inductively coupled plasma mass spectrometer (ICP-MS) uses an ion mirror optics system and a quadrupole mass spectrometer to separate ions of a specific mass to charge ratio. A pre-scaling pulse electron multiplier detects ions after they exit the mass spectrometer.

  • Page 113: Theory Of Operation

    Mass Spectrometer PlasmaQuant MS Series The 5.5 kV required to drive the detector is generated on the Detector High Voltage Power Supply circuit board (DET HVPS PCB), located on the ion optics board, which is on the back of the PQMS . The High Voltage Power Supply circuit board (HVPS PCB) generates the power for the ion optics system.

  • Page 114: Interface Assembly

    Mass Spectrometer PlasmaQuant MS Series Figure 8-2 - The plasma is formed inside a quartz torch using single induction coil operating at a radio frequency of 27 MHz There is a significant electrical potential difference between the sampler cone at chassis earth or ground potential and the plasma operating at high voltages.
  • Page 115 Mass Spectrometer PlasmaQuant MS Series leaks. The second cone, called the “skimmer cone” is screwed directly into the skimmer base block. As the plasma emerges from the sampler cone, it undergoes an extremely rapid expansion and its temperature falls very quickly. A small fraction (around 1%) of the plasma passing through the sampler cone enters an orifice (0.5 mm in diameter) at the tip of the skimmer cone and passes into the second stage of the vacuum system.
  • Page 116 Mass Spectrometer PlasmaQuant MS Series Figure 8-4 - Vacuum page with plasma on and gate valve open At this pressure, ions can be guided by electrostatic fields generated by the ion optics. Neutral gas molecules, on the other hand, diffuse into the vacuum chamber and are pumped away.

  • Page 117: Ion Optics System

    Mass Spectrometer PlasmaQuant MS Series 8.3.3 Ion Optics System The ion lens system has two functions: It removes unwanted particles from the plasma as it emerges from the back of the skimmer cone, and focuses the ion beam into the mass spectrometer.
  • Page 118 Mass Spectrometer PlasmaQuant MS Series Figure 8-6 - Ion mirror assembly in VC2 Figure 8-7 - Ion mirror assembly in VC2 - cross section The physical configuration of the lens system components makes it possible to remove photons, solids and neutrals from the plasma. As photons and neutrals have no charge, their trajectory is uninfluenced by the electrostatic fields produced by the ion lenses and they do not reflect through the ninety-degree angle and enter the mass analyzer.
  • Page 119 Mass Spectrometer PlasmaQuant MS Series Figure 8-8 - Ion beam being directed by ion mirror assembly As the ion beam contains a wide range of masses, the voltages applied to the lenses affect different masses differently. For this reason, the operator can use the ion lenses to optimize the electrostatic field to provide conditions more favorable for some masses.
  • Page 120 Mass Spectrometer PlasmaQuant MS Series Figure 8-9 - Example of skimmer cone BOOST The skimmer cone is fitted into a BOOST adapter which is mounted within the copper interface. The adapter is secured using 4 screws, and electrically isolated from the interface using 4 ZrO washers and a 0.5 mm thick dielectric pad.
  • Page 121 Mass Spectrometer PlasmaQuant MS Series The function of the three extraction lenses is to gather the plasma from the rear of the The extraction lenses skimmer cone, accelerate it and direct it into the mirror lens. Approximately ninety percent of the ions formed in the plasma are lost as they pass through the skimmer cone therefore the extraction lens design is critical.
  • Page 122 Mass Spectrometer PlasmaQuant MS Series Figure 8-12 - Extraction lens removal tool Vacuum feedthroughs provide the DC connections to the extraction lenses. The circular shaped spring shims are connected to the appropriate feedthrough with an M2 screw. Take care when tightening the screws because the alumina is brittle. If the glue or the alumina breaks the vacuum system will leak and the entire feedthrough must be replaced.
  • Page 123 Mass Spectrometer PlasmaQuant MS Series The ring consists of four electrically conductive stainless steel segments mounted on a plastic frame. One of the segments is grounded (connected permanently to earth) and the voltage applied to each of the other segments is variable via the software. The combined effect of the voltage applied to the lens creates a positive parabolic shaped electrostatic field.
  • Page 124 Mass Spectrometer PlasmaQuant MS Series Figure 8-16 - The ion optics assembly is secured to the interface block with three screws. A series of gold plated spring loaded pins provide the electrical connections. The spring pins on the ion mirror assembly connect with the terminal block shown above.
  • Page 125 Mass Spectrometer PlasmaQuant MS Series Figure 8-17 - The corner electrode is mounted on a small PEEK bracket attached to extraction lens #3. Figure 8-18 - Section view of the cones, extraction lenses, the corner lens and the mirror lens There are two lenses positioned at the front of the mass analyzer assembly.
  • Page 126 Mass Spectrometer PlasmaQuant MS Series Figure 8-19 - The entrance lens and the entrance lens / plate removal tool The negative DC potentials applied to the entrance lens and plate control the geometry of the electrostatic field. As the ions enter the field they are accelerated past the entrance lens and plate and forced into the fringe filter assembly.
  • Page 127 Mass Spectrometer PlasmaQuant MS Series The exit plate orifice is positioned at the exit to, and on axis with the quadrupole. This Exit plate lens is connected to the mass analyzer chassis and maintained electrically at earth (ground) potential. The exit plate is an important component in creating the geometry of the electrostatic field at the exit to the quadrupole.

  • Page 128: Mass Analyzer Assembly

    Mass Spectrometer PlasmaQuant MS Series Under normal operating conditions, it is set to -580 V. However, in ‘protection mode’ the firmware applies +160 V. When the quadrupole scans over an isotope such as Ar, which exists in a high enough concentration to damage the detector, the firmware automatically sets the detector focus lens to ‘protection mode’...
  • Page 129 Mass Spectrometer PlasmaQuant MS Series set of very short quadrupole rods are positioned at the entrance to the quadrupole. This is known as the fringe filter. The fringe filter has two purposes, to provide the ions with a smooth passage into the quadrupole by removing the fringing fields and to guide the ions through a curved trajectory before entering the quadrupole.
  • Page 130 Mass Spectrometer PlasmaQuant MS Series One pair has the potential: P = U + V cos(2πft) The other pair has the potential: P = - [U + V cos(2πft)] Where U is a direct current potential and V cos(2πft) is the radio frequency potential of a constant frequency f and maximum amplitude V.
  • Page 131 Mass Spectrometer PlasmaQuant MS Series quadrupole control electronics module supplies the correct DC and radio frequency voltages to the rods in response to a signal from the system control PCB. The relationship between the control signal and the mass/charge ratio of the transmitted ions is calibrated with the aid of a reference solution containing isotopes of known mass.
  • Page 132 Mass Spectrometer PlasmaQuant MS Series The resolution is altered by changing the ratio of the DC potential U to the maximum RF potential V applied to the quadrupole. As the resolution improves, the efficiency of ion transmission decreases, so in practice resolution has to be traded for sensitivity. For any given quadrupole system, there is a resolution limit.

  • Page 133: Detector

    Mass Spectrometer PlasmaQuant MS Series 8.3.5 Detector The ion detector is a pre-scaling pulse counting electron multiplier. It is an OEM device produced by ETP Scientific. Figure 8-28 - The pre-scaling pulse counting detector allows analysis of a wide concentration of samples without having to manually dilute the samples.
  • Page 134 Mass Spectrometer PlasmaQuant MS Series pulse is directed into the pre-amplifier/discriminator module. The detector is capable of input ion rates in excess of 10E c/s. No sample dilution is required because the output count rate stays within 10E c/s therefore conventional pulse-counting electronics can be used.
  • Page 135 Mass Spectrometer PlasmaQuant MS Series Figure 8-31 - View of electron multiplier mounted on VC3 cover The pulses of electric current that result from the detection of ions by the electron Detection electronics multiplier pass into a pre-amplifier/discriminator module. This device produces an amplified output pulse for every input pulse above a certain pre-set threshold.
  • Page 136 Mass Spectrometer PlasmaQuant MS Series Provided the instrument vacuum system is clean and operating at the correct pressure the detector will age as a function of the quantity of ions detected. As the electron multiplier’s gain gradually starts to decrease a reduction in sensitivity, particularly at high mass will become evident.
  • Page 137 Mass Spectrometer PlasmaQuant MS Series firmware takes no action it simply does no monitoring after the 100 µS snapshot check in maximum attenuation mode. 3. PRE-AMPLIFIER: If the current out of the detector exceeds the threshold on the pre-amplifier/discriminator board, a hardware over range will be generated. This is usually due to excessive counts (more counts = more current from the detector).

  • Page 138: Cone Specifications

    Mass Spectrometer PlasmaQuant MS Series Use a detector attenuation calibration (normal sensitivity mode) worksheet. Two Performing a detector standard tune solutions are required, a 1 ppb Multi-element and a 50 ppb Multi- attenuation calibration element. Open the “Detector Attenuation Calibration.msws” worksheet and transfer the optimization conditions from an optimized “System Setup.msws”...

  • Page 139: Safety Information And Operational Tips

    Mass Spectrometer PlasmaQuant MS Series Figure 8-33- Sampler and skimmer cones Safety Information and Operational Tips Due to the high operating voltages of the detector and ion optics, ensure that the Detector safety spacing between wires exceeds 5mm to prevent arcing. Beware that the detector EHT operates at 5kV.
  • Page 140 Mass Spectrometer PlasmaQuant MS Series Ion optics elements Effect of lens on Effect of lens on Range Tips for the operator sensitivity in ppq mode sensitivity in ppb (Volts) mode (normal (high sensitivity) sensitivity) Extraction lens #3 Moderate Moderate -1000 to 0 Changes in extraction lens #3 will induce a need for a change in corner lens voltage in the...

  • Page 141: Table 14- Ion Optics Elements And Their Effects On Sensitivity

    Mass Spectrometer PlasmaQuant MS Series Ion optics elements Effect of lens on Effect of lens on Range Tips for the operator sensitivity in ppq mode sensitivity in ppb (Volts) mode (normal (high sensitivity) sensitivity) Mirror bottom Setting is typically within 100V segment of the left and right mirror Sharp...

  • Page 142: Maintenance

    Mass Spectrometer PlasmaQuant MS Series Maintenance This section includes instructions for cleaning components of the mass spectrometer system. A list of equipment required for the cleaning procedures is included below.  Stainless steel cleaning powder  Lint free gloves  Latex gloves ...
  • Page 143 Mass Spectrometer PlasmaQuant MS Series Remove the lenses from the instrument by following the procedure outlined in this Cleaning the lenses manual in section 8.7.4. and using the correct tool where applicable. The following lenses can be cleaned using this method: ...

  • Page 144: Removal And Replacement Procedures

    Mass Spectrometer PlasmaQuant MS Series 3. Wash the quadrupole under running distilled de-ionized water until all the detergent is removed. 4. Blow dry the quadrupole using argon or nitrogen. Do not use compressed air. Allow it to dry for as long as possible in a clean dust-free environment then re- assemble the mass analyzer.
  • Page 145 Mass Spectrometer PlasmaQuant MS Series 3. Rotate the tool anti-clockwise until the clamping plate comes away from the interface. At this point set the clamp and tool aside, take care not to allow the cone to fall out of the interface. 4.
  • Page 146 Mass Spectrometer PlasmaQuant MS Series Figure 8-36 - Sampler cone Tools required: Skimmer Cone  Skimmer Cone Removal Tool In order to remove the skimmer cone, the sampler cone must be removed. See steps Skimmer Cone Removal above for removing the sampler cone. 1.

  • Page 147: Detector Assembly

    Mass Spectrometer PlasmaQuant MS Series Figure 8-37 - Removing the skimmer cone using the skimmer cone removal tool 8.7.2 Detector Assembly 1. Vent the vacuum. Detector Assembly Removal 2. Turn off the instrument power. 3. Remove the front cover. 4. Disconnect the HV detector supply loom, located below the Discriminator/Attenuator as a twist lock connection.
  • Page 148 Mass Spectrometer PlasmaQuant MS Series Figure 8-38 - The detector is mounted on a self-aligning bracket which is fixed to a plate. The plate forms part of the top of the vacuum housing. This entire assembly must be removed before removing the mass analyzer assembly With the detector assembly removed you can access and replace the detector.
  • Page 149 Mass Spectrometer PlasmaQuant MS Series This procedure is typically done while the Detector Assembly is still attached to VC3 for Attenuator/Discriminator easier access. Removal and Replacement 1. Vent the vacuum. 2. Turn off the instrument power. 3. Remove the front cover. 4.

  • Page 150: Mass Analyzer Assembly

    Mass Spectrometer PlasmaQuant MS Series 8.7.3 Mass analyzer Assembly Figure 8-39 - Mass analyzer assembly exploded diagram 1. Vent the vacuum. Mass Analyzer Assembly Removal and 2. Turn off the instrument power. Replacement 3. Remove the front and top covers as well as the top plate covering the analyzer assembly.
  • Page 151 Mass Spectrometer PlasmaQuant MS Series NOTE Further cleaning of the mass analyzer assembly is not recommended in the field yet possible. Procedures for this cleaning will be posted is supplemental documents. Figure 8-40 - View of the vacuum housing from the quad flange Figure 8-41 - Front view of VC3 with the detector plate removed...

  • Page 152: Ion Lens System

    Mass Spectrometer PlasmaQuant MS Series 8.7.4 Ion Lens System Tools required:  Entrance lens/plate tool (supplied with the instrument)  Extraction lens tool (supplied with the instrument)  Sampler cone tool  Skimmer cone tool 1. Vent the vacuum system Removing Ion Mirror assembly 2.
  • Page 153 Mass Spectrometer PlasmaQuant MS Series 1. Remove corner mirror from pillars on extraction lens#3. Remove the two plastic Disassembly of the ion tubes on the pillars and the small plastic insulator from extraction lens#3. Leave mirror corner mirror attached to supply wire. 2.
  • Page 154 Mass Spectrometer PlasmaQuant MS Series Figure 8-44 - Removing extraction lenses using extraction lens tool 1. Vent the vacuum system. Entrance Lens and entrance plate 2. Remove the ion mirror assembly. 3. Insert the appropriate tool into the lens. 4. Rotate the lens in either direction until the tabs line up with the recesses in the holder and remove the lens.
  • Page 155 Mass Spectrometer PlasmaQuant MS Series Figure 8-45 - Entrance lens and entrance plate removal tool...

  • Page 156: Quadrupole Controller

    Quadrupole Controller PlasmaQuant MS Series Quadrupole Controller This chapter describes the operation and maintenance of the quadrupole-controller module. NOTICE There are no field serviceable components within the quadrupole controller. It is fitted with tamper-proof screws and should not be opened outside the Analytik Jena factory.

  • Page 157: Quadrupole Dc Power Supplies

    Quadrupole Controller PlasmaQuant MS Series Figure 9-2 - Quadrupole controller block diagram 9.1.2 Quadrupole DC Power Supplies The power-supply system consists of two switch-mode, power-supply PCBs.  The 300 W primary supply – an OEM PCB, generates two +48 VDC supplies from the 240 VAC mains input.

  • Page 158: Quadrupole Controller Cooling

    Quadrupole Controller PlasmaQuant MS Series 9.1.3 Quadrupole Controller Cooling The controller contains two +24 VDC cooling fans. One provides cooling for the RF output transformer and the other for the switching supplies. The +24 V supply is not directly regulated. It is taken from a separate transformer winding to avoid coupling from the fan commutator.

  • Page 159: Rf Power Amplifier Pcb

    Quadrupole Controller PlasmaQuant MS Series 9.1.8 RF Power Amplifier PCB The RF power amplifier is mounted on a heat sink located on the quadrupole controller back-panel. This circuitry amplifies the RF signal produced by the modulator. It is a push-pull type amplifier delivering about 400 V (peak-to-peak voltage) to the air-core transformer, which is the main output matching device.

  • Page 160: Power Supply

    Quadrupole Controller PlasmaQuant MS Series The DC control signal is processed entirely on the control PCB and converted into a HV DC signal before being applied to the quadrupole-controller output terminals by the modulator PCB. The control PCB processes the RF control signal and sends it to the modulator PCB where it is converted from a DC signal to a small-amplitude RF signal crystal locked at 3 MHz.

  • Page 161: Rf Servo-Loop

    Quadrupole Controller PlasmaQuant MS Series 9.2.3 RF Servo-loop The RF command voltage is taken to the inputs of the differential buffer formed around U401. The RF detector output is fed to the input of the trans-impedance amplifier, U403, by VHF chokes L401 and L402. U402 forms an error amplifier with frequency compensation.

  • Page 162: Rf Detector

    Quadrupole Controller PlasmaQuant MS Series 9.2.6 RF Detector This is an oven-controlled, full-wave, voltage-to-current converter with porcelain capacitors (C1, C2, C3 and C4) acting as constant impedance across the high-voltage RF output. The oven is elevated to a temperature above 50ºC. R3 is the main heating element of the oven and U1 provides series control to the heater.

  • Page 163: Specifications

    Quadrupole Controller PlasmaQuant MS Series High DC voltage (>48 V) may remain for up to two minutes even after the power supply to the unit is switched off. External bleeding may be necessary if accelerated discharge is required. The heating element in the RF detector oven can reach temperatures up to 100ºC; therefore, the detector is both electrically and thermally ‘hot’.

  • Page 164: Maintenance

    Quadrupole Controller PlasmaQuant MS Series Maintenance This section contains procedures for the access, removal, and replacement of field serviceable components and assemblies of the quadrupole controller. With all procedures, the instrument power must be off and the instrument should be in a safe condition.
  • Page 165 Quadrupole Controller PlasmaQuant MS Series Figure 9-4 - Screws securing quadrupole controller to chassis 6. Slightly slide the quadrupole controller up such that the heat exchange fins rest on the lower chassis frame. 7. Disconnect the main power cable from the bottom of the quadrupole controller. 8.
  • Page 166 Quadrupole Controller PlasmaQuant MS Series Figure 9-6 - Connections at bottom of quadrupole controller Figure 9-7 - 9 pin D range connector for quadrupole controller 10. Now you can slide the entire quadrupole controller out the top of the chassis. 11.

  • Page 167: Quadrupole Control Drive Looms

    Quadrupole Controller PlasmaQuant MS Series 9.3.2 Quadrupole Control Drive Looms To remove the quadrupole drive looms the coaxial cable core must firstly be released from the feedthroughs. The cable conductors are fixed to the feedthroughs inside the terminal block and cannot be removed by loosening the N-type connectors 1.
  • Page 168 Quadrupole Controller PlasmaQuant MS Series NOTICE There is limited space between behind the VC3 and the instrument chassis. Take care not to damage the ceramic feedthroughs when removing. 8. Disconnect the quadrupole feedthroughs from the quadrupole controller as per section 9.3.1, page 164. Figure 9-10 - View of the quadrupole drive looms from under the vacuum housing Figure 9-11 - The quadrupole drive looms Figure 9-12 - The quadrupole drive vacuum feedthroughs...

  • Page 169: Setting Rest Mass

    Quadrupole Controller PlasmaQuant MS Series so that they do not have to be configured in the field. Disassembly may damage the internal O-rings and could induce a vacuum leak. 9.3.3 Setting Rest Mass The rest mass sets the quadrupole controller output when it is not scanning. The default rest mass is 145.5 AMU.
  • Page 170 Quadrupole Controller PlasmaQuant MS Series NOTE The procedure outlined below provides systematic instructions for performing the quadrupole resonation calibration. The resonation procedure also includes a check of the quadrupole controller’s SWR and RF failure-error electronics.  DC Voltmeter capable of 0 to10 V with two clip-style probes Tools required: ...
  • Page 171 Quadrupole Controller PlasmaQuant MS Series NOTE With the gate valve closed, the plasma can be either ‘on’ or ‘off’ as it will not affect the resonation process. 2. Disable the quadrupole controller by the ion optics page of the Aspect MS diagnostics software (Figure 9-15).
  • Page 172 Quadrupole Controller PlasmaQuant MS Series 1. Disable the quadrupole controller via the Aspect MS diagnostics software. To reconfigure the system for normal 2. Disconnect the voltmeter from the quadrupole controller. operation: 3. Toggle the switch, SW402, to the operate position. The switch is in the operate position when it is toggled upwards or closest to the DIP switch, SW401.

  • Page 173: Electronics

    Electronics PlasmaQuant MS Series Electronics 10.1 Introduction A circuit description for the system control PCB and the sample introduction interface PCB are contained in the theory of operation section. Circuit diagrams for all instrument PCB assemblies are contained in Schematics. 10.2 System description The instrument electronics system is described below in six functional blocks.

  • Page 174: Vacuum System Functionality

    Electronics PlasmaQuant MS Series  The Electrical box module (10-5-01200004700 / new: 10-5100-300-14) contains two switch mode power supply PCB's. They generate the +24 V, +15 V, -15 V and +5 V supplies from a 240 V input.  The Utility box (10-5-0220003800 / new: 10-5100-200-14) is factory configured as a single phase module.
  • Page 175 Electronics PlasmaQuant MS Series  It is labeled as G2 and is optional for service. The Penning vacuum gauge: Figure 10-2 - Penning vacuum gauge (G2)  The loom, connected directly to the system control PCB also facilitates a spare gauge, can be fitted to VC2 or VC3 for diagnostic purposes such as leak checking.

  • Page 176: Plasma System Functionality

    Electronics PlasmaQuant MS Series Figure 10-4 - Vacuum vent device  The vent device and the thermocouple gauge (G1) share the same loom from the systems control PCB (P11).  Is connected to the system control PCB via a single 22-way ribbon cable. AC input module: ...
  • Page 177 Electronics PlasmaQuant MS Series Figure 10-5 - RF generating system block diagram  The power and drive signal for the translator stepper motors are provided by the The Translator Filter PCB. mechanism  The System Control PCB is interfaced via Filter PCB. ...

  • Page 178: Ion Signal Control And Processing

    Electronics PlasmaQuant MS Series contains back-EMF protection to prevent damage to the system control PCB. No feedback on plasma or auxiliary gas flows is provided.  An optical fiber carries light from the plasma compartment directly to the optical Plasma sensor: sensor on the system control PCB.

  • Page 179: Communication Functionality

    Electronics PlasmaQuant MS Series  Three custom made high vacuum HV feedthroughs provide an interface for the two EHT supplies and the dilutor supply to enter the vacuum chamber. The EHT and the attenuator output connectors on the attenuator control PCB mate directly with the three high vacuum HV connectors fixed to the vacuum chamber detector panel.

  • Page 180: Instrument Power Supplies

    Electronics PlasmaQuant MS Series The Analytik Jena ASPQ 3300 autosampler accessory is compatible with the ICPMS and communicates with the PC using an RS232 interface. 10.2.6 Instrument Power Supplies The mains input module is located in the bottom rear of the instrument. The single phase module contains two circuit breakers (1x instrument, 1x Rotary pump).
  • Page 181 Electronics PlasmaQuant MS Series  Two micro switches fitted to VC2 prevent the operator from enabling the ion optics or opening the gate valve. They are attached to the interface assembly and activated by contact with the turbo1 high vacuum flange. ...

  • Page 182: Theory Of Operation

    Electronics PlasmaQuant MS Series The plasma extraction fan flow sensor is mounted on top of the RF enclosure. The sensor is interfaced directly to the system control PCB. It contains two board mounted thermistors, one is in contact with the exhaust airflow and the other functions as a reference.

  • Page 183: Amplifier/Discriminator Pcb

    Electronics PlasmaQuant MS Series  Send the requested Peltier temperature (for the cooled spray chamber) and the peristaltic pump speed to the sample introduction board by an 8-bit DAC.  Send the requested pole bias by an 8-bit DAC, and both the RF and DC values for the quadrupole by a 16-bit DACV to the quadrupole controller.

  • Page 184: Sample Introduction Interconnect Pcb

    Electronics PlasmaQuant MS Series NOTE The correct threshold cannot be set just by winding the trim-pot a certain number of turns from its end stop. The op-amp output offset voltage = input offset voltage (+/- 1.8 mV maximum) x gain (20). This means the op-amp output offset voltage could be as low as -36 mV and as high as +36 mV, although it is typically +/-5 mV the threshold must always be set above the op-amp offset voltage, usually ~6-7 mV above.
  • Page 185 Electronics PlasmaQuant MS Series The PCB mounts in the gas box of the instrument. A polycarbonate insulator is situated Insulator between the PCB and the sheet-metal side of the gas box. Always ensure that the polycarbonate insulator is fitted when installing the PCB. Several devices on the PCB require heatsinking.
  • Page 186 Electronics PlasmaQuant MS Series The 36 kHz clock time output is a saw tooth waveform that provides the input at U5 pin 1. The active low signal triggers the analog switch at a 36 kHz rate, placing 12 V pulses at U5 pin 3. Each clock pulse triggers U6 pin 1, a dual decade binary coded decimal (BCD) counter.
  • Page 187 Electronics PlasmaQuant MS Series to efficiently regulate the required voltage. Temperature control is accomplished by a firmware-implemented control loop. Its input is from a thermistor on the spray chamber (see later for circuit description). Switching regulator U1 is a 260 kHz buck converter that switches the incoming 24V down to the voltage required by the Peltier by varying the duty cycle of its internal switch.

  • Page 188: Safety Information And Operational Tips

    Electronics PlasmaQuant MS Series switch U13. The firmware pulses this line very quickly, reads the voltage and then restores the enable line. The high speed of this action does not result in relay K1 dropping out. Resistors R67/R68/R71 are useful for determining fault conditions on the spray Fault condition chamber cable.

  • Page 189: Power Supply

    Power Supply PlasmaQuant MS Series Power Supply 11.1 Introduction This chapter contains circuit descriptions relating to the power supply PCB’s used in the ICPMS. For circuit diagrams relating to the Analytik Jena designed circuitry refer to the relevant section of the Schematics manual. WARNING Never override or disable the instrument interlocks.

  • Page 190: Quadrupole Controller

    Power Supply PlasmaQuant MS Series Figure 11-1 - The instrument card cage contains the system control PCB and the ion optics power supply Test points for the ion optics supplies are accessible by holes in the protective cover. A standard multimeter probe should make contact with the test point pads. The test point voltages have been divided (1/1000 ratio) to levels less than 1000 V where appropriate.

  • Page 191: Rf Generator

    Power Supply PlasmaQuant MS Series Figure 11-2 The electrical box module is located in the upper left corner of the instrument chassis, next to the iCRC box Figure 11-3 - Inside the electrical box module 11.2.4 RF Generator The RF generator is manufactured by Analytik Jena. This unit is responsible for generating the RF power required for the instrument plasma system.

  • Page 192: Theory Of Operation

    Power Supply PlasmaQuant MS Series Figure 11-4 - Mains utility module 11.3 Theory of Operation Ion Optics High Voltage Power Supply is responsible for generating the power supplies for all 11 ion optics lenses. 11.3.1 Ion Optics & Detector supply PCB Most of the voltages on this board are potentially dangerous and appropriate Safety warning attention is required during handling and examination.
  • Page 193 Power Supply PlasmaQuant MS Series The purpose of the HV power supply is to provide biasing voltages for the Ion Optics Introduction electrodes. The voltages are individually adjustable within a range specific for each electrode. The power supply outputs are controlled from the CPU board via a serial interface with a proprietary protocol, which is very similar to SPI.
  • Page 194 Power Supply PlasmaQuant MS Series control, they only indicate abnormal states on the outputs which cannot be corrected by the controllers. If an error flag is asserted, most likely the instrument will need to be stopped and cause of the error investigated. Each voltage regulator is powered by a pair of voltage rails, so that its output can be set to a selected DC value between the rails.

  • Page 195: Table 16 - Assignment Of Bits Sent To The Cpu Board

    Power Supply PlasmaQuant MS Series A data packet with the status flags sent to the CPU board is 16bit long, each bit indicating status of a particular output channel (11 for the Ion Optics supplies and 2 for the detector supplies), plus additional 3 diagnostic bits for fault finding. Table 16 shows assignment of the bits, starting from the MSB which is clocked out first.
  • Page 196 Power Supply PlasmaQuant MS Series For example, the extraction lens E1 regulator has the nominal range of 0 to -1 kV, but under some single fault conditions its output may be stuck to either +55 V positive rail or -1.2 kV negative rail. The actual voltage range may slightly exceed the nominal range, but by no more than a few volts under correct operation.

  • Page 197: Testing And Servicing

    Power Supply PlasmaQuant MS Series Electrode/lens Range Adjustment Ripple Nominal Settling Detector current times protection Mirror ml 0 →+400V 125mV 10uA ≥35ms ±5mV Mirror mr 0 →+400V 125mV 10uA ≥35ms ±5mV Mirror mb 0 →+400V 125mV 10uA ≥35ms ±5mV Entrance lens EL -10V →...

  • Page 198: Testing At The Board Level

    Power Supply PlasmaQuant MS Series 11.4.1 Testing at the Board Level Testing at the board level, is mainly envisaged for servicing at the customer site, where testing and servicing are likely to be restricted by the site features, tools and instruments carried by a service engineer.

  • Page 199: Table 18 - Led Summary On Ion Optics And Hv Supply Board

    Power Supply PlasmaQuant MS Series  During normal fault free operation it may be permanently ON, OFF or dimmed (refer to “Interface to CPU board” for details).  Connectors, wires and cables: Connectors should be inspected for proper engagement. Be sure to check that the wires from the Detector Focus Protection daughter board are securely soldered to the main board and not accidentally shorting to any surrounding components.
  • Page 200 Power Supply PlasmaQuant MS Series The board uses two external power supplies Power supplies  24 VDC and  ±15 VDC Each voltage rail has an associated LED which is illuminated if the power supply is OK (see Table 2 for details). An on-board relay is used to connect +24 V supply to the rest of the board, enabled by the interlock circuit and controlled from the CPU board.
  • Page 201 Power Supply PlasmaQuant MS Series Assuming that the CPU board is working correctly (including its interface Tx section), the next step is to check the diagnostic LEDs on both boards while the test software and firmware are running. The following are the basic test guidelines: ...

  • Page 202: Specifications

    Power Supply PlasmaQuant MS Series  the output is overloaded (caused by faults in the output wiring or on the electrodes, such as: two or more electrodes of the ion optics are short connected, a short connection to GND and insufficient clearances act as spark-gaps). In either case, the ion optics should be disconnected and the measurement repeated.

  • Page 203: Troubleshooting

    Troubleshooting PlasmaQuant MS Series Troubleshooting In order to successfully develop a comprehensive procedure for diagnosis and repair of the PQMS product line, a separate manual has been developed specifically for troubleshooting. Due to being a relatively new product it is expected that the “troubleshooting guide“...

  • Page 204: Schematics

    Schematics PlasmaQuant MS Series Schematics The schematics for the PQMS and its sub-assemblies are located on the extranet. It is required that only senior regional engineers access these documents in order to insure both safe troubleshooting practices are strictly adhered to, and that security of the documents is maintained.

  • Page 205: Parts And Equipment

    Parts and Equipment PlasmaQuant MS Series Parts and Equipment This chapter lists the recommended parts and calibration equipment needed to service and repair the ICP-MS in the field. In cases where a required piece of equipment is not available from the factory, this chapter provides full specifications so you can source the item locally.

  • Page 206: Recommended Spare Parts List

    Parts and Equipment PlasmaQuant MS Series 14.2 Recommended Spare Parts List Pos. AJ Number Description 10-5100-600-14 Assy Quad Controller 10-5100-401-83 Ion Optics High Voltage Power Supply 10-5500-200-14 Interface Complete 10-5300-060-27 HF- Generator 10-405-208 Redline Power Supply 10-5-0110760700 Assy Attenuator PWB 10-5500-164-83 Assy Discriminator PWB 10-5100-821-91...
  • Page 207 Parts and Equipment PlasmaQuant MS Series Pos. AJ Number Description 10-5000-231-11 Vent Valve (on Turbo Pump) 10-5300-008-12 Plasma Coil 10-405-807 Peltier Element Spray Chamber 10-405-808 Thermistor Spray Chamber 10-5000-040-14 Spray Chamber Lower Part (Peltier) 10-5000-041-14 Spray Chamber Upper Part 10-5000-047-10 Knurled screw 10-5000-50-14 Spray Chamber Holder...
  • Page 208 Parts and Equipment PlasmaQuant MS Series Pos. AJ Number Description ASSY FAN CHASSIS 24VDC 120X38 –two large fan´s at the 10-5200-050-96 bottom left of the casing 10-5100-600-96 Assy Fan 24 VDC – fan´s for the electrical box 10-406-061 Fuse Fast 15A 250V Midget 10-405-617 FUSE SLOW 250VAC 1A 5X20 - Littelfuse 0215001.HXP 10-5-7920000400...
  • Page 209 Parts and Equipment PlasmaQuant MS Series Pos. AJ Number Description 10-5-0120007900 Assy Loom Ion Optics DC Supply 10-5-0120008800 Assy Loom Instrument Temperature Sensor 10-5-0120009000 Assy Loom Detector Control 10-5-0120009100 Assy Loom Mirror ,E1, E2, E3 Supplies 10-5-0120009200 Assy Loom Quad Interface 10-5-0120009500 Assy Loom Interlocks 10-5-0120009700...
  • Page 210 Parts and Equipment PlasmaQuant MS Series Pos. AJ Number Description 10-5-0120017800 Assy Loom Kit Lower 10-5-0120017900 Assy Cable Mains ICP-MS (1PH) 10-5-0120018000 Assy Loom Large Isolation Valve 10-5-0120018200 Assy Loom 24VDC Chassis Fan 10-5-0120018500 Assy Loom Igniter, G-Valve & Peri Pump 10-5-0120018900 Assy Loom Switch Flow 10-5100-835-91...

  • Page 211: Maintenance Forms And Checklists

    Maintenance Forms and Checklists PlasmaQuant MS Series Maintenance Forms and Checklists This chapter contains the various forms and checklists that you will need to copy and complete to add to the logbook or to provide to the customer.  Routine Maintenance Schedule - The customer should have been provided this schedule when the instrument was installed.
  • Page 212 Maintenance Forms and Checklists PlasmaQuant MS Series Hourly Check the drain vessel waste level and empty, if necessary. Daily Clean the surface of the PQMS ICP-MS with a soft cloth. (Spills should be cleaned up immediately.) Aspirate de-ionized, distilled water at the end of each analysis. Inspect the pump tubing and replace it if it has lost its elasticity.

  • Page 213: Operator Checklist

    Maintenance Forms and Checklists PlasmaQuant MS Series 15.2 Operator Checklist Routine Maintenance – Operator Checklist Copy this page, complete the checklist and insert it into the instrument logbook. Check Component Action Frequency Torch Check for verification and surface coating Weekly or as required depending of sample or carbon.

  • Page 214: Preventative Maintenance Checklist

    Maintenance Forms and Checklists PlasmaQuant MS Series 15.3 Preventative Maintenance Checklist Customer Name: ________________________ Address: ______________________________ Instrument Serial#: ______________________ Date: ________________________________ Preventive Maintenance Checklist Tick (check) each box as the steps are completed. Parts required:  10-5000-220-20  418-10-406-251  418-13-410-540 Check Initial Performance Tests Print out Plasma Align (Time Scan mode) and Vacuum gate valve open...
  • Page 215 Maintenance Forms and Checklists PlasmaQuant MS Series Check Water Cooling System Drain water reservoir.  Clean pump strainer as needed  Clean air intake filters & heat exchange fins as needed  Inspect all water hoses for cracks/leaks.  Disassemble inline water filter & clean cartridge. ...
  • Page 216 Maintenance Forms and Checklists PlasmaQuant MS Series Check Instrument Condition Assess and comment on condition of ICP-MS system.  Discuss condition, preventative maintenance results and instrument  performance with the customer. Sign and date check-list after obtaining customer’s signature.  Instrument and environmental conditions ☐...

  • Page 217: Figures

    PlasmaQuant MS Series Figures and Tables Figures Figure 4-1 - Sample Introduction System ................ 22 Figure 4-2 - Standard Micro-mist Nebulizer (Part #: 418-88070-0) ......23 Figure 4-3 - 8c. The Peltier cooled glass Scott spray chamber 10-5000-040-00 8d. Spray chamber Endcap 10-5000-063-12 8e. Spray chamber Waste Tubing 10-5000-253-11 ................
  • Page 218 Figures and Tables PlasmaQuant MS Series Figure 6-6 - H-Bridge circuit used to create 27 MHz plasma ........63 Figure 6-7 - Water distribution manifold ................ 64 Figure 6-8 - Translator interwiring diagram ..............65 Figure 6-9 - Default ignition parameters ................ 67 Figure 6-10 - Cooling water enable box ................
  • Page 219 PlasmaQuant MS Series Figures and Tables Figure 8-1 - Entire vacuum/mass analyzer system ............113 Figure 8-2 - The plasma is formed inside a quartz torch using single induction coil operating at a radio frequency of 27 MHz ..........114 Figure 8-3 - Stages of the plasma as it enters VC1 and VC2 ........
  • Page 220 Figures and Tables PlasmaQuant MS Series Figure 8-32 - The amplifier/discriminator PCB is mounted on top of the dilutor PCB. They are separate modules..............137 Figure 8-33- Sampler and skimmer cones ..............139 Figure 8-34 - Sampler cone, sampler cone clamp and sampler cone removal tool ... 144 Figure 8-35 - Opening of main RF door ................

  • Page 221: Tables

    PlasmaQuant MS Series Figures and Tables Tables Table 1 - Information symbols ..................11 Table 2 - Resources and Contact Information ..............19 Table 3 - Solenoid valve functions within gas control assembly ........36 Table 4 - Sample introduction PCB diagnostic LED identification ......... 43 Table 5 - Instrument gas control specifications...............

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