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PICARRO G2108 User Manual

Analyzer for hcl
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G2108 Analyzer for HCl
User Manual
Picarro, Inc.
3105 Patrick Henry Drive
Santa Clara, CA 95054, USA
Tel: +1 408 962 3900
www.picarro.com
Document Number 40-0020 Rev. C

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Summary of Contents for PICARRO G2108

  • Page 1 G2108 Analyzer for HCl User Manual Picarro, Inc. 3105 Patrick Henry Drive Santa Clara, CA 95054, USA Tel: +1 408 962 3900 www.picarro.com Document Number 40-0020 Rev. C...
  • Page 2 NOTICES DISCLAIMER AND RESERVATION OF RIGHTS Picarro has prepared this manual solely for the information and use by its customers as a guide for the selection, installation, operation, and maintenance of the products described.
  • Page 3 Customer Service: Email: orders@picarro.com Phone: +1 408 962 3992 © 2020 Picarro, Inc. All rights reserved. 3105 Patrick Henry Drive Santa Clara, California, 95054USA Phone +1 408 962 3900 • Fax +1 408 962 3200 www.picarro.com Picarro G2108 Analyzer User Manual...

  • Page 4: Table Of Contents

    7.3 Setting Up a Monitor, Keyboard, and Mouse ......... 26 8. BASIC OPERATION 8.1 Startup ....................27 8.2 Shutdown Procedure ................29 8.3 In case of an Electrical Power Outage ..........30 9. LIST OF GUI FUNCTIONS 9.1 Additional Tools and Information ............31 Picarro G2108 Analyzer User Manual...
  • Page 5 12.4 User Interface Program “Freezes” and Does Not Update Graphs as Data are Collected ................... 42 13. SERVICE AND MAINTENANCE 13.1 Particulate Filter Replacement ............43 13.2 Cleaning ....................47 14. TRANSPORTATION AND STORAGE 14.1 Packing the Analyzer ................48 Picarro G2108 Analyzer User Manual...
  • Page 6 20.3 Setting Up Solenoid Valves ..............61 20.4 Setting Up Rotary Selector Valve ............61 20.5 Valve Sequencer Software ..............62 20.6 Configuring a Valve Sequence ............62 20.7 Loading and Running a Saved Sequence ........... 63 Picarro G2108 Analyzer User Manual...

  • Page 7: Introduction To Technology

    1. INTRODUCTION TO TECHNOLOGY Picarro analyzers use time-based, optical absorption spectroscopy of the target gases to determine concentration. They are based on wavelength-scanned cavity ring-down spectroscopy (WS-CRDS), a technology in which light re-circulates many times through the sample, creating a very long effective path length for the light to interact with the sample, thus, enabling excellent detection sensitivity in a compact and rugged instrument.

  • Page 8: Relating Ring-Down Time To Absorption Intensity

    A cavity containing gas that absorbs light will have a shorter ring-down time than an empty cavity. As the light circulates in a cavity with a gas sample, the molecular absorption by the gas results in a decrease of the light intensity. Picarro G2108 Analyzer User Manual...

  • Page 9: Converting Absorption Intensity To Concentration

    Determining absorption intensity at a specific wavelength requires comparing the ring-down time of an empty cavity to the ring-down time of a cavity that contains gas. Picarro instruments gather measurements from an “empty” cavity by switching the light to wavelengths that are not absorbed by the target molecules. The analyzer subsequently measures ring-down times at wavelengths that are absorbed by the target gas.

  • Page 10: Spectral Precision And High Sensitivity Measurements

    1.4 Spectral Precision and High Sensitivity Measurements Picarro analyzers contain two features that provide high spectral precision: • Proprietary wavelength monitor (WLM) that measures the absolute laser wavelength to a precision that is a few orders of magnitude narrower than the spectral linewidth: Picarro’s patented WLM measures absolute laser...
  • Page 11 For precise pressure control, the cavity pressure is monitored using a high-linearity pressure transducer. The system computer uses this pressure data in a feedback loop to control proportional valves that adjust the inlet and outlet gas flow of the cavity. Picarro G2108 Analyzer User Manual...

  • Page 12: Conventions

    LASER WARNING alerts you of a laser danger. WARNING CAUTION alerts you of a potential danger to equipment or to the user. CAUTION REMINDER is a helpful hint to procedures listed in the text. REMINDER Picarro G2108 Analyzer User Manual...

  • Page 13: Acronyms

    CRDS Cavity Ring-Down Spectroscopy Graphical User Interface centimeters millimeters ” (as in 1/4”) Inches Hydrogen Chloride Water Ammonia Carbon Dioxide Hotbox Warm box Parts Per Million Parts Per Billion ‰ per mil °C degrees Celsius Picarro G2108 Analyzer User Manual...

  • Page 14: Safety

    CE label. This CE label is located on the rear of the instrument. Using this analyzer in a manner not specified by Picarro may result in damage to the analyzer and render it unsafe to operate.

  • Page 15: Laser Safety

    Only operate or service this device in accordance with the instructions in this guide, and only open the device in an approved WARNING laser safe service area using appropriate laser-safety glasses. The following Laser Safety Label is affixed to the inside of the analyzer: Picarro G2108 Analyzer User Manual...
  • Page 16 Figure 4: Laser Safety Label Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. WARNING Picarro G2108 Analyzer User Manual...

  • Page 17: Unpacking The Analyzer

    If the equipment does appear to be damaged, photograph the damages and contact Picarro (email pictures if possible) as soon as possible. 5.2 Unpack the Shipping Boxes This section describes the contents of the shipping boxes: Inspect each item to ensure it is not damaged.
  • Page 18 Control Cable (1) For External Solenoid Valves Nut (1) and For connecting input line to analyzer INPUT Ferrules (2) Document Packet Includes this manual, certificate of compliance, and Windows License. USB Flash Drive Contains backup software. Picarro G2108 Analyzer User Manual...
  • Page 19 A/C Power A power cable with connectors appropriate to your Cable (1) country is provided. Vacuum Hose (1) Hose to connect the pump to the analyzer. Pump Manual (1) Detailed instructions for pump. Picarro G2108 Analyzer User Manual...

  • Page 20: Analyzer Overview

    6. ANALYZER OVERVIEW 6.1 Intended Use The G2108 Analyzer measures concentrations of HCl precisely using Picarro’s patented Cavity Ring-Down Spectroscopy (CRDS) technology. The analyzer can be deployed in a lab or in the field, allowing in-situ analysis for both trace and ambient amounts of HCl monitoring applications.

  • Page 21: Analyzer Specifications

    <375 W at start-up (Analyzer and Pump) Steady-state Power 120 W (Analyzer), 150 W (Pump) Steady-state operation Mains Supply Voltage ±10% of the nominal voltage Fluctuation Minimum Rated Circuit 10A @115VAC, Amperage 5A @230VAC Liquid Ingress Protection None Picarro G2108 Analyzer User Manual...

  • Page 22: Installation

    7. INSTALLATION This section describes the setup and installation of the Picarro Analyzer. Please read and understand this section thoroughly before proceeding with the installation. Using this analyzer in a manner not specified by Picarro may result in damage to the analyzer and render it unsafe to operate.

  • Page 23: Analyzer And Vacuum Setup

    3. Unpack the analyzer accessories. The Certificate of Compliance and USB drive should be stored in a safe place and may be required if you contact Picarro with questions about your analyzer. Picarro G2108 Analyzer User Manual...
  • Page 24 7. Connect the analyzer to a power source using the supplied AC power cable. Use the AC power cables supplied with the analyzer or a similarly rated cable. Check with Picarro technical support if you have questions about power cable replacement. An inadequately rated power cable can result CAUTION in equipment damage.

  • Page 25: Connecting To The Analyzer Inlet

    WARNING Making a new connection: When using new tubing, follow these steps. Place the two ferrules inside the nut as shown. Figure 7: Orientation of ferrules and Picarro G2108 Analyzer User Manual...

  • Page 26: Setting Up A Monitor, Keyboard, And Mouse

    3. Connect a monitor to one of the DVI monitor ports. The analyzer will detect the connection and adjust the resolution to match the monitor. 4. Connect the monitor to a power source. 5. Turn on power to the monitor. Picarro G2108 Analyzer User Manual...

  • Page 27: Basic Operation

    Desktop Icons: • Controller: Instrument diagnostics and service information • Picarro Mode Switcher: Restarts analyzer in different measurement mode. Most analyzer models are configured for one mode and may not include the Mode Switcher. (Figure 9). If the analyzer has multiple modes, this allows the user to switch between them easily.
  • Page 28 (when switching valves draw in ambient air from different heights) a separate software window (coordinator) is used to control the sample source and match the corresponding real time read out with the sample source. Depending on system configuration, coordinator programs may not be included. Picarro G2108 Analyzer User Manual...

  • Page 29: Shutdown Procedure

    A flow of clean, relatively dry gas should always be directed to the instrument for several minutes prior to shutting down. Trapping a high-moisture content gas sample in the cavity can cause CAUTION Picarro G2108 Analyzer User Manual...

  • Page 30: In Case Of An Electrical Power Outage

    If the power to the analyzer is cut-off for any reason, the analyzer will cease operation. However, when the power is reapplied, the analyzer will restart automatically. The Picarro software tools will also properly close out previous files and open new files for data collection so that previously collected data, instrument diagnostics, and other parameters recorded up to the time of power outage are retained.

  • Page 31: List Of Gui Functions

    9. LIST OF GUI FUNCTIONS 9.1 Additional Tools and Information The Picarro analyzer GUI has several other buttons and features as labelled in Figure 13. Figure 12: GUI Functions 9.2 Settings, Tools and Help Menus: Settings Menu Left clicking on the Settings menu pulls down a menu that has one entry ‘Change GUI Mode from Standard to Service’.

  • Page 32: Alarm Panel

    3. Show/hide instrument status: Toggles the instruments status display. See ‘Instrument Status’, below. Tools Menu This menu item has three entries: 1. User Calibration: Opens the user calibration window (default password is “picarro”). The password can be reset in the QuickGui.ini “C:\Picarro\G2000\AppConfig file instrument directory: \Config\QuickGUI\”...

  • Page 33: Digital Readouts

    Press this button if you would like the instrument to start recording a separate data file. A dialog box will appear prompting you for a filename and location. Press this button again to stop recording the data file. Picarro G2108 Analyzer User Manual...

  • Page 34: Data Log Filename And Path

    0 and 4 digits of precision or “auto”. The currently selected precision is displayed during operation. This does not affect the precision of the saved data in the data log files or results files. Picarro G2108 Analyzer User Manual...

  • Page 35: Status Log Window

    To zoom back out, double click on the left button. To autoscale the y- axis of either graph, use the autoscale buttons below the graph. To lock or unlock the time axes of each graph during zooming, select that menu item in the ‘View’ menu. Picarro G2108 Analyzer User Manual...

  • Page 36: File Management

    C:\Picarro\G2000\Log\Archive\ and has subdirectories DataLog_Mailbox, DataLog_Private and DataLog_EventLogs with files arranged by year\month\day\hour. There are more complete data files which include additional information beyond the concentration data including parameters such as instrument temperatures and pressure, setpoints and Picarro G2108 Analyzer User Manual...

  • Page 37: File Archival And Automatic Deletion Of Old Files

    DataLog_Private in the C:\UserData DataLog files, please contact Picarro. The current data file can be found in C:\Picarro\G2000\Log\DataLogger\. Within this directory, there are subdirectories for DataLog_Private, DataLog_User_Raw and DataLog_User_Sync. Similarly, the archive directory has subdirectories arranged by file type. The subdirectories are further organized by \[year]\[month]\[day]\[hour].

  • Page 38: Setup Tool

    Specifies how long to keep files prior to deletion. 10.3 Setup Tool In the desktop folder called Picarro Utilities, the Setup Tool can be launched by double clicking on its icon. The tool allows the user to configure data file saving details, including which data elements are written to data files, digital data output (via serial port or TCP/IP), remote data delivery (via email), and general GUI properties.

  • Page 39: Calibration

    11. CALIBRATION Since the Picarro Analyzer is extremely linear, it is only necessary to use three calibration standards to calibrate each gas species (two points define the calibration line and a third intermediate point is used for verification). The exact value of each calibration standard is not of particular importance as long as they span a representative range of values over which the analyzer will typically be operated.
  • Page 40 Calibration values are input into the software by selecting the “User Calibration” from the Tools menu and entering the slope and intercept for each species. This is a password-protected function, with the default password “picarro” and can be changed by modifying an *.ini file as previously described. After the calibration is entered, it will take effect immediately after clicking “ok.”...

  • Page 41: Troubleshooting

    The corresponding step-by-step procedures provide resolution in most cases. If, after attempting these procedures, the problem remains unresolved, please contact Picarro Customer Service at (408) 962-3900 or techsupport@picarro.com. 12.1 Power LED on Analyzer Does Not Illuminate Context: Turning on the analyzer by momentarily depressing its front panel power switch should apply power.

  • Page 42: Sample Pressure Cannot Be Controlled To The Appropriate Value For Concentration Measurements

    If the computer does not respond to the mouse, hold down the power switch on the front panel for a few seconds until the computer and the instrument turn off. After another few seconds, restart the analyzer by momentarily depressing the power button. Picarro G2108 Analyzer User Manual...

  • Page 43: Service And Maintenance

    13. SERVICE AND MAINTENANCE The advanced, rugged design of the Picarro Analyzers provides stable, long-term operation with minimal service or maintenance. With the exception of the particulate filter, the analyzer is not user serviceable. Should it appear to malfunction, please refer to the Troubleshooting Guide or contact Picarro.
  • Page 44 Figure 16: Bulkhead Retaining Nut Foam Retaining loosened covering filter 4. Slide the filter cover (with foam on top and side) towards the right side of the analyzer to remove it. Picarro G2108 Analyzer User Manual...
  • Page 45 Filter Cover Removed Loosen here. this nut 6. Slide the filter and bulkhead slightly towards the back of the analyzer and lift out. Figure 18: Filter and Bulkhead Slid Slightly Towards Back of DAS Picarro G2108 Analyzer User Manual...
  • Page 46 The arrow on the filter needs to point away from the bulkhead fitting. 10. Using the 9/16” and 11/16” wrenches, reposition the filter and bulkhead fitting, and reattach to the tube section. Figure 20: New Filter Attached to Bulkhead Fitting Picarro G2108 Analyzer User Manual...

  • Page 47: Cleaning

    13. With the 1.5mm hex driver, reattach the analyzer top with 3 screws on each side. 13.2 Cleaning Clean the outside of the analyzer with a clean dry cloth. Only certified service technicians should access or clean the inside of the analyzer. Picarro G2108 Analyzer User Manual...

  • Page 48: Transportation And Storage

    When shipping or relocating the analyzer, it is important to protect it from mechanical shocks. Failure to do so can compromise its performance. When shipping the analyzer, use its original CAUTION packaging only. Picarro G2108 Analyzer User Manual...

  • Page 49: Limited Warranty

    Product specifications for twelve (12) months from shipment. This warranty is the only warranty made by Picarro with respect to its Products and no person is authorized to bind Picarro for any obligations or liabilities beyond this warranty in connection with its Products.
  • Page 50 Picarro. The following warranty conditions shall apply to all Picarro, Inc. products unless amended by a written instrument signed by a duly authorized officer of Picarro: ADJUSTMENT – No electrical, mechanical or optical adjustments to the product(s) are permitted.
  • Page 51 Picarro G2108 Analyzer User Manual...

  • Page 52: Appendix A - Remote Data Access

    RemoteAccess.exe program is configurable by means of an initialization file, which includes information such as the login credentials for the dial-up connection, the e-mail account and the list of timeservers. The initialization file is: C:\Picarro\G2000\AppConfig\Config\ RemoteAccess\RemoteAccess.ini Picarro G2108 Analyzer User Manual...

  • Page 53: Ntp

    Depending on the SMTP server, it may be necessary to use authentication before e-mails can be sent, as described in RFC2554. If such authentication is not needed, the key UseAuthentication is set Picarro G2108 Analyzer User Manual...
  • Page 54 If this key is set to true, two additional keys Username and Password must also be specified for the e-mail account. Picarro G2108 Analyzer User Manual...

  • Page 55: Dialup

    Example of “RemoteAccess.ini” File [LOGGING] Logfile=c:/temp/RemoteAccessLog [NTP] Server1=time-a.nist.gov Server2=time-b.nist.gov Server3=time-a.timefreq.bldrdoc.gov Server4=time-b.timefreq.bldrdoc.gov Server5=time-c.timefreq.bldrdoc.gov Server6=time.nist.gov Server7=time-nw.nist.gov UpdateClock=1 [DIALUP] ConnectionName=Picarro Dialup Access Username=user Password=password Number=14085551212 [EMAIL] Server=smtp.servername.org Directory=c:/picarro/mailbox From=instrument@picarro.com To1=recipient1@site1.com To2=recipient2@site2.com Subject=CRDS data from Silverstone instrument UseAuthentication=0 Picarro G2108 Analyzer User Manual...

  • Page 56: Appendix B - Status Log Messages

    Pressure Stabilizing/Locked The valve control system begins to allow flow through the analyzer and stabilizes the pressure inside the cavity. Measuring This is the normal mode of operation after startup has completed. Picarro G2108 Analyzer User Manual...

  • Page 57: Appendix C - User Data Files

    2 mi nute wi ndow a vera ge of HCl HCl _5mi n 5 mi nute wi ndow a vera ge of HCl Mol e fra cti on of wa ter va por percent DataLog_User.dat column descriptions Picarro G2108 Analyzer User Manual...

  • Page 58: Appendix D - Private Data Files

    Temperature measured at the hot box heatsink deg C HotBoxTec DAC output to hot box thermoelectric cooler INST_STATUS Hardware status code; should always equal 963 if the analyzer is operating properly InletValve DAC output to proportional valve at cavity inlet Picarro G2108 Analyzer User Manual...
  • Page 59 Unix time stamp for this spectrum milliseconds wlm1_offset Current frequency offset of the wavelength monitor wavenumbers y_62 Collisional broadening parameter for the water line dimensionless number y_70 Collisional broadening parameter for the HCl line dimensionless number Picarro G2108 Analyzer User Manual...

  • Page 60: Appendix E - External Valve Sequencer

    20. APPENDIX E – EXTERNAL VALVE SEQUENCER The Picarro valve sequencer window appears as in Figure 15 below: Figure 21: Valve Sequencer Layout 20.1 Introduction The Picarro analyzer can control two types of valves: Solenoid valve(s): DC voltage powered valve with normally open (NO) and normally closed (NC) positions.

  • Page 61: Default Configuration

    20.2 Default Configuration For all models of Picarro analyzers the rotary valve control is disabled in the factory default setting. The solenoid valve control, however, are ready to use by default for all solenoid valve connectors. 20.3 Setting Up Solenoid Valves Up to six solenoid valves can be controlled by the Valve Sequencer software.

  • Page 62: Valve Sequencer Software

    Each “step” sets the rotary valve to a single position and activates the indicated solenoid valve(s) for a set period of time. Multiple steps can be carried out in sequential order to switch between different gas Picarro G2108 Analyzer User Manual...

  • Page 63: Loading And Running A Saved Sequence

    “Disable Sequencer” once the sequence starts. (The sequencer should be activated if it was disabled but not necessary to change from one sequence to another). The sequence will repeat itself indefinitely until disabled or the software exited. If enabled, the Picarro G2108 Analyzer User Manual...
  • Page 64 These codes can be used as event timing flags. For example, if no solenoid valves are present, the codes will be recorded regardless of whether a valve is connected or not. Picarro G2108 Analyzer User Manual...

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