PICARRO G2204 User Manual
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PICARRO G2204 User Manual

Analyzer for h2s and ch4
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G2204 Analyzer for H
S and CH
2
4
User Manual
Picarro, Inc.
3105 Patrick Henry Drive
Santa Clara, CA 95054, USA
Phone: +1 408 962 3900
www.picarro.com
Document Number 40041 Rev. B

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  • Page 1 G2204 Analyzer for H S and CH User Manual Picarro, Inc. 3105 Patrick Henry Drive Santa Clara, CA 95054, USA Phone: +1 408 962 3900 www.picarro.com Document Number 40041 Rev. B...
  • 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 +31 85 888 1650 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 96 3200 www.picarro.com...

  • Page 4: Table Of Contents

    7.4 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. STATUS LOG MESSAGES 9.1 Normal Startup Messages ..............32 P/N 40041-Rev B G2204 Analyzer User Manual...
  • Page 5 10. LIST OF GUI FUNCTIONS 10.1 Additional Tools and Information ............33 10.2 Settings, Tools and Help Menus: ............33 10.3 Alarm Panel ..................34 10.4 Digital Readouts .................. 35 10.5 Start / Stop Data Log Button..............35 10.6 Data Log Filename and Path ............... 36 10.7 Data Window ..................
  • Page 6 C.3 Setting up Solenoid Valves ..............66 C.4 Setting Up Rotary Selector Valve ............66 C.5 Valve Sequencer Software ..............67 C.6 Configuring a Valve Sequence ............. 67 C.7 Loading and Running a Saved Sequence ..........68 P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 7: Introduction To Technology

    Spectroscopy (CRDS), on the other hand, is one thousand to one million more times sensitive. In Picarro analyzers, light from a single-frequency laser enters a cavity where three mirrors reflect the laser light as seen in Figure 1. The light...

  • 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. P/N 40041-Rev B G2204 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.

  • 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...
  • Page 11 ▪ Precise temperature and pressure control in the sample cavity: Accurate absorption measurements at precisely known wavelengths account for little unless the temperature and pressure of the CRDS measurement cavity are known. The observed line intensity and shape depend on the temperature and pressure inside the sample cavity.

  • 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 P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 13: Acronyms

    3. ACRONYMS This manual includes various acronyms. For definitions, see below: Acronym Definition CRDS Cavity Ring-Down Spectroscopy Graphical User Interface centimeters millimeters ” (as in 1/4”) Inches Methane Water Hydrogen Sulfide Ammonia Carbon Dioxide Hotbox Warm box Parts Per Million Parts Per Billion ‰...

  • Page 14: Safety

    4. SAFETY 4.1 General Safety CDRH Certification This Picarro Analyzer complies with 21 CFR Chapter 1, sub-chapter J, and is classified as a Class 1 laser system when all panels and covers are on. CE Certification This Picarro Analyzer complies with the European standards and the instrument is affixed with a CE label.

  • Page 15: Laser Safety

    This analyzer weighs 46 lbs. (20.9 kg). Use the technique described below when lifting the analyzer. a. Before lifting, inspect the unit for slippery substances or WARNING sharp edges. b. Lift with two people, one on each side of the analyzer. c.
  • 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 P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 17: Unpacking The Analyzer

    5. UNPACKING THE ANALYZER 5.1 Inspect the Shipping Boxes Picarro products are inspected and tested before leaving the factory. Their packing containers have been designed to keep the equipment safe from damage during transit. Inspect the condition of the boxes upon arrival. The larger box includes the analyzer and most of the accessories.
  • Page 18 For External Solenoid Valves Nut (1) and Ferrules (2) For connecting input line to analyzer INPUT Document Packet (1) Includes this manual, certificate of compliance, and Windows License. USB Flash Drive Contains backup software. P/N 40041-Rev B G2204 Analyzer User Manual...
  • Page 19 Box Two: Vacuum Pump and Accessories Item (qty) Description Pump (1) Provides vacuum required for sample gas sequencing into and out of the analyzer. 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.

  • Page 20: Analyzer Overview

    6. ANALYZER OVERVIEW 6.1 Intended Use The G2204 Analyzer measures concentrations of CH S 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 CH S monitoring applications.

  • Page 21: Analyzer Specifications

    6.3 Analyzer Specifications Weight (Total) 60.4 lbs. (27.4 kg), Including external pump Analyzer 46 lbs. (20.9 kg) Pump 14.4 lbs. (6.5 kg) Analyzer Dimensions Length: 17.55" (43.2 cm) Width: 17” (44.6 cm) Height: 7" (17.8 cm) Storage: –10 °C to 50 °C; Operation: 10 °C to 35 °C Temperature Range Sample Flowrate <...

  • 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

    During installation and operation, do not position the analyzer so that it is difficult to operate the disconnecting device. CAUTION Take care to ensure that warm air is exhausted from an enclosure in which the analyzer is mounted. NOTE It is imperative that the analyzer have adequate ventilation and/or cooling to maintain the ambient temperature below 35 °C when operating.
  • 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

    Figure 6: Analyzer Back Panel The software to operate the instrument will start automatically after the operating system has loaded. The user interface will appear a few seconds after the instrument software starts. NOTE See Section 8.1. 7.3 Connecting to the Analyzer Inlet Connect to the inlet of the analyzer using ¼"...

  • 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. P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 27: Basic Operation

    Icons on the desktop are as follows: • 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 1). If the analyzer has multiple modes, this allows the user to switch between them easily.
  • Page 28 Figure 2 - Layout of the Picarro analyzer GUI, G2000 series. A full explanation of the GUI functions can be found in Section 10 Data will be saved automatically once the analyzer starts to produce data. The data in the GUI is the continuous real time read out from the analyzer. A user relevant subset of this data is stored in C:\Userdata\DataLog_User \YYYY\MM\DD, where Y=year, M=month, D=day.

  • Page 29: Shutdown Procedure

    Figure 3 - Overview generalized schematic of Picarro analyzer system hardware, software, and data file generation. The samples A, B, and C are introduced into the analyzer sequentially by a sampling module, if present. The sampling module could be a set of customer- supplied valves, a valve manifold, a discrete sampling module, or other device.

  • 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...
  • Page 31 collected data, instrument diagnostics, and other parameters recorded up to the time of power outage are retained.

  • Page 32: 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. P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 33: List Of Gui Functions

    10. LIST OF GUI FUNCTIONS 10.1 Additional Tools and Information The Picarro analyzer GUI has several other buttons and features as labeled in Figure 1. Data Data windows windows Settings, Settings, tools and tools and help menus help menus Alarm Panel...

  • Page 34: Alarm Panel

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

  • Page 35: Digital Readouts

    Type the value you wish to set the alarm to and press the “ok” button, or press “cancel” if you do not wish to change the alarm value. If you do nothing, the dialog box will disappear and the alarm value will remain unchanged.

  • Page 36: Data Log Filename And Path

    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. P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 37: Status Log Window

    10.11 Status Log Window This window displays instrument status messages, in the following form: “MM/DD/YYYY hh:mm:ss generic message text.” These messages include all messages sent to the DAS front panel display. 10.12 Reset Data Buffer Button Press this button to clear the internal data buffer of the GUI (this clears the current data traces from the graphs).

  • Page 38: File Management

    Naming Convention: See example below. ▪ CFHADS2007-20111222-000131-DataLog_User.dat ▪ CFHADS: Instrument Serial Number ▪ 20111222: Year, Month, date of when file was started. ▪ 000131: Hour, Minute, second of when file was started (Using a 24 hour clock). P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 39: Archived Data

    Archived_Data Directory contains two types of data: DataLog_User_Backup & DataLog_Private. • DataLog_User_Backup: Is the archived, older data that is stored in compressed zip format. o Location: C:\Picarro\G2000\Log\Archive\DataLog_User_Backup\Ye ar\Month\Day o Naming Convention: See example below. ▪ DataLog_User_Backup_20111107_005427.zip ▪ 20111107: Year, Month, data when the file was started.

  • Page 40: File Archival And Automatic Deletion Of Old Files

    The analyzer can automatically compress (zip) and archive old files as mentioned above. This operation is controlled by the ini file: C:\Picarro\G2000\ AppConfig\Config\Archiver\Archiver.ini. For each file type, there are various items along with some recommended default settings which may vary by file type: •...

  • Page 41: Setup Tool

    Specifies how long to keep files prior to deletion. 11.5 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 42 Total User Log Storage Size (GB): Specifies the size of storage allowed for User Data (Recent Data). After making the appropriate edits, click “Apply” to put changes into effect and then “Exit” to close the window. P/N 40041-Rev B G2204 Analyzer User Manual...
  • Page 43 After making the appropriate edits, click “Apply” to put changes into effect and then “Exit” to close the window. See below to learn more about Serial Communication in Picarro Analyzer, and also see “External Valve Sequencer” section of this manual to learn more about valve sequencer.
  • Page 44 Subject: subject line of the email. Data Directory: Location of the data you want email. After making the appropriate edits, click “Apply” to put changes into effect and then “Exit” to close the window. P/N 40041-Rev B G2204 Analyzer User Manual...
  • Page 45 Editing Main GUI Properties The GUI PROPERTIES tab allows you to set the number of line graphs visible on the main GUI. It also allows you to enable the control of Valve Sequencer from the main GUI. To make the Valve Sequencer menu item visible under the “Tools” menu of the main GUI: 1.
  • Page 46 G2311-f analyzers). To output data, the Command Interface needs to be sent commands to. After making the appropriate edits, click “Apply” to put changes into effect and then “Exit” to close the window. P/N 40041-Rev B G2204 Analyzer User Manual...
  • Page 47 Specifying Digital Data Output For Data Streaming The DATA STREAMING tab allows you to specify the data elements that you want to send via COM port (specified from the PORT MANAGER tab). Two types of data can be specified here: Datalog_User & DataLog_User_Sync (Relevant only for Flux G2311-f analyzers) Data Streaming outputs data continuously, whereas the Command Interface needs commands to output data.
  • Page 48 Customizing Analog Output Channels The Picarro analyzer may be optionally configured with an Electrical Interface Card (EIC) that provides up to 8 analog signals available to the user for monitoring various measurements results and analyzer parameters. The ELECTRICAL INTERFACE tab allows you to customize each analog output channel.

  • Page 49: Calibration

    Method 1. 12.1 Using the GUI to Calibrate Since the Picarro Analyzer is extremely linear, it is only necessary to use three calibration standards to calibrate each gas or isotopic species (two points define the calibration line and a third intermediate point is used for verification).
  • Page 50 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. User Calibration Window...
  • Page 51 After the calibration is entered, it will take effect immediately after clicking “OK.” To return to the factory calibration, simply set the slope to 1 and the intercept to 0 for each species.

  • Page 52: 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. 13.1 Power LED on Analyzer Does Not Illuminate Context: Turning on the analyzer by momentarily depressing its front panel power switch should apply power.

  • Page 53: Sample Pressure Can't Be Controlled To Appropriate Value For Concentration

    13.3 Sample Pressure Can’t Be Controlled to Appropriate Value for Concentration Measurements Context: Under normal operation, the cavity pressure is automatically locked to the correct value by means of electronically controlled inlet and outlet valves. The message “Pressure Locked” on the front panel display and the user interface indicates that the cavity pressure is at the appropriate value.

  • Page 54: Service And Maintenance

    Particulate Filter: There are two in-line, sub-micron particulate filters before the measurement cavity. The first is user-replaceable and replacement filters can be purchased from Picarro and installed by the user. It is important to NEVER remove the filter that is directly attached to the cavity.

  • Page 55: Removing The Old Particulate Filter

    14.2 Removing the Old Particulate Filter Move the analyzer to a clean work environment 1. Using the 1.5mm hex driver, remove analyzer top lid by removing six (3 per side) M3 x 6mm socket flathead screws. 2. Remove the piece of foam from around the input bulkhead by sliding it towards the back of the analyzer.
  • Page 56 Loosen here. this nut Filter cover removed 6. Slide the filter and bulkhead slightly towards the back of the analyzer and lift out. Filter and bulkhead slid slightly towards back of DAS P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 57: Installing The New Filter

    7. Using the 9/16” and 11/16” wrenches, disconnect the filter from bulkhead fitting. Filter removed and separated from bulkhead fitting 14.3 Installing the New Filter When reattaching 1/4” Swagelok fittings, the nut should be hand- tightened and then turned an additional 1/8 of a turn using a wrench. NOTE 1.

  • Page 58: Cleaning

    5. With the 1.5mm hex driver, reattach the analyzer top with 3 screws on each side. 14.4 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. P/N 40041-Rev B G2204 Analyzer User Manual...

  • Page 59: 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 60 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. PARTS AND LABOR - New or factory-built replacements for defective parts will be supplied for twelve (12) months from date of shipment of the product.

  • Page 61: Remote Data Access

    Programming Guide (included in pdf format on the installation CD) and Section 11.5 of this manual. This command set may also be used across a TCP/IP interface through an Ethernet connection. Please contact Picarro for further details. A.2 Remote Data Access Configuration Using the RemoteAccess.ini file, the analyzer can be configured to...
  • Page 62 RFC2554. If such authentication is not needed, the key UseAuthentication is set to false. If this key is set to true, two additional keys Username and Password must also be specified for the e-mail account. P/N 40041-Rev B G2204 Analyzer User Manual...
  • Page 63 Password and Number are used to make the connection. 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...

  • Page 64: Data File Viewer

    In the graph window, you can select any of the data columns in the file, autoscale, zoom, hide/show points, and calculate statistics of data within the graph window. If you have any questions, please contact Picarro or refer to Picarro Community for more information. https://www.picarro.com/support/community...

  • Page 65: External Valve Sequencer

    The Picarro valve sequencer window appears as below: External Valve Sequencer GUI C.1 Introduction The Picarro analyzer can control two types of valves: 1. Solenoid valve(s): DC voltage powered valve with normally open (NO) and normally closed (NC) positions. These can be either 2-way or 3- way valves.

  • Page 66: Default Configuration

    C.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. C.3 Setting up Solenoid Valves Up to six solenoid valves can be controlled by the Valve Sequencer software.

  • Page 67: Valve Sequencer Software

    The setup will be similar to that in the pictures below: C.5 Valve Sequencer Software The Valve Sequencer software allows the user to set steps in which solenoid valves are turned on/off and the rotary selector valve is set to a single position.

  • Page 68: Loading And Running A Saved Sequence

    If enabled, the sequence will continue to run after the “close sequencer window” button is pressed. If desired, the valve sequence can be forwarded to the next step of the sequence by pressing the “run next step” button. To stop the sequencer P/N 40041-Rev B G2204 Analyzer User Manual...
  • Page 69 file, use the “Start/Stop Sequencer” menu item under the “Action” menu. This will leave all valves in their current state. In some situations, it is convenient to program the last step in the sequence to be a safe or default valve state.

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