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Sensornet Sentinel DTS Quick Start Manual

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Summary of Contents for Sensornet Sentinel DTS

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  • Page 3: Table Of Contents

    SAFETY ......................1 General Safety....................1 Laser Safety ....................2 CONNECTING THE SENTINEL DTS & MULTIPLEXER......4 THE SENTINEL DTS CONTROLS AND INDICATORS ....... 5 The Sentinel DTS ..................5 On Standby Light ..................6 Interlock Open Light................. 6 Laser On Light ..................6 Laser Enable SWITCH................
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  • Page 5: Safety

    GENERAL SAFETY The following section provides Warnings, Cautions and Notes covering general safety aspects for the Sentinel DTS and Multiplexer. Please read all of the safety and operational warnings before connecting and operating this product. WARNING! THIS IS A WARNING SYMBOL. THIS SYMBOL IS USED THROUGHOUT THE USER GUIDE WHENEVER THERE IS A RISK OF PERSONAL INJURY.

  • Page 6: Laser Safety

    The Sentinel DTS distributed sensing system incorporates a pulsed laser device whose invisible output radiation is potentially hazardous if viewed directly by eye. The laser radiation emission from the laser within the Sentinel DTS is permanently coupled into a 50/125 multimode optical fibre whose end is terminated with a E2000 angled optical fibre connector.
  • Page 7 Sentinal DTS Quick Start Guide SEN2-QSG1.0 Page 3 The Sentinel DTS should be interfaced to a test fibre, using patch cord or pigtail assembly, fitted with a E2000 connector. The far end of the test fibre should be terminated to prevent free-space emission of laser radiation from the fibre end. It is recommended that where possible, E2000 connectors be utilized throughout the optical sensing network.

  • Page 8: Connecting The Sentinel Dts & Multiplexer

    Sentinal DTS Quick Start Guide SEN2-QSG1.0 CONNECTING THE SENTINEL DTS & MULTIPLEXER The following connections should be made between the Sentinel DTS and if required the Multiplexer and the installation. Figure 1 – The Sentinel DTS and Multiplexer Connection Diagram.

  • Page 9: The Sentinel Dts Controls And Indicators

    Sentinal DTS Quick Start Guide SEN2-QSG1.0 Page 5 For more information on making connections using optical fibres, please refer to the Sentinel DTS User Guide. THE SENTINEL DTS CONTROLS AND INDICATORS THE SENTINEL DTS Figure 2 – The Front of the Sentinel DTS.

  • Page 10: On Standby Light

    Page 6 Sentinal DTS Quick Start Guide SEN2-QSG1.0 ON STANDBY LIGHT When illuminated, this indicates that the Sentinel DTS is in operation. INTERLOCK OPEN LIGHT When illuminated, this indicates that the safety interlock has been activated and the laser is disabled.

  • Page 11: Start Measuring Using The Sentinel Dts

    Page 7 START MEASURING USING THE SENTINEL DTS Once the connections shown in section 2 have been made, the Sentinel DTS is ready to use. Before operating the Sentinel DTS, ensure all users have read and fully understood the safety section of this quick start guide.
  • Page 12 Page 8 Sentinal DTS Quick Start Guide SEN2-QSG1.0 Figure 4 – The Sensornet DTS Sentinel Main Menu. To begin measurements immediately using the factory set calibration values, click Start Measurement. Alternatively, the configuration file can be modified using either the Configuration Wizard or the Configuration Editor.

  • Page 13: The Sensornet Dts Sentinel Data Display Screen

    The Sensornet DTS Sentinel Data Display screen is the main control screen for the Sentinel DTS. The screen is divided into 5 different sections which allow the user to view and manipulate individual functions. The Sensornet DTS Sentinel Data Display screen is shown in figure 5.

  • Page 14: The Trace Selection Field

    THE PROGRAM CONTROL FIELD The Program Control Field allows the user to view and control the execution status of the program. NOTE: For more information on using the Sensornet software, please refer to the User Guide.

  • Page 15: Creating Configuration Files

    As you gain experience you should either load and edit a configuration file or create a new one using the configuration wizard. To do this, click on the Edit Configuration button in the Sensornet DTS Sentinel Main Menu and select Go Straight to Editor or Run Configuration Wizard.

  • Page 16: Temperature Slope Correction

    Temperature offset allows the user to calibrate the absolute temperature values for the Sentinel DTS. This is normally performed by entering a predetermined fixed value or by referencing a section of the optical fibre in a specific region with the temperature values of a reference probe or region of known temperature.

  • Page 17: Measurement And Repetition Time

    When creating or editing a configuration file, both measurement time and repetition time can be set. The measurement time is the time over which the Sentinel DTS will perform averaging of the signal to reduce noise and improve the temperature resolution.

  • Page 18: The Data Files

    Sensornet DTS folder. The directory route is C:\Sensornet DTS. An example of the expanded directory route is shown in figure 6. Figure 6 – The Expanded Directory Route. The Sentinel DTS generates two types of distributed data files. These are Full Data and Temperature Only data files. FULL DATA SET FILES Full Data Set files contain the complete data set generated by the Sentinel DTS system after every repetition of the measurement cycle.

  • Page 19: Temperature Only Data Set Files

    TEMPERATURE ONLY DATA SET FILES The Temperature Only Data Set files contain only the temperature data generated by the Sentinel DTS system after every repetition of the measurement cycle. The Temperature Only Data Set files have a .dtd file extension.

  • Page 20: Troubleshooting

    Page 16 Sentinal DTS Quick Start Guide SEN2-QSG1.0 TROUBLESHOOTING Problem Common Suggested Fix Comments Causes •Temperature •Dirty connectors •Clean Point losses and a fibre trace has •Connectors not connectors break can easily be excessive fully inserted and •Re-splice fibre identified from the raw noise latched joints...
  • Page 21 •Reset VNC passwords •Multiplexer •Fibre cables •Check fibre If problem persists, contact channel data connected to cable Sensornet Ltd appears wrong multiplexer connections incorrect channels and active •Multiplexer •Expansion unit channels Expansion cable fault •Ensure...
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  • Page 24 Sensornet Ltd 198 Providence Square Jacob Street London SE1 2DZ United Kingdom Tel: +44 (0)20 7394 3555 Fax: +44 (0)20 7394 0555 E-mail: enquires@sensornet.co.uk Website: www.sensornet.co.uk...

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