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onset     ®




                Choosing a Conductivity/Salinity Logger:
                      5 Important Considerations
                                              Part 2 of 2




                      Paul Gannett
                      Product Marketing Manager


  HOBO
                ®


4/25/2012                                     ONSET COMPUTER   1   1
onset     ®




                      Choosing a Conductivity/Salinity Logger:
                Deployment Considerations - Calibration
                            Lab Calibration vs Field Calibration

                    Lab calibration                                      Field calibration




            Great for the initial deployment                    Easier for ongoing deployments

  HOBO
                ®


4/25/2012                                      ONSET COMPUTER                                    2
onset     ®




                         Choosing a Conductivity/Salinity Logger:
       Deployment Considerations – Data offload

                    A waterproof data shuttle can
                    provide easy and reliable data
                    offload in wet environments




  HOBO
                ®


4/25/2012                                    ONSET COMPUTER         3
onset     ®




                Choosing a Conductivity/Salinity Logger:
                      5 Important Considerations

                       • Accuracy
                       • Mounting
                       • Ease of deployment and data
                         offload
                       • Software
                       • Cost of ownership


  HOBO
                ®


4/25/2012                         ONSET COMPUTER           4
onset     ®




                    Choosing a Conductivity/Salinity Logger:
                                     Software
   Look for software that makes it easy to
   configure your logger and analyze data
    • Intuitive point-and-click configuration
    • Multi-logger graphing and analysis
    • Ability to format, annotate and save
      graphs

     Consider ease of data integration
     • Merging data from multiple loggers
     • Data export – for use in other
       programs or databases
     • Data import – for bringing in related
       data
  HOBO
                ®


4/25/2012                               ONSET COMPUTER         5
onset     ®




                     Choosing a Conductivity/Salinity Logger:
                                            Software
  Look for software that provides the conversion
  methods & accuracy you need
  • Salinity calculated with Practical Salinity
     Scale 1978 (PSS-78) (2 to 42 ppt range)
  • Specific conductance – there are several
     temperature compensation methods:
            – Linear compensation (%/C)
            – Freshwater compensation EN27888
            – Non-linear seawater compensation
  • Ability to use field calibration readings,
    preferably from both the start and end of
    deployment to adjust for fouling.


  HOBO
                ®


4/25/2012                                        ONSET COMPUTER   6
onset     ®




                Choosing a Conductivity/Salinity Logger:
                      5 Important Considerations

                       • Accuracy
                       • Mounting
                       • Ease of deployment and data
                         offload
                       • Software
                       • Cost of ownership


  HOBO
                ®


4/25/2012                         ONSET COMPUTER           7
onset     ®




                        Choosing a Conductivity/Salinity Logger:
                                     Cost of Ownership
        Think beyond the initial purchase price!
        • Look for a logger that will last many years
                    – Housing material – Delrin or Titanium for saltwater – stainless
                      steel is good for freshwater, but corrodes in saltwater
                    – Non-contact sensors last longer than electrodes that are in contact with
                      the water
        • Regular sensor cleaning extends the logger’s life – look for one that is
          easy to clean
        • Replacement batteries and sensor extends the life of your logger
        • Using a waterproof shuttle avoids risking your laptop in the field
        • Software that saves you time can reduce your cost:
                    – Easy logger configuration and data analysis
                    – Software that can compensate for fouling means you don’t have to go
                      into the field as often

  HOBO
                ®


4/25/2012                                          ONSET COMPUTER                                8
onset     ®




                Recap of the 5 Important Considerations


                       • Accuracy
                       • Mounting
                       • Ease of deployment and data
                         offload
                       • Software
                       • Cost of ownership


  HOBO
                ®


4/25/2012                         ONSET COMPUTER          9
onset     ®




                              Example:
                    HOBO Conductivity/Salinity Logger
                                     • Records conductivity & temperature
                                     • Durable Delrin® housing
                                     • Non-contact sensor for long life
                                     • Easy-to-clean sensor with Titanium
                                       Pentoxide coating
                                     • Two models:
                                           – Freshwater range: $699
                                           – Saltwater range: $750
                                     • Optical interface for high-speed
                                       data offload in wet environments
                                     • Compatible with HOBO Waterproof
                                       Shuttle for easy data retrieval



  HOBO
                ®


4/25/2012                                ONSET COMPUTER                     10
onset     ®




                            HOBOware Conductivity Assistant




      • Calculates Salinity using PSS-78                    • Uses field meter readings for
      • Calculates Specific Conductance                       calibration of conductivity data
        with choice of temperature                          • Start and end calibration points
        compensation methods:                                 used to compensate for fouling
                – Linear compensation
                – Freshwater compensation: EN27888
                – Seawater compensation based on PSS-78

  HOBO
                ®


4/25/2012                                        ONSET COMPUTER                                  11
onset     ®




                    HOBOware for graphing and analysis


     • Intuitive point-and-click configuration
     • Multi-logger graphing and analysis
     • Ability to format, annotate and save
       graphs
     • Merge data from multiple loggers
     • Data export – for use in other
       programs or databases
     • Data import – for bringing in related
       data




  HOBO
                ®


4/25/2012                               ONSET COMPUTER   12
onset     ®




                Choosing a Conductivity/Salinity Logger:
                      5 Important Considerations


                              Questions?




  HOBO
                ®


4/25/2012                        ONSET COMPUTER            13
onset     ®




                    We will send an email with a link to this
                    webinar

                    Additional Resources at onsetcomp.com:
                    - Detailed product information
                    - White papers
                    - Application notes
                    - Webinars on using our software




  HOBO
                ®


4/25/2012                                ONSET COMPUTER         14
Contacting Onset
  Questions about this webinar:

  Paul Gannett
  Direct Tel: 508-743-3149
  paul_gannett@onsetcomp.com

  General Product Questions:

  Onset Technical Support:                    Product Application Specialists:
  8am – 8pm EST Monday – Friday               Tel. 1-800-564-4377
  1-800-564-4377 / 508-759-9500               sales@onsetcomp.com
  loggerhelp@onsetcomp.com




4/25/2012                 Onset Computer Corp – www.onsetcomp.com
onset     ®




                Choosing a Conductivity/Salinity Logger:
                      5 Important Considerations


                        Questions and Answers
                         Thanks for attending!




  HOBO
                ®


4/25/2012                        ONSET COMPUTER            16

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Choosing a conductivity salinity logger part 2 of 2

  • 1. onset ® Choosing a Conductivity/Salinity Logger: 5 Important Considerations Part 2 of 2 Paul Gannett Product Marketing Manager HOBO ® 4/25/2012 ONSET COMPUTER 1 1
  • 2. onset ® Choosing a Conductivity/Salinity Logger: Deployment Considerations - Calibration Lab Calibration vs Field Calibration Lab calibration Field calibration Great for the initial deployment Easier for ongoing deployments HOBO ® 4/25/2012 ONSET COMPUTER 2
  • 3. onset ® Choosing a Conductivity/Salinity Logger: Deployment Considerations – Data offload A waterproof data shuttle can provide easy and reliable data offload in wet environments HOBO ® 4/25/2012 ONSET COMPUTER 3
  • 4. onset ® Choosing a Conductivity/Salinity Logger: 5 Important Considerations • Accuracy • Mounting • Ease of deployment and data offload • Software • Cost of ownership HOBO ® 4/25/2012 ONSET COMPUTER 4
  • 5. onset ® Choosing a Conductivity/Salinity Logger: Software Look for software that makes it easy to configure your logger and analyze data • Intuitive point-and-click configuration • Multi-logger graphing and analysis • Ability to format, annotate and save graphs Consider ease of data integration • Merging data from multiple loggers • Data export – for use in other programs or databases • Data import – for bringing in related data HOBO ® 4/25/2012 ONSET COMPUTER 5
  • 6. onset ® Choosing a Conductivity/Salinity Logger: Software Look for software that provides the conversion methods & accuracy you need • Salinity calculated with Practical Salinity Scale 1978 (PSS-78) (2 to 42 ppt range) • Specific conductance – there are several temperature compensation methods: – Linear compensation (%/C) – Freshwater compensation EN27888 – Non-linear seawater compensation • Ability to use field calibration readings, preferably from both the start and end of deployment to adjust for fouling. HOBO ® 4/25/2012 ONSET COMPUTER 6
  • 7. onset ® Choosing a Conductivity/Salinity Logger: 5 Important Considerations • Accuracy • Mounting • Ease of deployment and data offload • Software • Cost of ownership HOBO ® 4/25/2012 ONSET COMPUTER 7
  • 8. onset ® Choosing a Conductivity/Salinity Logger: Cost of Ownership Think beyond the initial purchase price! • Look for a logger that will last many years – Housing material – Delrin or Titanium for saltwater – stainless steel is good for freshwater, but corrodes in saltwater – Non-contact sensors last longer than electrodes that are in contact with the water • Regular sensor cleaning extends the logger’s life – look for one that is easy to clean • Replacement batteries and sensor extends the life of your logger • Using a waterproof shuttle avoids risking your laptop in the field • Software that saves you time can reduce your cost: – Easy logger configuration and data analysis – Software that can compensate for fouling means you don’t have to go into the field as often HOBO ® 4/25/2012 ONSET COMPUTER 8
  • 9. onset ® Recap of the 5 Important Considerations • Accuracy • Mounting • Ease of deployment and data offload • Software • Cost of ownership HOBO ® 4/25/2012 ONSET COMPUTER 9
  • 10. onset ® Example: HOBO Conductivity/Salinity Logger • Records conductivity & temperature • Durable Delrin® housing • Non-contact sensor for long life • Easy-to-clean sensor with Titanium Pentoxide coating • Two models: – Freshwater range: $699 – Saltwater range: $750 • Optical interface for high-speed data offload in wet environments • Compatible with HOBO Waterproof Shuttle for easy data retrieval HOBO ® 4/25/2012 ONSET COMPUTER 10
  • 11. onset ® HOBOware Conductivity Assistant • Calculates Salinity using PSS-78 • Uses field meter readings for • Calculates Specific Conductance calibration of conductivity data with choice of temperature • Start and end calibration points compensation methods: used to compensate for fouling – Linear compensation – Freshwater compensation: EN27888 – Seawater compensation based on PSS-78 HOBO ® 4/25/2012 ONSET COMPUTER 11
  • 12. onset ® HOBOware for graphing and analysis • Intuitive point-and-click configuration • Multi-logger graphing and analysis • Ability to format, annotate and save graphs • Merge data from multiple loggers • Data export – for use in other programs or databases • Data import – for bringing in related data HOBO ® 4/25/2012 ONSET COMPUTER 12
  • 13. onset ® Choosing a Conductivity/Salinity Logger: 5 Important Considerations Questions? HOBO ® 4/25/2012 ONSET COMPUTER 13
  • 14. onset ® We will send an email with a link to this webinar Additional Resources at onsetcomp.com: - Detailed product information - White papers - Application notes - Webinars on using our software HOBO ® 4/25/2012 ONSET COMPUTER 14
  • 15. Contacting Onset Questions about this webinar: Paul Gannett Direct Tel: 508-743-3149 paul_gannett@onsetcomp.com General Product Questions: Onset Technical Support: Product Application Specialists: 8am – 8pm EST Monday – Friday Tel. 1-800-564-4377 1-800-564-4377 / 508-759-9500 sales@onsetcomp.com loggerhelp@onsetcomp.com 4/25/2012 Onset Computer Corp – www.onsetcomp.com
  • 16. onset ® Choosing a Conductivity/Salinity Logger: 5 Important Considerations Questions and Answers Thanks for attending! HOBO ® 4/25/2012 ONSET COMPUTER 16