What are the main differences between the HQd and SensION+ meters and probe lines?

Document ID

Document ID TE10010

Published Date

Published Date 10/31/2019
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Question
What are the main differences between the HQd and SensION+ meters and probe lines?
Summary
Comparting HQd and SensION+ meters and probes.
Answer
  • The HQd meters are manufactured by Hach. The SensION+ meters are private labeled for Hach by another Manufacturer.
    • Because of this HQd meters have service and repair options while the SensION+ meters do not.
    • The documentation for the HQd meters and probes have more detail than the documentation available for the SensION+ instruments.
    • The HQd meters and IntelliCAL™ probes come with and have serial number specific quality test certificates available. The SensION+ meters and probes do not.
  • The HQd meter use the IntelliCAL™ probes.
    • IntelliCAL™ probes have proprietary digital connectors which make them only compatible with HQd meters. And HQd meters only work with IntelliCAL™ probes. (See also: Which IntelliCAL™ probes are compatible with each of the HQd meters?)
    • These digital connectors allow for bi-directional communication between the meters and probes.
    • The probe settings, data for current calibration, and the calibration history is stored on the probes themselves.
    • The communication allows for the meters to automatically recognize what probe is connected to it, what the probe settings are, and uses the last calibration performed on that probe without needing to manually tell the meter which probe is being used, readjusting settings, or recalibrating when switching between probes.
  • The IntelliCAL™ Dissolved Oxygen probe is a Luminescent or Optical DO probe. The SensION+ Dissolved Oxygen probes are Polarographic. (See also: What are the benefits of using an LDO® (Luminescent Dissolved Oxygen) over a Polarographic Dissolved Oxygen (PDO) probe?)
  • The HQd/IntelliCAL™ probes have Rugged electrodes available for pH, Conductivity, ORP, and Dissolved Oxygen in addition to the lab style electrodes. The SensION+ meters do not have any rugged style probes.
    • The rugged probes have longer stronger cables, a stainless-steel body, the sensors have a large protective shroud, and an IP68 enclosure rating. These probes are specifically designed for full submersion applications.
  • The Benchtop SensION+ potentiometric electrodes are all analog with BNC connectors. (This includes pH, ORP, and ISEs)
    • BNC connectors are generally considered universal for analog meters.
    • So non-Hach analog meters can likely work with SensION+ probes, and non-Hach analog probes can likely work with SensION+ meters. (Note: This is commonly not true for the temperature connectors however, so results will often not be temperature corrected or compensated unless they are used with a separate meter-specific temperature electrode.)
  • The HQd meters have USB connectivity.
    • Benchtop meters have a USB port directly on the back. Portable meters require the use of a USB/Power adapter (See also: What is the part number for the power adapter/power cord for the HQd portable and benchtop meters?).  (Note: the HQ40d includes this USB/Power adapter).
    • Some (but not all) SensION+ meters have RS232 outputs but also require a PC software product to be purchased to do any type of data export.
    • The HQd meters are all able to export data without the use of PC software making them the better option data transfer.
  • The HQ40d and HQ440d have two inputs.
    • With two probes connected and one press of the read button, both results will be measured and displayed simultaneously.
    • Some SensION+ meters have multiple inputs, but even with those meters only one measurement can be made at a time.
  • The HQd meters have a more user friendly intuitive interface.
    • The HQd meters have two soft buttons. What these buttons do depend on the screen, but what those buttons do in that screen are displayed right above the buttons.
    • The SensION+ meters also have buttons that do different things in different menus, but button sequences need to be memorized to navigate menus. Or the manual would need to be followed whenever menus need to be navigated.
  • The SensION+ benchtop meters have a built in magnetic stirrer. If a magnetic stirrer is needed or preferred, it would need to be purchased separately when using an HQd meter.
  • The SensION+ portable meters have multi-parameter probes available.
    • These probes only work with one specific meter, and that meter will only work with that specific multiparameter probe:
      • 5048 pH/EC/ORP is only compatible with the MM150 meter.
      • 5059 pH/EC is only compatible with the MM150 meter.
      • 5045 pH/ORP is only compatible with the MM110 meter.
      • 5049 pH/EC/DO is only compatible with the MM156 meter.
    • These probes allow for simultaneous measurement of those parameters.
    • If one part of the probe fails the complete probe would need to be replaced. (Except for the 5049, which has replaceable sensors).

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