Design Criteria


  • All products will be built in a manner for ease of use and with sensible ergonomics for the application.
  • All products will be built and type tested (vibration & shock) to ensure long life in the outside plant application.
  • All products (unless stated otherwise) are constructed to continue to operate in -20oC to +50oC environments (battery performance degrades with reducing temperature).
  • All products used in outdoor applications will meet a minimum of IP54 standard (basically weatherproof), although not strictly eligible to receive a full rating for the high specification (as the whole product would not meet that standard) the parts of the locators or products that are likely to be placed in standard water will be designed and built to IP65 or IP68 (submersible) standards.
  • All camera heads and Sondes will be built to IP68 standard (submersible).
  • All products with adhere to the relevant National and international safety standards. 


  • All electronic systems are designed in accordance with the CE / FCC harmonized standards for Electromagnetic Compatibility. This includes:
    • Conducted RF Emissions (where applicable): EN61000-6-4
    • Radiated Emissions: EN61000-6-4
    • Electrostatic Discharge: EN61000-4-2
    • Radiated RF Immunity 80MHz to 1GHz
    • Fast Transient and Burst Immunity (where applicable): EN61000-4-4
    • Surge Immunity (where applicable): EN61000-4-5
    • Conducted RF Immunity (where applicable): EN61000-4-6
    • Mains Dips and Interruptions (where applicable): EN61000-4-11
    • Power Frequency Magnetic Field Immunity: EN61000-4-8
    • Harmonics (where applicable): EN61000-3-2
    • Flicker (where applicable): EN61000-3-3
  • All electrical systems and PCBs are designed with full awareness of Voltage Creepage and Clearance requirements. EN60950. The normal assumption for products is a Pollution Degree 2 – that is normally only non-conductive pollution, but temporary conduction caused by condensation may be expected.
  • All electronic systems are designed to ensure they can be tested and calibrated with the highest possible integrity. In particular electronic systems are modular in concept allowing sub-system testing to take place. Where applicable, built in tests and automatic self-tests are deployed.
  • Electronic systems are designed for minimum power consumption and maximum battery life.
  • Battery powered products are designed to operate with Alkaline cells and (where applicable) re-chargeable options, typically NiMH and Lithium Ion.
  • Power systems are designed to be protected from under voltage lockout.
  • All systems using PC based software, or embedded applications, are configurationally controlled and can display the applicable revision number via the user interface.
  • Embedded software applications have independent watchdog controllers and recover gracefully from error conditions.
  • PC based software is designed to operate under the current Windows operating system and it's predecessor at any given time. 
  • Systems which require a factory calibration are traceable to International Standards for MKS units. Where possible calibration parameters are cast as dimensionless ratios, therefore eliminating instrumentation errors.