PME – miniDOT Loggers

Precise Measurement Engineering's range of accurate & reliable dissolved oxygen loggers

Key Features:

  • Time, Date, Temperature and Dissolved Oxygen Logger.
  • Small, durable and easy to use
  • Data visualization software
  • Stable optode calibration
  • Real-time display on miniDOT Clear

The miniDOT logger is a completely submersible instrument that logs dissolved oxygen and temperature measurements. The oxygen sensor is an optode that measures dissolved oxygen concentration in water through a fluorescence method. Data are recorded to an internal SD card. Operation of the miniDOT logger such as setting the time and sample interval can be accomplished via the USB cable.

The miniDOT Clear logger shares the same dissolved oxygen and temperature logging capabilities of the miniDOT. However, with the a transparent casing and internal LCD screen, real-time measurements can be visualised from the logger.

miniWiper for miniDOT Loggers:

  • Completely submersible
  • Self-Contained
  • Various wiping intervals
  • Internally powered
  • 25m depth rating

The miniWIPER is a self-contained, completely submersible, wiping device that can be used with a variety of sensors. It can be programmed to wipe at various intervals, and is powered from two AA Lithium batteries. A small brush rotates over the sensor in order to perform a complete wipe of the sensor surface, and then rests away from the sensor to allow for accurate and continuous monitoring. The wiper is used as an anti-fouling device and may reduce the growth of various organisms on the sensor.

The miniWIPER is intended to provide gentle brush action across the sensor, and can wipe at intervals from once, every hour or once, every 24 hours. A copper plate is available to be placed on the miniDOT logger to increase wiper effectiveness. Internal software allows the user to set the wiping interval and check the battery voltage. The miniWIPER was designed in-house by PME engineers with the idea to have a wiper, which is portable, completely submersible, reliable and easy to use. The miniWIPER outer encasement is manufactured from a strong Delrin plastic, and all other components are sourced from high-quality suppliers.