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PME miniWIPER for miniDOT Logger

The PME miniWIPER is a self-contained, completely submersible wiping device that can be used with a variety of sensors including the miniDOT Logger.

Features

  • Completely submersible to 25m depths
  • Can operate for up to 3-months at 1-hour wipe interval
  • Software is supplied to change the wiping interval and check battery voltage
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Overview
The PME miniWIPER is a self-contained, completely submersible wiping device that can be used with a variety of sensors including the miniDOT Logger. It can be programmed to wipe at various intervals, and is powered from two AA Lithium batteries.

Mechanics
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 prevents various organisms from growing on the sensor and interfering with data.

Questions & Answers
What are the total dimensions of the miniWIPER and miniDOT logger once the wiper has been installed?
The specifications as well as a support drawing for the miniDOT with the miniWIPER installed can be found on the specification document. 
How much power does the miniWIPER draw from the miniDOT when deployed and will it reduce the number of samples recorded on the miniDOT logger?
The miniWIPER is powered by internal batteries, so there will not be any effect on the logger which has its own batteries. More information on the number of samples that can be obtained under varying conditions such as high or low water temperatures and wiping frequency, can be found on page 10 of the manual.
What is the expected battery life of the miniDOT wiper running at 6-hour intervals?
Page 10 of the manual states that the wiper battery would technically last 16 months, when wiped every 6-hours. However, it is recommended to wipe slightly more often than you think you may need, since biofouling can happen pretty quickly, given the right conditions. https://www.fondriest.com/pdf/pme_miniwiper_manual.pdf
Is the meter rated to a specific max NTU?
While high turbidity may affect fluorescence and DO levels, there is no specific concentration limit or interference level disclosed in the product specifications.
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