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PG. 17
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CHAPTER 3: MINIPAR LOGGER
3.1 Overview
All miniPAR Logger measurements are saved in files on the SD card inside the miniPAR Logger.
The files are transferred to a HOST computer via a USB connection where the miniPAR Logger
appears as a “thumb drive”. Measurements may be plotted by the miniPARPlot program and files
concatenated by the miniPARConcatenate program. The miniPAR Logger itself is controlled by the
miniPARControl program. Customers are required to open the logger each time measurements are
transferred to the HOST computer. This
chapter describes the miniPAR Logger’s internal features.
3.2 Opening and Closing the miniPAR Logger
The miniPAR Logger’s circuitry is contained in a waterproof housing that must be opened.
Unscrewing the white pressure housing from the black end cap opens the miniPAR Logger.
This is
similar to opening a flashlight. Turn the white pressure housing counterclockwise
relative to the black
end cap. Close the miniPAR Logger by reversing this procedure after
being sure that the o-ring is
free from debris. If debris is found, then wipe it off with a clean,
lint-free cloth. PME recommends
Kimtech Kimwipes for this application. Lubricate the o-ring
occasionally with silicone oil intended for
buna-N o-ring material.
When closing the miniPAR Logger, inspect the o-ring and the interior of the white pressure
housing
for debris. Lubricate the o-ring, and screw the white pressure housing onto the black
end cap until
the white pressure housing just touches the black end cap. Do not tighten!
The miniPAR Logger
tends to get a little tighter during deployment.
If you cannot open the miniPAR Logger by yourself, then find another person with strong
hands. This
person should grip the black end cap while the other person turns the white
pressure housing.
3.3 Electrical Connections and Controls
Removal of the cover reveals the miniPAR
Logger’s
connections and controls, shown here.
The
LED Light
is a LED that can display either red or
green light. This is used to indicate the different features
described in Chapter 1 of this manual.
The
Logger Control Switch
controls the miniPAR
Logger’s mode:
•
R
ECORD
:
When the switch is in this position the
miniPAR Logger is recording measurements.
•
H
ALT
:
When the switch is in this position the miniPAR
Logger is not recording and is sleeping at low power.
