Related Manuals for PME miniDOT
Summary of Contents for PME miniDOT
- Page 1 Precision Measurement Engineering, Inc. • www.pme.com User’s Manual 2018 Precision Measurement Engineering, Inc. (760) 727-0300 www.pme.com...
- Page 2 This warranty is void if, in our opinion, the miniDOT Logger has been damaged by accident, mishandled, altered, or repaired by the customer, where such treatment has affected its performance or reliability.
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Page 3: Safety Information
This gas will likely exit via the same location where the water entered, but not necessarily. The miniDOT Logger is designed to release internal pressure, as the black end cap is unscrewed, prior to the disengagement of the black end cap threads. -
Page 4: Table Of Contents
2.1 Overview and Software Installation 2.2 miniDOTControl 2.3 miniDOTPlot 2.4 miniDOTConcatenate Chapter 3 miniDOT Logger 3.1 Overview 3.2 Opening and Closing the miniDOT Logger 3.3 Electrical Connections and Controls 3.4 Battery Replacement 3.5 Installing Copper Mesh or Plate Precision Measurement Engineering, Inc. -
Page 5: Chapter 1 Quick Start
Logger prior to deploying it. At the end of the deployment period, open the miniDOT Logger and connect it to a HOST computer via the USB connection. The miniDOT Logger will appear as a ‘thumb drive’. Your... -
Page 6: A Few Details
10 minutes (or at some other interval you may have set using the miniDOTControl program). 3) Inspect the o-ring seal for debris. 4) Close the miniDOT Logger by screwing the white pressure housing back onto the black end cap. 5) Deploy the miniDOT Logger. - Page 7 Time – All miniDOT Logger times are UTC (formerly known as Greenwich mean time (GMT)). The miniDOT Logger internal clock will drift in the <10 ppm range (< about 30 seconds/month) so you should plan to connect it occasionally to a HOST computer having an Internet connection.
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Page 8: Overview General Maintenance
It is still possible that your device doesn't support OTG or that it does support OTG but will either not see miniDOT as a local drive or will not control miniDOT. Please test your device with a miniDOT Logger prior to attempting to upload while in the field. - Page 9 >12 >8,000 Keep a general record of the miniDOT Logger’s number of samples. It is not possible to accurately tell the charge state of a lithium battery by measuring its terminal voltage. If you have a general idea of the number of samples already obtained on a battery, then you can make a guess as to how many more samples remain.
- Page 10 When replacing batteries use only fresh batteries. Don’t mix battery types. If one battery differs in type or charge level from the other and the miniDOT Logger runs them to full discharge, then one battery may leak. SEE SECTION 3.4 FOR CAUTION ON BATTERY PLACEMENT.
- Page 11 Coin Cell Battery Life – The miniDOT Logger uses a coin cell battery for backup of the clock when the power is switched off. This coin cell battery will supply many years of clock operation. Should the coin cell battery discharge, then it must be replaced by PME. Contact PME.
- Page 12 Loggers are more easily seen.) The miniDOT Logger’s black end cap is heavy and the miniDOT Logger will tend to flip so that this end is down. Prevent this somehow. The miniDOT Logger must be placed in the bucket with the black end cap upwards. Otherwise bubbles will accumulate in the black end cap area and miniDOT Logger will not sense the DO in the water correctly.
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Page 13: Chapter 2 Software
Storage When Not in Use – Remove the batteries. Keep the black end covered with the cap supplied by PME. If the cap is lost, then cover the black end cap with aluminum foil. There may be a calibration effect of ambient lighting so attempt to keep ambient light from reaching the sensing foil as much as possible. -
Page 14: Minidotcontrol
If this program displays its graphical user interface, then the JRE is installed. If not, then the JRE can be downloaded via the Internet from http://www.java.com/en/download/windows_xpi.jsp At this time the miniDOT Logger is supported on the Windows operating systems, but may also operate on Macintosh and perhaps Linux. 2.2 miniDOTControl Begin program operation by clicking “miniDOTControl.jar”. -
Page 15: Minidotplot
Internet time server’s time and the miniDOT Logger’s internal clock will be displayed. If more than a week has passed since time was last set, then the miniDOT Logger’s clock will be set and the checkmark icon will appear. If the HOST computer is not connected to the Internet, then no time services will occur. - Page 16 The miniDOTPlot program plots the files recorded by the miniDOT Logger. The program reads all the miniDOT Logger files in a folder, except the CAT.txt file. The program will also compute air saturation from the dissolved oxygen measurements. To do this, the program must know the air pressure and salinity.
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Page 17: Minidotconcatenate
The miniDOTConcatenate program reads and concatenates the files recorded by the miniDOT Logger. This program produces a CAT.txt file in the same folder as selected for the data. The CAT.txt file contains all the original measurements and contains two additional statements of time and air saturation. -
Page 18: Chapter 3 Minidot Logger
Enter elevation or barometric pressure. Enter water salinity. Select the folder that contains the files recorded by the miniDOT Logger. If the miniDOTPlot program is run directly from the miniDOT Logger, then the program will suggest the folder located on the miniDOT Logger. -
Page 19: Opening And Closing The Minidot Logger
This is similar to opening a flashlight. Turn the white pressure housing counter clockwise relative to the black end cap. Close the miniDOT Logger by reversing this procedure after being sure that the o-ring is free from debris. Lubricate the o-ring occasionally with silicone oil intended for buna-N o-ring material. -
Page 20: Battery Replacement
Record – When the switch is in this position the miniDOT Logger is recording measurements. Halt – When the switch is in this position the miniDOT Logger is not recording and is sleeping at low power. The USB Connection allows communication between the miniDOT Logger and an external HOST computer. -
Page 21: Installing Copper Mesh Or Plate
Install fresh batteries with the (+) position the same as the removed batteries. The (+) position is also marked on the inside of the battery holder. The miniDOT Logger’s LED Light should flash to indicate that the software is beginning operation within a second or two after you complete the battery installation. - Page 22 3. Install the three pan head screws included in the kit. Gently tighten. CAUTION: Environments where debris can get trapped inside the sensing area should be avoided when using this product. PME recommends using the Cu plate in such environments.
- Page 23 2. Position the Copper Plate faced down so that the notches in the Copper Plate perfectly align over sensing foil and over the screw holes. 4. Install the three pan head screws included in the kit. Gently tighten. Enjoy your new miniDOT! Precision Measurement Engineering, Inc. (760) 727-0300...
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