Manual
Table Of Contents
- Quick Start
 - Overview
 - Connecting the Logger to Your PC
 - Setting Up the Logger To Record Data
 - Custom Interval Setup
 - Alarm Setup
 - Using the Software to Check Logger Status
 - Ending the Logging Session
 - Powering Down the Logger
 - Loading Logger Data
 - Automatic Data Retrieval
 - Working With the Data Graph
 - Using the Zoom Feature
 - Data Listing Window
 - Using the Data Filter
 - Hiding or Viewing Channels
 - Exporting Logger Data
 - Printing the Logger Data
 - Calibrating the Logger
 - Setting the Calibration Password
 - Setting the Logger Real Time Clock
 - Data Security
 - Specifications
 - MTL-30 Temperature Humidity Logger
 - Replacing the MTL-30 Battery
 - MTL-30 Specifications
 - MTL-30 Logger Status LED
 - MTL-20 Temperature Logger
 - Replacing the MTL-20 Battery
 - MTL-20 Logger Status LED
 - MTL-20 Specifications
 - GDL Temperature Humidity Logger with Display
 - Turning the GDL On and Off
 - GDL Sample Screen
 - The GDL Summary Screen
 - GDL Graph Screen
 - GDL Buttons
 - Replacing the GDL Battery
 - GDL Specifications
 

DwyerLog User’s Guide  Versin 1.2x  11/25 
•  The graph plots each data channel using a different color and dot style. A small rectangular legend shows the color 
and the dot style of each channel. This legend can be moved by clicking the left mouse button while inside the 
legend and dragging the legend to where you want it to be. The legend can be turned ON and OFF by pressing the 
 button on the toolbar. 
•  There is an additional legend above each of the Y axis. This legend is the channel name drawn in the same color as 
the channel line on the graph. This legend helps identify which channel belongs to which axis. For instance, in the 
graph above, the Temperature in red and Dew Point in green correspond to the left Y axis, the Relative Humidity in 
blue corresponds to the right Y axis. 
•  The Cursor Location Markers show the cursor position on the graph. The position is shown on each of the axis in a 
slightly larger, bold text. The position indicators can be turned ON and OFF by pressing the 
 button on the 
toolbar 










