DwyerLog Logger Interface Software USER’S GUIDE Version 1.2x March 4, 2008 Dwyer Instruments, Inc 102 Indiana Hwy 212 Michigan City, IN 46360 Phone: (219) 879-8868 Fax: (219) 872-9057 http://www.dwyer-inst.
Table Of Contents Quick Start ..................................................................................................................... 4 Overview........................................................................................................................ 4 Connecting the Logger to Your PC................................................................................ 4 Setting Up the Logger To Record Data .........................................................................
GDL Temperature Humidity Logger with Display ........................................................ 21 Turning the GDL On and Off........................................................................................ 21 GDL Sample Screen.................................................................................................... 22 The GDL Summary Screen ......................................................................................... 23 GDL Graph Screen ...................................
DwyerLog User’s Guide Versin 1.2x 4/25 Quick Start Follow the procedure below to start using your data logger: 1. Connect the data logger to a free USB port on your computer. 2. Start the DwyerLog Interface Program. 3. From the Logger menu, select Setup. 4. Select the "Logging starts immediately when setup is complete" option. 5. Click Continue to start logging. The logger is now logging data. You can click on the has been logged.
DwyerLog User’s Guide Versin 1.2x 5/25 To select a logger click on one of the loggers on the list, and click the Connect button. Setting Up the Logger To Record Data To set your logger to start recording data, select Setup from the Logger menu. The setup options window is shown below. • Sample Interval (Total Recording Length): Select the sample interval from a predefined list of intervals. • Custom Interval: Add your own interval to the sample interval list.
DwyerLog User’s Guide Versin 1.2x 6/25 • Enable Data Rollover: Check this box to have the logger continuously record the data, overwriting earliest recorded data. When this box is not checked, logging is stopped when the logger memory becomes full. • Logging Control: Logging can start in three ways depending on the selection you make: • Logging starts when the Start button is pushed: Logging will start when the Start button is pushed for about 3 seconds.
DwyerLog User’s Guide Versin 1.2x 7/25 The checkbox to the left of the low/high alarms enables the alarm when checked, and disables the alarm when clear. Using the Software to Check Logger Status Selecting Status from the Logger menu brings up the Logger Status window. You can also bring up the status window by pressing the button on the toolbar.
DwyerLog User’s Guide o o o o o o o o Versin 1.2x 8/25 Idle, waiting for setup: The logger is not logging. It is waiting for a setup from the user. The logger's real time clock is active in this mode. Logging will start on button press: Logging has been setup to start when the logger's Start button is pressed. Logging will start at xxxx: Delayed logging. Logging has been selected to start at a future time. The logger is waiting for this time to arrive to start logging.
DwyerLog User’s Guide Versin 1.2x 9/25 Last Sample Pane The Last Sample pane shows the value of the last sample taken, for all the active channels. It also shows when the next sample will be taken. Ending the Logging Session There are a number of ways that the logging session can end: 1. When the logger memory becomes full, and data rollover was not selected during logger setup, the logger will automatically stop logging and enter the idle state. 2. Selecting End Logging from the Logger menu. 3.
DwyerLog User’s Guide Versin 1.2x 10/25 Logged data can be retrieved from the logger at any time. You do not have to stop the logging session to retrieve the data. The graph display will be blank if there are less than two data points logged. The listing window will be blank if there are no data points logged (as can happen during delayed logging, or when logging is set to start on button press).
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.
DwyerLog User’s Guide Versin 1.2x 12/25 • Clicking the button activates the sample marker function. When this function is active, clicking a point on the graph, marks this point, and shows the point values for all channels, at the specified time. An example of sample markers is shown above. • During zoom mode, you can use the vertical and horizontal scroll bars to move the graph around. • Clicking the button activates the zoom mode.
DwyerLog User’s Guide Versin 1.2x 13/25 The Data pane lists the data samples collected by the logger. If the data rollover check box in the setup window was cleared, the earliest data samples are listed. If the data rollover check box was checked, the latest data samples are listed. The column width of each column is adjustable by using the left mouse button and dragging the column to the desired width. icon next to a data sample indicates an alarm condition.
DwyerLog User’s Guide Versin 1.2x 14/25 shown below. • The filter can be disabled by checking the “No Data Filter” box. • Sample range filtering can be disabled by checking the “Don’t limit using xxxx” box for all the channels or for specific channels. Channels are selected by clicking on the channel pane. • Date range filtering can be disabled by checking the “Don’t Limit By Date” box. • The filter settings apply consecutively.
DwyerLog User’s Guide Versin 1.2x 15/25 1. From the Microsoft Excel application choose Open… from the File menu. 2. In the Open window, under Files of type:, select Text Files (*.prn, *.txt, *.csv). 3. Navigate to the directory where you saved the exported file. The file name should be listed in the window. 4. Select the file and click Open. When you first open the .csv file in Excel, the Date Time column will be in a strange format. To convert to a normal time and date format follow these steps: 1.
DwyerLog User’s Guide Versin 1.2x 16/25 To perform the calibration: 1. Select a stable and accurate reference instrument. It is best to use a reference instrument that has at least 2 to 4 times the accuracy of the logger you are calibrating. For instance, if the accuracy of the logger temperature channel is given as +/-1ºF, the accuracy of your reference instrument should be at least +/0.5ºF to +/-0.25ºF. 2. Make sure that both the logger and your reference instrument are reading the same stable source.
DwyerLog User’s Guide Versin 1.2x 17/25 not running. When the real time clock is stopped, and you setup your logger to log, the DwyerLog software automatically matches the logger clock to your computer’s clock. You can also manually set the logger’s real time clock, using the DwyerLog software To set the logger’s Real Time Clock, select Set Clock… from the Logger menu . Make sure that “Use Windows Clock” is unchecked, then enter the current date and time in the appropriate fields.
DwyerLog User’s Guide Versin 1.2x 18/25 MTL-30 Temperature Humidity Logger The MTL-30 is a self-contained, precision instrument for recording the temperature and relative humidity of the surrounding environment. The MTL-30 can store up to 43,344 temperature samples, or up to 21,672 of both temperature and relative humidity samples. In addition to Temperature and Humidity, the DwyerLog software computes and displays the Dew Point Temperature.
DwyerLog User’s Guide Versin 1.2x 19/25 MTL-30 Specifications 43,344 points for temperature only. 21,672 points for temperature, humidity and dew point. Visual over and under alarm indicator for temperature and humidity. Dew point Alarms alarms are not available User single point offset calibration is available through software for both Calibration temperature and humidity. Calibration is password protected.
DwyerLog User’s Guide Versin 1.2x 20/25 Replacing the MTL-20 Battery The battery level of the MTL-20 can be checked using the DwyerLog software, by opening the Logger Status window. It is suggested that the battery is replaced when the battery level reaches yellow. When the battery level reaches red, it is imperative that the battery is replaced as soon as possible. When the battery level is too low, the logger will stop logging automatically, resulting in data not being recorded.
DwyerLog User’s Guide Versin 1.2x 21/25 MTL-20 Specifications 43,344 temperature points. Visual over and under alarm indicator for temperature. User single point offset calibration is available through software. Calibration is password protected. Operating Temperature -40°F to 185°F (-40°C to 85°C)* -40°F to 185°F (-40°C to 85°C) Storage Temperature +/-100ppm @75°F Time Accuracy Temperature Accuracy +/-0.9°F (0.5°C) for the range of 0°F to 120°F (-17°C to 50°C) Temperature Resolution 0.01°F or 0.
DwyerLog User’s Guide Versin 1.2x 22/25 GDL Sample Screen There are three different screens that the user can switch between, using the View button. The Sample and Summary screen show the current status of the logger. The Graph screen shows a record of the logged temperature and humidity samples in memory. The Sample screen is shown below. This screen shown the current Relative Humidity, Temperature and Dew Point measurements.
DwyerLog User’s Guide Versin 1.2x 23/25 The GDL Summary Screen The Summary screen is shown below. The icons in the summary screen are identical to the icons in the Sample screen. The Summary screen shows: • The User Information: This 30 character text field is entered through the DwyerLog setup software, and can be any text that describes the logger • Logging Rate: Is the rate at which the data in memory was logged at. • Samples: Shows the number of samples stored in memory.
DwyerLog User’s Guide Versin 1.2x 24/25 When in the graph screen, you can use the Display - and Display + buttons to shift the graph left and right, respectively. Pressing and holding the Start button, while in the graph screen, returns the graph view to the last sample taken. When the logger is logging, the graph display is automatically updated as new samples are logged. GDL Buttons The GDL has five buttons as shown below. • Units: Use this button to change the displayed units between °F and °C.
DwyerLog User’s Guide 8. Versin 1.2x 25/25 Replace the GDL back cover and replace the 4 screws. GDL Specifications Text Display Graph Display Sample Point Capacity Alarms Calibration Operating Temperature Storage Temperature Time Accuracy Relative Humidity Range Relative Humidity Accuracy Relative Humidity Resolution Temperature Accuracy Temperature Resolution Dimensions Weight Power Source Battery Life Displays real time temperature, humidity and dew point.
