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Rev. 05/05
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DICKSON
Operating Instructions
Note: The loggers have a continuous display that cannot be disabled. Dual variable models such as the
TM320/TM325 and SM325 will toggle between Temperature and Humidity or two Temperature readings
automatically. The SM320/325 models will read PROB on the display if the Thermocouple is not connected.
Save
Pressing this button will download any data stored in the logger to the removeable memory card. STORE will
appear on the display momentarily and the counter will start counting down from 100. DO NOT remove the
memory card until STORE is no longer in the display and the counter has reached zero.
Alarm
Pressing this button will silence the alarm. Holding this button down for about 5 secounds will toggle
between Fahrenheit and Celsius. (Alarm parameters can only be set in DicksonWare™.)
MIN/MAX
Pressing this button will start the Min/Max display cycle.
Clearing MIN/MAX Values
Holding the “MIN/MAX” and “ALARM” buttons down together until “clr” appears on display will clear the
stored minimum and maximum values. The Min and Max displayed by the logger will be the minimum and
maximum values sensed since it was last cleared.
Note: DicksonWare™ will show the minimum and maximum values of the downloaded data. These could
be different than that displayed on the unit itself. For
Example: Your logger is set for a 2 minute sample which is good for about 11 days. After 5 days you clear
MIN/MAX. After another 6 days you download the logger. The Min/Max displayed by the logger will be the
MIN/MAX for the last 6 days. The MIN/MAX shown by DicksonWare™ will be the Min/Max for the last
entire 11 days. Dew point MIN/MAX in the TM320 and TM325 models are not updated unless dew point is
enabled. (See Software Setup Instructions)
Battery Replacement
To replace the batteries (4 “AA” alkaline) remove the screw on the back of the case.
Getting Started
• Install the DicksonWare™ Software.
• Connect the cable (supplied with the software) to the logger and to a working serial or USB port on
your computer.
• Click the Setup button. When the setup window appears, all elds should be automatically lled
in, this will conrm that DicksonWare has recognized the logger. Should all elds remain blank, refer to
“No Communication” in the Trouble Shooting section of this manual. Once DicksonWare™ recognizes the
logger, press the Clear button. This will delete all data currently stored.
Note: Make sure thermocouple probes are connected for SM320/SM325 models.
• The logger is now sampling and ready for use. The default sample interval is 1 minute. You may choose
to change Default settings for sample interval and start-date and time. When changing these settings,
the logger will automatically go through the clear process to accept your changes.
Note: To achieve longer battery life during operation, use a less frequent sample rate, disconnecting the
unit form the USB port when not downloading data, limiting the frequency of memory card transfers, and
NOT inserting the memory card unless downloading.