Advertisement
Machine Translated by Google
4. Operation instructions:
4.1 Power on and off: Press
the I key to power on or off the thermometer and hygrometer.
4.2 Method of expressing remaining memory space: (DTM-322 model )
After powering on, a number will appear below the LCD, which represents the remaining recordable size of the instrument's
memory. As shown in the picture on the right: it represents the remaining 16,000 pieces of data available for use in the memory.
4.3 Connect the temperature thermocouple: ( DTM-321/DTM-322 model )
Insert the connector plug of the thermocouple temperature measuring rod into the connector at the top of the thermometer and hygrometer. Please pay attention to the positive and negative polarity of the connector.
4.4 Temperature unit selection: Press
the "°C/°F" key to select the temperature unit displayed in °C or °F.
4.5 Lock the reading value:
Press the "HOLD" button to lock the displayed reading value, and press it again to unlock the reading value; when the reading value is locked, the ÿREL, MAX/MIN and "°C/°F" functions
will not be executed.
4.6 Time function: ( DTM-322 model )
Press the " TIME " key to switch to display time, which will display the year, month, day and time. Press any key to leave the time display mode and restore the reading value display mode.
Note: If the time is
2000/01/01 00:00 every time it is turned on, it means that the clock battery needs to be replaced. Remove the bottom cover and replace the 3V button battery.
4.7 Timer function: ( DTM-320 model )
Press the "TIMER" button to start the timing function, which is displayed as minutes: seconds (m:s). Press it again to stop the timing action; press it again to continue the timing action, so
that the entire timing program can be repeated. When the timer exceeds 59 minutes and
59 seconds, the display unit will change to hours: minutes (h:m). When the "TIMER" button is pressed for 2
seconds, the timer will be reset.
4.8 Relative reading function (return to zero): ( DTM-320 model )
When the "REL" key is pressed , the temperature and humidity meter will record the current reading and display the difference between the current reading and the memory reading. Press
again to deactivate this function.
4.9 Memory function: ( DTM-322 model )
Press the "REC" button to start recording according to the set recording time interval. After starting recording, the "REC" symbol
will appear in the upper right corner of the LCD. Pressing the "REC" key again will stop recording, thus completing a set of data.
When the memory is full, the "REC" symbol will flash once a
second. To view the memory contents, you need to use the included RS232 cable and software to transfer the memory contents
to the computer. If the memory is full and you want to record again, you must clear the memory first. To clear the memory, first
turn off the phone, then press and hold "REC", then press and hold the power button for two seconds, and then release all keys. ,
at this time "CLR" will appear on the LCD (as shown on the right), indicating that the memory is being cleared. After the clearing is
completed, "CLR" will disappear, and the "REC" symbol will stop flashing and disappear.
https://tecpel.com
4
Instructions for use
"CLR" appears, indicating that the memory is
being cleared.
Advertisement
