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Summary of Contents for Wuntronic COMMETER D3121
- Page 1 COMMETER D3121 Digital thermometer-hygrometer and datalogger Instruction manual...
- Page 2 Manual for use of thermometer-hygrometer COMMETER D3121 Instrument is designed for measurement and logging temperature and relative humidity with the possibility of displaying the dew point temperature. Measured values are displayed on a dual line LCD display and it is possible to store values into the non volatile memory. Then it is possible to transfer data to a personal computer.
- Page 3 Battery life depends on selected display refresh mode (see below). In FAST mode display is refreshed in shortest possible interval with highest current consumption. In dynamic mode display is refreshed in interval up to 5 s in case measured values remain stable. Refresh interval is shortened to approximately 0.7 s only if measured values change.
- Page 4 automatic logging was active before instrument is switched OFF, logging will continue with the same parameters after new switching ON. IE-COM-D3121-09...
- Page 5 Displaying of actual measured values In this mode is instrument anytime after switching ON. It is possible to enter this mode from other modes by pressing or by repeating pressing of MENU key. Temperature in °C is displayed on the upper LCD line and relative humidity in %RH is displayed on the lower LCD line.
- Page 6 Notice: if the battery voltage is low, audio indication is out of operation to reduce current consumption independently on this selection. Clearing of minimum and maximum memory of all values. Memory is cleared after pressing ENTER key. Clearing is confirmed by reading YES on the LCD lower display.
- Page 7 Alarm indication and setting It is possible to set lower and upper limit for each measured quantity. Breaking of the limit is indicated by blinking of the appropriate value on the display. If a new alarm was indicated (i.e. it was not active in the previous measurement), display starts to display the value out of limits.
- Page 8 Logging mode In logging mode measured values are stored to instrument internal memory. Memory is non volatile, i.e. if battery voltage drops or battery is disconnected, stored data will not be lost. Instrument can work in two logging modes: automatic mode - actual measured values are stored to memory in adjustable time interval. Storing of the first value is synchronised with internal real time clock , so the memorizing is performed at sharp multiples of minutes, hours and days.
- Page 9 Logging start with clearing memory and logging mode selection It is possible to clear memory only if logging is stopped. Modification of logging mode is enabled only after memory is cleared. Clearing of memory is optional part of the above procedure logging START.
- Page 10 Connection of the instrument to a personal computer For connection of the instrument to a personal computer is designed the communication cable (included in delivery). Connect the cable with 9pin connector Canon to computer serial port (COM1 or COM2). Connect cable other side (JACK 3.5mm) to the instrument. During time instrument is connected to the computer, there is a reading PC on the LCD display and measurement nor logging is interrupted.
- Page 11 The PC software for the instrument Installation of Windows software Software is designed for computer with operational system Windows, version Windows 98 or newer. There is approximately 5MB free space required on the hard disk. A free serial port is required for communication with the instrument.
- Page 12 Buttons on tool bars (left to right) From disk opens file with measured values stored on disk From instrument reads measured values from instrument and store them to disk Table displays table of measured values Graph displays time graph of measured values Print prints table or graph to printer Exit...
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