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Manual abstract: user guide VAISALA QMD202DATASHEET
Detailed instructions for use are in the User's Guide.
[. . . ] www. vaisala. com
Vaisala Fixed Display QMD202
Features/Benefits
Local User Interface for MAWS
The HydroMet system can be equipped with the QMD202 display and keyboard unit at the installation site where the operator needs to see the measurement values locally and insert observations or reference data into the system. [. . . ] Several lines of alphanumeric data can be shown. The full display size expressed in characters is 20 x 6 (width x height). The displayed data is sent as reports to the display. The contents, format, and updating intervals of these reports are user-configurable. The update interval can be anything between 1 second and 24 hours.
Installation Outside the Enclosure
The QMD202 unit can also be installed outside the MAWS enclosure via the RS-232 or the full-duplex RS-485 connection. The RS-485 connection together with a DSI485 module installed into the MAWS data logger allows installations up to 1000 meters from the logger.
Technical data
Electrical
Input voltage Vin RS232/485
Mechanical
8 . . . 18 VDC 3. 3 and 5. 0 VDC powered from the MAWS data logger Dimensions Weight Mounting Enclosure material LCD Display Size (width x height) 127 x 95 x 29 mm 230 g NS35 DIN rail foot Aluminium 20 x 6 characters
SPI
Power consumption SPI mode, backlight OFF 20 mW SPI mode, backlight ON 85 mW RS485 mode, backlight OFF 96 mW @ 12 V RS485 mode, backlight ON 252 mW @ 12 V RS232 mode, backlight OFF 132 mW @ 12 V RS232 mode, backlight ON 276 mW @ 12 V Interface RS-232 / RS-485 / SPI Connector for RS-232, RS-485 and power supply 8-pin M12 RS-232 1200, 2400, 4800, 9600 bps (default 9600 bps) RS-485 Full duplex, non-isolated, 1200, 2400, 4800, 9600 bps (default 9600 bps) SPI Connected to and powered by the MAWS data logger via a 10-wire flat cable Communication distances RS-232 30 m RS-485 1000 m SPI Inside the MAWS enclosure
Environmental
Operating temperature Storage temperature CE Compliant Vibration -25 . . . +60 °C IEC(EN)-61326-1, For use in industrial locations IEC 60068-2-6, level 2 g
Example of QMD display.
For more information, visit www. vaisala. com or contact us at sales@vaisala. com
Ref. [. . . ] All specifications -- technical included -- are subject to change without notice. [. . . ]
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