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DT9000 N
Area of application
Operating principle
Power supply
20180614-V0
3.2. Principle of operation
DT9000 N is an process indicator enable linear process
variables to be displayed.Two isolated outputs are available
with different operating modes for limit signaling or for
simple control purposes.
DT9000 N is housed in a moulded polycarbonate case
hauseproof to IP65 for installation in the field or on the
control panel.
The 4-20 mA current flows through a measuring resistor
and is converted by a 16 bit A/D converter into digital value.
The digital value is processed by a microcontroller. The
user may set up the the configuration parameters: scaling,
decimal point position, display refresh rate, signal filtering,
limit modes, limit values, etc. through the front panel
membrane keypad and the parameters stored in EEPROM.
A two level password protects the settings from
unauthorised changes.
Large 4 ½-digit, 20.5 mm height liquid crystal display make
process variables easily visible at a distance. A label
defining the appropriate engineering unit may be attached
to the right of the display.
DT9000 N has two optically isolated transistor outputs for
limit signaling or for simple control purposes.
DT9000 N is loop-powered from 4-20 mA signal, dropping
less than 2 V at 20 mA.
7
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