Datcon DT4220 E Series, Руководство по эксплуатации

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DT4220 E
8
20180619-V0
Operating principle The input current or voltage to be measured is led to the 23 bit A/D
converter through a protection and signal condition circuit.
The digital output signal of the A/D converter is processed by a
microcontroller.
The microcontroller drives the 5 digit LED display, processes the front
panel membrane keypad, drives the limit relays, the analogue output
and the communication output.
Easy on-site configuration through the front panel membrane keypad
is a major advantage of the microcontroller-based technology. The
configuration parameters: input signal selection, signal filtering,
display scaling, decimal point position, display refresh rate, limit
modes, limit values, etc. are stored in FRAM. The settings are
protected by a two-level password against unauthorized manipulation.
Power supply The instrument has two power supply version:
DT4220 E xx xx xx:
19-50 VDC / 19-35 VAC 3 W / 3.5 VA
DT4220 E xx xx xx PS : 90-250 V AC/DC 3.5 VA / 3 W