Table of Contents
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Delivered items
Area of application
Operating principle
Power supply
6
3. Product description
3.1. Delivery configuration
The scope of delivery encompasses:
•
DT4227 UI
•
4 pc. mounting clamps (enclosed in a nylon bag)
•
documentation:
this operating instructions manual
warranty
3.2. Type designation
3.3. Operating principle
The DT4227 UI (PS) Process Indicator enable process variable
0-20 mA, 4-20 mA, 0-10 V, 0-5 V, 2-10 V to be displayed in
engineering units ont he control panel.
Any optional display range can be assigned to the input signal range.
Large 5 digits LED display make process value easily visible at a
distance.
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.
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, display scaling,
decimal point position, display refresh rate, etc. are stored in FRAM.
The settings are protected by a two-level password against
unauthorized manipulation.
The instrument has two power supply version:
DT4227 UI
DT4227 UI PS
24 VDC power supply
230 V AC/DC power supply
DT4227 UI (PS)
20200205-V0
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