- Display in engineering units
- 4-20 mA loop-powered
- 3 1/2 digit LCD display
- 15.2 mm character height
- Easy on site configuration
- IP 65 (front) and IP 30 (rear) protection
The DT420 E Process indicators enable linear process variables to be displayed in engineering units on the control
panel. The unit is loop-powered from 4-20 mA signals, dropping less than 2 V at 20 mA.
The process indicators housed in a DIN standard 96 × 45 mm ABS case with IP 65 protection from the front and IP 30 protection from the back side. Large 3 ½ digit 15 mm character height liquid crystal display make process variables easily visible at a distance.
A label defining the appropriate engineering unit is attached to the right of the display. The unit can be set up to reverse the display „direction” (i.e. to produce a decreasing displayed value for a rising signal input) and to display a decimal point if required.
Easy on-site configuration through the front panel keypad is a major advantage of the microcontroller-based technology.
The settings of zero and end-values are non-interactive, making the configuration process rapid and simple.
The configuration parameters: scaling, decimal point position, display refresh-rate, signal filtering, etc. are stored in EEPROM.
A two level password protects the settings from unauthorised changes.
|The connection terminals of the supply voltages are isolated from each other, the isolation is in compliance with the standard EN 61010-1, taking into consideration the following:|
|Input signal:||DC current|
|Measurement range:||4-20 mA|
|Sampling rate:||15 measurement / sec.|
|Number of averaged samples:||1 / 2 / 4 / 8 / 16 / 32 (selectable)|
|Drop:||< 2.5 V @ I=20 mA|
|Accuracy:||0.02% @ Ta = 23 °C ±2 °C|
|Temperature-coefficient:||±20 ppm / °C|
|Display:||3 1/2 digit, 7 segments, decimal point and negative sign|
|Display unit:||LCD, 15.2 mm character height|
|Display value assigned to 4 mA:||anywhere within the range|
|Display value assigned to 20 mA:||anywhere within the range|
|Decimal point:||its position can be selected, or it can be switched off|
|Display refreshing time:||0.1; 0.3; 0.5; 1.0; 2.0 sec. (selectable)|
|Manual controls:||3 membrane push-buttons on the front cover|
|Power supply:||4-20 mA loop-powered, reverse polarity protected|
|Operating temperature range:||0 - +60 °C (-20 - +60 °C for customer request)|
|Relative humidity:||90% (max., non-condensing)|
|Place of installation:||cabinet, control panel|
|Electromagnetic compatibility (EMC)
accordance with the standard EN 61326
|Noise emission:||Group 1, Class B|
|Connection:||push-in direct connection|
|Connection cable:||0.25-1.5 mm2 (max.)|
|Dimensions:||96 × 48 × 39 mm (width × height × depth)|
|Protection:||IP 65 (front), IP 30 (rear)|
|Detailed information see in operating instructions. The Manufacturer maintans the right to change the technical data!|
|Leaflet of product|