DT4220 Process Indicator

Product features

  • 0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V inputs
  • 5 digit LED display, 14.2 mm character height colors: red, yellow, green, blue (optional)
  • 0.03% accurary
  • 0-20 mA / 4-20 mA, galvanic isolated output (optional)
  • 2 limit relay output (optional)
  • RS232 / RS485 communication, Modbus RTU protocol (optional)
  • 96 × 48 mm panel instrument
  • 24 VDC ±10% or 230 V AC/DC ±10% power supply
  • Protection IP65 (front), IP30 (rear)

Type designation

DT4220 process indicator-type designation

Product description

The DT4220 … Process Indicator enable linear process variables (0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V) to be displayedin engineering units on the control panel. Any optional display range can be assigned to the input signal range. Large 5 digit, 14.2 mm character height LED display (colors: red, yellow, green, blue (optional)) make process value easily visible at a distance.
The instrument is available with the following output options:

  • 2 normally open relay contacts (SPST) for limit switching or for simple control tasks
  • 0-20 mA / 4-20 mA galvanic isolated scalable current output *
  • RS232 / RS485 galvanic isolated communication output with MODBUS RTU slave protocol *
  • transmitter supply galvanic isolated 15 VDC 20 mA*

(* either analogue or communication or transmitter supply option can be implemented at the same time)

The functional parameters can be set by push-buttons on the front panel of the device, through a simple menu system: input selection, averaging of input signals, scaling, display frequency, limit values, limit operating modes, scaling the analogue output, etc. The settings are protected by a two-level password against unauthorised manipulation.
The instruments has two power supply versions: 24 VDC ±10% (DT4220 …) or 230 V AC/DC ±10% (DT4220 …PS).
The DT4220 … is housed in a DIN standard 96 × 48 mm ABS case with IP65 protection from the front and IP30 protection from the back side, for installation on the control panel.

Technical specifications

Safety data:
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:
Pollution level:2
Measurement category:II
Input parameters:
Input signal:DC current or DC voltage
Measurement range:0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V
Overrange:±50 mA (current input), ±200 V (voltage input)
Sampling:12 measurement / sec.
Number of averaged samples:1 / 2 / 4 / 8 / 16 / 32 (selectable)
Error of displayed value:< 0.03% @ Ta = 23°C ± 2°C
Output parameters:
Analogue output (optional):
Output type:1 active or passive DC current (scalable)
Range:0-20 mA / 4-20 mA
Burden:600 ohm (max.)
Error:< 0.03% @ Ta = 23°C ± 2°C
Limit outputs (optional):
Outputs:2 NO SPST relays
Contact rating:30 VDC, 3 ADC / 240 VAC, 3 AAC
Transmitter supply (optional):
Output voltage:15 VDC ± 10% @ 30 mA,16 VDC ± 10% @ 4 mA
Output current:30 mA max.
Isolation voltage:0.5 kV
Communication interface (optional):
Type:RS232 or RS485 (isolated)
Protocol:Modbus RTU slave
Baud rate:300 / 600 / 1200 / 2400 / 4800 / 9600 Baud
Display:5 digit (+values), 4 digit (-values), negative sign, decimal point
Display unit:5 digit LED, 14.2 mm character height
Display colors:red, yellow, green, blue (optional)
Manual controls:
Manual controls:3 membrane push-buttons on the front cover
Power supply:
Power supply:24 VDC ±10% (DT4220 ...)
230 V AC/DC ±10% (DT4220 ...PS)
Consumption:3.5 W / 3 VA
Ambient conditions:
Operating temperature range:0-60 °C (-20 - 60 °C for customer request)
Relative humidity:90% (max., non-condensing)
Place of installation:cabinet
Electromagnetic compatibility (EMC)
accordance with the standard EN 61326
Immunity:industrial area
Noise emission:Group 1, Class B
General data:
Housing:panel instrument
Connection:plug-in screw terminal / push-in direct connection
Connection cable:0.25–1.5 mm2 (max.)
Dimensions:96 × 48 × 45 mm (width × height × depth)
Weight:0.15 kg
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 productOperating Instruction

Application examples

Analog output option:

DT4220 process indicator-application example-analog output option

RS232 communication interface option:

DT4220 process indicator-application example-RS232 option

RS485 communication interface option:

DT4220 process indicator-application example-RS485 option

Shematic for units of RS-485 communication:

DT4220 process indicator-application-example 4

Type selection and ordering

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