DT4227 Process Indicator

Product features

  • 0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V inputs
  • large, 5 digit LED display (57 mm character height)
  • 0.03% accuracy
  • 0-20 mA / 4-20 mA, galvanic isolated output (optional)
  • 2 limit relay output (optional)
  • RS232 / RS485 communication, Modbus RTU protocol (optional)
  • 18-40 V AC/DC or 180-250 V AC/DC power supply
  • 288 × 96 mm panel instrument
  • Protection IP 52 (front), IP 20 (rear)

Product description

The DT4227 … Process Indicator enable linear process variables (0-20 mA / 4-20 mA / 0-10 V / 2-10 V / 0-5 V) to be displayed in engineering units on the control panel. Any optional display range can be assigned to the input signal range.
Large 5 digit, 57 mm character height LED display make process value easily visible at a 30 m distance.

DT4227 process indicator distance of visibility

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: 18-40 V AC/DC (DT4227 …) or 180-250 V AC/DC (DT4227 … PS).
The DT4227 … is housed in a DIN standard 288 × 96 mm ABS case with IP 52 protection from the front and IP 20 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:500 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:
Display:5 digit (+values), 4 digit (-values), negative sign, decimal point
Display unit:5 digit LED
Character height:57 mm
Display color:red
Manual controls:
Manual controls:3 membrane push-buttons on the front cover
Power supply:
Supply voltage:18-40 V AC/DC (DT4227 ...)
180-250 V AC/DC (DT4227 ... 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 61326-1
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:288 × 96 × 78 mm (width × height × depth)
Panel cut off:282 × 92 mm (width × height)
Weight:0.7 kg
Protection:IP 52 (front), IP 20 (rear)
Detailed information see in operating instructions. The Manufacturer maintans the right to change the technical data!

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