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Isolation amplifier


  • Galvanically separated input, output, and supply
  • Bipolar current / voltage input
  • Signal conversion
  • Current and voltage output
  • 24 VDC supply or universally supplied
  • Applicable in PELV/SELV circuits
  1. Overview +

  2. Technical details +

  3. Accessories +

Advanced features

  • Programmable input and output ranges using internal DIP-switches.
  • Front panel fine adjustment of 0 and 100% values for special ranges.


  • Galvanic separation of analog signals.
  • Measurement of floating signals.

Technical characteristics

  • Analog signal conditioning with microprocessor based gain and zero offset with a fast response time of less than 25 ms.
  • Signal conversion within the ranges: -250...+250 VDC or -50...+50 mA on the input and 0...10 (20) VDC and 0...20 mA on the output.
  • Galvanically separated between input, supply, and output.
  • 2-wire transmitter supply and a reference voltage of 2.5 VDC, max. 15 mA for short circuit-protected supply of potentiometers.
  • Buffered voltage output 0...20 V, 10 mA.
  • The output can be ordered for standard 0/4...20 mA, and 0/1...5mA or special currents and selectable voltages within the signal range 0...1 VDC or and ranges 0...10 VDC.
  • Output signal reversal.
  • Mounting for a standard 11-pole socket which can be adapted for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.

Environmental Conditions

Operating temperature -20°C to +60°C
Calibration temperature 20...28°C
Relative humidity < 95% RH (non-cond.)
Protection degree IP50

Mechanical specifications

Dimensions (HxWxD) 80.5 x 35.5 x 84.5 mm (D is without pins)
Weight DC / universally supplied 125 g / 165 g

Common specifications


Supply voltage 19.2...31.2 VDC
Supply voltage, universal 21.6...253 VAC, 50...60 Hz or 19.2...300 VDC
Max. required power ≤ 2.4 W (2284--D) ≤ 2.5 W (2284--P)

Isolation voltage

Isolation voltage, test / working 3.75 kVAC / 250 VAC

Response time

Response time (0...90%) < 25 ms
Signal / noise ratio Min. 60 dB
Effect of supply voltage change < 0.005% of span / VDC
2-wire transmitter supply (pin 7...5) 19...28 VDC / 20...0 mA
Auxiliary voltages: Reference voltage 2.5 VDC ±0.5% / 15 mA
Temperature coefficient < ±0.01% of span / °C
Linearity error < 0.1% of span
EMC immunity influence < ±0.5% of span

Input specifications

Common input specifications

Max. offset 50% of max. value

Current input

Measurement range -50...+50 mADC
Min. measurement range (span) 0.53 mADC
Input resistance Nom. 50 Ω

Voltage input

Measurement range -250...+250 VDC
Min. measurement range (span) 27 mVDC
Input resistance >1 MΩ...<10 MΩ

Output specifications

Current output

Signal range 0...20 mA
Min. signal range 4 mA
Load (@ current output) ≤ 1000 Ω
Load stability ≤ 0.01% of span / 100 Ω
Current limit 23...28 mA
Voltage output through internal shunt See manual for details

Observed authority requirements

EMC 2014/30/EU
LVD 2014/35/EU
EAC TR-CU 020/2011
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