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Isolation Amplifier DN 2400

Isolation and Conversion of Process Signals in Standard Applications

The Isolation Amplifier DN 2400 is used for isolation and conversion of 0 to 20 mA, 4 to 20 mA and 0 to 10 V standard signals.

  • Cost optimized design
    Economical separation for standard applications
  • Calibrated signal setting
    Input and output range can be set by using DIP switch – without any further adjustment
  • Universal power pack for 20 to 253 V AC/DC
    Applicable world-wide for all common supply voltages
  • 3-port isolation
    Protection against erroneous measurements due to parasitic voltages or ground loops
  • Ultra-small-sized housing
    12.5 mm housing with plug-in screw terminal blocks
  • Maximum reliability
    No maintenance costs
  • 5 Years Warranty
    Defects occurring within 5 years from delivery date shall be remedied free of charge at our plant (carriage and insurance paid by sender)

Its high level of reliability and cost optimized design make the DN 2400 the first choice in its class!

Unique in its price class, the DN 2400 provides application flexibility thanks to the calibrated range selection and the new universal power pack.

The desired input and output range can be easily set by using DIP switch and due to the calibrated range selection no further adjustment is necessary.

The slim housing with 12.5 mm width saves space in the switch cabinet and facilitates by the practical plug-in screw terminal blocks the assembly. For range selection a simple housing unblocking is installed which makes it possible to reach easily all control elements on the mounting rail.

In cause of the new universal power supply for 20 to 253 V AC/DC the Isolation Amplifier DN 2400 is applicable world-wide for all common supply voltages.

Product line

Product line DN 2400
Devices Order No.
Isolation Amplifier, calibrated range selection DN 2400 AG

Technical Data


Input signal 0 to 20 mA, 4 to 20 mA, 0 to 10 V, calibrated switchabel
Input resistance Current input
Voltage input
22 Ohm
1 MOhm
Overload Current input
Voltage input
≤ 200 mA
Voltage limitation via 30 V Z-Diode,
max. continuous current 30 mA


Output signal 0 to 20 mA, 4 to 20 mA, 0 to 10 V, calibrated switchable
Load Current output
Voltage output
≤ 10 V (500 Ohm at 20 mA)
≤ 10 mA (1 kOhm at 10 V)
Offset 20 µA / 10 mV
Residual ripple < 20 mVrms

General Data

Transmission error < 0.3 % full scale
Temperature coefficient 1) < 150 ppm/K
Cut-off frequency -3 dB 1 kHz
Response time T99 0.7 ms
Test voltage 2.5 kV, 50 Hz, 1 min., Input against output against
power supply
Working voltage 2)
(Basic Insulation)
600 V AC/DC for overvoltage category II and pollution
degree 2 acc. to EN 61010-1
Ambient temperature Operation
Transport and storage
–10 °C to +60 °C   (+14 to +140 °F)
–20 °C to +80 °C  (-4 to +176 °F)
Power supply 20 to 253 V AC/DC, AC 48 to 62 Hz, approx. 3 VA
DC approx. 1.5 W
EMC 3) EN 61326 -1
Construction 12.5 mm (0.49") housing, protection type: IP 20
mounting on 35 mm DIN rail acc. to EN 60715
Weight Approx. 100 g
  1. Average TC related to full scale value in specified operating temperature range, reference temperature 23 °C
  2. For applications with high working voltages, ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
  3. Minor deviations possible during interference

Block diagram


Terminal assignments

  • 1 + Input current
  • 2 − Input current
  • 3 + Input voltage
  • 4 − Input voltage
  • 5 + Output
  • 6 − Output
  • 7 Power supply AC/DC
  • 8 Power supply AC/DC

Pluggable screw clamp terminals
Wire cross-section max. 2.5 mm², Multi-wire connection max. 1 mm² (two wires with same cross-section)

Subject to change!

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Please calculate 7 plus 2.