Bipolar Isolation Amplifier DB 68

Isolation and Conversion of Fixed Range Bipolar and Unipolar Standard Signals

The Isolation Amplifier DB 68 is used for isolation and conversion of bipolar and unipolar standard signals.

  • Cost optimized design
    Economical separation for standard applications
  • Only 60 mm installation depth, 11.2 mm wide
    Can be installed in economical standard terminal boxes
  • Fixed ranges, easy to use
    Ready to use without any settings or adjustments
  • Zero/Span compensation on front panel
    for readjustment of sensor signal or measuring equipment
  • True 3-port separation
    Protection against erroneous measurements due to parasitic voltages or ground loops
  • Protective Separation acc. to EN 61140
    Protects service personnel and downstream devices against impermissibly high voltage
  • Unlimited use with 24 V AC/DC power supply
    Universally applicable for all measurement and industrial applications
  • 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)

The Isolation Amplifier DB 68 is used for isolation and conversion of bipolar and unipolar standard signals.

For applications where one signal combination only is used, the Isolation Amplifier DB 68 offers a cost-effective alternative.

A cross-connector for the auxiliary power supply ensures fast and easy installation. The slim housing with 11.2 mm width saves significant space on the DIN-rail. If required a measuring range compensation can be performed at the Zero/Scan potentiometers behind the front cover.

Analog signal processing guarantees precise measured values with short response times and outstanding signal reproduction at the output. Protective Separation and the 24 V AC/DC power supply make the DB 68 universally applicable for all measurement and industrial applications, as well as for building automation.

Technical Data

Input

Input signal ±10 V, ±5 V, ±20 mA, ±10 mA      see product line
0 to 10 V, 0 to 5 V, 0 to 20 mA
2 to 10 V, 1 to 5 V, 4 to 20 mA
Input resistance Voltage input
Current input
approx. 1 MOhm
approx. 5 Ohm
Overload Voltage input
Current input
≤ 250 V
≤ 200 mA

Ausgang

Output signal 0 to 10 V, 0 to 5 V, 0 to 20 mA      see product line
2 to 10 V, 1 to 5 V, 4 to 20 mA
Load Voltage output
Current output
≥ 2 kOhm
≤ 500 Ohm
Residual ripple < 10 mVrms

General Data

Transmission error < 0.2 % full scale
Temperature coefficient 1) < 0.02 %/K
Zero/Span Compensation ± 3 %
Cut-off frequency -3 dB 500 Hz
Response time T99 < 2 ms
Test voltage 3 kV AC, 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
Protection against electrical shock 2) Protective separation according to EN 61140 by reinforced insulation in accordance with EN 61010–1 up to 300 V AC/DC for overvoltage category II and pollution degree 2 between all circuits.
Ambient temperature  Operation
Transport and storage
–20 °C to +60 °C    (–4 °F to +140 °F)
–35 °C to +85 °C    (–31 °F to +185 °F)
Power supply 24 V AC/DC, ± 15 % AC: 48 to 62 Hz, ca. 2 VA
DC: approx. 0.7 W
EMC 3) EN 61326 -1
Construction 11.2 mm (0.44") housing, protection class: IP 20
mounting on 35 mm DIN rail acc. to EN 60715
Weight Approx. 50 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

Db68

Dimensions

GehaeuseTinyZeroSpanLed

Terminal assignments
Wire cross-section max. 2,5 mm²

1 Input + 5 Output +
2 Input - 6 Output -
    7 Power supply +
    8 Power supply -

Downloads

Product line

Devices Order No.
  DB 68 P - X X
Bipolar Isolation Amplifier DB 68 P Input 0 to 10 V   0  
2 to 10 V   6  
± 10 V   1  
0 to 5 V   3  
1 to 5 V   7  
± 5 V   2  
0 to 20 mA   8  
4 to 20 mA   9  
± 20 mA   4  
± 10 mA   5  
Output 0 to 10 V     6
2 to 10 V     7
0 to 5 V     5
1 to 5 V     8
0 to 20 mA     2
4 to 20 mA     4
Cross-connector (2 pcs.)
for looping through the power supply for up to 10 units, splittable
DZU 0801
Subject to change!
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