The 2-Channel Isolation Amplifier DN 26000 is used for isolation and conversion of 0/4 ... 20 mA and 0 ... 10 V, 0 … 5 V standard signals.
- Calibrated signal setting via DIP switch Input and output range can be set by using DIP switch – high precision without any further adjustment
- 5-Port Isolation Protection against erroneous measurements due to parasitic voltages or ground loops
- Extremely slim design 6.2 mm slim housing for a simple and space saving DIN rail mounting
- Power supply via In-Rail-connector allows fast and economical installation
- Protective Separation acc. to EN 61140 Protects service personnel and downstream devices against impermissibly high voltage
- 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)
 Datasheet |
| User Manual |
The Isolation Amplifier DB 6200 is used for isolation and conversion of bipolar and unipolar industrial signals.
- Easy selection of input and output range Input and output range for unipolar and bipolar signals can be easily set by using DIP switch
- Universal power supply for 20...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
- High bandwidth; high accuracy No distortion; no falsification of measured signal
- Protective Separation Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| User Manual |
The Bipolar Isolation Amplifier DB 64000 is used for isolation and conversion of bipolar and unipolar industrial standard signals.
- Calibrated signal setting via DIP switch Input and output range can be set by using DIP switch – high precision without any further adjustment
- High bandwidth; short response time No signal distortion; no falsification of measured signal
- Switchable Zero/Span compensation For readjustment of the sensor or field device
- 3-Port isolation Protection against erroneous measurements due to parasitic voltages or ground loops
- Extremely slim design 6.2 mm slim housing for a simple and space saving DIN rail mounting
- Optional In-Rail-Bus mounting rail connector allows for fast and economical installation
- Protective Separation acc. to EN 61140 Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| Ex and UL instructions |
| User Manual |
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)
| Datasheet |
| User Manual |
The Isolation Amplifier DK 8000 is used for isolation and conversion of customer-specific industrial signals.
- Customer-Specific Solutions Special Input ant output range on request
- Universal Power Supply 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
- High accuracy No falsification of measured signal
- Protective Separation Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| User Manual |
The Filter Isolation Amplifier DB 6230 is used for isolation and conversion of bipolar and unipolar industrial signals.
- Easy selection of input and output range Input and output range for unipolar and bipolar signals can be easily set by using DIP switch
- Universal power supply 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
- Selectable cut-off frequency; high accuracy No distortion; no falsification of measured signal
- Protective Separation Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| User Manual |
The function signal converter with 4 I/O ports and a switching output is used for acquisition, conversion and galvanic isolation of 0/4 to 20 mA, 0/2 to 10 V standard signals and binary I/O signals.
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The Inverse Isolation Amplifier DB 6250 is used for isolation and conversion of industrial signals with inverse characteristic.
- Easy realization of inverse transmission characteristic Inverse characteristic for unipolar signals can be easily set by using DIP switch
- 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
- High bandwidth; high accuracy No distortion; no falsification of measured signal
- Protective Separation Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| User Manual |
The Isolation Amplifier DN 2000 is used for isolation and conversion of 0 to 20 mA, 4 to 20 mA and 0 to 10 V standard signals.
- Calibrated signal setting Input and output range can be set by using DIP switch – without any further adjustment
- Universal Power Supply for 20 ... 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
- High accuracy No falsification of measured signal
- Protective Separation Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datenblatt |
| Bedienungsanleitung |
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)
| Datasheet |
| User Manual |
The Isolation Amplifier DN 25000 is used for isolation and conversion of 0/4 to 20 mA and 0/2 to 10 V standard signals.
- Calibrated signal setting Input and output range can be set by using DIP switch – high precision without any further adjustment
- 3-Port isolation Protection against erroneous measurements due to parasitic voltages or ground loops
- Extremely slim design 6.2 mm slim housing for a simple and space saving DIN rail mounting
- Optional In-Rail-Bus mounting rail connector allows for fast and economical installation
- Protective Separation acc. to EN 61140 Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| Ex and UL instructions |
| User Manual |
The Isolation Amplifier DN 28 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
- 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
- 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)
| Datasheet |
| User Manual |
Isolation Amplifier Module DN 240M – Isolation and Conversion of Standard Signals for PCB Assembling
The Isolation Amplifier DN 240M 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 connector pins - without any further adjustment
- Power Supply for 24 V DC Applicable for standard power supply voltages
- 3-port isolation Protection against erroneous measurements due to parasitic voltages or ground loops
- Ultra-small-sized housing 15.5 mm flat module for pcb assembling
- 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)
| Datenblatt |
The Isolation Amplifier DS 7200 is used for separation and conversion of bipolar and unipolar mV-signals such as those frequently used for current measuring with shunt-resistors or other applications.
- Easy selection of input and output range Input and output range for unipolar and bipolar signals can be easily set by using DIP switch
- Universal power supply 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
- High bandwidth; high accuracy No distortion; no falsification of measured signal
- Protective Separation, 5 kV Test Voltage Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| User Manual |
The Isolation Amplifier DS 75000 is used for separation and conversion of bipolar and unipolar mV-signals such as those frequently used for current measuring with shunt resistors or other applications with low sensor voltages.
- Calibrated signal setting via DIP switch Input and output range can be set by using DIP switch – high precision without any further adjustment
- High bandwidth; short response time No signal distortion; no falsification of measured signal
- Switchable Zero/Span compensation For readjustment of the shunt/mV signal or measuring section
- 3-Port isolation Protection against erroneous measurements due to parasitic voltages or ground loops
- Extremely slim design 6.2 mm slim housing for a simple and space saving DIN rail mounting
- Optional In-Rail-Bus mounting rail connector allows for fast and economical installation
- Protective Separation acc. to EN 61140 Protects service personnel and downstream devices against impermissibly high voltage
- 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)
| Datasheet |
| Ex and UL instructions |
| User Manual |
The Isolation Amplifier DS 78 is used for isolation and conversion of bipolar and unipolar mV-Signals such as those frequently used for current measuring with shuntresistors or other applications with low sensor voltages.
- 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).
| Datasheet |
| User Manual |
Isolation Amplifiers / Signal Isolation Amplifiers
An isolation amplifier is a signal converter that provides galvanic separation between the input and output circuit, allowing secure and interference-free signal transmission even at differing ground potentials. Although called “amplifier,” it does not necessarily increase signal amplitude — the essential purpose is safe isolation and reliable transmission. Isolation amplifiers are indispensable in industrial measurement, control and automation systems when ground loops, different potentials, electromagnetic interference or safety requirements prevent a direct connection.
Modern isolation amplifiers often include an isolated supply (floating ground) and use methods such as opto-electronic coupling, capacitive or inductive coupling, or high-frequency transformer coupling to decouple input and output. This enables reliable transmission of small or low-level signals — like 0/4…20 mA or 0…10 V standard signals — without interference from common-mode voltages or noise.
Questions & Answers on Isolation Amplifiers
What is an isolation amplifier?
An isolation amplifier is a module that establishes galvanic isolation between input and output circuits while still transmitting measurement or control signals reliably.
Why is galvanic isolation required?
Galvanic isolation prevents ground loops, eliminates potential differences and protects control or measuring systems from interference, overvoltage or ground-related faults — especially important with long cables, multiple grounding points or safety requirements.
Which signal types can be handled by an isolation amplifier?
Commonly used are standardized signals such as 0/4…20 mA current or 0…10 V voltage. These signals can be transmitted galvanically isolated to the control system.
Does the amplifier always “amplify” the signal?
No — the “amplifier” refers mainly to the internal electronics for isolation and conditioning; the output signal may have the same magnitude as the input, the focus is on isolation rather than gain.
How does an isolation amplifier work?
The input signal is decoupled from the output via optical, capacitive, inductive or transformer-based coupling. Input and output stages have separated supplies (floating ground), ensuring full electrical isolation.
What are the advantages of using an isolation amplifier?
Improved signal integrity, avoidance of ground loops or interference, protection against potential differences, and increased overall safety and reliability of the measurement/control system.
When is an isolation amplifier preferred over simple converters or direct sensor connections?
Whenever signal sources and control systems have different potentials, when long cables are used, when EMV interference is a concern, or when safety and reliable isolation are required.
How is the isolation amplifier powered?
Typically by a separate isolated power supply with floating ground, which maintains the isolation barrier between input and output circuits.
Can isolation amplifiers handle both current and voltage signals?
Yes — depending on the device, both analog current signals (e.g. 4…20 mA) and voltage signals (e.g. 0…10 V) can be isolated and forwarded to the output.
How robust are isolation amplifiers against interference and potential differences?
Modern isolation amplifiers often provide isolation voltages in the range of several hundred to over a thousand volts, offering strong protection against common-mode voltages, ground loops and transient disturbances.
Are there compact isolation amplifiers for use in space-constrained control cabinets?
Yes — many are designed as slim DIN-rail modules, ideal for dense cabinet layouts while still providing full galvanic isolation.
Can isolation amplifiers be used in safety-critical or hazardous-area applications?
Yes — there are versions with intrinsic safety, SIL/PL certifications or explosion-proof approval, suitable for demanding industrial or hazardous environments.