Facts
• Loop-powered, therefore no mains interference
• Extremely high accuracy
• Broad range of applications: current transmission from 2 µA to 50 mA
• No unnecessary heating and therefore maximum service life of components
• Negligible load on the measurement signal; internal voltage drop just 1.2 V
• Low signal delay
• Space-saving thanks to multi-channel versions; modular housings with up to 3 channels
• Quality ensured by computer-controlled testing
• 5-year warranty

Functional Safety And Maximum Availability Can Go Together

For measurement and safety reasons, analog signals are routinely isolated in industrial facilities.

The requirements on plant and safety-related circuits are continuously increasing, for instance because of a growing awareness of occupational safety. Thereby, the technical requirements on components are also being raised. However, higher functional safety is often bought by more effort and at the expense of availability. This does not have to be the case, as proven by the new ProLine P 22400 passive isolator for standard signals.

Its operating principle enables the implementation of a product that combines high functional safety with high availability in a unique way – a balancing act that would otherwise be hard to  achieve.

SIL 3 Even in Single-Channel Structure

ProLine P 22400’s safety functionality is the highly precise, linear transmission of 4 ... 20 mA signals.

A high level of functional safety can be achieved even in single-channel structure and without diagnostics. For instance, sensors and actuators in safety circuits can be directly connected, requiring no elaborate evaluation equipment for redundant structures. At the same time, the device has a low total failure rate and provides high availability.

After all, what good is a safety device that will keep turning off (switch to a safe state) and thereby regularly close down the facility it is meant to monitor?

ProLine P 22400 is safe and highly available.

ProLine P 22400 – At One Glance

• Functional safety up to SIL 3 according to EN 61508, certified by an accredited authority
• MTBF: 965 years
• Low transmission error of 0.08% full scale
• High isolation including protection against electric shocks through reinforced insulation up to 600 V AC/DC
• Test voltage: 5.4 kV AC
• Minimal losses and reduced installation efforts thanks to loop-powered operation
• Robust design
• Mechanically stable, approved by an independent testing lab, suitable for marine applications
• Ambient temperature range during operation: –40 ... +85 °C
• Resistant against electromagnetic interferences, meeting stringent SIL requirements

5-year warranty

Thanks to an extremely high packing density of up to 320 channels per meter of mounting rail and outstanding technical properties such as protective separation, these isolators leave the competition in the dust – even when it comes to the price-performance ratio! The IsoTrans A 20400 draws its power as a voltage drop directly from the measurement signal without falsifying it. There are no costs for a power supply and wiring. The IsoTrans A 20400 has virtually no self-heating that would cause the electronic components to age faster. Together with a patented circuit design, this means maximum reliability. The consequence of this extraordinary long service life: 5-year warranty!

Facts
• Extremely compact design: up to 320 channels per meter
• 1- and 2-channel versions: cheap and flexible for a
  wide range of applications
• Galvanic isolation between the input and output:
  protection against incorrect measurements
  or damage to the equipment due to parasitic voltages
• Protective separation up to 300 V AC/DC according to EN 61140
  to protect personnel and equipment
• Load stop function prevents feedback
  e.g. in the case of an open output circuit
• No power supply required, cost saving due to lower wiring effort
  No mains interference, no unnecessary self-heating and therefore
  maximum component service life
• High accuracy: no distortion of the measurement signal
• Maximum reliability: no repair and failure costs
• International use: UL / CSA approvals
• 5-year warranty