PICOPAK isolating amplifiers and transducers reliably transmit and aquire signals and convert measured values in the automation and process industry. The passive isolators protect systems from signal interference, improve electrical safety and thus enable trouble-free process control. The transmitters precisely aquire and convert physical variables into standard signals. The compact design saves space. The series is therefore also suitable for tight spaces.
Thanks to their extremely compact, space-saving flat design, the modules fit into almost any control cabinet.
All PICOPAK products are certified according to UL 61010.
For simple and time-saving installation
Integrated LEDs enable efficient operation and status display
Continuous cross-connection channels reduce wiring effort and save time.
Item number legible from above and as a QR code with a direct link to the catalogue.
Temperature is a key process variable in almost every industrial plant – crucial for quality, security and efficiency.
Temperature measuring points often have to be installed in very small spaces, close to the controller or directly in the machine module.
This is exactly where the PICOPAK temperature measuring transducer for PT100 sensors comes into its own.
The PICOPAK temperature measuring transducer accurately detects PT100 signals and converts them directly into a standardised 4...20 mA signal. Thanks to its output loop-fed design, it utilises the power from the signal line itself – a separate supply is not needed.
This reduces wiring requirements and ensures a clear, stable signal path with minimal space requirements.
It is ideal for modular machines, compact control boxes or local, potential-equal temperature measuring points where reliability and simplicity are important. Short response times, easy integration into PLC systems and its robust, maintenance-free design make it a reliable solution for continuous operation.
Its UL approval and IEC 61131-2 compliance guarantee smooth integration into automation systems worldwide.
The PICOPAK temperature measuring transducer thus represents a standardised, maintenance-free solution for precise temperature measurement in compact industrial applications – from machine modules to power supplies.
Heating zones in plastic and packaging machines
The PT100 is fed directly into the machine module, and the PICOPAK temperature measuring transducer generates a stable 4...20 mA signal for the PLC – ideal for precise zone temperature control.
Tool and heating plate temperatures
Local PT100 sensors are immediately detected and converted into a standardised current signal – for reliable tool temperatures in compact machine modules.
Control boxes with local temperature measuring points
The PICOPAK temperature measuring transducer accepts direct PT100 detection in the control cabinet and supplies a clearly linear 4...20 mA signal to the controller.
Test and climate chambers
In the local control box of the climate chamber, the PICOPAK converts the sensor signal directly into an evaluable PLC signal – quickly, stably and in a space-saving manner.
Laboratory, analytical and OEM equipment
The integrated PT100 in the equipment is connected directly to the PICOPAK temperature measuring transducer, which immediately converts the signal into a standardised output value – perfect for compact, modular designs.
Pump or filter units (local control cabinet)
The PT100 in the aggregate module is directly detected by the PICOPAK and converted into a robust 4...20 mA signal – ideal for local monitoring functions.
The PICOPAK temperature measuring transducer is tailored to the requirements of modern industrial environments – wherever temperature measurement close to the controller, high package density and a clear signal path are required.
Thanks to its compact design, full PLC compatibility and maintenance-free operation, the PICOPAK temperature measuring transducer is ideal for standard industrial environments where easy installation, durability and signal stability are key requirements.
When analogue measurement signals need to be monitored reliably, the limit switches of the PICOPAK series offer a precise and easy-to-integrate solution. The two variants – for voltage signals (0...10 V) and for current signals (4...20 mA) – monitor process variables for defined limit values and switch off reliably when these values are exceeded or not reached. With a width of just 6 mm, they are ideal for space-saving installation in modern control cabinets and decentralised control boxes.
PICOPAK limit switch monitor analogue process signals and generate defined switching signals from them – ideal for warning, alarm or shutdown functions.
Two transistor outputs enable separate use of early warning and shutdown stages, making it easy to implement monitoring tasks for pumps, fans or heating/cooling circuits.
Front-panel potentiometers enable precise adjustment of the switching thresholds, while LED displays show the current switching status.
The equipment is designed for 0…10 V or 4…20 mA process signals (internal measurement range up to 0.5…20 mA) and can be optimally integrated into control cabinets with the same potential and modular machine structures.
Thanks to IEC 61131-2 compliance and UL certification, they integrate seamlessly into modern automation systems and offer maintenance-free operation throughout their entire service life.
Pump and fan monitoring
Analogue 0...10 V or 4...20 mA signals are recorded locally.
The PICOPAK sets a warning threshold and switches off the unit in a controlled manner at the second stage — ideal for blockages, overloads or overtemperature.
Monitoring of auxiliary and supply voltages
A 0...10 V signal or the internal auxiliary voltage is monitored.
In the event of undervoltage, the limit value switch immediately generates a fault signal or separates downstream consumers.
Level or pressure limits in compact modules
0…10 V or 4…20 mA sensors are evaluated directly in the control cabinet.
The Limit switch provides precise warning and shut-off signals — ideal for pump stations, filter or dosing modules.
Signal monitoring in heating and cooling circuits
An analogue 0...10 V or 4...20 mA signal from a controller or valve is monitored.
The PICOPAK detects impermissible areas and triggers local protection or fault messages off.
Limit switch monitoring in test and inspection modules
Process values of 0...10 V or 4...20 mA are monitored in test benches or OEM equipment.
When the limit switch is exceeded, the transistor outputs reliably switch valves, loads or consumers.
HVAC and building systems and technology (0...10 V signals)
0...10 V control signals from dampers, fans or mixing valves are monitored locally.
The PICOPAK sets warning signals or defines switching functions in HVAC and distribution cabinets.
PICOPAK limit switches are suitable for compact control environments that require define analogue signals, clear threshold values and fast response times.
The combination of 24 V power supply, compact 6 mm design, UL certification and IEC 61131-2 compliance enables simple, worldwide integration.
In industrial controller and process systems, the safe isolation of analogue current signals is crucial for trouble-free operation. The PICOPAK passive isolator transmits active process signals linearly and electrogalvanically separated from the input to the output – compact, reliable and without an external power supply. It thus protects controllers from ground loops and voltage injections, while maintaining signal quality in full.
The PICOPAK passive isolator ensures reliability, electrogalvanically isolated transmission of 4...20 mA process signals and protects downstream controller or evaluation units from ground loops, voltage carry-over or feedback.
It is ideal for applications in which measurement, display or control paths must be kept isolated from each other.
As an input loop-fed device, the passive isolator does not require its own supply voltage – the energy is taken directly from the current loop.
This reduces installation effort, minimises sources of error and enables insert in particularly compact control modules.
Thanks to its precise 1:1 signal transmission, the measured value is retained in full even across electrogalvanised barriers and can be safely processed in downstream PLC, display or control systems.
The narrow 6 mm design allows for high packing density in densely fitted control cabinets, while the passive, maintenance-free construction guarantees long-term stable and reliable operation.
Galvanic isolation between transmitter and PLC input
The 4...20 mA signal from a field transmitter is safely decoupled from the PLC to prevent ground loops and feedback.
Decoupling between display and evaluation unit
A local display device and a central controller can use the same signal – separated by an electrogalvanised barrier, without mutual interference.
Potential isolation between measuring circuits of different supply systems
The passive isolator ensures safe signal transmission between measuring points that originate from different supply circuits or have different reference potentials.
Isolation of parallel 4...20 mA loops in modular machines
Multiple modules receive separate 4...20 mA signals off the same source – ideal for avoiding coupling effects and interference.
Protection of sensitive measurement inputs against feedback
Analogue inputs from PLCs, controllers or OEM equipment are protected against fault currents or interference in the field by galvanic isolation.
Signal transmission in test, laboratory or OEM equipment without additional power supply
The passive isolator transmits the input signal with electrogalvanised separation without the need for a power supply or additional wiring – ideal for compact measurement modules.
The PICOPAK passive isolator is designed for industrial environments where active 4...20 mA process signals need to be transmitted safely and with electrogalvanised isolation – compact, energy efficient and maintenance-free.
UL approval enables worldwide use, while the passive design ensures consistently high operational reliability with minimal installation effort.
Filter and search for isolating amplifiers and transducers
Weidmüller offers you a comprehensive portfolio of isolating amplifiers and measuring transducers with all standard functions. In our eShop, you will find extensive filter options to simplify your product selection.
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