Special devices
Since 1974, PR electronics has built a reputation for providing ingenious solutions for special applications where standard devices fall short. Our range of special devices is a testament to our commitment to solving any signal conditioning challenge, developed in close cooperation with our customers to meet their unique industry standards and needs. This category includes a diverse array of products, from advanced valve controllers and high-precision load cell amplifiers to custom power solutions and ramp generators.
The philosophy behind our special devices category is simple: for every need, there is a device. When a standard product doesn't fit your requirements, our deep engineering expertise allows us to design and deliver a customized or specialized solution. We are more than a supplier; we are a problem-solving partner dedicated to finding the perfect answer to your most difficult signal conditioning problems.
- Analog current and voltage output
- PNP / NPN output, optional relays
- Universal supply
- Concurrent f/I and f/f function
- Analog current and voltage output
- PNP / NPN output, optional relays
- Front-programmable
- mA, V, and Ω programmable input
- Ramp times, jump values, reversal, chopper frequency, and deadband
- Load cell amplifier
- mV to current / voltage conversion
- Front-programmable / LED display
- Slimline housing of 6.1 mm
- Supplies DIN rail from supply terminals
- Up to 100 units can be powered
- Potentiometer or Ohmic input
- High measurement accuracy
- Unique process calibration function
- Potentiometer or Ohmic input
- High measurement accuracy
- Unique process calibration function
- Distributes supply voltage to the power rail
- Optional connection of backup supply
- Approved for installation in I.S / Ex zone 2 / Div. 2
- Supply voltage 100...132 VAC or 187...264 VAC
- Approved for installation in I.S. / Ex zone 2 / Div. 2
- Active signal output
Precision control for valves and actuators
For applications requiring precise control over industrial valves and actuators, the 2224 Valve Controller offers a highly specialized and powerful solution. This front-programmable device accepts mA, V, and Ω inputs to provide exacting control over flow and pressure. It features a host of advanced control parameters, including programmable ramp times, jump values, reversal, chopper frequency, and deadband adjustment. This level of detailed control allows you to fine-tune your process, optimizing performance and ensuring the stability of your system.
High-accuracy amplification for load cells and mV signals
Measuring the very small millivolt signals generated by load cells and strain gauges presents a significant challenge in many industrial applications. The 2261 mV Transmitter is specifically designed as a load cell amplifier to meet this challenge, converting these low-level signals into stable, standard, and highly accurate current or voltage signals. Featuring a front-programmable interface and an integrated LED display, the 2261 makes setup, calibration, and monitoring straightforward, ensuring reliable and precise measurements for weighing and force-measurement applications.
Specialized frequency conversion and control
Our special devices category includes advanced frequency converters for complex control applications. The 5223A and 5225A Programmable f/I-f/f Converters are designed to convert frequency inputs into both analog (f/I) and frequency (f/f) outputs. The 5225A offers a concurrent function, providing both output types simultaneously for maximum flexibility. With features like a universal power supply and PNP/NPN outputs, these converters are powerful tools for applications involving speed monitoring, counting, and motor control.
Reliable power and system infrastructure
A stable and reliable power infrastructure is the backbone of any control system. Our range of special devices includes products designed to ensure your system's power is clean and dependable. The 9410 Power Control Unit distributes supply voltage, allows for the connection of a backup supply, and is approved for installation in Ex zone 2 / Div. 2 hazardous areas. For high-density installations, the 3405 Power Connector Unit simplifies wiring by powering up to 100 slimline devices from a single power source, ensuring a neat and reliable setup.
Custom solutions and decades of expertise
Our long history of customer collaboration is the driving force behind the innovation in our special devices category. These products are the result of partnerships with customers to solve real-world problems. We encourage you to bring us your most difficult application challenges, and our team of experts will work with you to design a customized solution. This commitment to problem-solving is backed by our "Install & Forget®" promise and a 5-year warranty, ensuring that even our most specialized products deliver unmatched reliability.
Your partner for every signal conditioning challenge
PR electronics is your partner for every signal conditioning challenge, no matter how unique. Our special devices range, from sophisticated valve controllers to custom-designed power solutions, demonstrates our commitment to going beyond the standard. No challenge is too niche for our team of experts.
Explore our special devices below. If you need assistance in finding the device you need or require a customized option, please do not hesitate to contact us.

















