The Beckhoff KL3314 is a 4-channel analog input Bus Terminal designed specifically for temperature measurement using thermocouples. With broad sensor compatibility, high resolution, and integrated diagnostics, it provides reliable and accurate monitoring for process control and industrial automation environments.

This terminal supports connection of four thermocouples using a simple 2-wire method, enabling compact integration of multiple temperature measurements in a single module. Its versatility is a standout feature, as it can interface with a wide range of thermocouple types, including J, K, L, B, E, N, R, S, T, and U. This broad compatibility makes it suitable for diverse industries such as manufacturing, energy, food and beverage, HVAC, and laboratory automation. Additionally, it can measure low-level millivolt (mV) signals, further expanding its range of applications.

The KL3314 delivers precise measurement results with 16-bit resolution and a granularity of 0.1 °C per digit. This level of detail ensures accurate monitoring of temperature trends and enables fine process control. With a measurement uncertainty of less than ±0.5% relative to the full-scale value, it provides dependable data that operators can trust for both critical control loops and quality assurance tasks.

Conversion time for each channel is approximately 250 ms, striking a balance between accuracy and responsiveness. This rate is well suited for temperature processes, which typically change more slowly than electrical or motion-related signals, ensuring stable and meaningful data capture without unnecessary noise or fluctuation.

Diagnostics are integrated into the terminal’s design. A wiring fail indication feature provides immediate feedback if a thermocouple connection is lost or faulty. This reduces troubleshooting time, enhances system reliability, and ensures that operators can quickly address issues before they impact production or safety.

The KL3314 integrates seamlessly into Beckhoff’s modular I/O system, with power and communication supplied via the K-bus. Data is transmitted directly to the higher-level controller, such as a Bus Coupler or Embedded PC, allowing real-time availability of temperature values within the automation system. As part of the modular platform, it can be combined with other analog, digital, and specialty terminals to build a customised I/O configuration.

Compact and efficient, the KL3314 saves space in control cabinets by consolidating four inputs into one device. Its modularity allows engineers to scale systems easily as additional temperature channels are required, without redesigning the entire architecture.

In summary, the Beckhoff KL3314 is a flexible, accurate, and diagnostic-capable solution for thermocouple-based temperature measurement. With 4-channel support, compatibility with multiple sensor types, 16-bit resolution, and built-in wiring fail indication, it provides the precision and reliability necessary for modern automation. Whether applied in process control, equipment monitoring, or laboratory systems, the KL3314 ensures dependable temperature acquisition in a compact and scalable package.