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PUR-49 D PID Controller with Dual LED Display

Introducing the PUR-49D, a multi-function controller that effortlessly blends the simplicity of a two-step controller with the sophistication of a dual-loop PID controller. Ideal for precise temperature regulation, it features auto-tuning, Fuzzy-Logic algorithms, and a dual-row display for easy monitoring. The PUR-49D offers versatile output options (REL, OC, analogue) and supports various inputs (0/4-20 mA, 0-10V, Pt 100/500/1000). Easy to configure through a local keyboard or RS-485 connected S-Config software, the PUR-49D streamlines process control with efficiency and precision.

PUR 49 D PID Controller Product Parameters

  • Output Signal: REL, OC (SSR), or analog options available.
  • Accuracy: 0.1% @25°C ± one digit for most inputs.
  • Electrical Connections: Supports a range of inputs, including mA, V, mV, RTD, TC.
  • Special Features: Dual LED display, universal input, Modbus RTU, multiple output options, software configuration.


Product Highlights

The PUR49D PID Controller is a versatile and advanced device that combines the functionality of a simple two-step controller and a sophisticated PID controller. It boasts two control loops for heating and cooling, incorporating an auto-tuning feature and a Fuzzy-Logic algorithm. One of its key advantages is the dual-row display, with the first row showing the measured value and the second row displaying the programmed values. The controller offers multiple output options, such as built-in REL, OC (SSR), or analogue output, depending on the customer’s preference. These outputs include active current output, passive isolated current output, or active voltage output, making it suitable for a wide range of control processes. With a universal input accommodating various signal types including 0/4-20 mA, 0-10V, 0-150 mV, Pt 100/500/1000, or TC (K, S, J, T, N, R, B, E), the controller ensures compatibility with different sensors. It features automatic compensation for the cold junction of thermocouple sensors and provides fully linearised characteristics for RTD and TC inputs. The PUR-49D’s extensive range of characteristic curves, including linear, square root, quadratic, user-defined, and volume characteristics for cylindrical tanks, enables its application in diverse process control systems. Configuration can be done through the local keyboard or the S-Config software using the RS-485 communication port, providing convenience and flexibility for users.


  • ON-OFF hysteresis, Fuzzy PID, Auto-tuning
  • Dual LED display:
    • PV – measured value
    • SV – setpoint value
  • Universal input: 0/4-20 mA, 0-10V, 0-150 mV, RTD or TC
  • REL 5A / OC (SSR) outputs
  • Analogue output: active or passive, power supply output: 24V DC
  • RS-485 / Modbus RTU in standard
  • Signal peak value detection
  • Free configuration software S-Config

To download the latest datasheet click here: PUR 49 D

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