Product Description

PR 4131 Universal Trip Amplifier

The PR electronics 4131 is a versatile and highly reliable universal trip amplifier designed for a wide range of industrial monitoring and control applications. It accepts a broad spectrum of inputs, including mA, V, thermocouple (TC), RTD, linear resistance, and potentiometer signals. This device features two single pole double throw (SPDT) relay outputs that can be configured for various setpoint alarms, including window, high/low, or sensor error detection. The PR 4131 is easily programmed via the detachable PR 4501 display front, allowing for simple configuration and monitoring. With its universal AC/DC power supply and high galvanic isolation, it ensures safe and stable operation in demanding environments. Certified for SIL 2 applications, the PR 4131 is an ideal choice for critical safety instrumented systems.

Technical Specifications:

  • Input Signal: Universal input for Voltage (V), Current (mA), Thermocouple (TC), RTD, linear resistance, and potentiometer

  • Output: 2 x SPDT relay outputs

  • Supply Voltage: 21.6…253 VAC / 19.2…300 VDC

  • Safety Integrity Level (SIL): SIL 2 certified according to IEC 61508

  • Programming: Programmable via detachable display front (PR 4501)

  • Response Time: < 25 ms

  • Isolation: 2.3 kVAC galvanic isolation between input, supply, and outputs

PR 4131 Universal Trip Amplifier Description

PR 4131 Universal Trip Amplifier

The PR 4131 is a SIL 2 certified universal trip amplifier with two relay outputs, designed for monitoring and controlling a wide range of process signals including V, mA, TC, and RTD.