
The PR 4131 Universal Trip Amplifier is a high-performance industrial signal conditioning device that enhances safety and control in process automation systems. This versatile universal trip amplifier accepts a wide range of inputs, including RTDs, thermocouples (TC), resistance (Ohm), potentiometers, mA and voltage signals. Thus, the 4131, from PR electronics, is perfect for applications requiring precision monitoring, alarm triggering, and process protection.
- Programmable via detachable display front ( PR 4500 series).
- Features process calibration, relay simulation, password protection, error diagnostics, as well as selection of help text in several languages.
- Process control with 2 pairs of potential-free relay contacts which can configure to suit any application.
- Trip amplifier with window function defined by a high and a low setpoint.
- The relay changes state outside the window.
- Relay latch function, where the relay is active and can only be reset manually.
- Sophisticated sensor error surveillance, where one relay holds the state immediately prior to the sensor error, thus allowing the process to continue.
- The other relay can be set for sensor error alarm so that the defective sensor can be replaced immediately.
PR 4131 Universal Trip Amplifier from PR electronics
Built for reliability, the PR 4131 Universal Trip Amplifier features two adjustable alarm limits and dual relay outputs. The alarms and outputs can configure for window, latch or sensor-error functions, thus providing flexible control in complex systems. Its universal AC/DC power supply supports deployment in diverse industrial environments, while FM approval for Division 2 installations ensures safety compliance in hazardous locations.
- When the PR 4131 is used with the PR 4500 display series, all operational parameters can be modified to suit any application.
- As the 4131 features electronic hardware switches, it isn't necessary to open the device for setting of DIP-switches.
- A green front LED indicates normal operation and malfunction.
- A yellow LED is ON for each active output relay.
- Continuous check of vital stored data for safety reasons.
- 3-port 2.3 kVAC galvanic isolation.
Easy Mounting, Installation, and Programming
Users will appreciate the detachable PR 4500 series programming display, which simplifies configuration, process calibration, and relay simulation without opening the unit. Advanced monitoring functions include sensor error supervision and continuous safety checks of critical stored data, enhancing operational uptime and reducing maintenance.
With robust 3-port galvanic isolation and clear LED status indicators, the PR 4131 Universal Trip Amplifier delivers dependable alarm signaling, precise sensor monitoring, and seamless integration with PLCs and control systems. Thus, the 4131 is an essential component in modern industrial automation, safety, and process control solutions.
- Features approval for marine applications.

Models of the PR 4131 Universal Trip Amplifier
| Model ID | Configuration |
|---|---|
| PR 4131 | Universal Input; 2 Relay Outputs; Isolated Input/Output/Supply. |
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