Description

PR 4131 Universal Trip Amplifier – PR Electronics

The PR Electronics 4131 Universal Trip Amplifier is a versatile, FM-approved, and DNV Marine-certified device designed for reliable process control, trip protection, and safety monitoring. With universal inputs, two programmable relay outputs, and advanced error diagnostics, the PR 4131 is the ideal choice for engineers requiring precision and safety in critical industrial applications.

Key Features

• Universal input: RTD, TC, Ohm, potentiometer, mA, and V

• 2 adjustable alarm limits for flexible trip configurations

• 2 relay outputs for safety and process control

• Universal AC or DC supply (21.6…253 VAC or 19.2…300 VDC)

• FM-approved for installation in Div. 2 hazardous areas

• 3-port 2.3 kVAC galvanic isolation for maximum safety

Applications

• Trip amplifier with window function – configurable high and low setpoints

• Relay latch function – manual reset for safety events

• Sensor error surveillance – one relay holds last state, the other triggers alarm

• Temperature safety relay for engines, machines, and process equipment

• mA trip amplifier and voltage monitoring relay for automation systems

• Level controller with relays for tanks and fluid management

Advanced Functions

• Programmable via PR 4500 detachable display

• Password protection, process calibration, and relay simulation

• Multi-language help text and error diagnostics

• Continuous data integrity checks for operational safety

• LED indicators for relay activity and device status

Technical Highlights

• High accuracy: better than 0.1% of selected range

• Fast response time: ≤ 1 s (temperature input), ≤ 400 ms (mA/V input)

• Wide input range: RTD (Pt, Ni, Cu), thermocouples (B, E, J, K, N, R, S, T, U, etc.), mA, V, resistance, potentiometers

• Relay output functions: Setpoint, Window, Sensor error, Latch, Power, Off

• Hysteresis: 0…100% | On/Off delay: 0…3600 s

• Compact DIN rail mount design: 109 x 23.5 x 104 mm

Certifications & Approvals

• FM 3025177 – Division 2

• c UL us, UL 508 (E231911)

• DNV Marine TAA0000101

• EU RO MR Type Approval MRA000000Z

• RoHS, EMC, LVD, EAC compliant

Product Details

• Part Number: PR 4131

• Product Name: Universal Trip Amplifier with 2 Relay Outputs

• Manufacturer: PR Electronics

• Origin: Denmark

• Condition: New / Original Packing

More About PR 4131 Universal Trip Amplifier with 2 relay outputs.

• Temperature Trip Amplifier Relay

• mA Trip Amplifier Signal Conditioner

• PR Electronics Safety Relay

• FM Approved Trip Amplifier

• DNV Marine Approved Trip Amplifier

• Universal Trip Amplifier with Window Function

• Industrial Process Trip Relay

Advanced features

• Programmable via detachable display front (PR 4500 series), process calibration, relay simulation, password protection, error diagnostics and selection of help text in several languages.

Application – 4131 Universal Trip Amplifier

• Process control with 2 pairs of potential-free relay contacts which can be configured 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 activated and can only be reset manually.
• Sophisticated sensor error surveillance, where one relay holds the state immediately prior to the sensor error, while allowing the process to continue. The other relay can be set for sensor error alarm so that the defect sensor can be replaced immediately.

Technical characteristics

• When the universal trip amplifier 4131 is used with the PR 4500 display series, all operational parameters can be modified to suit any application. As the pr 4131 universal transmitter is designed with electronic hardware switches, it is not 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.

Popular Uses – PR Electronics 4131

• mA Trip Amplifier
• Temperature Safety Relay
• Trip Protection Switch
• Level Controller with relays
• Engine Temperature Safety relay / Temperature Trip Amplifier

Environmental Conditions