Universal trip amplifier

Model : PR 4131

Brand: PR Electronics

  • Relay controller and trip amplifier with universal input
  • RTD input type Pt, Ni, Cu
  • Thermocouple (TC) input type B, E, J, K, L, N, R, S, T, U
  • Potentiometer input: 10…100kΩ
  • Linear resistance input: 0…10000Ω
  • DC Current and Voltage input
  • 2 adjustable alarm limits
  • 2 relay outputs
  • Relay output functions: Setpoint, Window, Sensor error, Latch, Power and Off
  • Programming and process monitoring via PR 4500 display series
  • 3kVAC galvanic isolation
  • FM-certified for installation in Div. 2
  • Universally powered by 21.6…253 VAC / 19.2…300 VDC

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Catalogue
Specifications
Function

Relay Controller, Trip Amplifier

Brand

PR Electronics

Number of Inputs

1

Input Type

DC Current, DC Voltage, RTD, Thermocouple

Number of Outputs

1

Output Type

Relay

Interface

PR 4500 Modules

Protocol

MODBUS RTU

Transmission Rate

2400 to 115200 bit/s

Programming

4500 series devices

Accuracy

< ±0.1% of span

Certification

DNV, EAC, EU-RO marine, FM, UL

Power Supply

25…250VDC / 20…300VAC

Isolation Voltage

2.3 kVAC

Operating Temperature

-20 to +60°C

Temperature Coefficient

< ±0.01% of span /°C

Protection Degree

IP 20

Dimension

109×23.5×104 mm

Weight

180g

Other product features
Weight

180 g

Dimensions

175 × 150 × 35 mm

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

  • 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 4131 is used with the PR 4500 display series, all operational parameters can be modified to suit any application. As the 4131 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.

Source: PR4131 Official Page

Product Documents:

Certifications:

PR Electronics Solutions:

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