PR Electronics 4131 Data Sheet
Universal trip amplifier
4131
– Input for RTD, TC, Ohm, potentiometer, mA and V
– 2 adjustable alarm limits
– FM-approved for installation in Div. 2
– 2 relay outputs
– Universal AC or DC supply
Advanced features
• Programmable via detachable display front (4501), process
calibration, relay simulation, password protection, error
diagnostics and selection of help text in several languages.
Connections
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 4501 display / programming front,
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.
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Environmental Conditions
Specifications range.......................................
Calibration temperature.................................
Relative humidity............................................
Protection degree...........................................
-20°C to +60°C
20...28°C
< 95% RH (non-cond.)
IP20
Mechanical specifications
Dimensions (HxWxD).....................................
Dimensions (HxWxD) w/ 4501
/ 4511.............................................................
Weight approx................................................
Weight incl. 4501 / 4511 (approx.).................
Wire size........................................................
Screw terminal torque....................................
Vibration.........................................................
Vibration: 2...13.2 Hz.....................................
Vibration: 13.2...100 Hz.................................
109 x 23.5 x 104 mm
109 x 23.5 x 116 / 131 mm
170 g
185 g / 270 g
1 x 2.5 mm2 stranded wire
0.5 Nm
IEC 60068-2-6 : 2007
±1 mm
±0.7 g
Common specifications
Supply
Supply voltage, universal............................... 21.6...253 VAC, 50...60 Hz or
19.2...300 VDC
Isolation voltage
Isolation voltage, test /
working........................................................... 2.3 kVAC / 250 VAC
Response time
Temperature input (0...90%,
100...10%)...................................................... ≤ 1 s
mA / V input (0...90%, 100...10%).................. ≤ 400 ms
Auxiliary supplies
2-wire supply (terminal 44...43)...................... 25...16 VDC / 0...20 mA
Fuse............................................................... 400 mA SB / 250 VAC
Max. power consumption............................... ≤ 2.0 W
Communications interface............................. Communication enabler 4511
/ Programming front 4501
Signal / noise ratio......................................... Min. 60 dB (0...100 kHz)
Accuracy........................................................ Better than 0.1% of selected
range
EMC immunity influence................................ < ±0.5% of span
Extended EMC immunity: NAMUR
NE 21, A criterion, burst................................. < ±1% of span
Input specifications
RTD input
RTD type........................................................ Pt10, Pt20, Pt50, Pt100,
Pt200, Pt250, Pt300, Pt400,
Pt500, Pt1000 Ni50, Ni100,
Ni120, Ni1000, Cu10, Cu20,
Cu50, Cu100
Cable resistance per wire
(max.)............................................................. 50 Ω
Sensor current............................................... Nom. 0.2 mA
Effect of sensor cable resistance
(3-/4-wire)....................................................... < 0.002 Ω / Ω
Sensor error detection................................... Yes
Short circuit detection.................................... < 15 Ω
Thermocouple type........................................ B, E, J, K, L, N, R, S, T, U,
W3, W5, LR
Cold junction compensation
(CJC) via ext. sensor in
connector 5910.............................................. 20...28°C ≤ ±1°C, -20...20°C /
28...70°C ≤ 2°C
CJC via internally mounted
sensor............................................................ ±(2.0°C + 0.4°C * Δt)
Δt =................................................................. Internal temperature-ambient
temperature
Sensor error detection................................... Yes
Sensor error current: When
detecting / else............................................... Nom. 2 μA / 0 μA
Current input
Measurement range....................................... 0...20 mA
Programmable measurement ranges............ 0...20 and 4...20 mA
Input resistance.............................................. Nom. 20 Ω + PTC 50 Ω
Voltage input
Measurement range....................................... 0...12 VDC
Programmable measurement ranges............ 0/0.2...1, 0/1...5, 0/2...10 VDC
Input resistance.............................................. Nom. 10 MΩ
Output specifications
Relay output
Relay functions.............................................. Setpoint, Window, Sensor
error, Latch, Power and Off
Hysteresis...................................................... 0...100%
ON and OFF delay......................................... 0...3600 s
Max. voltage................................................... 250 VRMS
Max. current................................................... 2 AAC or 1 ADC
Max. AC power.............................................. 500 VA
Sensor error reaction..................................... Break / Make / Hold
*of span.......................................................... = of the currently selected
measurement range
Approvals
General approvals
EMC............................................................... EN 61326-1
LVD 2006/95/EC............................................ EN 61010-1
UL................................................................... UL 508
EAC TR-CU 020/2011................................... EN 61326-1
Ex / I.S.
FM.................................................................. 3025177
Marine approval
DNV Marine.................................................... Stand. f. Certific. No. 2.4
Linear resistance input
Linear resistance min....max.......................... 0 Ω...10000 Ω
TC input
4131-052015
Potentiometer input
Potentiometer min....max............................... 10 Ω...100 kΩ
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