KCD2-RR2-Ex1 | P+F Dual Channel Relay Output Intrinsic Safety Isolator Ex ia ATEX DIN Rail

Name: KCD2-RR2-Ex1 | P+F Dual Channel Relay Output Intrinsic Safety Isolator Ex ia ATEX DIN Rail
Brand: Shenzhen Hengyo Power Technology Co., Limited
SKU: KCD2-RR2-Ex1
Availability: InStock

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KCD2-RR2-Ex1 | P+F Dual Channel Relay Output Intrinsic Safety Isolator Ex ia ATEX DIN Rail

Large Image : KCD2-RR2-Ex1 | P+F Dual Channel Relay Output Intrinsic Safety Isolator Ex ia ATEX DIN Rail

Product Details:

Place of Origin:	Singapore
Brand Name:	PEPPERL+FUCHS
Certification:	CE SIL3
Model Number:	KCD2-RR2-Ex1

Payment & Shipping Terms:

Minimum Order Quantity:	1
Price:	Negotiable
Packaging Details:	original package
Delivery Time:	3 working days
Payment Terms:	T/T,Western Union
Supply Ability:	500pcs/month

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KCD2-RR2-Ex1 | P+F Dual Channel Relay Output Intrinsic Safety Isolator Ex ia ATEX DIN Rail

Description

Condition:	Original Brand New	Warranty:	One Year
Shipping Way:	DHL FedEx Express	Application:	Automation Industries, Oil, Gas, Chemical Industries
Certificate:	CE ISO TUV
Highlight:	1-channel isolated safety barrier , PEPPERL+FUCHS resistance repeater , KCD2-RR2-Ex1 intrinsic safety barrier

KCD2-RR2-Ex1 | P+F Dual Channel Relay Output Intrinsic Safety Isolator Ex ia ATEX DIN Rail

Product Overview

The KCD2-RR2-Ex1 is a high-performance 1-channel isolated barrier from Pepperl+Fuchs' K-System, specifically engineered to transfer resistance values from RTDs (Pt100, Pt500, Pt1000) or potentiometers located in hazardous areas to safe area control systems with exceptional accuracy.

This signal conditioner provides complete galvanic isolation between field and control circuits while maintaining 0.1% accuracy across the entire measurement range. The device supports 2-, 3-, or 4-wire techniques depending on the required accuracy, ensuring that the input card of the control system measures the same load as if it were connected directly to the resistance in the hazardous area.

Certified for SIL 2 (SC 3) acc. to IEC/EN 61508 and approved for hazardous area installation with [Ex ia Ga] IIC, [Ex ia Da] IIIC, and [Ex ia Ma] I certifications, the KCD2-RR2-Ex1 delivers reliable, safety-rated performance for temperature measurement and resistance signal transfer in explosive atmospheres.

With a compact 12.5 mm width and 24 V DC power supply (via Power Rail or terminals), this device is the ideal solution for RTD and potentiometer signal isolation in hazardous area installations.

Model Number Decoding

Code Segment	Meaning
KCD2	K-System, 2-channel housing width (12.5 mm)
RR2	Resistance Repeater – transfers resistance/RTD signals
Ex1	1-channel with intrinsic safety (Ex) certification

This model features screw terminal connections. For spring terminal (push-in) version, specify KCD2-RR2-Ex1.SP.

Key Features & Benefits

High Accuracy (0.1%)

Delivers exceptional measurement precision with deviation of ±0.1% of Rm or ±0.1 Ω – ensures reliable temperature measurement and resistance signal transfer.

Multiple RTD Support

Accepts Pt100, Pt500, and Pt1000 RTD sensors – flexible field device compatibility for various temperature measurement applications.

Flexible Wiring Configurations

Supports 2-, 3-, or 4-wire techniques depending on the required accuracy – eliminates lead resistance errors for long-distance installations.

Line Fault Detection (LFD)

Monitors field wiring for Pt100 sensors – detects open and short circuits, enabling predictive maintenance and reducing unplanned downtime.

Intrinsic Safety Certification

Certified with [Ex ia Ga] IIC for Zone 0, 1, and 2 hazardous areas – gas groups IIC (hydrogen, acetylene), IIB, and IIA. Also certified for dust (IIIC) and mining (Ma) applications.

SIL 2 Certified

Safety Integrity Level 2 (SC 3) acc. to IEC/EN 61508 – suitable for safety-related applications.

Technical Specifications

General Specifications

Parameter	Value
Manufacturer	Pepperl+Fuchs SE
Product Type	Resistance Repeater / Isolated Barrier
Model	KCD2-RR2-Ex1
Signal Type	Analog input
Channels	1
Housing Width	12.5 mm (type A2)

Functional Safety

Parameter	Value
Safety Integrity Level (SIL)	SIL 2 acc. to IEC/EN 61508
Systematic Capability (SC)	SC 3

Supply

Parameter	Value
Connection	Power Rail or terminals 9+, 10-
Rated Voltage	19 ... 30 V DC
Ripple	within the supply tolerance
Rated Current	< 28 mA
Power Consumption	0.35 W (24 V and 1 mA sense current), 0.85 W (30 V and 10 mA sense current)

Input (Field Side)

Parameter	Value
Connection	terminals 1, 2, 3, 4
Suitable Sensors	Pt100, Pt500, Pt1000, potentiometers
Line Fault Detection	yes, at Pt100
Lead Resistance	≤ 10 % of resistance value
Transmission Range	0 ... 10 mA
Available Voltage	7 V
LFD Threshold	< 30 nA

Output (Control Side)

Parameter	Value
Connection	terminals 5-, 7-, 6+, 8+
Current	0 ... 10 mA
Available Voltage	0 ... 4.2 V
Fault Signal	field voltage < 150 mV or > 4 V, depending on lead disconnected
Reverse Polarity Protection	for I < 10 mA or U < 20 V

Transfer Characteristics

Parameter	Value
Accuracy	0.1 %
Deviation	Im ≥ 1 mA: ±0.1 % of Rm or ±0.1 Ω (the larger value is applicable) Im < 1 mA: accuracy reduces in proportion to Im (e.g., Im=0.1mA: ±1% of Rm or 1Ω)
Temperature Influence	Im ≥ 1 mA, Rm ≥ 100 Ω: 0.01 %/K in range -20 ... +70 °C
Settling Time	≤ 5 ms
Rise Time/Fall Time	≤ 2 ms (10 ... 90%)

Galvanic Isolation

Parameter	Value
Output/Power Supply	functional insulation, rated insulation voltage 50 V AC

Indicators & Settings

Parameter	Value
Display Elements	LED
Control Elements	DIP switch
Configuration	via DIP switches
Labeling	space for labeling at the front

Hazardous Area Specifications (Ex ia)

Parameter	Value
EU-Type Examination Certificate	BASEEFA 10 ATEX 0061X
Marking	II (1)G [Ex ia Ga] IIC II (1)D [Ex ia Da] IIIC I (M1) [Ex ia Ma] I
Output Voltage (Uo)	9.5 V
Output Current (Io)	39.22 mA
Output Power (Po)	93 mW

Zone 2 Certification (Ex ec)

Parameter	Value
Certificate	BASEEFA 10 ATEX 0062X
Marking	II 3G Ex ec IIC T4 Gc

Ambient Conditions

Parameter	Value
Ambient Temperature	-40 ... 70 °C (-40 ... 158 °F)

Mechanical Specifications

Parameter	Value
Degree of Protection	IP20
Connection	Screw terminals
Mass	approx. 100 g
Dimensions (W x H x D)	12.5 x 119 x 114 mm (0.5 x 4.7 x 4.5 inch)
Mounting	on 35 mm DIN mounting rail acc. to EN 60715:2001

Function Description

The KCD2-RR2-Ex1 is an isolated barrier used for intrinsic safety applications. It transfers resistance values of RTDs (Pt100, Pt500, Pt1000) or potentiometers from hazardous areas to safe areas.

How it works:

The device provides a sensing current to the field resistance sensor
The resulting voltage drop is transferred across the galvanic isolation barrier
The output stage reproduces the resistance value as a proportional current signal (0 ... 10 mA)
A 2-, 3-, or 4-wire technique is available depending on the required accuracy
Line fault detection (LFD) monitors field wiring for Pt100 sensors, detecting open and short circuits
The input card of the control system measures the same load as if it were connected directly to the resistance in the hazardous area

Signal flow:
Hazardous Area (Field Side) Safe Area (Control Side)
RTD Sensor (Pt100/Pt500/Pt1000) ──► KCD2-RR2-Ex1 ──► 0...10 mA to PLC/DCS
Potentiometer ──────────────────► (Galvanic isolation + Intrinsic safety)
(2-, 3-, or 4-wire connection)

Applications

The KCD2-RR2-Ex1 is specifically designed for resistance and temperature signal transfer in hazardous area installations:

Industry	Application
Oil & Gas	Temperature measurement with Pt100 sensors on offshore platforms, refineries, and pipelines in Zone 0/1 areas
Chemical Processing	Reactor temperature monitoring, level measurement with potentiometric sensors in explosive atmospheres
Pharmaceutical	Sterile processing temperature monitoring, fermenter temperature control with Ex ia protection
Power Generation	Bearing temperature monitoring on turbines and generators, stator winding RTD measurement
Mining	Certified [Ex ia Ma] I for underground mining equipment requiring intrinsic safety
Marine & Offshore	DNV marine approved – temperature monitoring for marine control systems

Typical field devices connected:

Pt100, Pt500, Pt1000 RTD temperature sensors
Potentiometers (e.g., for level measurement, valve position feedback)
Resistance-based sensors in hazardous areas

Why Choose the KCD2-RR2-Ex1?

True Resistance Transfer

Unlike temperature converters that convert resistance to 4-20 mA, the KCD2-RR2-Ex1 reproduces the actual resistance value at the output. The control system measures the same load as if it were connected directly to the field sensor – no scaling or configuration required.

Highest Accuracy for Critical Measurements

With 0.1% accuracy and deviation of ±0.1 Ω for Pt100 measurements, the KCD2-RR2-Ex1 delivers the precision required for critical temperature monitoring applications.

Flexible Wiring for Any Installation

The ability to select 2-, 3-, or 4-wire connection techniques allows optimization for any installation – from cost-effective 2-wire to highest-accuracy 4-wire with full lead resistance compensation.

Comprehensive Hazardous Area Coverage

Certified for gas (IIC), dust (IIIC), AND mining (Ma) applications – providing the widest hazardous area coverage available in a single device.

SIL 2 Certified for Safety Applications

Certified acc. to IEC/EN 61508 with Systematic Capability SC 3, suitable for safety instrumented systems (SIS) requiring reliable temperature monitoring.

Built-in Diagnostics

Line fault detection (LFD) continuously monitors Pt100 field wiring for open and short conditions, enabling predictive maintenance and reducing unplanned downtime.

Compliance & Certifications

SIL 2 ATEX (Ex ia) ATEX (Ex ec) IECEx FM Approval UL Approval DNV Marine CCC Ex (China) KOSHA (Korea) TIIS (Japan) PESO (India) UKEX (UK) CE NAMUR RoHS

Overall Rating

5.0

Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings

5 stars

100%

4 stars

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2 stars

1 stars

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Roni

Indonesia Nov 30.2023

Helpful (6)

After plugged, it plays well

Bernardo

Mexico Nov 11.2023

Helpful (10)

Panasonic means quality

Bozek

Poland Jan 12.2023

Helpful (16)

fast and professional service, I recommend cooperation

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Contact Person: Vivian Chan

Tel: +86 13510341645

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