KFD2-PT2-Ex1 Potentiometer Converter

Item code: PF.072018

Condition: New product


KFD2-PT2-EX1 Potentiometer Converter. 

- 1-channel isolated barrier;
- 24 V DC supply (Power Rail);
- Potentiometer input;
- Voltage output 0 V ... 10 V;
- Lead resistance compensation adjustment;
- Accuracy 0.05%;
- Up to SIL 2 acc. to IEC/EN 61508.

Pepperl+Fuchs KFD2-PT2-EX1.

Code: 072018.

4 Items

307,00 € tax excl.

Data sheet

Product type Potentiometer converter

More info

This isolated barrier is used for intrinsic safety applications.

It provides the source voltage to a potentiometer and transfers its wiper position from hazardous areas to safe areas.

It then converts the signal to a 0 V ... 10 V voltage output (consistant with 0 mA ... 20mA current output, see for example KFD2-PT2-Ex1-4).
The unit can be used in a 3-, 4-, or 5-wire configuration depending on the required measurement accuracy. Terminals 2 and 5 are used as the sense line for the potentiometer lead resistance compensation in a 5-wire configuration.
The barrier’s potentiometer can be used to compensate for lead resistance up to 5 % of the hazardous area potentiometer value.

General specifications
Signal type Analog input
Functional safety related parameters
Safety Integrity Level (SIL) SIL 2
Connection Power Rail or terminals 11+, 12-
Rated voltage 20 ... 35 V DC
Ripple within the supply tolerance
Power dissipation 0.5 W
Power consumption 0.6 W
Connection side field side
Connection terminals 4-, 5-, 3+, 2+, 1+
Types of measuring 3-, 4-, 5-wire technology
Nominal resistance 800 Ω to 100 kΩ
Supply voltage approx. 4.7 V
Lead resistance 5 % of the potentiometer resistance (adjustable)
Connection side control side
Connection terminals 7-, 8+
Voltage output 0 ... 10 V
Output resistance max. 30 Ω
Transfer characteristics
Accuracy 0.05 %
Linearity ≤ ± 5 mV
Influence of ambient temperature ≤ 0.5 mV/K
Rise time 10 to 90 % ≤ 8 ms; 10 to 90 % within 1 % of span ≤ 25 ms
Galvanic isolation
Output/power supply functional insulation, rated insulation voltage 50 V AC
Control elements potentiometer
Configuration via potentiometer
Directive conformity
Electromagnetic compatibility
Directive 2014/30/EU EN 61326-1:2013 (industrial locations)
Electromagnetic compatibility NE 21:2006
Degree of protection IEC 60529:2001
Protection against electrical shock UL 61010-1
Ambient conditions
Ambient temperature -20 ... 60 °C (-4 ... 140 °F)
Mechanical specifications
Degree of protection IP20
Connection screw terminals
Mass approx. 120 g
Dimensions 20 x 107 x 115 mm (0.8 x 4.2 x 4.5 inch) (W x H x D) , housing type B1
Mounting on 35 mm DIN mounting rail acc. to EN 60715:2001
Data for application in connection with hazardous areas
EU-type examination certificate BAS 00 ATEX 7171
Marking Ex-Hexagon II (1)G [Ex ia Ga] IIC , Ex-Hexagon II (1)D [Ex ia Da] IIIC , Ex-Hexagon I (M1) [Ex ia Ma] I (-20 °C ≤ Tamb ≤ 60 °C)
Voltage 10.4 V
Current 31.4 mA
Power 82 mW
Maximum safe voltage 250 V (Attention! The rated voltage can be lower.)
Maximum safe voltage 250 V (Attention! The rated voltage can be lower.)
Certificate TÜV 02 ATEX 1797 X
Marking Ex-Hexagon II 3G Ex nA II T4
Galvanic isolation
Input/Output safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Input/power supply safe electrical isolation acc. to IEC/EN 60079-11, voltage peak value 375 V
Directive conformity
Directive 2014/34/EU EN IEC 60079-0:2018+AC:2020 , EN 60079-11:2012 , EN 60079-15:2010
International approvals
FM approval
Control drawing 116-0129
UL approval
Control drawing 116-0173 (cULus)
IECEx approval
IECEx certificate IECEx BAS 10.0060
IECEx BAS 10.0061X
IECEx marking [Ex ia Ga] IIC, [Ex ia Da] IIIC, [Ex ia Ma] I
Ex ec IIC T4 Gc
General information
Supplementary information Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.



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