This certificate is issued as verification that a sample(s), representative of production, was assessed and tested and found to comply with the IEC Standard list below and that the manufacturer's quality system, relating to the Ex products covered by this certificate, was assessed and found to comply with the IECEx Quality system requirements. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
This Unit verification certificate is issued as verification that the Apparatus identified on page 1, was assessed and tested and found to comply with the IEC Standard list below. This certificate is granted subject to the conditions as set out in IECEx Scheme Rules, IECEx 02 and Operational Documents as amended.
The electrical apparatus and any acceptable variations to it specified in the schedule of this certificate and the identified documents, was found to comply with the following standards:
As this is a Unit Verification Certificate, no QAR is applicable as this certificate is specific to the items listed by serial number or other unique identification.
The isolator KFD2-RCI-Ex1 is an interface that converts a digital input signal (0-24 Volt) coming from a Safe Area to a digital current output signal (4-20 mA) to drive a solenoid valve placed in Hazardous Area. An auxiliary analog output (with fixed current of about 11 mA) is available towards the Safe Area which provides the possibility of a HART communication between the safe-area and haz-area. The module is powered at nominal 24 Vdc either with screw terminals or through the Power-Rail.
The ambient temperature may vary in a range of -20°C to + 60 °C.
Not intrinsically safe circuits
Um : 253Vac
Rated voltage Un : 19 - 30 Vdc
Current absorbed : 40 - 30mA
Intrinsically safe circuits (terminals: 1+ 2+ 3-)
Uo : 24.5V Ci : 1.1nF
Io : 93.6mA Li : negligible
Po : 595mW
for gas Group IIC
Co : 0.104μF Lo : 4.05mH Lo/Ro : 60μH/Ω
for gas Group IIB
Co : 0.81μF Lo : 16.2mH Lo/Ro : 240μH/Ω
for gas Group IIA
Co : 2.82μF Lo : 32.4mH Lo/Ro : 480μH/Ω
Note: The above load parameters apply where:
- the external circuit contains no combined lumped inductance Li and capacitance Ci greater than 1% of the above values;
- the inductance and capacitance are distributed as in a cable;
- the external circuit contains either only lumped inductance Li or lumped capacitance Ci in combination with a cable.