Certificate history:
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.
STANDARDS: 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 flameproof terminal box with installed electronic barriers
Electrical data
Barrier type P2-2LH
Supply and signal circuit
(Terminals Kl1[+], Kl2[-])
U = 20 … 36 V d. c.
Um = 253 V a. c.
PA terminal
Connection to the potential equalisation in the explosion hazardous area
Signal circuit
(Connection wires)
in type of protection „Intrinsic Safety“ Ex ia IIC
maximum values:
Uo = 18.4 V
Io = 115.8 mA (dynamic) and 68 mA (static)
Po = 534 mW (dynamic) and 518 mW (static)
characteristic line: linear
Co = 180 nF
Lo = 2.4 mH
The effective internal capacitance and inductance is negligibly small.
Barrier type P2-4LH
(Terminals Kl1, Kl2
U = 20 … 253 V a. c.
(Terminals Kl3[+], Kl4[-], Kl [GND])
4 … 20 mA superposed with a HART signal
Uo = 22.95 V
Io = 111.5 mA (dynamic) and 68 mA (static)
Po = 640 mW (dynamic) and 608 mW (static)
Co = 120 nF
Lo = 0.2 mH
Barriers type KLEMP2-2LHD and KLEMP2-2LPAD
U = 9 … 36 V d. c. (KLEMP2-2LPAD)
U = 20 … 36 V d. c. (KLEMP2-2LHD)
Io = 125.2 mA (dynamic) and 68 mA (static)
Po = 576 mW (dynamic) and 571 mW (static)
Co = 170 nF
Lo = 2 mH
The intrinsically safe signal circuit of the barrier type KLEMP2-2LHD and KLEMP2-2LPAD is safely galvanically separated from the non intrinsically safe circuits up to the peak crest value of the voltage of 375 V.
Hints for the installation
1. The overpressure routine test is not required, because it was carried out a successful type test at 4 times the reference pressure
2. The flameproof terminal box (Ex-d connection room) of this equipment must be provided with cable entries and filler plugs resp. conduits which are certified according to IEC 60 079-0 and IEC 60 079-1.
3. The connection cables, the cable entries and filler plugs resp. the conduits have to be suitable for the lowest ambient temperature.
4. The PA terminal of the Ex-d connection room with the barrier type P2-2LH and type P2-4LH (internal or external screw terminal) has to be connected with the potential equalization of the explosion hazardous area.
5. The intrinsically safe supply and signal circuits of the barriers type KLEMP2-2LHD and
KLEMP2-2LPAD are safe galvanically separated from the non intrinsically safe signal circuits up to a peak crest value of the voltage of 375 V.
The intrinsically safe signal circuits of the barriers type P2-2LH and P2-4LH are galvanically connected with the earth potential.
6. The maximum values for Co and Lo are also allowed to be used up to the permissible limits as concentrated capacitances and as concentrated inductances.
7. The intrinsically safe signal circuits of the barriers type P2-2LH and P2-4LH have to be safely isolated from conductive parts at earth potential.
