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IECEx Certificate
of Conformity
Certificate No.:
IECEx SIR 19.0026X
Date of issue:
2021-03-11
Page 3 of 4
Issue No: 1
EQUIPMENT:
Equipment and systems covered by this Certificate are as follows:
SPECIFIC CONDITIONS OF USE: YES as shown below:
The MPI /
MPXI Series Magnetostrictive Level sensor is used for level readings of liquid level measurement applications. The device
transmits an electrical pulse down a ferromagnetic wire which, when encountering a magnetic field, causes a torsion on the wire, resulting in
part of the transmitted pulse being reflected back up the wire. This reflected pulse is then picked up by a coil input into the circuit. The on-
board processor calculates the distance based on the time of flight of the return echo. An on-board temperature sensor, as well as
temperature sensors in the stem, allow for temperature compensation. The model MPI is comprised of an aluminium enclosure that houses a
PCA and internal wiring, and a stem, which houses the ferromagnetic wire and the digital temperature sensors.
The model MPXI is similar in construction to the model MPI with the difference that model MPXI incorporates built in internal IS barrier
providing intrinsically safe connections to the level sensor.
The equipment is housed in the flame proof enclosure manufactured by Limatherm S.A. models XD-I or XD-I80 certified under IECEx FTZU
12.0017U and IECEx FTZU 13.0026U respectively intended to be installed in Zone 1 with the intrinsically safe probe intended to be installed
in Zone 0 attached to the enclosure.
Refer to the Annexe for Entity parameters and coding.
1.
2.
3.
4.
5.
Under certain extreme circumstances, the non-metallic parts incorporated in the enclosure of this equipment may generate an ignition-
capable level of electrostatic charge. Therefore the equipment shall not be installed in a location where the external conditions are
conducive to the build-up of electrostatic charge on such surfaces. In addition, the equipment shall only be cleaned with a damp cloth.
The enclosure is manufactured from Aluminium. In rare cases, ignition sources due to impact and friction sparks could occur. This shall be
considered during installation.
Model MPXI shall be installed as per drawing 9006113.
Unused entries of model MPXI shall be closed with blanking elements maintaining explosion proof properties and ingress protection rating
of the enclosure.
For information on the dimensions of the flameproof joints the manufacturer shall be contacted.
