MIVI Technical Manual
REF: 379/4 7
1.4.3
FM flameproof enclosure certification
MIVI FM sensors are in agreement with FMRC-3615 class (FM) for equipment installed in explosive
gas atmospheres:
MIVI FM
For FM sensors, it is necessary to add a protection in accordance to the area’s risks level. As long as
the cable is in a hazardous area, it should be protected as recommended in the 2011 NEC
code digest, appendix IV.
Our sensors are certified until the end of the flexible conduit, where we connected a NPT joint (see
APPENDIX D). For connecting the sensor in agreement with the class, the installer should
follow the instructions given in the 2011 NEC code digest, appendix IV.
This means a conduit seal has to be connected to our NPT joint, according to the examples you
have hereunder.
This equipment is not provided by SOFRASER.
Class I, Div. 1, Groups A, B, C & D T4A
ambient temp. range: from -20°C to 100°C
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