For Class 1, Div II applications, often referred to as Explosion proof applications the BLX V100EX has ATEX, FM, CSA, and British approvals as listed. This module, as with all other I/P modules can be added at any time. This module is directly mounted to the base model V100P and uses the actual supply air pressure, filtered with two 30 microns filters, to supply air to the I/P converter. The 3-15 is generated from the 4-20mA input signal and sent via a mounting plate into the pneumatic positioner signal diaphragm. The BLX V100EX can be ordered as an EX unit or can be very easily field converted.