Conspec's P1229 Blue Barrior is an MSHA evaluated power circuit barrior to reduce the available power supplied to instruments located in permissive areas. Conspec's Blue Barrior can be used with any MSHA class "G" instrument for monitoring in return airways or permissive areas.

The P1229 Blue Barrior is installed in fresh air or NON-I.S. airways and permits up to four instruments to be connected in parallel on the P1209 four conductors Conspec trunk cable. The number of instruments established on a single barrior is determined by the amount of power required by each unit.

The P1229 can be used as a stand-alone instrument barrior for with approved sensors or can be connected to your Senturion monitoring to provide MSHA required protection in permissive areas.