The TRIBO.dsp U3400H, considered to be the industry’s first two-wire, loop-powered wide dynamic range particulate monitor for both high and low temperature applications utilizing HART protocol, now carries Hazardous Location Certification by CSA International. The U3400H can be used for Class I, Division 1, Groups C, D; Class II, Division 1, Groups E,F,G; Class III; also Class I, Zone 0, Group IIB. Simple to install and requiring no operator sensitivity adjustment, it is suitable for all emission monitoring and process flow applications where a continuous 4 to 20 mA signal is needed. The HART protocol adds more functionality by allowing bi-directional communication with the unit for remote access and control. The U3400H can be wired directly to a PLC, DCS, data loggers, or any control device capable of providing the 24V loop power while simultaneously receiving the continuous 4 to 20 mA signal.