OleumTech has introduced two new hydrogen sulfide (H2S) gas detection transmitters: one to its OTC wireless sensor network platform and the other to its H Series hardwired process instrumentation product line. The new H2S Transmitters were designed to provide continuous monitoring of air quality and generate alarms when H2S levels exceed user-configured setpoints. These transmitters offer an H2S measurement range of 0 to 100 ppm with a resolution of 0.1 ppm, a field replaceable sensor module, two configurable alarm setpoints, two alarm status DOs, single button bump test operation, local LCD display, and Class I, Div. 1 certification.