{"version":1,"type":"rich","provider_name":"Libsyn","provider_url":"https:\/\/www.libsyn.com","height":90,"width":600,"title":"EP249 The Hidden Hazards: CO, H\u2082S and the Tech Behind Modern Gas Detection With Dave Massner from Sensorcon (December 2025)","description":"Episode quotes: \u201cHydrogen sulfide doesn\u2019t announce itself. It can drift in, hit your mucus membranes, and start causing real harm before you know it\u2019s there.\u201d \u201cYou can\u2019t treat sensor response like magic\u2014it\u2019s physics, chemistry, and smart filtering working together to tell you what\u2019s actually happening in the space.\u201d In this episode, Bill & Eric sit down with Dave Massner from Sensorcon, a long-time technical contributor in the world of portable gas detection, to dig into the realities behind CO, H\u2082S, and O\u2082 sensing in both HVAC and industrial environments. Bill recaps the origins of their relationship with Sensorcon, which sets the stage for Dave to explain why gas detection still matters and brings in real-world examples\u2014from oil fields to everyday equipment rooms\u2014to show how invisible hazards shape how techs should approach safety. The conversation explores lesser-understood threats like hydrogen sulfide (H\u2082S)\u2014a gas that can travel with the wind in oil and gas regions and incapacitate workers before they realize it\u2019s there. We discuss the physiology, the chemistry, and the grim speed at which exposure can become deadly. From there, we shift to oxygen depletion, clarifying what \u201ctoo low\u201d actually means in field work and why measuring O\u2082 is just as important as detecting toxic gases. The episode also gets into the nuts and bolts of sensor behavior: signal-to-noise ratios, filtering, raw output, response time, and the clever algorithms that help instruments stabilize faster without sacrificing accuracy. Toward the end, we highlight Sensorcon\u2019s ongoing efforts in training, education, and transparency, pointing listeners to the company\u2019s technical blog posts, videos, and calibration resources. We also make the case for low-level CO alarms and why TruTech Tools has championed them for over a decade. As we wrap up, we leave listeners with a simple takeaway: understand your sensors, understand your risks, and choose equipment that treats safety as something more than a checkbox. Dave\u2019s LinkedIn: https:\/\/www.linkedin.com\/in\/david-massner-30291189\/ Sensorcon at TTT: https:\/\/trutechtools.com\/sensorcon-solutions.html Sensorcon blog posts:https:\/\/sensorcon-sensing-products-by-molex.myshopify.com\/blogs\/news\/ Sensorcon  videos: https:\/\/sensorcon-sensing-products-by-molex.myshopify.com\/pages\/inspector-videos Low-level CO alarms at TruTech Tools: https:\/\/trutechtools.com\/installedco   This episode was recorded in December 2025.   ","author_name":"Building HVAC Science","author_url":"https:\/\/www.buildinghvacscience.com","html":"