H2S Gas Monitor

H2s gas monitor detect and measure parts-per-billion (ppb) and parts-per-million (ppm) levels of hydrogen sulfide in ambient air, using electrochemical sensors to convert a chemical reaction into a tiny electrical current. This translates into a display of the H2S concentration on the sensor or in a personal monitor.

Hydrogen Sulfide (H2S) is a colorless toxic gas that smells like rotten eggs and can cause nausea, loss of smell, coughing, and death after prolonged exposure at levels as low as 2ppm. It naturally occurs during the chemical breakdown of organic compounds in the absence of oxygen. It is commonly found in sour petroleum, natural gas, and sewage.

Depending on the technology used, different H2S detectors have a variety of sensing materials and detection principles that can be applied in different monitoring environments. For example, semiconducting metal-oxide and electrochemical sensors rely on conductivity impedance, amperometry, potentiometry, cyclic voltammetry, and other techniques. Optical sensors are usually based on absorption and fluorescence, as well as colorimetry.

Top H2S Gas Monitors for Reliable Detection and Safety

Portable single-gas H2S monitors are designed to be carried on the worker’s body or attached to a harness to keep them close and easily accessible. Some models are dustproof, waterproof to a depth of 1 meter, and intrinsically safe (certified not to spark or burn in the presence of combustible or flammable gases and liquids). Others have dataloggers that record up to a month’s worth of continuous measurement.

Most H2S gas monitors have alarm annunciation that includes vibration and a flashing light to draw workers’ attention when the sensor activates. Many also have a docking station and downloadable data to help maintain the device and keep it up to date with the latest regulations, such as those set by the Occupational Safety and Health Administration (OSHA).