The flames height varied depending on the presence of methane (higher) or the lack of oxygen (lower). To prevent ignition with these lamps the flame was contained within a glass sleeve with a mesh flame arrestor. The flame safety lamp consisted of an oil flame adjusted to specific height in fresh air.

The first gas detector in the industrial age was the flame safety lamp (or Davy lamp) was invented by Sir Humphry Davy (of England) in 1815 to detect the presence of methane (firedamp) in underground coal mines. The canary, normally a very songful bird, would stop singing and eventually die if not removed from these gases, signaling the miners to exit the mine quickly. Through the 19th and early 20th centuries, coal miners would bring canaries down to the tunnels with them as an early detection system against life-threatening gases such as carbon dioxide, carbon monoxide and methane. Before modern electronic sensors, early detection methods relied on less precise detectors. Gas leak detection methods became a concern after the effects of harmful gases on human health were discovered. All of these sensors are used for a wide range of applications and can be found in industrial plants, refineries, pharmaceutical manufacturing, fumigation facilities, paper pulp mills, aircraft and shipbuilding facilities, hazmat operations, waste-water treatment facilities, vehicles, indoor air quality testing and homes. More recently, infrared imaging sensors have come into use. Common sensors include combustible gas sensors, photoionization detectors, infrared point sensors, ultrasonic sensors, electrochemical gas sensors, and metal-oxide-semiconductor sensors (MOS sensors). Exposure to toxic gases can also occur in operations such as painting, fumigation, fuel filling, construction, excavation of contaminated soils, landfill operations, entering confined spaces, etc. Additionally a visual identification can be done using a thermal camera These sensors usually employ an audible alarm to alert people when a dangerous gas has been detected. Gas leak detection is the process of identifying potentially hazardous gas leaks by sensors.

This type of device is used widely in industry and can be found in locations, such as on oil rigs, to monitor manufacturing processes and emerging technologies such as photovoltaic. YeastForce – gas volume determination (e.g.Gas detectors can be used to detect combustible, flammable and toxic gases, and oxygen depletion. Yieldmaster – fully automated BMP determinationīlueVCount – gas counter for high and low gas flows BlueSens off-gas analyzers are in use with cell culture and microbial fermentations and suitable for use single use bioreactors (SUB) & fermenters (SUF). Offering a variety of connections BlueSens sensors can be operated with fermenters from all manufacturers with vessel volumes from shake flask up to manufacturing scale systems. Digital and analog data communication is standard with all sensors and requiring no additional hardware. No minimum or maximum flow rates are necessary. BlueSens analyzers can operate in fully saturated gas streams and require no pretreatment of the gas stream. Analyzers provide PAT-conforming online measurements in real-time.Īll sensors deliver continuous off-gas data. BlueSens offers single gas analyzers for CO 2, O 2, H 2, CO, CH 4, EtOH ( BCP-series) as well as combined units ( BlueInOne& BlueVary) for gas combinations CO 2/O 2, CH 4/CO 2 & CO 2/H 2. Only high-quality components are used to build our sensors. BlueSens offers reliable, accurate and precise off-gas analyzers made in Germany.

Bluesense off gas sensors