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An oxygen sensor (or lambda sensor, where lambda refers to air–fuel equivalence ratio, usually denoted by λ) or probe or sond, is an electronic device that measures the proportion of oxygen (O 2) in the gas or liquid being analyzed. [1] It was developed by Robert Bosch GmbH during the late 1960s under the supervision of Günter Bauman. [1]
This test does not only validate the cell. If the sensor does not display the expected value, it is possible that the oxygen sensor, the pressure sensor (depth), or the gas mixture F O 2, or any combination of these may be faulty. As all three of these possible faults could be life-threatening, the test is quite powerful.
Sensors are usually designed so that the gas supply is limited by diffusion, and thus the output from the sensor is linearly proportional to the gas concentration. This linear output is one of the advantages of electrochemical sensors over other sensor technologies (e.g. infrared), whose output must be linearized before they can be used.
The modern era of gas detection started in 1926–1927 with the development of the catalytic combustion (LEL) sensor by Dr.Oliver Johnson. Dr Johnson was an employee of Standard Oil Company in California (now Chevron), he began research and development on a method to detect combustible mixtures in air to help prevent explosions in fuel storage ...
2 surface-search, TWS channels. Mark 92 modification 2 is the version that was originally fit to USN Oliver Hazard Perry-class guided missile frigates. It was also installed on the Adelaide-class derivatives built for Australia. Gun and missile control: 2 air engagement channels, including STIR with Mark 107 console 2 surface-search, TWS channels
Valkiri-22 Mk 1 (original version): 24 launch tubes mounted on a Unimog light 4x4 truck. Bateleur (current version): 40 launch tubes mounted on an armoured Samil 100 6x6 truck. Valkiri-5 a shortened lighter trailer-mounted version for airborne use. It has 12 launch tubes and uses a shortened version of the 127 mm rocket that has a maximum range ...
The levels of NO are around 100–2000 ppm (parts per million) and NO 2 20–200 ppm in a range of 1–10% O 2. The sensor has to be very sensitive to pick up these levels. The main challenges in the sensor development are selectivity, sensitivity, stability, reproducibility, response time, limit of detection, and cost.
The 9K115-2 Metis-M (NATO reporting name AT-13 Saxhorn-2) is a Russian portable [5] anti-tank guided missile system. "9K115-2" is the GRAU designation of the missile system. The Metis-M1 is the latest upgraded variant of Metis-M. [5] The system is designed to augment the combat power of company-level motorized units.