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Lightning and surge protection in intrinsically safe measuring circuits
R. STAHL Ex Magazine, 2021Processing or transporting combustible substances can often lead to the creation of mixtures capable of forming an explosive atmosphere. Strict safety precautions must be in place when setting up and operating systems in which substances of this kind may be present. This is also set out in Directive 1999/92/EC [1], which addresses the user or employer.
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Design of embedded fuel sensor based on intrinsically-safe circuit
2017 Chinese Automation Congress (CAC), 2017The accurate measurement of fuel level plays a significant role in the cruise time and safety performance of aircraft. Capacitive sensors are currently used to measure fuel level in many aircrafts. In order to reduce the wall destruction of fuel tank and solve the problem of intrinsically safety, researchers introduce a new capacitive sensor, based on ...
Mei Yuan +3 more
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2022 IEEE 5th International Electrical and Energy Conference (CIEEC), 2022
Dangshu Wang +6 more
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Dangshu Wang +6 more
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Study on Non-Explosive Assessing System for Intrinsically Safe Circuit
2009 International Conference on Information Engineering and Computer Science, 2009Due to the advantages of the intrinsically safe circuit, people are increasingly willing to make use of it in comprehensive automatization system and communication equipment. If practical non-explosive testing methods can be constructed base on discharge theory of intrinsically safe circuit, the designers will find it easier to grasp the performance of
Jian-hua Liu +4 more
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Equivalent Simple-Inductive-Circuit and Its Applications of Inner Intrinsically Safe Buck Converter
2016 International Symposium on Computer, Consumer and Control (IS3C), 2016To obtain the Equivalent Simple-Inductive-Circuit (ESIC) and the equivalent-inductance evaluating the inner intrinsic safety performance of the Buck Converter. The Inductor-Disconnected Arc Discharge (IDAD) behaviour of Inner intrinsically Safe Buck Converter (IISBC) is analyzed, and the equivalent-inductance expression is deduced according to the ESIC
Shu-Lin Liu, Yue-Yun Han, Li-Li Qi
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Energy and Power Criterion of Intrinsically Safe Circuits for Explosive Atmospheres
2011Arc discharge time(T) is determined to be in proportion to time constant(1) based on current linear attenuation model for intrinsically safe inductive circuits. It draws conclusions that maximum value of arc power(Pmax) is in proportion to arc energy(Wg) and is inverse to time constant (1).The conflicting fact that greater sparks can not cause gas ...
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Design and Implementation of a Spark Pulse Power Control Device for Intrinsically Safe Circuits
Journal of Nanoelectronics and OptoelectronicsThis paper presents the study and design of a control device capable of adjusting and monitoring spark pulse power and pulse width time. This device aids in the experimental analysis of spark discharge ignition mechanisms and explores the relationship between the spark power, discharge time, and energy. The device comprises two stages. The first stage
Meng-Ran You, Shu-Lin Liu, Dan-Dan Xu
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The Criterion of Intrinsic Safe Circuit Characteristic Based on Electric Arc Power
2011Intrinsic safety electric equipments are commonly used in coal wells . Because intrinsic safety electric equipments have not the flameproof shell, the determinacy whether the electric arcs can ignite gas becomes the important investigated subject . The energy criterion takes the minimum burning energy as standard.
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Determining the switching speed for the assessment of intrinsically safe circuits
2016Statistical characteristics of the sample of switching rate are defined. Atswitching rate on spark test apparatus of type I up to 0,5 km/s the density isdistributed according to the log-normal law, and above 0,5 km/s conforms with the gamma density.
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Energy Analysis of Short Circuit Discharge for Composite Intrinsically Safe Circuits
2024 7th International Conference on Mechatronics and Computer Technology Engineering (MCTE)Pengcheng Xue +5 more
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