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For distributed temperature sensing often a code correlation technology [2] [3] [4] is employed which carries elements from both principles. OTDR was developed more than 20 years ago and has become the industry standard for telecom loss measurements which detects the—compared to Raman signal very dominant— Rayleigh backscattering signals.
Distributed fibre-optic sensing (DFOS) technology is in use in the Americas, [18] Asia Pacific, Europe, and the Middle East, [19] as well as in Africa. [ 20 ] AP Sensing designed its Distributed Temperature Sensing (DTS) technology to monitor assets such as power cables and pipelines over large distances [ 5 ] as well as for fire detection in ...
Exhaust Gas Temperature Sensor 99: 153: 9 Exhaust Gas Temperature Sensor 9A: 154: 6 Hybrid/EV Vehicle System Data, Battery, Voltage 9B: 155: 4 Diesel Exhaust Fluid Sensor Data % 9C: 156: 17 O2 Sensor Data 9D: 157: 4 Engine Fuel Rate g/s 9E: 158: 2 Engine Exhaust Flow Rate kg/h 9F: 159: 9 Fuel System Percentage Use A0: 160: 4
A thermal switch (sometimes thermal reset or thermal cutout (TCO)) is a device which normally opens at a high temperature (often with a faint "plink" sound) and re-closes when the temperature drops. The thermal switch may be a bimetallic strip , often encased in a tubular glass bulb to protect it from dust or short circuit .
Distributed switching is often used in telephone networks, though it is often called host-remote switching.. In rural areas, population centers tend to be too small for economical deployment of a full-featured dedicated telephone exchange, and distances between these centers make transmission costs relatively high.
These sense the air temperature using the differential expansion of two metals to actuate an on/off switch. [14] Typically the central system would be switched on when the temperature drops below the setpoint on the thermostat, and switched off when it rises above, with a few degrees of hysteresis to prevent excessive switching.
Occupancy sensor types include: PIR sensors, which work on heat difference detection, measuring infrared radiation.Inside the device is a pyroelectric sensor which can detect the sudden presence of objects (such as humans) who radiate a temperature different from the temperature of the background, such as the room temperature of a wall.
A distribution management system (DMS) is a collection of applications designed to monitor and control the electric power distribution networks efficiently and reliably. It acts as a decision support system to assist the control room and field operating personnel with the monitoring and control of the electric distribution system.