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  2. Infrared open-path detector - Wikipedia

    en.wikipedia.org/wiki/Infrared_open-path_detector

    An open path detector usually costs more than a single point detector, so there is little incentive for applications that play to a point detector's strengths: where the point detector can be placed at the known location of the highest gas concentration, and a relatively slow response is acceptable. The open path detector excels in outdoor ...

  3. Magnetic chip detector - Wikipedia

    en.wikipedia.org/wiki/Magnetic_chip_detector

    A magnetic chip detector is an electronic instrument that attracts ferromagnetic particles (mostly iron chips). It is mainly used in aircraft engine oil and helicopter gearbox chip detection systems. Chip detectors can provide an early warning of an impending engine failure and thus greatly reduce the cost of an engine overhaul.

  4. Defect detector - Wikipedia

    en.wikipedia.org/wiki/Defect_detector

    A defect detector would sound like this: (This was the read out of CSX train Q452-05 by the Campville Defect Detector on April 6, 2019. The defect detector is located at Campville, Florida, on the CSX Wildwood Subdivision.) CSX EQUIPMENT DEFECT DETECTOR. MILEPOST 7-0-0-POINT-1. NO DEFECTS. NO DEFECTS. TOTAL AXLES 7-3-8. TRAIN LENGTH 1-3-7-6-4 ...

  5. Ford Expedition - Wikipedia

    en.wikipedia.org/wiki/Ford_Expedition

    The trailer brake controller is fully integrated into the Expedition's four-wheel, four-sensor, four-channel anti-lock braking system (ABS), and trailer sway control (TSC). [ 104 ] [ 105 ] Expeditions were offered with an adaptive pneumatic air-ride suspension system with self leveling, payload leveling and trailer load leveling capability from ...

  6. Cost Of Adding Metal Detectors To Subway Stations In NYC - AOL

    www.aol.com/cost-adding-metal-detectors-subway...

    So, what would it cost to add metal detectors? Each metal detecting machine costs about $2,200, and the city would need four turnstiles per station. That adds up to $8,800.

  7. Magnetic anomaly detector - Wikipedia

    en.wikipedia.org/wiki/Magnetic_anomaly_detector

    Another source estimates that a 100 m long and 10 m wide submarine would produce a magnetic flux of 13.33 nT at 500 m, 1.65 nT at 1 km and 0.01 nT at 5 km. [6] To reduce interference from electrical equipment or metal in the fuselage of the aircraft, the MAD sensor is placed at the end of a boom or on a towed aerodynamic device. [7]

  8. Position sensitive device - Wikipedia

    en.wikipedia.org/wiki/Position_sensitive_device

    The 2-D tetra-lateral PSD has the advantages of fast response, much lower dark current, easy bias application and lower fabrication cost. Its measurement accuracy and resolution is independent of the spot shape and size unlike the quadrant detector which could be easily changed by air turbulence.

  9. Optical beam smoke detector - Wikipedia

    en.wikipedia.org/wiki/Optical_beam_smoke_detector

    An optical beam smoke detector is a device that uses a projected beam of light to detect smoke across large areas, [1] typically as an indicator of fire. [2] They are used to detect fires in buildings where standard point smoke detectors would either be uneconomical [ 3 ] or restricted for use by the height of the building.