Alarm Mercury Tilt Switches

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  • Power System Protection 3: Application
    The bucket will not then be fully immersed and the weight of the oil left behind will cause the whole assembly to tilt , closing its mercury switch and completing the alarm circuit.
  • ISA FUND IND CNTRL - Fundamentals of Industrial Control
    If the level falls, the sleeve drops below the magnetic position, the magnet is pulled away from the sleeve area, and the mercury switch tilts in the opposite angle, activating the contacts to sound an alarm or start a pump.
  • Transformers, Second Edition > Transformer Auxiliaries and Oil Preservation Systems
    When a sufficient volume of gas is collected in the relay, the top bucket, because of its extra weight due to oil contained, tilts , overcoming the balance weight which closes the mercury switch and initiates an audible alarm .
  • Smart assistive accident free wheelchair system (SAAFWS)
    The idea is to place a mercury switch on the center bottom of the wheel chair, or any edge so as in case the chair tilts to either side, it will … the motors and a notification alarm is sent to inform…
  • Belgium - RoHS substances in electrical and electronic equipment
    …waste, lubrication, etc. • Equipment Control: magnetic valve, cooling equipment, motors, etc. • Alarm /Outputs: programmable logic .... Mercury tilt switches are small tubes with electrical contacts at one end of the tube.
  • Evaluation of intrusion sensors and video assessment in areas of restricted passage
    The addition of another tilt mercury switch ,wired in a series inside each horizontal bar, would make defeating the sensor more difficult. .... must all be reset to their exact position to return to a secure state after an alarm .
  • Power System Protection 1: Principles and components
    The oil flow is directed by a baffle plate so as to tilt the lower bucket assembly causing the corresponding mercury switch to isolate the transformer. .... Loss of oil due to leakage will operate the alarm and trip contacts in turn.
  • Practical Manual of Chemical Plant Equipment
    The bulb can be tilted and if tilted so that the mercury comes down to the end where the two wires are located the electrical circuit is completed. .... These mercury pressure switches can be used to set off an alarm if pressure becomes too high or too low.
  • Safe as Houses
    To prevent false alarms that could be caused by harmless vibrations, the switches can also be equipped with a time delay feature. .... In the past, most of these switches used mercury contacts with up to six contact points per x- or y- tilt axis, which would be individually adjusted to a specific degree of tilt.
  • SecureTech{TM} Systems Wireless Portable Alarm Systems{TM}
    The system is installed in high-risk areas and can be activated by call buttons, door contacts, motion sensors, mercury tilt switches or pressure pads. .... When the wireless alarm is activated, the unit sends a prerecorded voice message directly to the officers'…