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Most Mercury Vapor Lamp Fixtures have a PLUG IN module on top of the fixture. Most are about the size of an inverted "shot glass" and have a photocell "eye" somewhere on the outside surface. Typically, you turn the Module counterclockwise to "unlock" the module from the socket and pull the module UP and off the top of the lamp fixture.
Failure mode for these Light Sensors are twofold: Either [ 1 ] the electric eye's lens gets cloudy and the light stays on unless it is VERY sunny....or [ 2 ] the Module, being mounted ABOVE the light fixture gets HOT...and over the years the module gets COOKED and fails. Take the light sensor with you to an electrical supply house and match it up with a new one !!
BYW: Inspect the socket and plug of the Light Sensor module & lamp fixture. Often the "cooked module" will fail because of socket/plug failure. The plug/socket Phenolic materials break down from the heat over the years . Or the contacts corrode.
NOTE: It is important , when installing the Light fixture...that the plug-in Light Sensor' photocell lens is pointing AWAY from the building or other mounting structure. If the "electric eye' is facing the structure..the reflected light will confuse the light sensor and the lamp will come on DIM[*] , flicker or turn off & on constantly.
[ * ] Do not confuse the " comes on DIM " statement with the normal DIM warmup cycle of the lamp.
It is also advised to have the High Output Merury Vapor LIght on a dedicated electrical circuit. If you are using an existing circuit for outside-the-house loads..... such things like pool pumps etc will extinguish the lamp when the pump kicks in.. The pump's heavy inductive load in-rush current on startup will cause the lamp to go out..... in a few minutes the lamp will restart, warm up and come back at full intensity.
To replace a mercury vapor light sensor, first turn off power to the light fixture. Then, remove the old sensor by unscrewing it from the fixture and disconnecting the wires. Install the new sensor by connecting the wires and screwing it securely into place. Finally, restore power and test the light to ensure the sensor is functioning correctly.
The sensor has to be in its socket to test it as it needs power to it to operate. Cover the sensor completely with a dark cloth so that no light can get to any part of the sensor. The light fixture should turn on. If it does not then remove the lamp from the fixture and check for voltage in the lamp socket. If there is voltage there, then the lamp is At Fault. What we are now checking for is whether the sensor is operating and the lamp or ballast is at fault. If there is voltage at the lamp socket then the sensor is operating. If there is no voltage at the lamp socket or ballast the sensor is faulty, it needs to be changed out for a new one.
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When a common fluorescent lamp is on the mercury vapor inside is actually in a which state?
When a common fluorescent lamp is on, the mercury vapor inside is in an excited state. When an electric current passes through the mercury vapor, it excites the mercury atoms, causing them to release ultraviolet light. This ultraviolet light then interacts with the phosphor coating on the inside of the lamp, producing visible light.
Which puts out the greater percentage of its energy as light an incandescent lamp or a mercury vapor lamp?
A mercury vapor lamp puts out a greater percentage of its energy as light compared to an incandescent lamp. Mercury vapor lamps are more efficient at converting energy into light, whereas incandescent lamps produce more heat than light, making them less energy efficient.
What element is found in fluorescent light fixtures?
Mercury is the element found in fluorescent light fixtures. It is used in the form of mercury vapor, which produces ultraviolet light when electricity passes through it, causing the phosphor coating inside the tube to fluoresce and produce visible light.
How are cfls made?
CFLs (compact fluorescent lamps) are made using a glass tube coated with phosphor and filled with a small amount of mercury vapor. When an electric current flows through the tube, it excites the mercury vapor to produce ultraviolet light. The phosphor coating on the tube then converts the ultraviolet light into visible light.
Which light is brighter Metal Halide or mercury Vapor?
Metal Halide lights are generally brighter than mercury vapor lights. Metal halide lights produce a higher quality and more natural light, making them a popular choice for outdoor lighting in stadiums, parking lots, and other large commercial spaces. Mercury vapor lights tend to have a bluish-green tint and are less bright compared to metal halide lights.
How does a mercury vapor light work?
A mercury vapor light works by passing an electric current through mercury vapor inside a sealed tube. This process causes the mercury vapor to emit ultraviolet light, which then excites a phosphor coating on the inner surface of the tube to produce visible light.
What is the difference between sodium vapor and mercury vapor streetlight?
Sodium vapor streetlights emit a warm yellow-orange light, while mercury vapor streetlights emit a bluish-white light. Sodium vapor lights are more energy-efficient and have a longer lifespan compared to mercury vapor lights. Additionally, sodium vapor lights are better at preserving night vision and reducing light pollution.
What element is in fluorescent light tubes?
Fluorescent light tubes contain mercury vapor as well as an inert gas, such as argon or krypton. When an electric current passes through the tube, it excites the mercury vapor, causing it to emit ultraviolet light that is then converted into visible light when it interacts with the phosphor coating inside the tube.
When a common fluorescent lamp is on the mercury vapor inside is actually in a which state?
When a common fluorescent lamp is on, the mercury vapor inside is in an excited state. When an electric current passes through the mercury vapor, it excites the mercury atoms, causing them to release ultraviolet light. This ultraviolet light then interacts with the phosphor coating on the inside of the lamp, producing visible light.
How might you distinguish a sodium vapor streetlight from a mercury vapor streetlight?
You can distinguish sodium vapor streetlights from mercury vapor streetlights by observing their color. Sodium vapor streetlights emit a warm orange-yellow light, while mercury vapor streetlights produce a blue-white light. Sodium vapor streetlights are also generally more energy-efficient than mercury vapor streetlights.
If you replace mercury light with sodium vapour lamp in spectrometer experiment what colors do you observe in the spectrum?
If you replace a mercury light with a sodium vapor lamp in a spectrometer experiment, you would observe only a few specific colors in the spectrum. These colors would correspond to the characteristic emission lines of sodium, such as the bright yellow spectral lines at 589.0 nm and 589.6 nm. Sodium vapor lamps emit light predominantly in the yellow region of the spectrum.
How do you change fuel vapor sensor on a 1997 gmc sonoma?
To change a fuel vapor sensor on a 1997 GMC Sonoma you need to disconnect the wires that are holding it in place. Next, remove the old sensor and replace with the new one.
Why is mercury vapor use in light bulb?
Mercury vapor is used in fluorescent and other types of gas-discharge lamps because it produces ultraviolet light when electrified, which then excites phosphor coatings on the inside of the lamp to produce visible light. This process is much more energy-efficient than traditional incandescent bulbs, making mercury vapor a common choice for lighting applications.
How the tube light works?
It is a low weight mercury-vapor gas-release light that uses fluorescence to deliver obvious light. An electric current in the gas energizes mercury vapor which creates short-wave bright light that then causes a phosphor covering within the globule to sparkle.
What gas produces blue light bulb?
Blue light bulbs typically use a gas called mercury vapor to produce light. When an electric current passes through the mercury vapor, it creates ultraviolet light which then interacts with a phosphor coating on the inside of the bulb to produce visible blue light.
Why Mercury vapours are used in Mercury vapor lamp?
Ionized mercury vapor radiates in the near ultra-violet (a high energy source of radiation) which energizes the fluorescent coating inside the bulbs.
What are the Energy pathway for fluorescent source?
Fluorescent bulbs produce light by passing an electric current through a tube filled with mercury vapor and a phosphor coating. The electric current excites the mercury vapor, producing ultraviolet light. The phosphor coating then absorbs the ultraviolet light and re-emits it as visible light.
