What is the length of a fluorescent light tube?
Fluorescent lamp tubes are often straight and range in length from about 100 millimeters (3.9 in) for miniature lamps, to 2.43 meters (8.0 ft) for high-output lamps. Some lamps have the tube bent into a circle, used for table lamps or other places where a more compact light source is desired.
How much does a fluorescent light bulb weigh?
The average fluorescent light bulb weighs about 3 to 5 ounces. That would make the weight of four of them to be about 12 to 20 ounces. Home Subjects
What type of light is produced by a fluorescent tube?
Fluorescent lamp. A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.
What is the size of a T4 fluorescent tube?
Here are the common fluorescent tube sizes: F17T8/CW/2P: T2 fluoro tubes – 42“ fluorescent tube in a 2-foot length F17T8/CW/4P: T4 fluoro tubes – 42“ fluorescent tube in a 4- foot length F17T8/CW/8P: T8 fluoro tubes – 42“ fluorescent tube in a 8- foot length The T4 fluorescent tube is also known as a “mini-tubular.”
How much do fluorescent tubes weigh?
Typical F40 ballasts weigh about 3.5 lbs., and F96 ballasts weigh about 8 lbs.
What is the weight of a 4 foot fluorescent tube?
Technical DetailsBulb Shape SizeT8Luminous Flux1800 LumenManufacturerSYLVANIAPart Number21880Item Weight8 ounces23 more rows
How much does a 8 foot fluorescent bulb weight?
Technical DetailsBulb Shape SizeT8ManufacturerFALANFAPart NumberFA8V-6000-8ft-TM25Item Weight25 poundsPackage Dimensions94.5 x 7.9 x 7 inches18 more rows
How much does a compact fluorescent bulb weigh?
PLT SSW4PK 14-watt compact fluorescent light bulbs are designed to replace 60-watt incandescent light bulbs....Product Attributes.Wattage14 WattLength4.3 in.Diameter1.9 in.Package Quantity4Weight0.4 lb.6 more rows
How much does a T8 bulb weigh?
Technical DetailsController TypePush ButtonLuminous Flux3050 LumenManufacturerSunshine LightingPart NumberF32T8/SP841Item Weight13.42 pounds18 more rows
Does a ballast use electricity?
They consume eight to 10 watts when operating with the lamp in the circuit. The ballast will consume about four watts when the lamps are removed although the ballast is still energized. Electronic ballasts start and regulate fluorescent lamps with the use of electronic components.
What size is a standard fluorescent tube?
Fluorescent circline tubes are typically 1 and 1/8 of an inch in diameter. Their outside diameter (which is measuring the circle from one end to the other) comes in four options – 6, 8, 12, and 16 inches.
What does T8 mean?
What does “T8” mean? The “T” designation in fluorescent lamp nomenclature stands for tubular — the shape of the lamp. The number immediately follow- ing the T gives the diameter of the lamp in eighths of an inch.
What is T8 vs T12?
The main difference between T8 and T12 tubes is the tube's diameter. T12 tubes are 1.5" in diameter while T8s are just one inch. All other things—socket sizes, lengths, distance between pins—are the same. T8 LED tubes won't fall out if you try to install them in a T12 fixture—they'll fit just fine.
Why CFL is banned?
Like all fluorescent lamps, CFLs contain toxic mercury, which complicates their disposal. In many countries, governments have banned the disposal of CFLs together with regular garbage. These countries have established special collection systems for CFLs and other hazardous waste.
Which is better CFL or LED?
LEDs are more efficient than even CFLs: A 16.5-watt LED bulb is equivalent to a 20-watt CFL and a 75-watt incandescent.
What is the quantity of fluorescent lamp?
Wattage of Fluorescent TubeBulb Type200-300 Lumens700-1,000 LumensIncandescent25-30 watts75 wattsCFL5-6 watts15 watts
What size is a T12?
1.5-inch diameterT12s are 1.5-inch diameter fluorescent tubes. These are the oldest of the fluorescent tubes and they almost always run off magnetic ballasts, which are no longer manufactured. Typically, you see T12s in troffers.
How are T4 bulbs measured?
Length: You must measure this from pin to pin at the end of your tube. Diameter: This is the length of a straight line going from one side of the circle (or the tube) to the other. Don't forget the circular fluorescent tubes!
What is the longest fluorescent tube?
The lengths of these tubes are commonly indicated by the wattage. The smallest fluorescent tube is the T2 and it has a length of between 250mm and 760mm. The next longest tube is the T4, with a total length of anywhere between 150mm and 1,500mm. This is followed by the T5, with a length of between 340mm and 1,800mm.
What is the length of a T12 bulb?
Common tube ratingsTube diameter in 1⁄8 in (3.175 mm)Nominal lengthNominal power (W)T124 ft (1,219 mm)40T125 ft (1,524 mm)65, 80T126 ft (1,829 mm)75, 85T128 ft (2,438 mm)12513 more rows
What is the difference between T5 T8 and T12 lights?
In short, the difference between T5, T8, and T12 lights are the sizes and energy efficiency. The smaller T5 and T8 tubes use less energy and have l...
How do I know which fluorescent light bulb to buy?
When considering the question of how do I know which fluorescent light bulb to buy you need to figure out what you currently have. Once you have re...
What are the different types of fluorescent tubes?
What are the different types of fluorescent tubes? There are 3 types: T12 tubes, T8, and T5 tubes, and the T12 which is the oldest and being phased...
How long do fluorescent tubes last?
How long do fluorescent tubes last, well that depends a lot on its wattage, design, and application, But, expect between 7,000 and 15,000 hours. Bu...
What size lamp is used in a 2x2 troffer?
Occasionally, you’ll come across fluorescent bent lamps with a 1 and 5/8-inch leg spacing. When used in a 2x2 troffer, they will give off a very even, full amount of light.
How big is a fluorescent circline tube?
Their outside diameter (which is measuring the circle from one end to the other) comes in four options – 6, 8, 12, and 16 inches. Shop fluorescent circline lamps.
How long do T5s last?
Although they are the smallest, they are the most energy efficient and brightest. In fact, some T5s last up to 90,000 hours.
What are fluorescent lights used for?
Widely used – Fluorescents are used in a variety of applications across multiple industries . Hotels, commercial office buildings, grocery stores, healthcare facilities, warehouses, parking garages, and more all use fluorescent lighting. All fluorescent lamps use the same technology, but there are several different variations and sizes.
What is a fluorescent bent lamp?
Fluorescent bent lamps come in a few different options. The most common that we see is a fluorescent bent T8 with six-inch leg spacing. As you would expect, the tube is bent in a U-shape. For this reason, they could also be called U-bent fluorescents.
What is a linear fluorescent tube?
Linear fluorescent tubes. Linear fluorescent tubes are the most common type of fluorescent lamps. There are three common sizes, shown in the chart the below. The difference is in the diameter.
Where are T8s used?
Four-foot T8s, in particular, are used everywhere – in hospitals, commercial office spaces, schools, retail spaces, warehouses... everywhere. T8s are energy efficient, inexpensive, and produce a lot of light (lumens). Typically you’ll find T8s in troffers. However, you’ll also see them in strip lights, some high-bay fixtures, ...
What is the T5 T8 form?
Each one of these bulbs is also referred to as a form, so the shortened technical name of the bulb is T5 T8 T12 form. These three terms refer to the bulb length, so the light tube lengths are: T5: 1-inch diameter, medium length. T8: 2-inch diameter, extra-long length.
How many watts does a T12 tube have?
These tubes are produced by three major manufacturers in the U.S. These manufacturers produce similar quality tubes but in slightly different thicknesses. Thus, they range in wattage from 13W to 20W. The T12 tube’s slim size creates an attractive style but you must use care in how you use them in your aquarium.
What are the different sizes of fluorescent tubes?
Tubes used for general lighting are called tubular fluorescent lamps and come in four sizes: 2‘, 4‘, 8‘, and 12‘. Smaller wattage tubes are often called mini-tubes, mini-strips, or compact fluorescents (CFLs). Larger wattage tubes are called high output (HO) fluorescents. Some people refer to them as ‘triphosphor’ bulbs.
What is a T4 fluorescent light?
T4 Fluorescent Lights. The T4 fluorescent tube is also known as a “mini-tubular.”. As the name suggest, mini-tubulars are indeed smaller than regular (34") tubes and are ideal for low-light plant species. By comparison, the T5 fluorescent tube is usually 2.5 to 3 times larger than a T4 fluorescent tube.
How long is a T12 aquarium tube?
T12: Right between the two, 1.5-inches in diameter, extra-long length. T5 and T8 are the most commonly used tubes in today’s aquarium market. Both tubes are very similar in length and performance. They do differ, however, in the light spectrum that they produce.
Which is better, T4 or T5?
By comparison, the T5 fluorescent tube is usually 2.5 to 3 times larger than a T4 fluorescent tube. The T5 tube is the recommended tube for aquarium plants. It has a much higher luminescence per watt of power consumption than the T4. More luminescence results in more efficient photosynthesis and better coloration.
How long does a T8 fluorescent light last?
Its tube is 8 inches long and the fixture is called an F8T8. Light output is 75-82 lumens per watt (LPW) and the life span is about 15,000 hours. Don’t worry too much about the lamp’s life span, because it’s very unlikely that you will actually use it for that long.
What is EL panel?
EL panels are thin, lightweight, lower power ; require no diffuser and work at lower voltage than ccFLs. Unfortunately, most EL DC/AC inverters use a large transformer to generate the 400Hz 95V square wave required to drive the panel. Figure 35.12 ’s circuit, developed by Steve Pietkiewicz of LTc, eliminates the transformer by employing an LT1108 micropower DC/DC converter IC. The device generates a 95VDC potential via L1 and the diode-capacitor doubler network. The transistors switch the EL panel between 95V and ground. c1 blocks DC and R1 allows intensity adjustment. The 400Hz square wave drive signal can be supplied by the microprocessor or a simple multivibrator. When compared to conventional EL panel supplies, this circuit is noteworthy because it can be built in a square inch with a 0.5 inch height restriction. Additionally, all components are surface mount types, and the usual large and heavy 400Hz transformer is eliminated.
What are the two parts of fluorescent light?
There are two very distinct parts to fluorescent lighting: the tube and the fitting. Fluorescent tubes ionise mercury vapour to produce ultraviolet light, which is converted to visible light by the phosphor coating on the inside face of the tube.
How long do fluorescent tubes last?
Also, the life of good quality fluorescent tubes can be as high as 30,000 hrs. Although tube replacements will always be preferred by facilities that are cash strapped, the best way of replacing fluorescent troffers (rectangular recessed fluorescent fixture) with LEDs is to replace the full fixture with an LED fixture.
What is the best light for a lab?
The ideal general lighting in a laboratory or workshop is the traditional long fluorescent tube in its specialised fitting because such a large source provides diffuse lighting without shadows or glare over a large area. Many people suffer a lingering prejudice against fluorescent lights – probably because the long working life and difficulty of replacing a fluorescent tube compared to an incandescent lamp means that yellowing tubes remain flickering and buzzing in place long after they should have been retired. There are two very distinct parts to fluorescent lighting: the tube and the fitting.
How to eliminate flicker in fluorescent tubes?
HF ballasts apply >40 kHz to the fluorescent tube, eliminate flicker and are typically 5% more efficient than a choke ballast.
What is in fluorescent tubes?
Fluorescent tubes contain a mixture of argon and nitrogen at atmospheric pressure, including a small drop of vaporized mercury (Hg). From: Electricity, Magnetism, and Light, 2002. Download as PDF. About this page.
What happens if a PIR is turned off in a board room?
If PIRs turn off in the Board Room then at least they get a good sleep! PIRs can be used with almost all fluorescent lamps (fitted with suitable ballasts) in areas where lights are potentially on continuously, e.g., offices, toilets, canteens, workshops and services rooms.
Why do fluorescent lamps need a ballast?
Fluorescent lamps require a ballast to stabilize the current through the lamp, and to provide the initial striking voltage required to start the arc discharge. Often one ballast is shared between two or more lamps. Electromagnetic ballasts can produce an audible humming or buzzing noise.
What is fluorescent light?
A fluorescent lamp, or fluorescent tube, is a low-pressure mercury-vapor gas-discharge lamp that uses fluorescence to produce visible light. An electric current in the gas excites mercury vapor, which produces short-wave ultraviolet light that then causes a phosphor coating on the inside of the lamp to glow.
How many lumens does an incandescent bulb have?
In comparison, the luminous efficacy of an incandescent bulb is only 16 lumens per watt. Fluorescent lamp fixtures are more costly than incandescent lamps because they require a ballast to regulate the current through the lamp, but the lower energy cost typically offsets the higher initial cost.
What does the Hg symbol mean on a fluorescent light?
The (Hg) symbol indicates that this lamp contains mercury. In the US, this symbol is now required on all mercury-containing fluorescent lamps. Inside the lamp end of a preheat bi-pin lamp. In this lamp the filament is surrounded by an oblong metal cathode shield, which helps reduce lamp end darkening.
Why do fluorescent lights self destruct?
Fluorescent lamps are negative differential resistance devices, so as more current flows through them, the electrical resistance of the fluorescent lamp drops, allowing for even more current to flow. Connected directly to a constant-voltage power supply, a fluorescent lamp would rapidly self-destruct because of the uncontrolled current flow. To prevent this, fluorescent lamps must use a ballast to regulate the current flow through the lamp.
How much pressure is in a T12 lamp?
The partial pressure of the mercury vapor alone is about 0.8 Pa (8 millionths of atmospheric pressure), in a T12 40-watt lamp. The inner surface of the lamp is coated with a fluorescent coating made of varying blends of metallic and rare-earth phosphor salts.
Why does the starter switch not close?
The starter switch does not close again because the voltage across the lit tube is insufficient to start a glow discharge in the starter. Electronic fluorescent lamp starters.
