High Pressure Sodium Lamps

Everyday Low Prices on High Pressure Sodium Lamps

Available for anyone to purchase
and not just limited to distributors, OEM's and business.

We have stock on the following HPS lamps: LU35/MED, LU50/MED, LU50/MOG, LU70/MED, LU70/MOG, LU100/MED, LU100/MOG, LU150/MED, LU150/MOG, LU250/MOG, LU400/MOG, LU250, LU400, LU1000, LU1000/MOG

High pressure sodium lamps are a type of lighting called HID or high intensity discharge. Some other kinds of HID lighting are metal halide, mercury vapor and low pressure sodium. High pressure sodium lamps have generally a greater light output, golden white light (sometimes people say yellowish) and require special ballasts and fixtures for each specific lamp. HPS bulbs are often used in industrial, security and roadway lighting because of their energy efficiency.

More Information on HID bulbs.
High intensity discharge (HID) bulbs contain compact arc tubes, which enclose various gases and metal salts, operating at relatively high pressures and temperatures. High intensity discharge is a general term for mercury, metal halide and hps. Mercury bulbs are a high intensity discharge light source operating at a relatively high pressure and temperature in which most of the light is produced by radiation from excited mercury vapor. Phosphor coatings on some lamp types add additional light and improve color rendering. Metal halide bulbs are a high-intensity discharge light source in which the light is produced by the radiation from mercury, plus halides of metals such as sodium, scandium, indium, and dysprosium. Some lamp types may also utilize phosphor coatings. High pressure sodium lamps are an HID light sources, which produce light by an electrical discharge through sodium vapor operating at relatively high pressures and temperatures.

Important bulb performance specifications to consider when searching for HID bulbs include spectral distribution, rated average life, lamp power, initial lumens, mean lumens, color rendering index, and color temperature. Spectral distribution is the wavelength range of the lamp. The rated average life refers to the bulb burning hours to median life expectancy. The lamp power specifies the wattage of the lamp. Initial lumens are the initial light output. A lumen is the international (SI) unit of luminous flux or quantity of light. Mean lumens specify the average lamp output over a designated amount of time (usually 40%-50% of the rated lamp life). The color rendering index is an indication of the ability of the lamp to render object colors in a normal, natural way. The higher the number (0-100), the better the color appearance. The color temperature is a measure of the visual "warmth" or "coolness" of the light from the lamp. The higher the value, the whiter or "cooler" the light appears. Important lamp size specifications to consider include maximum overall length and light center length. The light center length is the distance between the center of the arc tube and the light center length reference plane of the bulb choices for bulb bases for HID bulbs include medium, medium skirted, admedium, admedium skirted, mogul, base restricted mogul, position oriented mogul, recessed single contact, G-12, and PG-12.

Wattage of hps bulbs also varies depending upon the size of the light fixture. But hps bulbs produce much more light per watt then mercury vapor bulbs. This means that a smaller wattage hps bulb will produce as much light as a larger wattage mercury vapor bulb. For example smaller hps fixtures for use on the outside of residential or farm structures require the use of only a 70 watt bulb to produce the same amount of light as a 175 watt mercury vapor fixture and bulb. And larger hpsm fixtures require only 250 watt bulbs compared to the 400 watt bulbs required by larger mercury vapor fixtures. Using a smaller wattage bulb has a significant impact upon electricity consumption.