How many lumens is a 400 watt high pressure sodium bulb?
50000 lumens
400-watt HPS bulbs provide about 44000 and 50000 lumens of light.
What are high pressure sodium bulbs used for?
High-pressure sodium (HPS) lamps have been widely used in industrial lighting, especially in large manufacturing facilities, and are commonly used as plant grow lights. They contain mercury. They have also been widely used for outdoor area lighting, such as on roadways, parking lots, and security areas.
What does high pressure sodium mean?
High-pressure sodium (HPS) lamps are part of the family of high intensity light bulbs that put out large amounts of light generally needed for street lighting and security lighting. The combination of metals and gasses within inside the glass tube produces an orange-white light commonly found in street lights.
Do high pressure sodium lamps explode?
Disposal: The Sodium in these lamps is a highly volatile substance. When exposed to air the sodium may explode.
How can you tell if a high pressure sodium bulb is bad?
The most common problem with a high pressure sodium light is the bulb. The first course of action is to simply change the bulb. Observe the interior gas tube for any signs of discoloration. If the tube is black, the bulb is definitely burned out.
What causes a high pressure sodium light to go on and off?
A high pressure sodium lamp cycling on and off usually indicates the lamp has reached the end of its normal life.
How long does it take for a high pressure sodium light to come on?
They reach maximum brightness near instantaneously. Low and High Pressure Sodium lights require a warm-up time that varies depending on the light. It can take up to 10 minutes to get the LPS or HPS lamp up to its normal operating temperature.
Why are sodium lamps used as street lights?
LPS lamps have been used widely for street lighting since the 1930s because of their efficiency (measured in lumens per watt) and the ability of their yellow light to penetrate fog. …
How many lumens is 450 watts?
Energy Star Bulbs
| Watts (energy usage) | Lumens (light output) |
|---|---|
| 35 | 325 |
| 40 | 450 |
| 60 | 800 |
| 75 | 1100 |