Metal halide and high pressure sodium lamps difference

Metal halide and high pressure sodium lamps difference
HPS lamps are mostly used in street lights

Difference Between Metal Halide (MH) and High Pressure Sodium(HPS) lamp? 

Both metal halide and high pressure sodium lamps are some kind of the high intensity discharge lamps family.

Visual difference between metal halide and high pressure sodium

  • MH light is white while the light of a high pressure sodium lamp is amber orange, this is the visual difference
  • Not only the The visual difference but also their operation is different and require different ballasts type

Metal halide benefits

AC electrical current passes through mercury and MH gas mixture to make a white light

Metal halide best use

  1. MH lights are best for high output applications such as stadiums, construction sites, large working areas like power generation plants and parking lots.
  2. These MH lights have the longest warm up period compared to other lights, So it takes much time to give its full lighting.

High pressure sodium benefits

1- High pressure sodium lamps have lifespan up to 22,000 hours.

2- They are cheaper to replace than the metal halide (MH) ones

3- Mercury is danger, when using high pressure sodium (HPS) lights no risk of coming into contact with mercury, infrared, or  UV lights that can cause harm to people

High pressure sodium lamps best uses

  • The light emitted out of high pressure sodium lamps is limited to a warm deep yellow light, this is due to the low color spectrum
  • HPS lamps are mostly used in street lights
  • Like MH lamps, HPS lamps have a long warm up time in order to produce the highest light. 
HPS lamps are mostly used in street lights
HPS lamps are mostly used in street lights