Pulse Start Metal Halides

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Advantages are as Sidd pointed out, disadvantages in my part of the country is only one of the 8 wholesale houses in this area even stock a small amount of replacement lamps and ballasts for the pulse start fixtures. seems the service call always turns into a special order thing when it involves a pulse start MH.
 
Jljohnson said:
Advantages are as Sidd pointed out, disadvantages in my part of the country is only one of the 8 wholesale houses in this area even stock a small amount of replacement lamps and ballasts for the pulse start fixtures. seems the service call always turns into a special order thing when it involves a pulse start MH.
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I wasn't aware of that, but I'm sure like you said they may not be stock everywhere, I have only serviced 2 or 3 areas that have all PS, and always had what I needed at the time. There is a cost difference, but the idea is that the PS will pay for itself in 1-2 years or somethin like that. (This is what i've been told)
 
As of 3/31/08 we will no longer be able to install probe start MH in a 150 thru 500 watt vert. lamp fixture in NY under title 19 I think they have followed california on this.I have heard that its a matter of time before replacement ballasts and lamps will no longer be avail.
 
Pete Benoit said:
As of 3/31/08 we will no longer be able to install probe start MH in a 150 thru 500 watt vert. lamp fixture in NY under title 19 I think they have followed california on this.I have heard that its a matter of time before replacement ballasts and lamps will no longer be avail.
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Wonder why that is if as others said they are efficient? I personally don't see how they are more efficient than regular MH.
 
How Does Pulse-Start Metal Halide Lighting Save Money?

Compared with probe-start lighting, pulse-start metal halide lighting saves you money in four ways:

Brighter light ? Pulse-start lamps produce more mean lumens per watt of electricity.

Lamp light output is maintained ? Because the light output of lamps declines as they age, the design of the lighting system must be based on the ?maintained? or end-of-life light output. The bigger the decline (lumen depreciation), the more excess-initial-lighting must be provided. Pulse-start metal halide lamps are about 6 percent better than probe-start lamps in maintaining light output over their service life, so fewer lamps are required.

Lamp life is long ? Some pulse-start metal halide lamps last longer than probe-start lamps. For example, 250-W pulse-start lamp can have a 15 000-hour life, compared with a 10 000-hour life for a probe-start lamp of the same wattage.

Lamp replacement is less frequent ? Replacing burned out lamps is a significant labour cost. Pulse-start lamps last longer, so they don't need replacing as often, thus lowering labour costs.
 
SiddMartin said:
How Does Pulse-Start Metal Halide Lighting Save Money?

Compared with probe-start lighting, pulse-start metal halide lighting saves you money in four ways:

Brighter light ? Pulse-start lamps produce more mean lumens per watt of electricity.

Lamp light output is maintained ? Because the light output of lamps declines as they age, the design of the lighting system must be based on the ?maintained? or end-of-life light output. The bigger the decline (lumen depreciation), the more excess-initial-lighting must be provided. Pulse-start metal halide lamps are about 6 percent better than probe-start lamps in maintaining light output over their service life, so fewer lamps are required.

Lamp life is long ? Some pulse-start metal halide lamps last longer than probe-start lamps. For example, 250-W pulse-start lamp can have a 15 000-hour life, compared with a 10 000-hour life for a probe-start lamp of the same wattage.

Lamp replacement is less frequent ? Replacing burned out lamps is a significant labour cost. Pulse-start lamps last longer, so they don't need replacing as often, thus lowering labour costs.
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Just another label trying to promote their products IMO. If they are so great then why aren't they used very much? I have only ever seen them twice.
 
I think b/c they're too expensive

Like I said, out of 15 diff. sites that I've seen only maybe 2 have pulse start.
 
It seems like my area is going through a major overhaul with regards to lighting. We have been very busy for about a year replacing fixtures in a lot of larger buildings. The POCO's are offering rebates to the customers for installing energy efficient lighting. We have been replacing a lot of MH fixtures and swapping them out for Pusle Start. We are also replacing a ton of MH and HPS with T8 or T5 fixtures. We have even replaced a lot of F32T8's with F30T8's. I guess every little bit helps.
 
mdshunk said:
Huh? Do they look like an empty sheetrock mud bucket?
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hah, they have some type of filter that does some type of filtering and they can replace these filters and the filter somehow doesn't stink. that's all I know, they just look odd because there is no visible plumbing or anything, just a urinal on the wall. Very quiet :)

-sorry to distract off the thread
 
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