Is fog produced by your systems toxic?
Not at all. It is well within the health & safety guidelines
specified for exposure limits. There is no need to wear masks or breathing
apparatus unless very dense smoke inhalation is considerable over long
periods of time.
What type of generator would you suggest for my application?
Every application for fog is different. Please contact
us and we'll be happy to advise you on the most suitable
type of fog generator for your needs.
Will your fog machines set off smoke detectors?
Yes! But not heat detectors -- so check which type of alarm
your building uses.
Can I hire one of your fog systems?
Yes - we hire out all of our fog models. Please contact us
for further information.
Do your fog systems leave a residue?
No - the smaller the particle size of the fog, the lower
its settling velocity (the rate at which a particle will fall, due to
gravity). A fog particle of unit density, 0.2 micron in diameter, will
fall at 8mm per hour, compared to a 2 micron particle, which falls at
468mm per hour. In essence this means that the smaller the particle
of fog you produce, the less chance there is that deposition of fog
particles will occur.
Why is particle size so important?
Most fog systems available today are derivates of machines
used in the entertainment industry, where fog concentrations are generally
not required to be very high (i.e. the fog is not very dense). In entertainment
terms the fog is generally used to enhance the lighting effects.
Generally, bigger fog particles will settle in still air
more quickly than smaller ones. A typical 0.2 micron diameter particle
will settle at around 8mm/hr, compared to 468mm/hr for an industry typical
2 micron diameter particle.
In terms of chemical usage, one also uses dramatically less
chemical to achieve the same fog concentration / visibility using
smaller particles than larger ones, with corresponding benefits in terms
of running costs and relative safety.
How is the fog produced?
Inside our fog machines the fog chemical is heated above
its boiling point and turned into vapour. When that vapour exits the
heat exchanger and hits the colder atmospheric air, it expands and cools
rapidly, condensing to produce the aerosol particle.
What is Artificial Smoke?
The sort of "fog effect" produced by our generators
is actually a fog or aerosol, comprising of millions of tiny liquid
spheres. The refraction and diffraction of light through these particles
creates a "fog effect".
How do you produce such a small particle size?
The vast majority of conventional fog systems use cast
alloy or aluminium platen style heat exchanger technology. These are
effective, but generally produce a particle size in the range 1 - 5
micron. This type of heat exchanger has a low production cost.
Our own mains powered fog systems use heat exchanger blocks
with much greater density, machined to tolerances as low as 0.001"
/ 0.025mm. Our heat exchangers are guaranteed for "Life".
The exceptionally tight tolerances that we machine to ensure a consistent
particle size time after time, an order of magnitude smaller than most
How safe is fog?
We have a comprehensive technical library, including independent
reports analytical laboratories, research organisations and authorities
(such as the Health and Safety Executive) to demonstrate that the fogs
produced by our systems represent the safest in their class. If you
have a specific query relating to the suitability of artificial fog
for your application, please give our technical department a call.
Is fog effective outdoors?
Oil based fogs, such as the Phantom Turbo are dramatically
more effective in external applications than water based systems. However,
it is very dependent on environmental conditions. If the wind speed
is high, the fog effect is quickly blown away however persistent it
may normally be in an enclosed volume. In these conditions, if a trail
of fog is required, water based fog is particularly unsuitable, as it
evaporates rapidly. Oil based fog from the Phantom system will leave
a highly visible trail in all but the worst conditions.