These indicating lamps are the
preferred choice for hazardous area indication. They offer standard indicating
lamp size, (22.5mm
hole), and a short mounting depth. Most of all, they are intrinsically safe.
This means that the connections may be accessed in a hazardous area and no bulky
EExe junction boxes are required.
Added to this, the lamp life of these LED
clusters is typically over 10 years.
They are competitive in price to EExd
equivalents even including barrier costs. Standard Type are normally
driven via a Digital Output Barrier and
the new Low-Power models can be powered by as little as 4mA and are suitable for
the low power outputs available from Remote I/O
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