Exhibition Label Text: Auto Firedamp detector and alarm, 1964-1980s.
With the increased use of electrical power at the coalface it became
necessary to introduce permanent methods of detecting firedamp because of
the increased risk of explosions.
The red lamp on this alarm flashed every 15 seconds under normal conditions
to show it was working. The light would flash every second and an alarm would
sound when dangerous levels of firedamp gas were detected..
Grey painted metal square shaped canister leading to a cylinder of metal with a red stripe then glass. With a silver coloured metal vented cap and a hook shaped carrying handle. Through the glass can be seen a blue stripe and a black & white gauge. 29.8 x 6.4 cm square.
Digital image on Keeper’s computer – S:/Keeper/MyPictures/Exhibitions/DisplayNewVisitorCentre. Taken Nov. 2003.
8/3/99 Possibly part of E00159. See supplementary info. file JS