Sierra Monitor Corporation T10008 - Manual (Page 17)

OXYGEN DEFICIENCY MONITOR PAGE 15
WEIGHT 11 Oz. (0.3 Kg)
INTERFERING GASES Ozone, chlorine and other highly
oxidizing gases will interfere to the
extent of their oxygen equivalent. Highly
corrosive atmosphere will cause
premature failure.
CASE Three-piece, molded of high impact
plastic.