Soda lime half life indicator

Details Soda lime half life indicator Soda lime half life indicator

G - Physics

01

N

73/73, 137/1.52

G01N 25/48 (2006.01) B01D 53/14 (2006.01)

Patent

CA 1141990

Abstract of the Disclosure The invention disclosed is an indicator for monitoring the capacity of a CO2 absorbent to absorb CO2. The indicator is typically used in asso- ciation with a closed circuit breathing apparatus, including a container for a CO2 absorbent. The indicator comprises temperature sensing means immersed in the absorbent, a temperature to voltage converter for converting a sensed temperature reading to an electrical voltage signal, temperature trend proces- sing means for processing said electrical voltage signal into a selected electrical output signal characteristic of a temperature trend; and display means for converting said selected electrical output signal to a predetermined visual display indicative of the capacity of the CO2 absorbent to absorb CO2.

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