METHOD TO TEST EXPLOSION-PROOFNESS OF THERMOCATALYTIC SENSORS Russian patent published in 2012 - IPC E21F9/00 

FIELD: blasting.

SUBSTANCE: method to test explosion-proofness of thermocatalytic sensors comprising active and comparative elements based on tests in an explosive chamber filled with a test explosive mixture and detection of probability of its ignition from a thermocatalytic sensor. Besides, the active element of the thermocatalytic sensor is placed into the explosive chamber filled with a representative explosive mix of most highly flammable composition, an electric circuit with parameters corresponding to the most dangerous test mode is connected to the active element, and using current flowing through the active element and its voltage drop, the value of its resistance R_est. is estimated. Then the comparative element of the thermocatalytic sensor is placed into the explosive chamber, an electric circuit is connected to it, current in the circuit is modified, and increase of the comparative element resistance is provided up to R_est, then the explosive chamber is filled with the activated test explosive mix, and the probability of ignition of the activated test explosive mix from the comparative element of the thermocatalytic sensor is determined.

EFFECT: exclusion of the test mode related to increase of the active element capacity 1,5 times due to application of the activated test explosive mixture instead of the representative one.