Gas monitoring device, system and methods

1. A method of monitoring at least one gas by way of a gas monitoring system for continuously detecting leakage of at least one gas and being operable in an extreme climate condition, the method comprising: providing a gas monitoring system, the system providing comprising: providing a processor; providing at least one emergency shutdown valve responsive to a set of instructions from the processor; and providing a user interface in communication with the processor; commencing operation by powering the gas monitoring system; sensing a gas level by way of at least one direct-connect sensor; determining the gas level using data obtained by the at least one direct-connect sensor; determining whether the gas level is less than a threshold value; if the gas level is less than the threshold value, sensing a gas level by way of at least one direct-connect sensor; if the gas level is at least the threshold value, proceeding to performing a limit test, and performing the limit test; if the gas level is less than the limit, determining the gas level using data obtained by the at least one direct-connect sensor; if the gas level is equal to the limit, sending a warning by way of a first alarm feature; if the gas level exceeds the limit, sending a warning and activating an alarm by way of a second alarm feature; and if the gas level exceeds the limit by a predetermined value, sending a warning, activating an alarm, and activating an ESD latch valve by way of a third alarm feature, and terminating operation of the gas monitoring system.

2. The method of claim 1 , wherein the gas monitoring system comprises a plurality of detector relays.