The mine air temperature indicator ITRV-1 is designed to monitor the development of coal spontaneous combustion in the mined-out space of existing and abandoned mine sections, in domes and above mining excavation roof support, in pillars and concentrated accumulations of shattered coal based on the temperature dynamics.
The indicator consists of the body, cover and panel with a microammeter, variable resistor, buttons and terminals on it.
Inside the ITRV-1, there is a power supply source and resistors. The ITRV-1 is supplied with 30 temperature detectors.