Harmful gas telemetering and monitoring system

A harmful gas telemetering and monitoring system belongs to environment-friendly equipment and is characterized by comprising a harmful gas monitoring parameter input port, a monitoring parameter processing circuit module, a monitoring parameter signal transmitting module, a field power supply module, a signal receiving circuit module, a central processing unit (CPU) module, a monitoring parameter signal displaying and recording circuit module, a monitoring parameter display, a monitoring parameter recording storage, a monitoring parameter signal output circuit, a red indicator lamp, an alarm buzzer and an auxiliary power supply module. The signal receiving circuit module receives monitoring parameter signals sent from the signal transmitting module, the red indicator lamp and the alarm buzzer are used for indicating whether harmful gas exceeds the limit or not. According to tests, characteristic quantity of the selected harmful gas is converted into current signal values by corresponding probes, the current