Fixed combustible gas alarm is a device installed in a fixed position to detect the concentration of combustible gas in the environment and trigger an alarm when a set threshold is exceeded to remind people to take corresponding measures. It is usually used in places where long-term monitoring of combustible gas concentration is required.
Working principle
Fixed combustible gas alarms typically use semiconductor sensors, infrared sensors, or electrochemical sensors to detect the concentration of combustible gas. The sensor chemically reacts with the combustible gas, absorbs light, or changes the electrical signal, generating an electrical signal. The sensor measures and analyzes the strength of this electrical signal and determines the concentration of combustible gas in the environment based on the measurement results. Once the concentration of combustible gas exceeds a set threshold, the alarm device will issue an alarm signal such as sound, light, or vibration.
Application field
Fixed combustible gas alarms are widely used in the following fields:
Industrial plants and workshops are used to monitor the concentration of combustible gases in chemical plants, manufacturing plants, oil fields, mines, and other environments to ensure the safety of workers and the normal operation of production equipment.
Storage tanks and pipeline systems: used to monitor the leakage of combustible gases in oil, natural gas, liquefied gas, and other storage tanks and pipeline systems to prevent fires and explosions.
Auto repair shops and gas stations: used to monitor the concentration of combustible gases in auto repair shops, gas stations, and other places to ensure the safety of the working environment and the safety of car refueling.
Laboratories and research institutions: used to monitor the concentration of combustible gases in laboratories, research institutions, and scientific research sites to ensure the safety of laboratory personnel and the environment.
Environmental monitoring: used in environmental monitoring stations, wastewater treatment plants, landfills, and other places to monitor the discharge and leakage of combustible gases.
General technical parameters
The following are examples of some technical parameters in a sulfur fluoride gas alarm:
| Technical parameters | describe |
|---|---|
| Detection range | Minimum and maximum detection ranges for SF6 gas concentrations in indoor air |
| resolution | The number of decimal places in the measurement result |
| response time | Time from when the SF6 concentration exceeds the threshold to when the alarm is triggered |
| sensitivity | Sensitivity to changes in SF6 concentration |
| Operating temperature range | The temperature range in which the device can operate normally |
