First, the installation of the detector in the gas alarm
When installing the detector, firstly, it is necessary to find out the possible leak points of the combustible gas in the monitoring area, and analyze the factors such as leakage pressure, leakage amount and direction. It is also necessary to clarify the type of gas to be applied and compare the density of the leaking gas with the density of the air. Because natural gas and coal-based gas are lighter than air, they will float upward after leakage. On the contrary, liquefied petroleum gas is heavier than air, and will sink after leakage. The height of the detector installation is selected according to these factors. Secondly, it depends on the size and space of the monitoring area. The height and other factors determine the number of detectors installed to ensure that each location is covered when the flammable gas leaks, preventing the monitoring blind zone.
The combustible gas alarm should detect the combustible gas, and the communication between the detector and the detection environment is inevitable. Therefore, dust and water vapor in the environment can not be avoided. In order to avoid the entry of dust and water vapor, the detector controller is damaged. After installation, be sure to install a breathable shield.
Second, the installation of the controller in the gas alarm
When installing the alarm controller, first check whether there is a strong electromagnetic field around, if there is, it can not be installed. Secondly, when the flammable gas leaks, the alarm controller will sound and light alarm. It should be installed in the installation to facilitate the responsible personnel to see. And where it is heard, or installed in a place where there is a person on duty, so that it can be discovered in time when a flammable gas leak occurs, and notify the relevant personnel to handle it. Also, the alarm controller needs regular maintenance, so it should be installed during installation. The height that is convenient for responsible personnel maintenance should generally be (160-170) cm.
The main rod of the log-periodic antenna is two parallel thin-walled square metal tubes, which are fixedly connected by splint and installed on the bracket through horseshoe bolts. The bracket is fixed on the strut, and the steel Cable is connected to the sliding sleeve on the strut. The strut is inserted into the user support rod. The antenna vibrators are paired in pairs and fastened on the outside of the two main rods by the clamping frame. The high-frequency coaxial cable passes through the main rod. There is a sealing plug at the joint to seal and inner, and the outer conductor Connector connects the cable shielding wire and core wire with the main rod wall. The antenna can be adjusted freely in three-dimensional space. Compared with similar antennas, the length is shortened by nearly half. It is easy to set up, install, adjust, transport and low cost.
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