Features of Gas Leakage Detection Systems

The complexity of the Gas Leak Detector System depends on the purpose of the application for which this data will be applied. Recording data facilitates the identification of the problem and the introduction of appropriate security measures. If the system is planned only as an alarm, then the system outputs can be simple, and no data storage is required. Therefore, when choosing a system, it is very important to know how information will be used so that it can be decided in favor of suitable system components.

Let’s consider the basic systems of a combustible gas leak detector:

Multipoint Systems

In the field of toxic gas monitoring, the use of multipoint systems has instantly demonstrated its potential in addressing a number of problems associated gas leaks and with the exposure of combustible gases to the workplace. It is of great value both for identifying problems, and for protecting employees and management from exposure to harmful concentrations of toxic constituents in the workplace like carbon monoxide, propane butane, etc. When designing multipoint systems, serious attention should be given to the various components and their interrelationships. If catalytic detection sensors are used, for example, the electrical cable connections will have three cores, each with a cross-section of 1 mm2, which will not only produce an output signal, but also power for the circuit with a measuring bridge that is located on the sensor to reduce the signal voltage drop in the cables. In toxic (and some flammable) gas monitoring systems, sampling is often carried out at some distance from the module, and gases are fed to the sensors through plastic tubes with a narrow aperture. Particular attention in the development of such systems is given to the selection of suitable sizes of pumps and tubes, a unit for sequential sampling (of all tubes in turn), and filters for trapping solid particles or water in a gas stream. The size of the tube opening can be critical, since it must, on the one hand, be long enough to provide a high-speed pump of standard size, and, on the other hand, should not be very long in order to avoid excessive dilution with air. Each sampling point must be connected to a separate tube, and if several points are connected to a single central sensor, there is a need to clean the sensor with clean air in between individual sampling points.

Stationary Systems – Gas Leak Detector

The control gas leak detector devices used in stationary systems can be located centrally or in different places, depending on the main operational characteristics. They are installed on the panel and in any single channel (that is, one control card per sensor) or in multi-channel configurations, the latter are very useful where there is a need to take into account power, space or cost limitations.