Gas detector: how to choose it
If you are on this page you have probably done some research on dangers related to gas leaks and you are interested in purchasing a detector. The choice may not be easy given the numerous models on the market. Who are the most important f actors to take into consideration ? What must a good gas detector ? Below we see together the main things to take into consideration before making the purchase.
Reliability and precision
A gas detector can be a real life-saving device, capable of warning us of any danger in time to avoid the worst consequences. For this reason it is essential that the appliance is built in compliance with UNI-EN standards regarding gas safety, therefore always make sure that the manufacturer provides the appropriate certifications for the detector, such as the quality certificate IMQ .
The gas to be detected
Detectors always declare the type of gas to which they are sensitive. Usually the the most common gases in the home are methane, LPG and carbon monoxide . Of course, the choice of which to monitor depends on the gas used in your system. However, there are also detectors capable of monitoring two gases simultaneously, such as methane and CO .
Reporting and intervention
The the detector's task is to warn and signal the presence of gas , and obviously intervene to interrupt the supply. When choosing the model, make sure that in addition to the presence of the classic siren for the acoustic signal, there are also visual signals. These are important for various reasons: they allow you to raise the alarm even in cases where it is not possible to hear the siren, they signal the correct functioning of the device.
Every good gas detector should in fact have three LEDs :
- green to signal that the detector is active;
- yellow to signal any faults;
- red to signal the alarm and therefore the presence of gas.
It is therefore important that the device presents these indicators clearly and frontally.
As regards the interruption of the gas supply, it is important that the detector is able to control a solenoid valve connected to the gas system. This allows you to interrupt the leak until the cause has been identified and remedied.
Another fundamental aspect to consider when choosing a gas detector concerns the power supply. There are in fact both battery-powered detectors and detectors powered directly by 230V. This solution offers several advantages in terms of reliability and security . First of all, by eliminating the dependence on batteries, the risk of malfunctions due to their exhaustion is avoided, guaranteeing constant and uninterrupted monitoring. Furthermore, choosing a 230V powered detector simplifies maintenance, eliminating the need to periodically replace batteries.
Sensitivity to gas
The sensor is the most important part of a gas detector, as from sensor quality also depends on the device's ability to warn us in case of danger. I better detectors usually have an intervention threshold set at 10% of the L.I.E. (lower explosive limit). We will soon dedicate a post to in-depth analysis of the concentration measurement of a gas and the L.I.E. threshold.
Self-diagnosis
An aspect that should not be underestimated when choosing a detector is presence of a self-diagnostic system .
How can we be sure that the sensor and the device are working correctly?
In this sense, self-diagnosis by the device is a factor of guarantee and a plus in terms of security .
What we have listed are undoubtedly the most important aspects when choosing a detector, because they directly concern its effectiveness and reliability. Of course, if you need advice or have doubts or questions relating to this topic potete contattarci, we will be happy to help you!