Gassing sensor: description, types, cost

Any room in which gas equipment is used must be checked for a level of concentration in the air of the products of gas combustion. To measure this parameter and to ensure safe conditions in the home and in industry, a special device is used - the gassing sensor. What kind of device it is, what functions it performs, is disclosed in the article.

What is a gassing sensor

This is a high-precision measuring device intended for continuous automatic control over the amount of dangerous gases contained in the air. Gas alarms are used in industrial, domestic and communal areas.

Gas sensors are produced as a separate device, which can be placed autonomously in a suitable location. Also there are alarms, which are included in the kit for the shut-off valve.

The device is equipped with an analyzer capable of responding to changes in the concentration of certain gases. To measure the amount of gas in the medium, different sensors are used. They react instantly to an increase in the concentration of gases emanating from gas appliances. At a high level of gas contamination, the sensor delivers a light and sound signal about the danger.

Modern sensor models are equipped with a liquid crystal display, which displays the measured values. The built-in memory allows you to record the received data and store all the measurement results.

Also, the display shows information about the health of the device and the existing problems. This function allows you to change the worn out items in a timely manner.

Types of gas alarms

The gassing control sensors are divided into two main types: household and industrial. Household alarms provide a number of reactions to exceed the specified gas concentration parameter. The main tasks of the industrial sensor are the measurement and display of gas content in the display. Industrial devices are used to solve more stringent tasks and are often used together with the control panel, to which the signal is supplied from the gas sensors.

According to the type of gas being measured, signaling devices are distinguished:

1. Methane.
2. Propane.
3. To measure the concentration of carbon monoxide or carbon monoxide.
4. Combined multicomponent.

By the method of installation, gas sensors are:

1. Stationary - work only from the power grid and are located near the power supply.
2. Portable - powered by built-in battery.

Functional capabilities of gas sensors

The gassing sensor is a multifunctional device and has the following capabilities:

1. Sound and light warning. If the device has reacted to gas contamination, the indicator lights up and a loud beep sounds.
2. The possibility of connecting the gas shut-off valve.
3. Presence of a relay output for connection of additional electric devices: a separate annunciator, a fan, a mechanism for a fireman or a dispatching console.
4. Built-in autonomous power supplies.

Features of the installation

The installation of the gassing sensor depends on the type of device and is carried out under certain rules. Installation of the domestic alarm can be carried out independently, following the manufacturer's instructions. Each model of the sensor is accompanied by a passport with a device installation diagram.

When choosing the location for the device, it is better to ask the representatives of the gas service for help. They know the normative documents and can choose the right place.

Typically, gas detectors are placed on a wall near appliances that operate on gas (near a column, gas stove, boiler and counter). The distance between the sensor and the gas appliance should not exceed 4 meters.

How to avoid installing a gas sensor:

1. At a distance of less than 1 meter from ovens and gas burners.
2. In places of high dust.
3. Close to windows or ventilation ducts.
4. Near the storage of gasoline, paints, solvents.
5. Near uninsulated chimneys.

Industrial signalers are installed by gas specialists on special technology.

Gas alarm for boiler room

Boilers and other heat devices operate on liquid, gaseous and solid fuels, during combustion of which excess methane and carbon monoxide may appear in production facilities. This threatens to poison personnel and the emergence of an explosive situation. The gassing sensors in the boiler house allow to determine in a timely manner a high concentration of gases and prevent emergencies. All boiler rooms must be equipped with gas control alarms with the following requirements:

• The sensor must work continuously;
• The sensitivity of the device must be selective;
• Presence in the device of the program of switching on / off emergency ventilation while the concentration of methane and carbon monoxide does not reach the normal value;
• Signaling from several devices must be connected to a common panel;
• Availability of the GOST certificate of conformity;
• The device must have a safe design and have the longest possible service life.

Cost of gas sensor

In each specialized store you can buy a gassing sensor. The price of this device depends on the brand and functionality. So, household signaling device for propane or methane produced by Promgazenergo costs almost 1,5 thousand rubles. The automatic gassing sensor from PKF "Energosistemy" costs about 6 thousand rubles. It can be used in domestic and industrial premises. The price for imported models can exceed 10 thousand rubles.