Sensors should be placed near the source of the gas if possible. Sensors should not be placed near ventilation fans or openings to outside. They should be placed in areas where there is good air circulation, but not in the path of rapidly moving air.
Install your natural gas detectors in locations close to sources of natural gas. This includes, placing them in any room with windows or a gas appliance such as your kitchen and your basement. When adding to a room with windows, be sure to position natural gas detectors higher than all doors and windows.
The breathing zone refers to the area 4 - 6 ft (1.2 - 1.8m) from the floor, where most human breathing takes place. This is a good default location for sensors, as many gases often disperse well in air. Sensors should be placed near the source of the gas if possible.
A gas detector shall be located in an area where a leak is most likely to concentrate. More than one gas detector may be required depending on the machinery room configuration or airflow patterns. A gas detector shall be located in the machinery room in an area where a leak will concentrate.
It is best to install a gas detector in every room where gas-consuming appliances are installed.
To summarize, building owners must install at least one fuel gas detector in accordance with the manufacturers requirements, in every room containing an appliance fueled by propane, natural gas, or any liquefied petroleum gas.
Open path area detectors are of two types: IR and Laser Spectroscopy. The IR open path utilizes the same technology as point IR detectors. The IR open path detector spaces the distance between the IR transmitter and receiver from 15 feet to 650 feet depending on detector capabilities.
Gas detectors should be installed in the room where a gas escape is most likely to occur. Natural gas detectors should be installed above the level of a possible gas escape and near the ceiling (typically < 30 cm (12 inches) from the ceiling), in a place where air movements are not impeded by furniture and furnishings.
Natural gas detectors can alert you and your family of odorless and dangerous leaks. They may not be as common on the list of must haves for the home such as a smoke detector or fire extinguisher, but these devices are worth serious consideration and can detect potentially serious situations.
You can choose to not have the natural gas detector installed. However, the detector can provide valuable early warning of a gas leak emergency before it develops into a more serious situation, possibly involving a fire or an explosion. This could result in property damage, serious injuries, or death.
Natural gas is 30% lighter than air. If a leak occurs in an open area, natural gas will easily vent and dissipate into the atmosphere. When enclosed, natural gas will rise to the ceiling and fill the room from top to bottom.
Yes, natural gas does rise. The longer answer is that it rises because of its composition. Natural gas is primarily composed of methane, a colorless and nearly odorless gas that's lighter than air. As a result, it will gradually displace oxygenated air from the top down if enough of it is released in a confined space.
Methane gas detectors should therefore be placed near the ceiling, leaving a distance of at least 6 inches from the ceiling, while also avoiding dead air spaces, e.g. corners.
In its natural state, natural gas is odorless and colorless. To make gas leaks easier to detect, gas companies add chemicals called odorants to create a natural gas smell similar to sulphur or rotting eggs. The stronger this smell, the more likely it is that you have a gas leak.
The Combustible Gas Leak Detector Pen is extremely sensitive, with a detection range of 0 to 100% lower explosive limit. Its low alarm level is 20±5% and 50±10%, with the high alarm level being greater than 50±10%.
The disadvantages are that anode wires are delicate and can lose efficiency in gas flow detectors due to deposition, the efficiency and operation affected by ingress of oxygen into fill gas, and measurement windows easily damaged in large area detectors.
Toxic gases: Where safe breathing levels are the main concern, sensors should be located in the typical breathing zone, which is 4 to 6 feet from the floor.
Catalytic diffusion sensors are the most widely used devices for the detection of combustible gases and vapors.
Natural gas is lighter than air and rapidly dissipates into the air when it is released. When natural gas burns, a high-temperature blue flame is produced and complete combustion takes place producing only water vapor and carbon dioxide.
Gas detectors come packaged into two main form factors: portable devices and fixed gas detectors.
In these applications, the gas detection sensor should be placed 18 to 24 inches away from the potential leak source and in an area where it will not get sprayed with high pressure liquid or mist.
Accuracy: Typically listed with a plus or minus 5 percent, it is associated with a confidence interval of 95 percent. This means in 95 out of 100 results; the readings should be within plus or minus 5 percent of the actual gas concentration.