What is cross sensitivity in sensors?
What is cross sensitivity in sensors?
Cross sensitivity is a phenomenon that occurs when a sensor shows readings for a gas that is not the target gas. This interfering gas causes a reaction in the sensor — therefore showing a change in readings — even if the target gas is not present. An example of this would be an H₂S sensor reacting to H₂ in the area.
What does the MultiRAE detect?
RAE Systems’ MultiRAE multigas monitors give you the ability to detect and monitor up to six gases for personal protection and industrial leak detection applications. MultiRAE can test for VOCs in a range of 0-5000 ppm, combustibles, and a range of toxic threats, plus monitor sufficient oxygen levels.
What does CO mean on a gas monitor?
Carbon Monoxide Gas
Carbon Monoxide Gas Detectors (CO)
What does a CO sensor measure?
CO is a colorless, tasteless and odorless gas produced by incomplete combustion of carbon-containing materials. CO detectors are designed to measure CO levels over time and sound an alarm before dangerous levels of CO accumulate in an environment, giving people adequate warning to safely ventilate the area or evacuate.
What is cross sensitivity?
Cross sensitivity is defined as sensitivity to one substance that renders an individual sensitive to other substances of similar chemical structure.
Will a CO detector detect hydrogen?
The reason that CO sensors are potentially susceptible to hydrogen (H2) interference is the reaction that is used to detect gas. Hydrogen is actually part of the detection reaction. Some commonly used CO sensors show a relative response to hydrogen as high as 60%.
What gases does a MultiRAE detect?
In addition to its cutting-edge PID sensor for volatile organic compounds (VOCs), the MultiRAE supports over 30 electrochemical, NDIR, and catalytic sensors to detect up to five additional threats, including toxic and combustible gases, oxygen deficiency/enrichment, and carbon dioxide.
What is a MultiRAE used for?
Uses: The MultiRAE Plus is a multi-gas monitor for continuous monitoring of toxic gases, oxygen and combustible gases.
What should you do if your carbon monoxide detector goes off?
What to do if your Carbon Monoxide Detector goes off
- Turn off appliances, or other sources of combustion at once.
- Immediately get fresh air into the premises by opening doors and windows.
- Call a qualified technician and have the problem fixed before restarting appliances.
How does a CO sensor work?
How do carbon monoxide detectors work?
- Biomimetic sensor: a gel changes color when it absorbs carbon monoxide, and this color change triggers the alarm.
- Metal oxide semiconductor: when the silica chip’s circuitry detects carbon monoxide, it lowers the electrical resistance, and this change triggers the alarm.
Do CO detectors detect fire?
Combination smoke and carbon monoxide alarms have sensing technologies that work together to detect fires and the odorless, colorless, tasteless gas known as CO – the silent killer.
Why is cross sensitivity bad for a sensor?
Cross sensitivity is a sensor’s reaction to other gases which can interfere with how the sensor reacts. If this happens, the user may be exposed to the target gas and not know they are at risk, or it may reduce the level of gas seen on the instrument display as it has been reduced because of this negative effect.
