Advantages and Disadvantages of Catalytic Combustion and Semiconductor Gas Sensors <br> Catalytic Combustion Sensors are high temperature resistant catalyst layers prepared on the surface of platinum resistance. At a certain temperature, the surface of the flammable gas is catalytically combusted. The combustion is the temperature rise of the platinum resistance, and the resistance changes. The change value is a function of the flammable gas concentration.
Catalytic combustion gas sensors selectively detect flammable gases: they can be burned and can be detected; if they are not combustible, the sensor does not respond. Of course, there are many exceptions to the phrase "everything can be burned and can be detected." In general, the above selectivity is established.
Catalytic combustion gas sensors are accurate in measurement, fast in response, and long in life. The sensor output is directly related to the environmental explosion hazard. The safety detection field is a class of dominant sensors. Disadvantages: no selectivity in the range of flammable gases. Working in a dark fire, there is a danger of ignition. Most of the elemental organic vapors are toxic to the sensor.
At present, the main suppliers of such sensors are China, Japan, and the United Kingdom (inventor countries)! At present, China is the largest user of this kind of sensor, and also has the best sensor production technology, although there are constantly a variety of agents to publicize the interference of the society on this sensor, after all, the mainstream manufacturer of catalytic combustion gas sensors.
Shenzhen Industrial Mining Network Catalytic Combustion Gas Sensor Product Recommendation :
Japanese figaro catalytic combustion combustible gas sensor - TGS6812
product description
First, the catalytic combustion type combustible gas sensor TGS6812 description:
TGS6812-D00 is a catalytic combustion gas sensor that can detect hydrogen at 100% LEL. This sensor has high precision, durability and stability, fast response and linear output. It can not only monitor hydrogen, but also can be used for Methane and LP gas are detected. This is an excellent solution for leak detection when a stationary fuel cell uses hydrogen as a combustible gas. The TGS6812-D00 has an adsorbent in the cap and has a low cross sensitivity to organic vapor. In addition, this sensor is more resistant to silicon compounds and more adaptable to harsh environments.
Second, the catalytic combustion type combustible gas sensor TGS6812 features:
* Linear output
* long lasting
* Low sensitivity to alcohol
* High sensitivity to substances such as hydrogen, methane and LP
Third, catalytic combustion type combustible gas sensor TGS6812 application:
* Hydrogen and combustible gas leaks for monitoring fuel cells
Fourth, catalytic combustion type combustible gas sensor TGS6812 sensitivity characteristics:
The representative sensitivity curves are measured under standard test conditions (see back) as shown in the figure below.
The ordinate indicates the sensor's output sensitivity - ΔVout (mV):
ΔVout=Vout (in gas) - Vout (in air)
The semiconductor gas sensor is manufactured by using some metal oxide semiconductor materials to change the conductivity of the ambient gas at a certain temperature. For example, the alcohol sensor is prepared by using the principle that the resistance of the tin dioxide is drastically reduced when the alcohol gas is encountered at a high temperature.
Semiconductor gas sensors can be effectively used for many gas detections such as methane, ethane, propane, butane, alcohol, formaldehyde, carbon monoxide, carbon dioxide, ethylene, acetylene, vinyl chloride, styrene, and acrylic acid. In particular, such sensors are inexpensive and suitable for civil gas detection needs. The following semiconductor gas sensors are successful: methane (natural gas, biogas), alcohol, carbon monoxide (city gas), hydrogen sulfide, ammonia (including amines, terpenoids). High quality sensors are available for industrial inspection needs.
Disadvantages: poor stability and large environmental impact; in particular, each sensor has unique selectivity, output parameters can be determined, and should not be used in places where measurement accuracy is required.
Shenzhen Gongcai network semiconductor gas sensor product recommendation:
Japanese figaro gas combustible gas sensor - TGS2611
First, the flammable gas sensor TGS2611 description:
TGS2611 is highly sensitive to methane gas and is an ideal sensor for household gas leak alarms due to its low sensitivity to volatile alcohols (interference gases commonly found in residential environments). Due to the small volume of sensitive elements, TGS2611
The heater current is only 56 mA, and the sensor's inspection unit is housed in a standard TO-5 metal package.
TGS2611-C00 is not only small in size, but also very responsive. It is the best choice for gas leak detectors. The TGS2611-E00 is equipped with a filter cover that eliminates the influence of interfering gases such as alcohol, and has a highly sensitive selectivity to methane gas. It is especially suitable for appliances that are tested for complex and demanding home environments. It is the ideal sensor for household gas leak detectors.
Second, the characteristics of combustible gas sensor TGS2611:
* Low power consumption
* High sensitivity to methane gas
* Long service life and low cost
* Simple application circuit
Third, the flammable gas sensor TGS2611 application:
* Household gas leak alarm
* Portable gas detector
* Leak detection of gas facilities
Fourth, the flammable gas sensor TGS2611 sensitivity characteristics:
The representative sensitivity curves are measured under standard test conditions (see back) as shown in the figure below.
The ordinate indicates the sensor resistance ratio Rs/Ro, and Rs and Ro are defined as follows:
Rs = resistance of the sensor in various concentrations of gas
Ro = resistance of the sensor in 5000ppm methane
Catalytic combustion gas sensors selectively detect flammable gases: they can be burned and can be detected; if they are not combustible, the sensor does not respond. Of course, there are many exceptions to the phrase "everything can be burned and can be detected." In general, the above selectivity is established.
Catalytic combustion gas sensors are accurate in measurement, fast in response, and long in life. The sensor output is directly related to the environmental explosion hazard. The safety detection field is a class of dominant sensors. Disadvantages: no selectivity in the range of flammable gases. Working in a dark fire, there is a danger of ignition. Most of the elemental organic vapors are toxic to the sensor.
At present, the main suppliers of such sensors are China, Japan, and the United Kingdom (inventor countries)! At present, China is the largest user of this kind of sensor, and also has the best sensor production technology, although there are constantly a variety of agents to publicize the interference of the society on this sensor, after all, the mainstream manufacturer of catalytic combustion gas sensors.
Shenzhen Industrial Mining Network Catalytic Combustion Gas Sensor Product Recommendation :
Japanese figaro catalytic combustion combustible gas sensor - TGS6812
product description
First, the catalytic combustion type combustible gas sensor TGS6812 description:
TGS6812-D00 is a catalytic combustion gas sensor that can detect hydrogen at 100% LEL. This sensor has high precision, durability and stability, fast response and linear output. It can not only monitor hydrogen, but also can be used for Methane and LP gas are detected. This is an excellent solution for leak detection when a stationary fuel cell uses hydrogen as a combustible gas. The TGS6812-D00 has an adsorbent in the cap and has a low cross sensitivity to organic vapor. In addition, this sensor is more resistant to silicon compounds and more adaptable to harsh environments.
Second, the catalytic combustion type combustible gas sensor TGS6812 features:
* Linear output
* long lasting
* Low sensitivity to alcohol
* High sensitivity to substances such as hydrogen, methane and LP
Third, catalytic combustion type combustible gas sensor TGS6812 application:
* Hydrogen and combustible gas leaks for monitoring fuel cells
Fourth, catalytic combustion type combustible gas sensor TGS6812 sensitivity characteristics:
The representative sensitivity curves are measured under standard test conditions (see back) as shown in the figure below.
The ordinate indicates the sensor's output sensitivity - ΔVout (mV):
ΔVout=Vout (in gas) - Vout (in air)
The semiconductor gas sensor is manufactured by using some metal oxide semiconductor materials to change the conductivity of the ambient gas at a certain temperature. For example, the alcohol sensor is prepared by using the principle that the resistance of the tin dioxide is drastically reduced when the alcohol gas is encountered at a high temperature.
Semiconductor gas sensors can be effectively used for many gas detections such as methane, ethane, propane, butane, alcohol, formaldehyde, carbon monoxide, carbon dioxide, ethylene, acetylene, vinyl chloride, styrene, and acrylic acid. In particular, such sensors are inexpensive and suitable for civil gas detection needs. The following semiconductor gas sensors are successful: methane (natural gas, biogas), alcohol, carbon monoxide (city gas), hydrogen sulfide, ammonia (including amines, terpenoids). High quality sensors are available for industrial inspection needs.
Disadvantages: poor stability and large environmental impact; in particular, each sensor has unique selectivity, output parameters can be determined, and should not be used in places where measurement accuracy is required.
Shenzhen Gongcai network semiconductor gas sensor product recommendation:
Japanese figaro gas combustible gas sensor - TGS2611
First, the flammable gas sensor TGS2611 description:
TGS2611 is highly sensitive to methane gas and is an ideal sensor for household gas leak alarms due to its low sensitivity to volatile alcohols (interference gases commonly found in residential environments). Due to the small volume of sensitive elements, TGS2611
The heater current is only 56 mA, and the sensor's inspection unit is housed in a standard TO-5 metal package.
TGS2611-C00 is not only small in size, but also very responsive. It is the best choice for gas leak detectors. The TGS2611-E00 is equipped with a filter cover that eliminates the influence of interfering gases such as alcohol, and has a highly sensitive selectivity to methane gas. It is especially suitable for appliances that are tested for complex and demanding home environments. It is the ideal sensor for household gas leak detectors.
Second, the characteristics of combustible gas sensor TGS2611:
* Low power consumption
* High sensitivity to methane gas
* Long service life and low cost
* Simple application circuit
Third, the flammable gas sensor TGS2611 application:
* Household gas leak alarm
* Portable gas detector
* Leak detection of gas facilities
Fourth, the flammable gas sensor TGS2611 sensitivity characteristics:
The representative sensitivity curves are measured under standard test conditions (see back) as shown in the figure below.
The ordinate indicates the sensor resistance ratio Rs/Ro, and Rs and Ro are defined as follows:
Rs = resistance of the sensor in various concentrations of gas
Ro = resistance of the sensor in 5000ppm methane
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