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SP series Gas Sensors and Detectors

The SB series achieves a dramatic reduction of power consumption in semiconductor gas sensor applications. The average power consumption of 120mW is required to detect methane, propane or other gases. Using this design, increased sensitivity and improved cross sensitivity allow gas detection with a quick response to be achieved.

We design and manufacture gas sensor equipment in the SB range to detect Methane, Propane/Butane, Carbon Monoxide, Hydrogen, Refrigerants, Alcohol, Indoor Air Quality, Organic Solvents and Carbon Monoxide- Methane.

On this page you’ll find specifications for these FIS SB gas sensors:

  • SB-12A for METHANE DETECTION
  • SB-30 for ALCOHOL DETECTION
  • SB-15 for LP-GAS (PROPANE/BUTANE) DETECTION
  • SB-42A for REFRIGERANT DETECTION(R134a,R-410a,R-407c)
  • SB-AQ1 for AIR QUALITY CONTROLS (VOCs)
  • SB-500-12 for CARBON MONOXIDE DETECTION
  • SB-11A for HYDROCARBON DETECTION
  • SB-AQ1 for AIR QUALITY CONTROLS (VOCs)

 

SB series structure and characteristics:

  • Gas sensitive semiconductor material is a mini bead type and a heater coil and electrode wire are embedded in the element. The sensing element is installed in the metal housing which uses double stainless steel mesh (100 mesh) in the path of gas flow.
  • Sensitivity characteristics of the FIS SB gas sensors are expressed by the relationship between the sensor resistance and gas concentration. The sensor resistance decreases with an increase of gas concentration based on a logarithmic function.
  • The change of the sensor resistance (RS) is obtained as the change of the output voltage across the fixed or variable resistor (RL).
  • In order to obtain the best performance and specified characteristics, the values of the heater voltage (VH) circuit voltage (VC) and load resistance (RL) must be within the range of values given in the standard operating conditions shown in the Specification table within the data sheet

 

FIS GAS SENSOR SB-12A for METHANE DETECTION

The SB-12A is a tin dioxide semiconductor gas sensor which has an excellent performance in methane detection with significant low power consumption concept (120 mW). High sensitivity, low sensitivity to noise gases, quick response speed and strong poisoning resistance features achieve reliable gas detection system applications.

Structure

This sensor unit is placed in an external housing which contains active charcoal filter (Fig 1 in the PDF).

Operating conditions

Fig 2 in the downloadable PDF shows the standard operating circuit for this model.

Sensitivity characteristics

Fig 3 shows the sensitivity characteristics curves of the SB12A (typical data). The sensitivity characteristics of the SB-12A is specified by the following parameters.

• Sensor resistance at methane 3000 ppm
• Sensor resistance change ratio: between methane 1000 ppm and 3000 ppm (slope)
• Sensor resistance change ratio: between methane 3000 ppm and ethanol 1000 ppm.

For more information about our Methane gas sensor, download the Methane SB12A Data Sheet.

 

FIS GAS SENSOR SB-30 for ALCOHOL DETECTION

The SB-30 is a tin dioxide semiconductor gas sensor which has a high sensitivity to alcohol with quick response speed. This model is suitable for alcohol detection such as portable breath alcohol checker or ignition locking system in automobles.

Structure

The mesh is an anti-explosion feature (Fig 1 in the PDF).

Operating conditions

Fig 2 in the downloadable PDF shows the standard operating circuit for this model.

Sensitivity characteristics

Fig 3 shows the sensitivity characteristics curves of the SB-30 (typical data). The sensitivity characteristics of the SB-30 is specified by the following parameters.

• Sensor resistance level: at ethanol 300 ppm
• Sensor resistance change ratio: between ethanol 50 ppm and 300 ppm

For a full specification on this gas sensor download our Organic Solvent SB30 Data Sheet

 

FIS GAS SENSOR SB-15 for LP-GAS (PROPANE/BUTANE) DETECTION

The SB-15 is a tin dioxide semiconductor gas sensor which has an excellent performance in propane/butane detection. The features are: high sensitivity, low sensitivity to noise gases, quick response speed, strong poisoning resistance and significant low power consumption design (120 mW).

Structure

The mesh is an anti-explosion feature (Fig 1 in the PDF).

Operating conditions

Fig 2 in the downloadable PDF shows the standard operating circuit for this model.

Sensitivity characteristics

Fig 3 in the PDF shows the sensitivity characteristics curves of the SB-15 (typical data). The sensitivity characteristics of the SB-15 is specified by the following parameters.

• Sensor resistance level: at iso-butane 1000 ppm
• Sensor resistance change ratio: between iso-butane 1000 ppm and 3000 ppm

For a full specification on this gas sensor download our Propane SB15 DataSheet

 

FIS GAS SENSOR SB-42A for REFRIGERANT DETECTION(R134a,R-410a,R-407c)

The SB-42A is a tin dioxide semiconductor gas sensor which has a high sensitivity to HFCs (e.g. Freon: R-134a) with improved cross sensitivity to other gases. This model is suitable for R-134a, R 410a, R407c and other new freon family which contains R-134a. A significant feature of low power consumption design (120 mW) is advantageous for portable devices.

Structure

The mesh is an anti-explosion feature (Fig 1 in the PDF).

Operating conditions

Fig 2 in the downloadable PDF shows the standard operating circuit for this model.

Sensitivity characteristics

Fig 3 in the PDF shows the sensitivity characteristics curves of the SB-42A (typical data). The sensitivity characteristics of the SB-42A is specified by the following parameters.

• Sensor resistance level: at 100 ppm of R-134a
• Sensor resistance change ratio: between R-134a 100 ppm and 300 ppm

For a full specification on this gas sensor download our Refrigerant SB42A DataSheet

 

FIS GAS SENSOR SB-AQ1 for AIR QUALITY CONTROLS (VOCs)

The SB-AQ1 is a tin dioxide semiconductor gas sensor which has a very high sensitivity to VOCs, solvents and many other gases. This model is suitable for air quality monitoring for general applications.

Structure

The sensing element is installed in the metal housing which has 5 holes in the path of gas flow (Fig 1 in the PDF).

Operating conditions

Fig 2 in the downloadable PDF shows the standard operating circuit for this model.

Sensitivity characteristics

Fig 3 in the PDF shows the sensitivity characteristics curves of the SBAQ1 (typical data). The sensitivity characteristics of the SB-AQ1 is specified by the following parameters.

• Sensor resistance level: in air
• Sensor resistance change ratio: between hydrogen 10ppm and in air

For a full specification on this gas sensor download our Indoor Air Quality SB AQ1DataSheet

 

FIS GAS SENSOR SB-500-12 for CARBON MONOXIDE DETECTION

The SB-500-12 is a tin dioxide semiconductor gas sensor which has an excellent performance in CO detection. Using a mini-bead type sensing element with a periodic temperature change operation method, high sensitivity, selectively, small effect from humidity and other remarkable characteristics have been achieved. The SB-500-12 realizes the development of reliable CO detection devices.

Structure

This sensor unit is placed in an external housing which contains active charcoal filter (Fig 1 in the PDF).

Operating conditions

When the sensor is operated with high/ low periodic operation (Fig 2 in the PDF), sensor signal changes according to the temperature dependency characteristics. By detecting the sensor signal at sufficient timings, selective detection of CO has been achieved. Fig 3 shows the standard operation circuit and Fig 4 shows the sensitivity characteristics of the SB-500-12

For a full specification on this gas sensor download our Carbon Monoxide SB500 DataSheet

 

FIS GAS SENSOR SB-11A for HYDROCARBON DETECTION

The SB-11A is a tin dioxide semiconductor gas sensor which has an excellent performance in methane, propane, butane and other hydrocarbons detection with significant low power consumption concept (120 mW). High sensitivity, low sensitivity to noise gases, quick response speed and strong poisoning resistance features achieve reliable gas detection system applications.

Structure

The mesh is an anti-explosion feature (Fig 1 in the PDF).

Operating conditions

Fig 2 in the downloadable PDF shows the standard operating circuit for this model.

Sensitivity characteristics

Fig 3 shows the sensitivity characteristics curves of the SB11A (typical data). The sensitivity characteristics of the SB-11A is specified by the following parameters.

• Sensor resistance at methane 3000 ppm
• Sensor resistance change ratio: between methane 1000 ppm and 3000 ppm (slope) and between in air and at methane 3000 ppm.

For a full specification on this gas sensor download our Hydrocarbons SB11A DataSheet

 

FIS GAS SENSOR SB-AQ1 for AIR QUALITY CONTROLS (VOCs)

The SB-AQ1 is a tin dioxide semiconductor gas sensor which has a very high sensitivity to VOCs, solvents and many other gases. This model is suitable for air quality monitoring for general applications.

Structure

The sensing element is installed in the metal housing which has 5 holes in the path of gas flow (Fig 1 in the PDF).

Operating conditions

Fig 2 in the downloadable PDF shows the standard operating circuit for this model.

Sensitivity characteristics

Fig 3 in the PDF shows the sensitivity characteristics curves of the SBAQ1 (typical data). The sensitivity characteristics of the SB-AQ1 is specified by the following parameters.

• Sensor resistance level: in air
• Sensor resistance change ratio: between hydrogen 10 ppm and in air

For a full specification on this gas sensor download our Indoor Air Quality SB AQ1 DataSheet

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