Tin Dioxide Semiconductor Gas Sensor for Methane Detection - SP-12A-00
• Target gas: Methane
• Heater voltage: 5.0 V ± 4%
• Circuit voltage: 5.0 V ± 4%
• Operating temperature: -10°C to 60°C
• Storage temperature: -20°C to 70°C
• Relative humidity: Less than 95% RH
• Sensor resistance: 4 kΩ to 15 kΩ
• Home gas leak detector
- Model Number: SP-12A-00
- Data Sheet:
- Quantity:
- - +
Product Specification
SP-12A-00 Methane Sensor CH4 Sensor Description
The SP-12A is a tin dioxide semiconductor gas sensor which has a good sensitivity and excellent selectivity to methane. The SP-12A has also a significant feature in good stability after exposure to silicone compounds.
Using the SP-12A, the most reliable methane detection can be achieved.
SP-12A-00 Methane Sensor CH4 Sensor Application
• Home gas leak detector
SP-12A-00 Methane Sensor CH4 Sensor Specifications
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Standard Operating conditions |
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Symbol |
Parameter |
Specification |
Conditions etc. |
|
VH |
Heater voltage |
5.0 V ± 4% |
AC or DC |
| VC |
Circuit voltage |
5.0 V ± 4% |
AC or DC |
| RL |
Load resistance |
Variable |
PS < 15 mW |
| RH |
Heater resistance |
42 Ω ± 2 Ω |
at room temperature |
| PH |
Heater power consumption |
380 mW (Typical value) |
PH = VH2 / RH |
|
PS |
Power dissipation of
sensing element |
Less than 15 mW |
PS =(VC - VRL)2/RS |
|
Environmental conditions |
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|
Symbol |
Parameter |
Specification |
Conditions etc. |
|
Tao |
Operating temperature |
-10°C to 60°C |
Recommended range |
|
Tas |
Storage temperature |
-20°C to 70°C |
|
|
RH |
Relative humidity |
Less than 95% RH |
|
|
(O2) |
Oxygen concentration |
21% ± 1% (Standard condition) |
Absolute minimum level: more than 18% |
|
The sensitivity characteristics are influenced by the variation in oxygen concentration. Please consult FIS for details. |
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Sensitivity characteristics |
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Model |
SP-12A-00 |
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|
Symbol |
Parameter |
Specification |
Conditions etc. |
|
RS |
Sensor resistance |
4 kΩ to 15 kΩ |
at 5000ppm of methane/air |
| β |
Sensitivity slope |
0.60 to 0.75 |
RS at CH4 7000 ppm RS at CH4 3000 ppm |
|
Standard Test Conditions: |
Temp: 20°C ± 2°C Humidity: 65% ± 5% (in clean air) |
VC : 5.0 V ± 1%
VH : 5.0 V ± 1% RL : 10 kΩ ± 5% |
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Pre-heating time: more than 48 hours |
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Mechanical characteristics |
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Items |
Conditions |
Specifications |
|
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Vibration |
Frequency: Vertical amplitude: Duration: |
100 cpm 4 mm 1 hour |
Should satisfy the specifications shown in the sensitivity characteristics. |
| Shock |
Height: Number of impacts: |
100 G 5 times |
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