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Tin Dioxide Semiconductor Gas Sensor for Refrigerant Detection
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Price
Price on request ≥1piece
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Model Number
SB-42A-00 -
Data Sheet
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Package
Original packaging -
Specs
SB-42A-00 -
Quantity
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Product Description
SB-42A-00 Gas Sensor for Refrigerant Detection Description
The SB-42A-00 is a tin dioxide semiconductor gas sensor which has a high sensitivity to HFCs (e.g. Freon: R134a) with improved cross sensitivity to other gases.
This model is suitable for R134a, R410a, R407c and other new Freon family which contains R134a. A significant feature of low power consumption design 120mW) is advantageous for portable devices.
SB-42A-00 Gas Sensor for Refrigerant Detection Application
• Industrial gas leak detector
SB-42A-00 Gas Sensor for Refrigerant Detection Specifications
The SB-42A-00 is a tin dioxide semiconductor gas sensor which has a high sensitivity to HFCs (e.g. Freon: R134a) with improved cross sensitivity to other gases.
This model is suitable for R134a, R410a, R407c and other new Freon family which contains R134a. A significant feature of low power consumption design 120mW) is advantageous for portable devices.
SB-42A-00 Gas Sensor for Refrigerant Detection Application
• Industrial gas leak detector
SB-42A-00 Gas Sensor for Refrigerant Detection Specifications
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Standard Operating conditions |
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Symbol |
Parameter |
Specification |
Conditions etc. |
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VH |
Heater voltage |
0.9 V ± 0.05V |
AC, DC or pulse |
| VC |
Circuit voltage |
Less than 5 V |
DC: Pin2 (+) - Pin 1 (-) |
| RL |
Load resistance |
Variable (> 200 Ω) |
PS < 10 mW |
| RH |
Heater resistance |
2.8 Ω ± 0.2 Ω |
at room temperature |
| IH |
Heater current |
130 mA |
IH = VH / RH (typical value) |
| PH |
Heater power consumption |
120 mW |
PH = VH2 / RH |
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PS |
Power dissipation of sensing element |
Less than 10 mW |
PS =(VC - VRL)2/RS |
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Environmental conditions |
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Symbol |
Parameter |
Specification |
Conditions etc. |
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Tao |
Operating temperature |
-10°C to 60°C |
Recommended range |
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Tas |
Storage temperature |
-20°C to 70°C |
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RH |
Relative humidity |
Less than 95% RH |
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(O2) |
Oxygen concentration |
21% ± 1% (Standard condition) |
Absolute minimum level: more than 18% |
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The sensitivity characteristics are influenced by the variation in oxygen concentration. |
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Sensitivity characteristics |
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Model |
SB-42A-00 (tentative specifications) |
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Symbol |
Parameter |
Specification |
Conditions etc. |
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RS |
Sensor resistance |
2 kΩ to 20 kΩ |
at 100 ppm of R-134a/air |
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β |
Ratio of sensor resistance |
0.50 to 0.65 |
Rs at 300 ppm of R-134a Rs at 100 ppm of R-134a |
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R/Rair |
Resistance change in gas/air |
≤ 0.40 |
Rs at 100 ppm of R-134a
Rs in air
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Standard Test Conditions: |
Temp: 20°C ± 2°C Humidity:65% ± 5% (in clean air) |
VC : 5.0 V ± 1%
VH : 0.9 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 after test. |
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Shock |
Acceleration: Number of impacts: |
100 G 5 times |
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