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Help CenterTGS3870-B00 Methane and Carbon Monoxide Gas Sensor
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TGS3870-B00 Methane and Carbon Monoxide Gas Sensor Features:
* Miniature size and low power consumption
* High sensitivity and selectivity to both methane and carbon monoxide (CO)
* Low sensitivity to alcohol vapor
* Long life and low cost
TGS3870-B00 Methane and Carbon Monoxide Gas Sensor Applications:
* Combination methane and carbon monoxide detectors
TGS3870-B00 is a micro-bead type semiconductor gas sensor for the detection of both methane and carbon monoxide. Using a micro-bead gas sensing structure, both methane and carbon monoxide can be detected with a single sensor element by periodic application of two different heater voltages (high and low). Miniaturization of the gas sensing bead results in a heater power consumption of only 38mW (average).
TGS3870-B00 has low sensitivity to alcohol vapors (a typical interference gas in the residential environment) and has high durability, making the sensor ideal for consumer market gas alarms.
TGS3870-B00 Methane and Carbon Monoxide Gas Sensor Specifications:
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Model number |
TGS3870-B00 |
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Sensing principle |
MOS type |
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Standard package |
Plastic base and metal can |
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Target gases |
Methane and Carbon Monoxide |
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Typical detection range |
Methane 500 ~ 12,500ppm
Carbon monoxide 50~1,000ppm
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Standard circuit conditions |
Heater Voltage |
VH |
VHH = 0.9V±3% for 5 sec.
VHL = 0.2V±3% for 15sec.
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Circuit voltage |
VC |
5.0±0.2V DC pulse
(refer to Technical Information for TGS3870-B00)
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Load resistance |
RL |
variable (>0.75kΩ) |
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Heater resistance |
RH |
3Ω±0.3Ω at room temp. |
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Heater power
consumption
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PH |
120mW |
VHH = 0.9V DC |
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11mW |
VHL = 0.2V DC |
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38mW |
average |
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Sensor resistance |
Rs |
0.35kΩ~3.5kΩ in 3000ppm methane
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1.8kΩ~24kΩ in 150ppm CO | ||||
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Sensitivity
(change ratio of Rs)
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β |
0.50~0.65 |
Rs (3000ppm CH4 )
Rs (1000ppm CH4)
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0.1~0.6 |
Rs (300ppm CO)
Rs (150ppm CO)
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Standard test
conditions
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Test gas conditions |
Target gas in air
at 20±2˚C, 65±5%R
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Circuit conditions |
VHH = 0.9V±2% for 5 sec.
VHL = 0.2V±2% for 15 sec. Vc = 5.0±0.02V DC pulse (refer to Technical Information for TGS3870-B00)
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Conditioning period
before test
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≥5 days | |||
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