Contact combustion type gas sensor NAP-78SU

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NAP-78SU Contact combustion type gas sensor

Contact combustion type gas sensor NAP-78SU

For consumer
Consumer alarm
Water heater / boiler
Contact combustion type
Incomplete combustion exhaust gas

NAP-78SU is a gas sensor developed to detect incomplete combustion of gas water heaters. It can directly detect exhaust gas at about 200 ° C and is sensitive to carbon monoxide and hydrogen.A bridge circuit is built on the board, and it can be adjusted to any zero point with a variable resistor.

【Feature】

Module type
For carbon monoxide and hydrogen gas only
High temperature durability

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NAP-78SU specifications

Gas sensitivity characteristics

Temperature characteristics

Dimensions

Recommended measurement circuit

basic specifications

Sensor (RC)	NAP-78SU
Detection gas	Incomplete combustion exhaust gas
Applied voltage	2.0 ± 0.05V
Clean air output	30 +/- 3mV
Detection concentration range	Within 1% (including 0.5% hydrogen)
Output value * Methane, isobutane, propane, hydrogen sensitivity (10% LEL)	1000ppmCO + 500ppmH2: 5-7mV
Current consumption (at applied voltage)	150 +/- 10mA
Operating environment (temperature conditions, humidity conditions)	-20 ~ + 200 ℃ Less than 95% RH without condensation
Storage environment	-30 ~ + 70 ℃ Less than 99% RH without condensation
Response time (T90)	T90: Within 10 seconds
Same day reproducibility	Zero point: ± 0.5 mV Gas sensitivity: ± 0.5% LEL
Annual zero point drift	Zero point: +/- 2mV / year
Long-term stability	Sensitivity: +/- within 2 mV / month
Design life	5 years or more (in appropriate consumer and small commercial applications)
Recommended storage period	6 months
Straightness	50% LEL

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