Overview
The NDIR gas sensor can measure the CO2 gas concentration through the change of the resistance value of the internal thermistor. The product is packaged in a TO-39 metal socket and has two separate filters: one is the reference filter and the other is a narrow bandpass filter for the CO2 gas band. The sensor integrates electronic components such as thermopile chips and thermistor, with high reliability and high sensitivity.
Feature
★ TO- 39 Housing
★ High sensitivity
★ NTC Thermistor Compensation
★ Fast response
★ 4.26μm,3.91μm narrow bandpass filter
Datasheet
Parameter | Min. | Typ. | Max. | Unit | Conditions |
Chip size | 1.1×1.1 | mm2 | |||
Sensitive area | 0.35×0.35 | mm2 | |||
Thermopile resistance | 80 | 98 | 115 | KΩ | Temp=25℃ |
Noise voltage | 36±2 | nV/ Hz1/2 | Temp=25℃ | ||
NEP | 0.23 | nW/Hz1/2 | Blackbody=500K,1Hz@25℃ | ||
Responsivity | 134 | 164 | 194 | V/w | Blackbody=500K,1Hz@25℃ |
Temp. coefficient of resistance | 0.06 | %/℃ | Temp=25℃～ 75℃ | ||
Time constant | ≤ 13 | ms | |||
Specific detectivity | 1.51×108 | cmHz1/2/w | Blackbody=500K,1Hz@25℃ | ||
NTC Resistance | 100±3% | KΩ | 25℃ | ||
NTC β | 3950±1% | K | 25/50℃ | ||
Dimensions
Tel.: +86-755-82594732
E-mail: sales.sz@nysenba.com
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