VT
Type P12-HC
Description： VT P12-HC is a new hydrocarbon (HC) NDIR detector made of CMOS-MEMS
technology, which has the characteristics of high infrared responsivity, high
repeatability and high reliability.
The detector is packaged in a TO-39 metal tube, with a built-in high-precision thermistor chip,
which can compensate the ambient temperature.
And configure two infrared filter windows (the transmittance curve is
shown in the figure below),Dual-channel detection can offset the influence of the
environment on the detector, and can be widely used in HC NDIR gas detection and spectral analysis.
●Other filters, such as: 3.3 μm filter for detecting CH4, can be customized according to requirements.
Features： 1.High infrared response rate, high signal-to-noise ratio
2.Dual window packaging, high reliability
3.Anti-electromagnetic interference
4.High precision thermistor including ambient temperature compensation
◆Product application
-NDIR HC gas detector
-Hydrocarbon bonded gas
(e.g. refrigerant) monitoring
◆Product specification
| Parameter | Symbol | Typical Value | Unit | Conditions |
| Chip resistance | RTP | 84±10 | KΩ | 25℃ |
| Temperature coefficient of resistance | TCRTP | 0.02 | %/K | 25℃ |
|
Signal voltage |
Vs | 55 | μV | MET Sensor test set-up: IR source Axetris-EMIRS200,6.5 V, 4 Hz, distance 15 mm |
|
Signal voltage |
Vs | 80 | μV | |
| Response time | t | 13 | ms | |
| Equivalent Noise Voltage | VN | 37 | nV/Hz1/2 | 25℃ |
◆Spectral characteristics of optical filter
| Infrared Channel Filter1 F3.91 | ||||
| Parameter | Symbol | Typical Value | Unit | Remarks |
| Center wavelength | CWL | 3910±40 | nm | |
| FWHM | HPB | 90±20 | nm | |
| Peak transmittance | T Peak | >75 | % | |
| Cut-off area | T Peak | <1 | % | From UV to Band Pass |
| T average | <0.1 | % | ||
| Infrared Channel Filter2 F3.40 | ||||
| Parameter | Symbol | Typical Value | Unit | Remarks |
| Center wavelength | CWL | 3400±30 | nm | |
| FWHM | HPB | 120±20 | nm | |
| Peak transmittance | T Peak | >80 | % | |
| Cut-off area | T Peak | <1 | % | From UV to Band Pass |
| T average | <0.1 | % | ||
◆Maximum rated temperature
| Parameter | Typical Value | Unit |
| Operating Temp. | -40~100 | ℃ |
| Storage Temp. | -40~100 | ℃ |
◆Dimension diagram
◆ NTC R-T Table
| Resistance | 100k Ohms at 25deg. C | Resistance Tolerance | + / -3% |
| B Value | 3950K at 25/50 deg. C | B Value Tolerance | + / - 1% |
