New Filters for Pyroelectric Detectors
Now Available with NDIR Devices: Selectively Measure Water Vapor and Methane in Gas Mixtures
N05-033
To keep it short: Pyroelectric detectors are used in gas analysis. Each gas can be detected using a very specific wavelength – the so-called absorption wavelength.
Moisture is often tested with the wavelengths 1.94 µm and 2.9 µm; however, in this case, the absorption wavelengths of CO2 overlap the signal: with these wavelengths, the moisture of the gas mixtures can only be determined using complex measurement equipment.
However, with simple NDIR measurement devices, it is possible to achieve a reliable measurement: here, you only require the right filter and a suitable light source.
The central wavelengths of our new filters are selected in such a way as to significantly reduce the crosstalk to other gases to achieve uncomplicated measurements with NDIR measurement devices.
These three new filters are available for our pyro detectors:
- For the measurement of methane (CH4):
lCWL = 7.91 µm - For the measurement of alcohol mixtures:
lCWL = 9.50 µm - For the measurement of moisture (water vapor):
lCWL = 5.78 µm
An overview of all filters and filter curves can be found under the webcode provided!
Datasheet:
Further product information:
Pyroelectric Detectors
Manufacturer:
LASER COMPONENTS Detector Group
Contact:
| Contact Person: | Svante Karlsson |
| Company: | Laser Components Nordic AB |
| Address: | Skars led 3 |
| ZIP / City: | 41263 Göteborg - Sweden |
| Phone: | +46 (0)70 454 83 06 |
| Fax: | +46 (0)31 703 71 01 |
| Email: | s.karlsson@lasercomponents.se |
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