HT8700 is based on the state-of-the-art Quantum Cascade Laser Absorption Spectroscopy (QCLAS) technology. The product relies on the laser beam’s multiple reflections between two high-reflection mirrors exposing to the atmosphere, creating an effective optical path-length of several tens of meters. The weak absorption of the laser energy at the spectral peak is extracted from the noise using phase-sensitive lock-in amplification of the modulated laser wavelength/amplitude signal. The trace gas concentration is retrieved based on HealthyPhoton’s innovative absorption spectral characterization algorithm.
HT8700 can be used for Eddy Covariance Flux studies. It can accurately quantify the net exchange flux of atmospheric ammonia in various ecosystems.
Customer case: AFM: Scientists Develop a New Instrument to Measure Atmospheric Ammonia、AE: A diurnal pattern of NH3 dry deposition to cropland in North China agricultural area
Features and Benefits
Open Path, Ultra-sensitive, and Fast Response
- Ultra-sensitive NH3 density measurement using laser spectroscopy.
- No pump required, no time delays or attenuation from adsorption on the tubing.
- Fast response for large NH3 concentration change.
Portable Design for Versatile Field Deployment
- Strong environmental adaptability and vibration resistance.
- Enhanced carbon fiber spars that minimize drift.
- Heated mirrors that avoid signal loss due to condensation.
Remote Field and Mobile Measurement
- Low power that can be supplied by a solar panel or battery.
- Light weight, easy installation and maintenance in a remote field or on a vehicle.
|
Model |
HT8700E |
|
Gas |
NH3 |
|
Measurement Range |
0-2000 ppbv |
|
Ensure Accuracy Range |
0-500 ppbv |
|
Measurement Accuracy |
Allan < 0.3 ppbv |
|
@0.1s @zero gas @STD |
|
|
Default Data Output Frequency |
10 Hz |
|
Environment Temperature |
-10℃-45℃ |
|
Environment Humidity |
<99% R.H，non condensing@45℃ |
|
Atmospheric Pressure Range |
70 -110 kPa |
|
Supply Voltage |
24 VDC / 5A |
|
Consumption |
~50 Watts (TYP) |
|
Dimensions |
1046 mm x Ø196 mm |
|
Weight |
10 kg |
|
Data Communication |
RS232 |
|
Data Storage |
PC or a third-party data collector |
|
User Interface |
UI on the PC |
|
Optional Upgrade Modules |
Auto-cleaner, Rainfall Sensing, Mirror Heating |
Tel：+86-156-1892-2826 Email：info@healthyphoton.com
Add：Room 305, Building 1, Zhongchuang Science Park, Jinyuan Road, Panhuo Street, Yinzhou District, Ningbo City,China
