Disdrometer & Distrometer
ZATA ZDM100 Disdrometer is a laser instrument that measures the drop size /rainfall types(intensity) / visibility. Mainly used in the field of hydrometeorology.
Meteorology
Observation of Raindrop Spectrum and Fog
Disdrometers Features
Laser disdrometer can continuously observe the size, velocity and quantity of precipitation particles by using the principle of laser active detection, and deduce the size distribution, precipitation, radar reflectance, precipitation type, etc. It can distinguish drizzle, rain, snow, hail, snow and mixed precipitation.
Disdrometer Working Principle
How to measure raindrops
When the instrument works, the transmitter emits a stable red horizontal laser beam with 650 nm wavelength. The speed of light passes through the sampling area, which is detected by the laser receiver and converted into electrical signal.
The signal passes through a high-precision and stable amplification circuit, and is synchronously converted into digital signal by the A/D converter in the receiver. The signal is sent to the micro-processing controller and retrieved by the micro-processing controller.
The number of precipitation particles, particle size, falling speed and so on are obtained after sample and calculation. The statistical results are transmitted to the PC through RS-232 or RS-485 serial channel in real time.
Measurement of raindrop sizes:
When no precipitation particles fall through the laser beam, the output signal of the receiver is the largest. When the precipitation particles pass through the horizontal beam, they block part of the beam with their corresponding diameter, thus reducing the output signal.
We determine the diameter of precipitation particles by the size of signal reduction.
Disdrometer Technology Parameter
Detection area | >60cm2 |
Partical size | 0.125-26mm |
Rainfall rate | 0.1—22 m/s |
Particle size distribution | 32 level particle diameter size and 32 level descent velocity |
Precipitation Type/Code | Drizzle, rain, snow, sleet, hail, etc., can provide the WMO 4688/4677 (SYNOP) 4678 (METAR) and the national code. |
Precipitation intensity | 0.001—1000 mm/h |
Precipitation Accuracy | ±5% (liquid precipitation), ±20% (solid precipitation) |
Rainfall visibility | 10—5000m ±5% |
Radar reflectivity | -9.9—99dBz，±15% |
Interface | RS232 / RS485 / SDI 12 / |
Enclosure protection class | IP65 |
| Power | |
| Power supply mode | 9—30VDC，Typical 24VDC |
| Power dissipation | ＜0.5W |
| Environmental suitability | |
Operating temperature | -40℃—+80℃ |
Operating humidity | 0—100% |
Geographical adaptability | Can be used in coastal areas |
ZDM100 Disdrometers Applications
Industry Application
Testimonials
what our clients say
By deploying six disdrometers in Taiwan, we can fully detect the impact of each rainfall process on soil erosion, which is of great significance. We owe it to the disdrometers from ZATA Company.
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ZDM100 Disdrometers FAQs
Here are your concerns
What Is Disdrometer?
A disdrometer is a laser instrument that measures the drop size distribution falling hydrometeors.
What Can A Disdrometer Measure?
- Droplet Spectrum of Precipitation
- Precipitation types
- Precipitation intensity
- Radar Reflectivity
- Horizontal visibility
What A Disdrometer Can Be Used For?
- Evaluation of Artificial Rainfall Efficiency
- Soil erosion Assessment
- Monitoring of Soil Momentum
- Rainfall Radar Coefficient Calibration
- Analysis of Regional Rainfall Patterns
- Analysis of Extremely Heavy Rainfall
What Is the Disdrometer Price?
Disdrometer is a professional outdoor rainfall analyzer, the price is still relatively high, about $8000-12000.
Can A Disdrometer Replace A Rain Gauge?
No.Their positioning is different. Conventional Tipping rain gauges are mainly used as wmo-approved main rainfall observation equipments, mainly used in the meteorological station system.
The disdrometer is a professional analytical instrument, mainly for scientific research users, independent deployment of the field.
Can A Disdrometer Replace a Visibility Sensor?
Disdrometer can monitor horizontal visibility information, but it is only a subsidiary function, and its monitoring range is small, so it can not replace professional visibility sensor.