ZDM100 Disdrometer
ZDM100
The ZDM100 is a disdrometer that measures raindrop and precipitation particle size distribution, rainfall rate, precipitation intensity and type, horizontal visibility and radar reflectivity from a detection area greater than 60 cm². It is supplied in the UK by MetSensor UK.
- ✓ Measures particle size distribution across 32 levels of diameter and fall velocity
- ✓ Precipitation intensity range 0.001-1000 mm/h
- ✓ Also reports horizontal visibility (10-5000 m) and radar reflectivity (-9.9 to 99 dBz)
- ✓ Onboard data storage: 21 days at 1-minute intervals
- ✓ IP65 enclosure, MTBF greater than 10,000 hours
- ✓ RS232, RS485, SDI-12, WiFi, Bluetooth, LTE interfaces
Specifications
| Detection area | >60 cm² |
|---|---|
| Particle size range | 0.125-26 mm |
| Rainfall rate (fall velocity) | 0.1-22 m/s |
| Particle size distribution | 32 levels (diameter and descent velocity) |
| Precipitation intensity | 0.001-1000 mm/h |
| Precipitation accuracy | ±5% liquid; ±20% solid |
| Visibility range | 10-5000 m (±5%); 5000-20000 m (±10%) |
| Radar reflectivity | -9.9 to 99 dBz (±15%) |
| Data storage | 21 days at 1-minute intervals |
| Power supply | 9-30 VDC (typical 12 VDC) |
| Power consumption | <3W normal; <18W with heating |
| Operating temperature | -40 to 85°C |
| Operating humidity | 0-100% |
| Interfaces | RS232, RS485, SDI-12, WiFi, Bluetooth, LTE |
| Enclosure rating | IP65 |
| MTBF | >10,000 hours |
| Rainfall rate | 0.1-22 m/s |
| Precipitation types | Drizzle, rain, snow, sleet, hail |
| Rainfall visibility | 10-5000m ±5%; 5000m-20000m ±10% |
| Power supply/consumption | 9-30VDC (typical 12VDC); <3W normal, <18W with heating |
| Storage | 21 days of minute-interval data |
| Environmental | -40℃ to 85℃; 0-100% humidity; IP65; coastal-area compatible |
| Reliability | MTBF >10000 hours; MTTR <40 minutes |
ZDM100 compared to others
| ZDM100 | Others | |
|---|---|---|
| Power (Without Heating) | <3W | 20W |
| Matrix Data Statistics | 24000 | 999 |
| Spectral Distribution | Unique | No |
| Build-in Storage | 21 Days (Minute Grade) | No |
| Additional Datalogger | No need | Need |
| Software Support | For Free | Charge |
| Warranty Period | Extendable | 1 Year |
| Customized Services | Yes | No |
Applications
- Artificial rainfall validation
- Soil erosion assessment
- Radar calibration
- Precipitation research
- Vehicle rain/fog simulation systems
- Soil conservation monitoring
- Regional rainfall pattern analysis
- Extreme heavy rainfall analysis
- Raindrop spectrum observation
- Fog monitoring
Frequently asked questions
What does a disdrometer measure that a rain gauge does not?+
A disdrometer such as the ZDM100 measures the size and fall velocity distribution of individual precipitation particles, plus precipitation type, visibility and radar reflectivity, in addition to rainfall rate.
What is the precipitation intensity range of the ZDM100?+
0.001 to 1000 mm/h, with ±5% accuracy for liquid precipitation and ±20% for solid precipitation.
How much data can the ZDM100 store onboard?+
21 days at 1-minute intervals.
What visibility range does the ZDM100 report?+
10-5000 m at ±5% accuracy, extending to 5000-20000 m at ±10% accuracy.
