Laser Precipitation Monitor

Model Number:
Manufacturer: Adolf Thies GmbH & Co. KG

Laser Precipitation Monitor for the accurate measurement of precipitation type and amount in real-time


Laser Precipitation Monitor

The state-of-the-art Laser Precipitation Monitor (LPM) measures the amount, intensity and type of precipitation with great accuracy. The LPM is capable of measuring particles down to 0.16 mm diameter and can provide drop size distributions with 400 classes.

The data output is available in SYNOP, METAR, NWS, and in 4678 and 4680 WMO code. The system calculates intensity, volume (as water equivalent) and the spectrum of precipitation (diameter and velocity), the reduction to visibility in precipitation (MOR) and the radar reflectivity (Z).
The LPM uses reliable laser-optics to detect and discriminate different kinds of precipitation including:

  • drizzle (DZ)
  • freezing drizzle (FZDZ
  • rain (RA)
  • freezing rain (FZRA)
  • hail (GR)
  • snow (SN)
  • snow grains (SG)
  • ice needles (IC)
  • soft hail (GS)
  • ice grains (PL)


  • Measures precipitation amount, intensity, type
  • Measures particles down to 0.16 mm diameter
  • Maintenance-free
  • Mains or battery power
  • All year round use
  • Ability to add additional weather sensors

Common Specifications

Particle size range Ø0.16 to >8mm
Particle velocity range 0.2 to 20m/s
Intensity <0.005 to 250mm/hr
Drizzle >97%
Rain >99%
Hail >95%
Snow >99%
Snow grains >60%
Data output serial RS485
Additional inputs Temperature
Relative Humidity
Wind Speed
Wind Direction
Operating voltage - Sensor 24V AC or DC
115 V AC
230 V AC
12 – 24 V DC
Operating temperature -40° to +70° C
Dimensions 266 x 166 x 532mm
Protection IP65
Weight 4.8 Kg


Instrument Support

4.3187.61.100 1m

4.3187.61.200 2m

4.3187.61.300 3m


LNM View Software


Sales & Support

Contact Biral for more information

To find out more about this instrument or to discuss your application requirements please do not hesitate to contact Biral.

  • email (or use the Request More Information button below the product photograph)
  • Telephone to 01275 847787 (from the UK) or +44 1275 847787 (International)

After Sales Support

Biral offers free advice and technical support for the lifetime of the instruments we sell. Once you have purchased the unit you can always contact us for help using the links on our Technical Support page.