THIES CLIMA LPM 5.4110.00.xxx laser precipitation monitor
THIES CLIMA

THIES CLIMA Laser Precipitation Monitor (LPM)

Series: Laser Precipitation Monitor (LPM)

Model: 5.4110.00.xxx

The THIES CLIMA LPM uses laser optics to measure precipitation particle size and fall velocity, classify precipitation, and output intensity, accumulation and size–velocity distributions. Heated optics support automatic all-weather observations for meteorological, road-weather and environmental monitoring.

Application / measured object:

Meteorological stations, road-weather monitoring, precipitation research, environmental observations and precipitation-impact assessment.

Application area:

Overview

The THIES CLIMA LPM uses laser optics to measure precipitation particle size and fall velocity, classify precipitation, and output intensity, accumulation and size–velocity distributions. Heated optics support automatic all-weather observations for meteorological, road-weather and environmental monitoring.

Key features

  • Classifies drizzle, rain, snow, hail, soft hail and mixed precipitation.
  • Simultaneously measures particle size and fall velocity for particle spectra and precipitation classification.
  • Intensity range from below 0.001 to 1000 mm/h, with 0.001 mm/h resolution.
  • Isolated RS-485 / RS-422 interface and two optocoupler outputs; ASCII, SYNOP and METAR formats.
  • Standard optical heating and an operating range of −40 to +70 °C.
  • Optional LNM View acquisition and visualisation software supports up to eight instruments according to its brochure.

Technical specifications

Parameter Specification
Particle-size range 0.16–8 mm
Particle velocity 0.2–20 m/s
Precipitation intensity <0.001–1000 mm/h
Intensity resolution 0.001 mm/h
Accumulation resolution 0.001 mm via RS-485 / RS-422
Pulse accumulation resolution 0.1 / 0.01 / 0.005 mm
Rain measurement error <15% at 0.5–20 mm/h
Snow measurement error <30% with wind speed below 3 m/s
Interfaces RS-485 / RS-422; two optocoupler outputs
Baud rate 1200–115200 baud
Laser 786 nm, maximum 0.5 mW, class 1M
Operating temperature / protection −40 to +70 °C; IP65
Dimensions / weight Ø270 × 170 × 540 mm; 4.8 kg

Model and configuration differences

Article number Power supply Rated load
5.4110.00.000 24 VAC/DC or 22–30 VDC <750 mA
5.4110.00.100 115 VAC 15 W
5.4110.00.200 230 VAC 15 W
5.4110.00.300 24 VDC 600 mA

System configuration and options

  • Instrument stand 4.3187.61.x00, wind shield 5.4200.00.000 and LNM View software 9.1700.99.000 are optional.
  • The concrete foundation required for the instrument stand is prepared on site.

Applications

Meteorological stations, road-weather monitoring, precipitation research, environmental observations and precipitation-impact assessment.

Selection

Select the article number for the available power supply and specify interfaces, wind shield and mounting requirements.