Complete system for precipitation measurement

PremiumHigh resolutionPrecipitation eventsRain intensityPrecipitation amountProfessionalSDI-12 digital outputWeighing tipping bucket


Complete system for precipitation measurement


  • Precipitation measurement networks
  • Measuring networks in the water industry
  • Weather services
  • Early flood warning
  • Traffic meteorology
  • Wastewater treatment plants
  • General meteorology and hydrology

Advanced technology for precipitation detection

Providing uncompromising product quality, the rain[e]observer combines the most innovative technologies for precipitation detection and measurement in one complete system. The weighing sensor rain[e] precisely determines precipitation amount and intensity from the very first drop. With the extension set and the Observer detection module, the precipitation data are also classified into 16 categories (defined by WMO) using radar measuring technology.

This real-time complete system simplifies measurement and data acquisition while ensuring the fastest possible response to flood events or road condition reports. 

  • Extremely fast, safe, easy to install and maintenance-free
  • Reliable detection of precipitation types with radar technology
  • Universally usable with all common data loggers and data acquisition systems 
  • Advanced technology designed to prepare for disasters and enable reaction within seconds
Professional Line
Measuring range:
According to SYNOP code table in the manual
SDI-12 · Modbus RTU
Range of application:
-40...70 °C (heated, no icing, no snow drifting)
Environmental conditions:
For storage -55...+80 °C
Current consumption:
In addition to the respective rain[e] 14 mA at 24 V; max. 25 W in heating mode
Protection class:
IP65 · IP67
Observer module: approx. 0.64 kg
Lug: V4A
Top cover: PC (Polycarbonate - UV stabilized)
Base plate: Aluminum, anodized
Lamellae: ASA
Accessories (order separately):
Weighing precipitation sensors rain[e], rain[e]314, rain[e]400, rain[e]H3
Data logger Ser[LOG]
Further accessories (power supplies, masts, traverses, cables, etc.) please see brochure
rain[e] · Weighing precipitation sensorrain[e] Weighing precipitation sensor

rain[e] is a new type of weighing precipitation sensor: Highest resolution combined with the most compact design.

The unique self-emptying collection system enables the measurement of every single drop with the high resolution of 0.001 mm/m2. Full functionality all year around without antifreeze fluid makes the rain[e] very environmentally friendly.

rain[e] is easy to lift, transport, install and maintain. The small packing volume and the low weight ensure minimum logistical effort.

The rain[e] series is compatible with OTT and Campbell Scientific data loggers and ideal for setup and expansion of rainfall measurement networks.

  • amazing resolution and accuracy
  • checking of sensors with tipping bucket and other weighing systems
  • compact and robust construction with a very low weight
  • all-metal housing, weatherproof and durable
  • best connectivity by several interfaces
  • installation and maintenance are very simple

Also with Modbus or customised protocols realisable!

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rain[e]314 · Weighing precipitation sensorrain[e]314 Weighing precipitation sensor

Like all rain[e]-series rain gauges, the rain[e]314 uses a sensitive measuring principle and fulfills all requirements of WMO Guideline No. 8. Real-time measured values for quantity and intensity of all liquid precipitation in the range of 0...720 mm/h will be output accurately and reliably. The rain[e]314 has a compact, robust design, with state-of-the-art weighing technology inside. Fully automatic continuous emptying prevents overflow and incorrect measurements and enables maintenance-free long-term use even under extreme weather conditions.   

  • real-time output of precipitation intensity, amount and total amount parameters
  • measurement of each drop with the amazing resolution of 0.001 mm/m2
  • compact design with enlarged 314 cm2 collecting area
  • best connectivity by diverse interfaces for simple system integration
  • version with highly efficient heating for low power consumption
  • easy calibration using a reference weight
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rain[e]400 · Weighing precipitation sensorrain[e]400 Weighing precipitation sensor

Latest weighing technology combined with a self-emptying precision tipping bucket allows the rain[e]400 a high resolution and high precision at a very small construction volume.
Already the first drop will be measured! The rain[e] is ideal to setup new measurement network as well as addition to an existing rainfall measurement network.  

  • amazing resolution and accuracy
  • checking of sensors with tipping bucket and other weighing systems
  • compact and robust construction with a very low weight
  • all-metal housing, weatherproof and durable
  • best connectivity by several interfaces
  • installation and maintenance are very simple
Read more
rain[e]H3 · Weighing precipitation sensorrain[e]H3 Weighing precipitation sensor

Due to the innovative weighing technology combined with a self-emptying collection vessel the rain[e] sets new standards in professional precipitation measurement. Its outstanding resolution and accuracy are approved all over the world. The rain[e]H3 with electronically regulated ring heating is designed especially for extreme cold climates. Integrated outside temperature sensor, real time clock, electronic monitoring when opening the housing and remote servicing are features of continuous development. With optional port server and web interface the rain[e]H3 is well equipped for all communicative demands in future.  

  • electronically controlled ring-, funnel- and drain-line heatings
  • outstanding resolution and accuracy
  • all-metal housing, weatherproof and long-living
  • easy installation and maintenance
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Ser[LOG] · Data loggerSer[LOG] Data logger

The Ser[LOG] system family allows you the greatest possible freedom for customizing your measurement tasks: extensibility due to modular design,  high flexibility due to a variety of configuration options and many possibilities through state-of-the- art communication interfaces

Ser[LOG] can be extended to a total of 3 AnDiMod analog/digital measuring modules. Available then up to 36 differential analog channels and 11 digital channels.

  • extensive sensor library
  • formulary and free formula parser
  • integrated alarm system for 10 alarm outputs via built-in and external relays, email, SMS
  • interference-proof due to high-quality, shielded aluminium housing
  • user-friendly with free access to all connections and controls
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