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From the WS product family of professional intelligent measurement transducers with digital interface for environmental applications.

WS600-UMB Compact Weather Station for measuring of air temperature, relative humidity, air pressure, wind direction and wind speed. Relative humidity is measured by means of a capacitive sensor element; a precision NTC measuring element is used to measure air temperature. Ultrasonic sensor technology is used to take wind measurements. Measurement output can be accessed by the following protocolls: UMB-Binary, UMB-ASCII, SDI-12, MODBUS One external temperature or rain sensor is connectable.

Air Temperature & Humidity
Temperature is measured using a highly accurate NTC-resistor, while humidity is measured using a capacitive humidity sensor. Both sensors are located in a ventilated radiation shield to reduce the effects of solar radiation.

Pressure
Absolute air pressure is measured using a built-in MEMS sensor. The relative air pressure referenced to sea level is calculated using the barometric formula with the aid of the local altitude, which is user-configurable on the equipment.

Wind Speed & Direction
The wind sensor uses four ultrasound sensors which take cyclical measurements in all directions. The resulting wind speed and direction are calculated from the measured run-time sound differential.

Compass
The integrated electronic compass can be used to check the north-south adjustment of the sensor housing for wind direction measurement. It is also used to calculate the compass-corrected wind direction.

Key Features

  • Ventilated housing allows more accurate measurements in high radiation conditions
  • Third-Party-Rain gauge sensors are compatible: 0.1mm, 0.2mm, 0.5mm, 1mm heated and unheated
  • Analog outputs in combination with 8160.UDAC
  • MODBUS
  • SDI-12
  • UMB-Binary
  • UMB-ASCII
  • Open communication protocol
  • Easily mounts to 2
  • Aspirated temperature/humidity measurement

Technical Specifications

Principle NTC
Measuring range -50...60°C
Accuracy ±0.2°C (-20°C...+50°C), otherwise ±0.5°C (>-30°C)
Resolution 0.01mm
Measuring range drop size 0.3...5mm
drop size 0.3...5mm
Precipitation type Rain/snow
Principle capacitive
Measuring range 0…100% RH
Accuracy ±2% RH
Principle MEMS capacitive
Measuring range 300...1200 hPa
Accuracy ±1.5hPa
Principle Ultrasonic- 2.4Ghz
Measuring range 0...359.9°
Accuracy ±3°
Principle Ultrasonic- 2.4Ghz
Measuring range 0...60m/s
Accuracy ±0.3m/s or ±3% (0...35m/s)
Heating 40 VA at 24 VDC
Protection type housing IP66
Interface RS485, 2-wire, half-duplex
Operating power consumption 24 VDC +/- 10% < 4VA (without heating)
Operating humidity range 0...100%
Operating temperature range -50...60°C

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