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Cable-Free Sensor
Wireless network means flexibility, cost savings, time savings
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The CWS655E is a wireless version of our CS655 soil water reflectometer. It has 12 cm rods and monitors soil volumetric water content, bulk electrical conductivity, and temperature. This reflectometer has an internal 868-MHz spread spectrum radio that transmits data to a CWB100E Wireless Base Station or to another wireless sensor. The 868-MHz frequency is commonly used in Europe.

The CWS655 is an soil-water-content reflectometer with a 900-MHz radio built in. The sensor has probes that are inserted into the soil and the sensor derives the water content of the soil. It is battery-powered and contains a spread-spectrum radio transceiver, so it has no cables to limit its placement. As part of a Campbell Scientific wireless network, it sends data to a CWB100 Wireless Base Station, which then can forward the data to a computer. The 900-MHz frequency is used in the USA and Canada.

Benefits and Features

  • Versatile sensor—measures dielectric permittivity, bulk electrical conductivity (EC), and soil temperature
  • Measurement corrected for effects of soil texture and electrical conductivity
  • Internal frequency-hopping, spread spectrum radio provides longer range and less interference
  • A reliable, low maintenance, low power method for making measurements in applications where cabled sensors are impractical or otherwise undesirable
  • Transmissions can be routed through up to three other wireless sensors
  • Battery powered
  • Compatible with CR800, CR850, CR1000, and CR3000 dataloggers
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