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Fire Depth Sensor

Fully inclosed, durable belowground temperature sensor

Applications

  • ​Estimating nutrient flux in soils during and after Fire events

  • Estimating water repellency during and after Fire Events

  • Assess soil burn severity

Specifications

  • Dimensions: Body is 6.35 cmx30.48 cm; Needles are 3 mmx17 mm

  • Temperature sensors: 6 k-type thermocouples (accurate up to 1100 C)

  • Materials: The Needles and enclosure are made of steel for increased temperature resilience

Theory

​The High temperature Soil depth sensor measures soil temperature at 6 depths to obtain an accurate soil temperature profile. Temperature is measured at depths of 1,2,3,4,6 and 8cm using k-type thermocouples. Data is collected and stored on a microSD card, which also can be used to easily configure data intervals and data format.  This sensor is completely contained, and operates off of a rechargeable battery with a single charge lasting approximately 14 days, at a data collection interval of 2 seconds. With temperature data, fire intensity as well as soil water repellency and soil nutrient flux can be determined. This sensor allows for faster response and reclamation following devastating fire events.

What you need

  • 3-5/8ths in (8cm) auger for installation

  • GPS enabled device for GPS marking of exact sensor location

  • Metal T-Post or stake (optional) for marking sensor location

In the Package

Fire temperature depth sensor, with 1GB microSD for data collection and sensor configuration, microSD card adapter, and charging cable for battery 

Selected Publications

https://www.fs.fed.us/rmrs/projects/high-soil-temperature-data-archive