TDR Measurement Rods – Set of 2 Probes: Multiple Length Options Available
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TDR Measurement Rods – Set of 2 Probes: Multiple Length Options Available | Spectrum Technologies

The TDR Measurement Rods are essential accessories for all FieldScout® TDR Soil Moisture Meters (TDR 150, 250, 300, and 350). They allow users to adapt the measurement depth according to soil type, root zone, and test conditions. 

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The TDR Measurement Rods are essential accessories for all FieldScout TDR Soil Moisture Meters (TDR 150, 250, 300, and 350). They allow users to adapt the measurement depth according to soil type, root zone, and test conditions. Available in several lengths, these stainless-steel rods provide accurate volumetric water content (VWC%) readings at the desired root depth.

Key Benefits:

  • Universal compatibility: designed for all TDR models (150, 250, 300, 350).
  • Measurement versatility: multiple rod lengths available to match specific root depths.
  • Easy installation: quick replacement, no tools required.
  • High precision: stainless-steel rods ensure excellent conductivity and stable readings.
  • Durability: corrosion-resistant materials built for intensive field use.

Main Specifications:

  • Material: high-strength stainless steel.
  • Mounting: direct screw-on connection to the TDR sensor head.
  • Compatibility: TDR 150, TDR 250, TDR 300, TDR 350.
  • Packaging: sold as a set of 2 rods per reference.

Typical Applications:

  • Irrigation and fertilization management in agricultural soils.
  • Moisture monitoring on sports turf, golf courses, and greenhouse environments.
  • Agronomic research and soil water retention studies.

Why Choose These Rods:

  • Reliable and repeatable readings across all measurement depths.
  • Fully compatible with all FieldScout® TDR Series meters.
  • Rugged construction built for long-term use in the field.
  • Flexible setup to adapt each measurement to the soil structure.

Comparison Table:

Model Rod Length Typical Measurement Depth Recommended Applications
Package of 2 TDR Rods – 1.5" (3.8 cm) 3.8 cm 0–5 cm Surface measurements, short turf, fine substrates, golf greens.
Package of 2 TDR Rods – 3.0" (7.6 cm) 7.6 cm 0–10 cm Shallow root zones, sports turf, horticultural soils.
Package of 2 TDR Rods – 4.8" (12.2 cm) 12.2 cm 0–15 cm Natural grass areas, light to medium agricultural soils.
Package of 2 TDR Rods – 8.0" (20 cm) 20 cm 0–20 cm Deep root measurements, field crops, compact or clay soils.

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