TDR 150 with rods Enlarge View
TDR 150 with rods
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  • 150 display
  • TDR 150 with case and rods
  • TDR 150 with rods
  • 150 display
  • TDR 150 with case and rods
  • TDR 150 with rods


*FieldScout TDR 150 Soil Moisture Meter (Case Included, Rods Sold Separately)

Order yours today! The TDR 150 portable soil moisture meter offers the performance that you have come to recognize for more than 30 years.

* TDR Rods not included, please order separately New Item Bluetooth Enabled
Quantity Item Name Item Number Price
*FieldScout TDR 150 Soil Moisture Meter (Case Included, Rods Sold Separately) 6445 $1,095.00
The following items are required for the product to function properly. They are sold separately.
Quantity Item Name Item Number Price
TDR Rods-Two 1.5in (3.8cm) Rods 6428FS4 $69.00
TDR Rods - Two 3in (7.6cm) Rods 6429FS4 $69.00
TDR Rods - Two 4.8in (12.2cm) Rods 6431FS4 $74.00
TDR Rods - Two 8in (20cm) Rods 6432FS4 $84.00
The following items are optional.
Quantity Item Name Item Number Price
Fieldscout Bluetooth and GPS for TDR 150 6445GBU $95.00
*Infrared Temperature Sensor for TDR 150 6445TS $179.00
SpecConnect FieldScout Pro (1 Year) 1-3 FieldScout Devices 3035A $224.00
SpecConnect FieldScout Pro (1 Year) 4-7 FieldScout Devices 3035B $434.00
SpecConnect FieldScout Pro (1 Year) 8 or more FieldScout Devices 3035C $644.00
Replacement Case for TDR150 6445CASE $35.00
Product Features

FieldScout TDR 150 Soil Moisture Meter

Performance, Upgraded.

NOW with Bluetooth and GPS included! Portable soil moisture meter allows you to obtain readings on the go at the press of a button. Variable rod length options provide soil moisture measurements at your ideal root zone. With new enhancements, the TDR 150 provides significant improvements in performance and measurement accuracy for optimal turf and soil environments.

  • Increased accuracy of soil moisture (Volumetric Water Content)
  • Measures EC (Electrical Conductivity)
  • Measures Turf Surface Temperature
  • Bluetooth and GPS included
  • Data logger records approximately 50,000 measurements
  • Industry exclusive backlit display
  • Ergonomic handle
  • Data collected with USB flash drive
  • No PC interface needed
  • Powered by AA lithium batteries
  • Ideal for measuring containers on benches
  • Optional IR Temp sensor to measure canopy
  • This product is warranted to be free from defects in material or workmanship for two years from the date of purchase.

Note: Rods are required for TDRs to function



Manage with the FieldScout Mobile App

Capture and analyze measurements on your turf using Blutooth wireless technology on our FieldScout TDRs 350, 300, 150 and Trufirm.

  • Visualize field readings in real time and e-mail relevant information
  • Upload to SpecConnect Web Portal and view your entire course’s data at once and export for further analysis (Pro Features)
  • Color-coded to represent a scale of turf firmness, moisture, surface temperature and EC
  • Free download from App store or Google Play
  • Works on iOS and Android devices
  • 2-year warranty (serial number 3000 and above)


CALIBRATION FEATURE - If you purchased your meter before 2012, the TDR family of soil moisture meters now includes the option to perform a calibration on an individual meter.  The calibration is done in 2 media; air and distilled water.  This new feature took effect with firmware version 6.5 and is included with units shipped after January 1, 2012 (purchased directly thru Spectrum). Meters with firmware versions earlier than v. 6.5 can be upgraded by purchasing and installing an updated microcontroller chip (Item #CHIP-TDR3, see above table for purchasing). See Calibration Feature of FieldScout TDR Meters for more details. Firmware version 6.5 or higher required for FieldScout Bluetooth Device connection







Measurement Principle:

Time - domain measurement methods

Measurement Units:

Percent Volumetric Water Content (VWC)


0.1% VWC


+- 3.0% VWC with Electrical Conductivity (EC)  < 2 mS/cm


0% to saturation (Saturation up to about 50% volumetric water depending on soil type)


4 AA lithium batteries; approximately 100,000 readings without backlight

Data Logger:

50,000 measurements


Range: 0 to 5 mS/cm, Resolution: 0.01 mS/cm, Accuracy: +/- 0.1 mS/cm


Range: -30°C to 60°C, Resolution: 0.1°, Accuracy: +/- 1°C


Product Literature

2024 Spectrum General Product Catalog - CLICK HERE

Product Flyer - 6445 TDR150 Soil Moisture Meter - CLICK HERE


Product Manual - 6445 TDR150 Soil Moisture Meter - CLICK HERE


Quick Start Guide - 6435 TDR350/6250 TDR250/6445 TDR150 - CLICK HERE


Quick Start Guide - TDR Rod Spacer - CLICK HERE


View Product Videos HERE


© Spectrum Technologies, Inc. All Rights Reserved.

Spectrum Technologies, 3600 Thayer Court, Aurora, IL 60504, Phone - 800-248-8873