Summary of Contents for Spectrum Technologies FieldScout TDR 350
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FieldScout® TDR 350 Soil Moisture Meter Product Manual Item #6435 “To Measure Is To Know” “To Measure Is To Know” info@specmeters.com www.specmeters.com 800.248.8873...
Updating & Calibration........13-14 This manual will familiarize you with the features and operation of your new FieldScout TDR 350 Soil Moisture Meter. Please read this manual thoroughly before launching the unit. For customer support or to place an order, call Spectrum Technologies, Inc. at 800-248-8873 or 815-436-4440, FAX at 815-436-4460, or e-mail at info@specmeters.com.
PRODUCT DETAILS Specifications Characteristic Description Power 4 AA Batteries (included) Weight 4.3 lb (1.9 kg) Log Capacity 50,000 Measurements Display Backlit, High-Contrast, Graphic LCD IP Rating Display: IP53, Probe: IP67 Connectivity USB Type A, Bluetooth Low Energy Measurement Units % Volumetric Water Content (VWC) Period (raw sensor reading) Electrical Conductivity (EC) in milliSiemens per centimeter Resolution, Accuracy &...
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Display Screens The TDR350 has 3 main display screens: • Startup • Reading • Settings Menu Startup Information Screen Initially displayed after powered on • Displays model, serial number and firmware version • Press and hold ON/OFF|BACK button to remain on this screen Reading Screen Displays the last measurement, EC in milliSiemens per centimeter, temperature, selected rod type, selected soil type and a reading count with running average.
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Moisture Type: • VWC%: Volumetric Water Content with EC compensation • Period: Raw sensor reading in microseconds (μs) • TDR 300: VWC% without EC compensation Auto-Off: Power off delay (15, 30, 45, 60 minutes) Current Date, Current Time: Set/Display the current time and date values Time Zone: Offset from Greenwich Mean Time, as the offset changes, the Time and Date will update Daylight Savings: ON or OFF Calibration*: Overrides factory calibration...
SETUP GNSS (Location) Settings GNSS Location adds the ability to log global position coordinates with measurements to aid in irrigation mapping of crops and turf greens. Location references are stored with the measurement in the data log and can be uploaded to the Cloud through the SpecConnect FieldScout Mobile App option.
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Intial Use: During the first three days of use, the meter’s GNSS receiver will build an internal satellite record used for tracking and accuracy. Accuracy during this time may appear low, will depend on the accuracy of available satellite systems, and can vary within 10 meters.
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FieldScout Mobile App: Set Up and Use At any time, tap the app’s menu icon to view or edit options. Enable the TDR’s Bluetooth and GNSS options Open the FieldScout mobile app Enter the SpecConnect username and password to send measurements to the cloud account or tap Use FieldScout Basic to start grid mode During first use tap the Golf or Agriculture icon Add a Course/Farm or select an existing session...
OPERATIONS Button Functions ON/OFF|BACK Button • Press briefly to power on • Press and hold to power on and stay on the logo screen • Press and hold for 2 seconds to power off • Press within a menu to return to prior screen MENU|SELECT Button •...
Meter Operations Probe Base, Thumb Screw and Probe Rods Setting Up the Meter Slide the lock washers onto the threaded ends of the handle bars Install the two cushion grip handles and tighten securely Pull the battery transport tab out of the display unit Select a set of probe rods and screw them to the bottom of the probe block, tightening securely Set the desired user settings in the settings menu Taking Readings...
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Data Collected The following information is logged with each reading: Time MM/DD/YYYY HH:MM:SS based on the GMT offset selected in the Time Zone option VWC% Volumetric Water Content based on the Moisture Type setting - EC Compensated or “TDR 300” (without EC Compensation) Period Raw Period result (after any applied user calibration) Electrical Conductivity in milliSiemens per centimeter...
The salinity level of soil is an important component of irrigation and nutrient management. The source of soil salts ranges from the original patent material, additions from natural sources and management activity. High salt concentration in the soil has a negative effect as plant roots cannot bring in sufficient soil moisture, However, fertilizer exists as salt ions in that same soil solution.
Display Installation Reconnect the sensor cable to the 3.5mm connector on the back of the display module if previously removed. Insert the foam spacer back behind the sensor cable if previously removed. The split end fits around the sensor cable molding. If equipped with the IR temperature sensor option, attach it to the smaller diameter connector.
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Calibration The FieldScout TDR is fully calibrated at the factory. Further calibration is not required, nor recommended. The meter has internal calibrations that will work for many soil types. Each meter will have a small difference in how it responds to identical soil conditions.
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RMA number or for the loss of the package by any shipping company. 3600 Thayer Court Aurora, IL 60504 Form 133 (23-125) 800.248.8873 Rev. A 07/2023 Spectrum and FieldScout are registered trademarks of Spectrum Technologies, Inc. www.specmeters.com...
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