SKU: 71337020418
tdr 300 soil moisture meter

tdr 300 soil moisture meter TDR Soil Moisture with Probes – Boston Instruments

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Description

tdr 300 soil moisture meter TDR Soil Moisture with Probes – Boston InstrumentsPrecise as a laboratory and as mobile as a cell phone. This TDR device measuring the soil moisture content, the soil conductivity EC, and the level of salt contamination can now be performed as fast and easy as never before! Within two seconds, the moisture content value, the temperature, and the soil conductivity EC are displayed on its clear display. The probes will report soil EC as standard simultaneously with soil moisture content percentage. The

Precise as a laboratory and as mobile as a cell phone.

This TDR device measuring the soil moisture content, the soil conductivity EC, and the level of salt contamination can now be performed as fast and easy as never before! Within two seconds, the moisture content value, the temperature, and the soil conductivity EC are displayed on its clear display.

  • The probes will report soil EC as standard simultaneously with soil moisture content percentage.
  • The probes measures conductivity with the same large soil volume as it will be used for the TDR moisture measurement.
  • It’s durable and waterproof construction ensures safe handling even under difficult environmental conditions.

Soil Moisture readings for top layers

Using a highly accurate TDR probe for:

  • Highly accurate TDR technology
  • Direct measurement of soil moisture content
  • Integrated soil temperature sensor
  • Soil electrical conductivity measurements
  • Large measurement volumes
  • User replaceable rods.

Benefits at a glance

  • Extremely robust and stable
  • Powerful battery for hundreds of measurements
  • Easy use with one hand via four buttons
  • High reliability even under challenging environmental conditions

Applications and advantages

  • Connected to the TDR is the two-rod probe
  • Based on radar technology
  • Handy two-rod probe with solid rods
  • Measurement via radar technology with an electromagnetic TDR impulse with 1 GHz to measure the water content precisely to material saturation
  • Display of measuring value within two seconds
  • Robust and watertight structure
  • Probe can be connected to a PC for data collection, change of operation mode or calibration
  • Delivery with a resistant hard shell case for trouble-free transport

Technical Specifications

Height

36mm

Width

64mm

Length

150mm

Weight

(with accumulator)

Power Consumption

Power Down

ca. 35μA

Idle

- Background Illum. OFF
- Background Illum. Max

ca. 26mA
ca. 56mA

Sonde eingeschaltet

ca. 100mA

Measurement

ca. 350 mA

Measurement per Charge

20°C / Background Illum. Max
Mode – Continuous Measurement

ca. 5000

Connectable Sensors

TDR tube access probe

Storage Temperature

-30°C up to 80°C

Operating Temperature

-20°C up to 70°C

Charging Temperature

10°C up to 30°C

Charging Voltage

Nom. 12V, Max. 15V, Min. 12V

Charging Current

ca. 1A

Charging Time

At exhaustively discharged accumulator. 2h

Accumulator

Ni-MH (4 x 1.2V) (AA), 2000mAh, >1500 Measurements

Physical BUS

RS485

Bus-Protocol

IMP-BUS-Protokoll II

IMP-Bus Port Settings

8 Data Bits, 2 Stopp Bits, Odd Parity

 

TDR Moisture Sensor Probe Technical Specifications:

Power supply:

7V..24V-DC

Power consumption:

100mA @ 12V/DC during 2..3 sec. of measuring

Moisture measuring range:

0..100% volumetric water content

Accuracy (in % volumetric water content):

conductivity range:

0..6dS/m

6..20dS/m

> 20dS/m

Moisture range 0..40%:

±1%

±2%

with material 
specific calibration

Moisture range 40..70%:

±2%

±3%

Repeating accuracy:

±0.2%

±0.3%

Temperature caused drift of electronics 
(full range):


±0.3%

Soil temperature measuring range:

-15°C...50°C

Soil temperature measuring accuracy:

±1,5°C absolute, ±0,5°C relative

Measurement volume:

1,25L ≙ 160x100mm diameter

Operating Temperature:

-15°C...50°C (extended temperature range on request)

Calibration:

Calibration for a wide range of standard soil types (in accordance with Topp (equation))

standard calibration for most soils
customizable material specific calibration
storage of up to 15 user defined calibration curves
calibration of dialectric permittivity is possible

Probe body:

waterproof sealed PVC

Size:

155 x Ø63mm

Rod length:

200mm

Rod diameter:

6mm

Interfaces:

IMP-BUS
RS485
Analogue output: 2x 0..1V, 0(4)..20mA*

 

Delivery within 2-45 business days.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71337020418

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Delmy oliva
Lexington, US
★★★★★ 5
Nice i have all what need in there
Color: Silver, Color: Silver
"I’m really happy with this product. It exceeded my expectations in every way. The quality is excellent, it arrived quickly, and it works exactly as described. I would highly recommend it to others."
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Reviewed in the United States on May 9, 2026
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V.A.
Lowell, US
★★★★★ 5
Great addition to my sink!
Color: Black, Color: Black
This is a great sink organizer. I like a place for everything, and to hang up our dish cloth when done using it. We had a suction cup holder for that purpose but it broke several weeks ago. When this came in I noticed the 'washcloth bar' was just as another reviewer noted....pretty useless, unless you find a way to glue it down, so I chose to just toss that piece. We hang the cloth on the front fork piece, but that is also not secure and kept falling off. The simple solution for me was using some electrical tape to secure it. Not even noticeable and now works beautifully. Love the drainage with the sloped bottom, and having a spot for all the little thing we need handy at the sink. Highly recommend!
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Reviewed in the United States on February 21, 2025
A
Verified Purchase
Angelia
Louisville, US
★★★★★ 4
Organizes & is inexpensive.
Color: Silver
Keeps items tucked & organized. Waterfall is not high enough off of sink if sink rises above counter more than an inch. Works fine for the price.
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Reviewed in the United States on May 17, 2026
T
Verified Purchase
TSheldon
Belleville, US
★★★★★ 5
Convenient & organization
Color: Black, Color: Black
Size is Perfect for kitchen sink. It allowed for me to organize all the things laying around on the counter near faucet. Very functional and good value compared to others. The only thing that I would have preferred is to have 2 hooks for the Scrub daddy and lose the dishcloth hanger as I tend to to pull cloth and hanger off when I grab to clean or wipe something down.
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Reviewed in the United States on March 2, 2025
A
Verified Purchase
Amazon Customer
New York, US
★★★★★ 5
Sturdy sponge and soap holder
Color: Black, Color: Black
Sturdy sponge holder, doesn’t slip, water drains from sponges and very easy to clean
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026

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