tdr 100 soil moisture meter TDR Soil Moisture with Probes – Boston Instruments
SKU: 1311720672
tdr 100 soil moisture meter

tdr 100 soil moisture meter TDR Soil Moisture with Probes – Boston Instruments

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Description

tdr 100 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: 1311720672

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sofi saint claire
Omaha, US
★★★★★ 5
Enjoyable to drink
Size: 2.32 Pound (Pack of 1), Style: New
Goood texture
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Reviewed in the United States on May 30, 2026
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Ryan Burns
Whiting, US
★★★★★ 5
Lost Eight Pounds!!!
Size: 2.32 Pound (Pack of 1), Style: New
I mix two spoonfuls in a glass of orange juice every morning. In the past month I've lost eight pounds doing nothing different. Great product!
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Raquel
Boise, US
★★★★★ 5
Won’t go a day without it
Size: 2.32 Pound (Pack of 1), Style: New, Size: 2.32 Pound (Pack of 1), Style: New
So much better than the sugar version which has SOOOO much sugar it gave me heartburn. Yes, the sugar version is tasty like Tang, but that sugar gave me indigestion. The aspartame version was disgusting. This Stevia is awesome. Because it doesn’t have tons of sugar, you only need 2 heaping teaspoons instead of 2 tablespoons of the regular. I think it’s delicious and also has natural coloring, the sugar version has artificial dyes. I drink it everyday and my GI tract has never been happier. Only one small issue, this size container (~14 oz) is narrow, so buy the bigger bottle (23 or 34?) so you can reach in to scoop it easily. I have zero bloating or gas and sometimes take it more than once per day. It supposedly decreases appetite if taken before meals. It expands in your gut! Perfect. Just don’t take it within 2 hours of oral meds/vitamins as it can supposedly decrease gut absorption. Enjoy the results!!
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Reviewed in the United States on July 3, 2025
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Anna Z
Whiting, US
★★★★★ 4
Lower Cholesterol and Better Digestion, Even if the Taste Takes Getting Used To
Size: 2.32 Pound (Pack of 1), Style: New
I started using this fiber supplement after my doctor recommended it to help manage my cholesterol. I like that it’s plant-based and sugar-free, and it’s easy to mix into water. After taking it regularly, I’ve noticed a positive impact on my digestion, and I’m hopeful it will help with my cholesterol in the long run. The only thing is that the taste and texture aren’t quite what I expected — it’s a bit like protein powder. Still, the health benefits make it worth continuing
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K. Hansen
Fort Morgan, US
★★★★★ 5
Good taste
Size: 2.32 Pound (Pack of 1), Style: New
Tastes like tang. Take daily to reduce cholesterol.
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Reviewed in the United States on February 25, 2026

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