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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Arisdalia Freyre
Grantham, US
★★★★★ 5
Super combo
Obtendrás un skincare completo con estos productos de the ordinario. Buena calidad y resultados
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Reviewed in the United States on November 16, 2025
A
Verified Purchase
Abbi Cooperman
Carnegie, US
★★★★★ 5
It works
With consistency it really helps keep my complexion fair and consistent. Feels nice to sleep in as well.
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Reviewed in the United States on February 9, 2025
L
Verified Purchase
Lorraine Richardson
Natrona Heights, US
★★★★★ 1
Not worth the money
I've been using now for 3 weeks. I see absolutely no change in anything. No brightness, no hydration no rank or reduction.This doesn't work television forest on the hills of that.I don't work on anything. I will continue using can we change my review if I see any results.
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Reviewed in the United States on June 22, 2025
C
crazy99_x
Draper, US
★★★★★ 5
Gentle serum with nice ingredients
This serum is a milky white color that is a mediun texture (not watery, and not super thick) and spreads well and easily. It absorbs pretty quickly, and doesn't leave me too sticky after, nor has it caused any irritation in over a week of daily use. I also haven't noticed any difference yet in terms of brightening or wrinkle reduction, but 1) know that this can take up to 12 weeks with astaxanthin, and 2) already use niacinamide and vitamin c and have probably already seen as much progress as I can expect in the way of evening out skintone and reducing the appearance of freckles. In English, it says there are only 6 ingredients, but given the avaialable concentrations on the box (4.3% niacinamide, 0.01% astaxanthin) that doesn't make sense. The full ingredients list is only in Korean, but after using an online image translator can see that both lists include great ingredients that have all proven to be quite effective and are gentle for sensitive skin. I also really appreciate that it has the percent niacinamide on the box because this is a staple ingredient for me and so many products have it that it's nice to be able to know how much I'm using when I combine differemt serums and moisturizers that include it so that I'm in the zone that's best for my skin and not using too much.
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Reviewed in the United States on May 28, 2024
E
Emilie
Los Angeles, US
★★★★★ 4
lightweight, did not irritate my skin
I have been using this ampoule for about 3 weeks now and I like how it makes my skin feel. It doesn't feel harsh, my skin didn't seem to mind it because it didn't look or feel irritated after the 3 weeks of use. I am not solely using this product as my night time moisturizer but it is an addition to my other moisturizer. It is easy to apply, doesn't feel heavy, sticky, or tacky. I can't say how this works for existing blemishes and imperfections because I am mainly using this as a prevention. I recently had some of my sun spots laser-ed so I am trying to keep any additional sun spots from appearing again, which is why it is so important for me to keep up with the prevention routine. This product is excellent for that. I did take a look at the ingredients list and while I'm fine with most of it, I did notice there is a silicone in this. I try to avoid silicones but I'm not going to say it is a dealbreaker. All in all I like this product and will keep using this until I'm done with the entire bottle. I didn't see the ingredients list posted on this page yet so here it is, in case you need to see what's in this serum before making the decision to purchase. Ingredients: Water, Butylene Glycol, Phenyl Trimethicone, Niacinamide, Tranexamic Acid, 1,2-Hexanediol, Caprylic/Capric Triglyceride, Polyglyceryl-6 Dicaprate, Arginine, Carbomer, Ethylhexylglycerin, Adenosine, Astaxanthin(100000ppb), Melia Azadirachta Flower Extract, Melia Azadirachta Leaf Extract, Betaine, Ocimum Sanctum Leaf Extract, Corallina Officinalis Extract, Coccinia Indica Fruit Extract, Curcuma Longa (Turmeric)Root Extract, Ascorbic Acid, Tocopherol, Thioctic Acid, Thermus Thermophillus Ferment, Glycerin, Potassium Sorbate
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Reviewed in the United States on May 29, 2024

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