Official Blumat Distributors For The U.S. Since 1981

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Moisture Monitoring

Accurate moisture monitoring is one of the most important factors in making good irrigation decisions—and it plays a huge role in overall plant health, soil biology, and resource efficiency. We like to use tensiometers, a tool that directly measure the tension in the soil: how much pressure a plant’s roots must exert to draw in water.

Tensiometers display this tension on a gauge using a standardized unit—centibar (cb) or millibar (mbar)—both part of the same pressure scale (just a decimal place apart). This makes it easy to compare readings across different setups and depths.

On this page, you’ll find a variety of tensiometer lengths for measuring moisture at different soil depths, along with accessories for installation, maintenance, and system optimization. 

 

41 products


  • Irrometer Coring Tool Kit-1

    Irrometer Coring Tool Kit

    Description Assemble the coring tip onto the extension sections and the handle by screwing pieces together. Use as many extensions as necessary to make the tool the appropriate depth to position the sensor. Push the coring tool into the soil at the desired sensor location no more than one foot (30 cm) at a time to get to the desired depth. After each insertion of the tool, pull it back out and remove the soil core that has accumulated in the tip. Never rotate the tool counter-clockwise while it is inserted in the ground as the pieces can become unscrewed. Often it can be easier to push on the handle with your waist or knee to improve leverage. Footjacks and "backsaver" handles are available as options that can make installation easier. Once the hole has been made to the desired depth, the sensor can be inserted. Be sure the sensor is firmly seated in the bottom of the hole and backfilled making sure the fill soil is compacted similarly to the surrounding area, as a false reading could be obtained if surface water wicks down through uncompacted soil. Instruction Manual

    $256.99

  • Irrometer Low Tension (LT) Model with Adjustable Auto Vacuum Switch, 12"-1

    Irrometer Low Tension (LT) Model with Adjustable Auto Vacuum Switch, 12"

    Description The IRROMETER Model LT (Low Tension) was designed to operate in coarse sandy soils and non-soil growing media. With a range of 0-40 centibars (cb) or kilopascals (kPa), this instrument is for use in situations where tensions above 30 cb (kPa) are rarely expected. Gauge increments of 1 cb (kPa) provide a benefit where finer resolution near saturation is needed. This model instrument is also well suited for conditions where rapidly changing soil moisture conditions need to be observed. The "Quick-Flo" ceramic tip is colored blue for easy identification. <>Model LT IRROMETERS can be used for manual measurement and tracking of soil moisture status in coarse sandy soils and growing media. When equipped with optional electronic output and data logging equipment, measurement and tracking can be done automatically. The low tension vacuum gauge on this model can be replaced with electronic measurement options, or automatic switching devices which can activate peripheral equipment at desired soil water tension levels. See the "Automation and Output Options" specifications for more details. The Model LT is the best choice for container media such as peat, bark, sand, perlite and vermiculite. It can also be used in any soil when the moisture is being managed close to field capacity. Click here for Irrometer's instruction manual.

    $178.50

  • Sale -20% Blumat Digital Moisture Meter With Cap And Battery

    Blumat Digital Moisture Meter With Cap And Battery

    Blumat Digital Moisture Meter with Cap and Battery Product Description:The Blumat Digital Moisture Meter with Cap and Battery provides accurate soil tension readings in millibar (mbar), helping you determine exactly when to irrigate. Just press the button to instantly see how much moisture is available to your plants. Low numbers (0–50 mbar) mean the soil is saturated Mid-range (50–100 mbar) is ideal for most grow media High readings (200+ mbar) suggest it's time to water This tool is a must-have for managing and troubleshooting Blumat systems with confidence. What’s Included: Blumat Digital Moisture Meter – Instant, real-time soil moisture readings Protective Cap – UV and weather protection for outdoor setups Spare Battery (CR2032) – Ensures you're never caught without power Why It Matters:The spare battery keeps you ready for continuous monitoring, while the protective cap extends the life of your meter outdoors. Be careful not to seat the cap directly onto the soil, as trapped humidity may damage the sensor. Note: The top of the meter is not waterproof. Do not submerge or expose it to standing water.  

    $93.00$74.40

  • Sale -20% Blumat Digital Moisture Meter With Cap, Battery, And Coring Tool

    Blumat Digital Moisture Meter With Cap, Battery, And Coring Tool

    Product Description:The Blumat Digital Moisture Meter with Cap, Battery, and Coring Tool gives you everything you need to monitor and manage soil moisture in challenging environments. It delivers quick, accurate readings in millibar (mbar), allowing you to track water availability and optimize irrigation.  Low numbers (0–50 mbar) mean the soil is saturated Mid-range (50–100 mbar) is ideal for most grow media High readings (200+ mbar) suggest it's time to water This tool is a must-have for managing and troubleshooting Blumat systems with confidence. What’s Included: Blumat Digital Moisture Meter – Displays soil tension at the press of a button Protective Cap – Shields from moisture and UV exposure Spare Battery (CR2032) – Backup for continuous use Coring Tool – Makes a clean hole for inserting the sensor into dense root zones or compact media Why It Matters:The coring tool ensures proper sensor placement in mature or heavily rooted containers. The spare battery keeps you running, and the cap protects the top of the meter in outdoor conditions—just be careful not to seat the cap directly onto the soil, as trapped humidity may damage the sensor. Note: The top of the meter is not waterproof. Do not submerge or expose it to standing water.

    $105.00$84.00

  • Irrometer Standard (SR) Model, 48"-1

    Irrometer Standard (SR) Model, 48"

    DescriptionIrrometer Standard (SR) Model, 48"

    $137.13

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