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. 

 

39 products


  • Blumat Digital Moisture Meter Kits

    Blumat Digital Moisture Meter Kits

    1 review

    Description Get reliable soil moisture readings in seconds. The Blumat Digital Moisture Meter is purpose-built for potting soil, giving you consistent results you can trust. Unlike cheap probes or finger tests, it delivers accurate, repeatable readings instantly. Whether you’re managing a Blumat system or simply want healthier plants, this is the tool that takes the guesswork out of watering and helps you maintain the soil sweet spot for healthier, more resilient plants. Available Options Choose the setup that fits your needs: Meter Only – Base unit for reliable soil moisture readings. Meter + Protective Cap – Adds UV and moisture protection for outdoor use. Meter + Protective Cap + Battery – Includes a spare CR2032 3-volt battery so you’re never caught without power. Complete Kit (Meter + Cap + Battery + Coring Tool) – Full field kit with the Blumat Coring Tool (1" wide, 11"+ long) for precise sensor installation and low-impact soil work. Notes The top of the meter is not waterproof. Do not submerge or expose it to standing water. Protective cap should not be seated directly into soil, as trapped humidity can damage the sensor. Reset Instructions Click here for instructions. Video

    $77.00 - $91.00

  • Voltage Irrometer 12"-1

    Voltage Irrometer 12"

    Information you can use, when you need itMeasure the soil moisture available for your plants and automatically transmit to an IrroCloud Monitor. This tensiometer measures moisture levels in centibars and gives you the same information as typical analog versions you have to see in person. You can hook up to 6 of these to every IrroCloud Monitor and see the data on your smart phone, desk computer, or laptop anywhere in the world. The user-friendly IrroCloud software lets you see the  data in many ways—graphs, averages, individual sites, rain events, and several other useful configurations, turning the data into actionable information.

    $170.10

  • IrroCloud Monitor IC-10-IR

    IRROMETER Company, Inc. IrroCloud Monitor IC-10-IR

    Real-time, accurate data showing you the moisture levels at each sensor in your system - too wet, too dry, or just right! It not only gives you the here-and-now information but also has an adjustable timeline for historic and/or specific dates and times. For example, you can start with a 3-month graph and then zoom in on any day and time.Although very simple, easy to use and interpret, it still provides vital, accurate, and critical information. It even tells you how many hours and minutes your irrigation system was on as well as rain gauge information (if you get that option).The four C batteries that normally last more than 2 years power the IrroCloud which connects with up to 6 Voltage Irrometers for soil moisture readings. These sensors report directly to the IRROcloud platform without any need for additional gateways or devices. If not the most, at least one of the most simple, affordable, and reliable solutions for automatically collecting sensor data and storing it in the cloud, for quick access at any time. Since the IrroCloud doesn't require an external power source or even a solar panel, you can easily install it in even the most challenging fields and orchards.The IRROcloud web application provides an intuitive interface with a quick reference dashboard and graphing suite.

    $1,048.95

  • Irrometer Watermark Soil Moisture Sensor, 15'-1

    Irrometer Watermark Soil Moisture Sensor, 15'

    Standard WATERMARK Soil Moisture Sensor. For use with all crops. To be used with WATERMARK Meter, Monitor, Voltage Adapter or a compatible device. Reads electrical resistance in 0-200 centibar (cb) and kilopascal (kPa) range. Comes standard with half inch stripped and tinned ends. 15' (4.5 m) length This sensor consists of a pair of highly corrosion resistant electrodes that are embedded within a granular matrix. A current is applied to the WATERMARK to obtain a resistance value. The WATERMARK Meter or Monitor correlates the resistance to centibars (cb) or kilopascals (kPa) of soil water tension. The WATERMARK is designed to be a permanent sensor, placed in the soil to be monitored and "read" as often as necessary with a portable or stationary device. Internally installed gypsum provides some buffering for the effect of salinity levels normally found in irrigated agricultural crops and landscapes. Click here for Irrometer's instruction manual.

    $71.45

  • Irrometer Low Tension (LT) Model, 18"-1

    Irrometer Low Tension (LT) Model, 18"

    1 review

    The IRROMETER Model LT (Low Tension) tensiometer 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. 

    $137.53

  • Blumat Digital Moisture Meter - Top Replacement Only

    Blumat Digital Moisture Meter - Top Replacement Only

    4 reviews

    The Blumat Digital moisture meter is a super accurate water moisture reader that measure the moisture content of your plant at root level. This is the replacement top for the moisture meter and is great for making an old item brand new!DO NOT WET THE DISPLAY. Moisture can cause damage to the LCD display. If using outside or in conjunction with hand-watering or foliar feeds, use our cap here.

    $66.00

  • Digital Moisture Meter Cap-1

    Digital Moisture Meter Cap

    4 reviews

    A cap to protect your digital meter top

    $4.97

  • Irrometer Low Tension (LT) Model, 12"-1

    Irrometer Low Tension (LT) Model, 12"

    1 review

    The IRROMETER Model LT (Low Tension) tensiometer 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.  

    $132.23

  • Irrometer Low Tension (LT) Model, 6"-1

    Irrometer Low Tension (LT) Model, 6"

    The IRROMETER Model LT (Low Tension) tensiometer 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.    

    $162.29

  • Digital Meter Battery-1

    Digital Meter Battery

    1 review

    Battery for Blumat Digital Meter

    $2.04

  • Irrometer Tensiometer Fluid (1 oz.)-1

    Irrometer Tensiometer Fluid (1 oz.)

    1 oz. bottle of concentrated dye for coloring water. To prepare IRROMETER Field Solution: Add a capful of this concentrate to 1 gallon of distilled water in a clean container. Fill IRROMETER with Field Solution as recommended (See Reference Book) Harmless to roots and skin

    $6.25

  • Irrometer Miniature Low Tension (MLT) Model-1

    Irrometer Miniature Low Tension (MLT) Model

    The IRROMETER Model MLT (Miniature Low Tension) tensiometer was designed for use in small containers commonly used in greenhouses and nurseries. Its compact design and short insertion depth of 4.75 inches (12 cm) allows the MLT to be installed in smaller growing vessels. 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 Click here for Irrometer's instruction manual.

    $88.69

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