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 Soil Moisture Meter With Cap

    Blumat Digital Soil Moisture Meter With Cap

    83 reviews

    Product Description:The Blumat Digital Moisture Meter with Cap is a soil moisture tensiometer that displays readings in millibar (mbar), letting you instantly see how much effort plant roots need to access water. Just tap the button for a real-time reading—no calibration or setup required. 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 – Measures soil moisture in real time Protective Cap – Shields the sensor from UV and moisture for outdoor use 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. Reset Your Meter!Click here for instructions.    

    $77.00

  • IrroCloud Monitor IC-10-IR

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

    Description 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 Pump Service Kit-1

    Irrometer Pump Service Kit

    Description Service Units are designed to aid users in the placement and installation, interpretation of readings, and maintenance of IRROMETER soil moisture indicators. Several helpful items are included in the kit. The primary component of a Service Unit is a small hand vacuum pump. The pump is designed to seal on the reservoir portion of the instrument body and is used to create a vacuum manually, evacuating any air contained in the tensiometer. These instruments function with the greatest accuracy when all air has been removed. One Service Unit will service multiple instruments. The Pump Service Unit is different in that it includes a pump with an integral vacuum gauge that registers in centibars (cb) or kilopascals (kPa). This is used to validate accuracy of the gauge on the IRROMETER being serviced. Click here for Irrometer's instruction manual.  

    $115.00

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

    Irrometer Low Tension (LT) Model, 6"

    Description 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

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

    Irrometer Low Tension (LT) Model, 18"

    1 review

    Description 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

  • Digital Moisture Meter Cap-1

    Digital Moisture Meter Cap

    4 reviews

    Description A cap to protect your digital meter top

    $4.97

  • Blumat Digital Moisture Meter - Top Replacement Only

    Blumat Digital Moisture Meter - Top Replacement Only

    3 reviews

    Description 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.

    $85.32

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

    Irrometer Low Tension (LT) Model, 12"

    Description 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

  • Digital Meter Battery-1

    Digital Meter Battery

    1 review

    Description Battery for Blumat Digital Meter

    $2.04

  • Irrometer Tensiometer Fluid (1 oz.)-1

    Irrometer Tensiometer Fluid (1 oz.)

    Description 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

    Description 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

  • Irrometer Standard (SR) Model, 12"-1

    Irrometer Standard (SR) Model, 12"

    Description OPERATING PRINCIPLE: The IRROMETER operates on the tensiometer principle, which measures soil water tension. Soil water tension is the energy (vacuum) applied to soil by the plant as it draws in water for nutrition. This force is measured in centibars (cb) or kilopascals (kPa) of tension with a high reading indicating the dry end of the scale and a low reading indicating the wet end of the scale. The IRROMETER instrument consists of a sealed, fluid filled tube that is equipped with a porous ceramic tip and a special vacuum gauge. They are installed in the ground with the tips placed at desired root zone depths. As the soil dries (increasing tension), fluid is drawn out of the instrument. This reduces the fluid volume in the IRROMETER, thus creating a partial vacuum which is registered on the gauge. The drier the soil, the higher the gauge reading. An irrigation application or rainfall event reverses this action. As water flows back into the soil (and the IRROMETER), tension is relieved in the soil and the instrument, resulting in a lower gauge reading (lower tension). In effect, the instrument is indicating how hard the roots are working. Due to the IRROMETER’s unique principle of operation, no calibrations are necessary under normal operating conditions for different soil types. A gauge reading of 50 cb (kPa) indicates that the roots are extracting the same amount of moisture whether the crop is planted in sandy soil or clay soil. Click here for Irrometer's instruction manual.

    $119.19

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