Moisture Meters
Irrometer Low Tension (LT) Model with Adjustable Auto Vacuum Switch, 6"
Description Switch output provides adjustable automatic vacuum switching capabilities. AVS has a default setting of 30 centibars. https://www.irrometer.com/pdf/Irrometers/101%20IRROMETER-Family-brochure.pdf
$188.82
Irrometer Standard (SR) Model Vacuum Gauge
The IRROMETER was first developed in 1951 to help growers improve irrigation efficiency. It provides the user with accurate information on soil moisture status regardless of soil type. The instrument measures in centibars (cb) or kilopascals (kPa) of soil water tension. This value represents the energy a plant's root system uses to draw water from the soil. Understanding soil moisture activity helps the user make informed irrigation scheduling decisions resulting in improved yield and quality while reducing water, fertilizer, labor and energy costs. Specifications: DIAL SIZE: 2.5 in. (63 mm) CASE: AISI 304 Stainless steel membrane vented case with IP 67 protection degree WINDOW: Polycarbonate with EPDM gasket seal, DIAL: Scale of 0-100 cb (kPa), white with contrasting green markings. ACCURACY: +3-2-3% of span ASME B40.1 Grade B MECHANISM: Bronze Bourdon Tube with brass and stainless steel internals CONNECTION: Standard 1/4 in. NPT- Brass Bottom Mount OPERATING TEMPERATURE: -40° to 150° F (-40° to 65° C), 32° to 150° F (0° to 65° C ) for water service
$32.89
Four Irrometer Low Tension (LT) Models, 6" and Pump Kit
Description Irrometer sensors come made for soil (outside, gardens and farms) and for planting and potting mixes (indoor, greenhouses, and outside beds). This one - best for using with potting mixes - includes two sensors and the parts needed to set it up: a hand vacuum pump, a bottle of Irrometer fluid, 25 monthly chart forms, and a reference book. After setting up the sensors, you can use the pump to remove air from them to ensure maximum sensitivity and accuracy.
$760.24
Irrometer Pressure Gauge 15 psi
This membrane vented pressure gauge allows for superior temperature and elevation related compensation while maintaining a dust proof and waterproof environment.
$36.87
Irrometer Standard (SR) Model, 36"
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.
$137.51
Irrometer Coring Tool Kit
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
$277.55
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.
$192.78
Irrometer Standard (SR) Model, 48"
DescriptionIrrometer Standard (SR) Model, 48"
$148.11
Irrometer Basic Service Kit
A good but less expensive Irrometer service kit. It includes a syringe pump instead of the standard ones used in the other service kits. It also comes with the Irrometer fluid, chart forms, a reference book, and canvas bag.
$30.00
Blumat Digital Moisture Meter Kits
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
$64.80 - $83.20
