เครื่องวัดแรงตึงผิวของดิน
The Veswe Soil Tensiometer operates on the negative pressure principle to measure soil moisture, analyzing water movement from an energy perspective for precise irrigation management. Its transparent PVC tube allows for clear water level monitoring, while the premium clay head at the bottom ensures rapid response, airtightness, and accurate readings.
This industrial-grade sensor is available in two signal output versions: RS485 (Modbus) and 4-20mA. Choose the ideal model to seamlessly integrate with your agricultural monitoring system, ensuring long-term stability and reliable data for research or farm automation.
- Model: VRS-TRZL-&-1-&-EX
- ปริมาณการสั่งซื้อขั้นต่ำ: 1 ชิ้น
- วันที่จัดส่ง: ภายใน 24 ชั่วโมง
- สอบถามราคาตอนนี้
สอบถามข้อมูล: อีเมล: contact@veswe.com | WhatsApp: +8613418148929
Industrial-Grade Precision: Remote Monitoring & Customizable Depth
The Veswe Soil Tensiometer is an industrial-grade device designed for accurate measurement of soil water potential using negative pressure principles. Set against rolling green fields, its transparent PVC tube connects to a stainless steel vacuum gauge and an RS485/4-20mA output head. This soil tensiometer offers four key advantages: remote monitoring for cloud integration, precise measurement (±0.5kPa accuracy), IP67 protection for harsh environments, and customizable lengths (15cm to 120cm+) to match any root zone. Ideal for precision irrigation scheduling and drought stress prediction, this tensiometer for soil provides energy-based metrics that outperform volumetric sensors. Whether you need a simple gauge or a networked tensiometers solution for automation, this device delivers the versatility and scientific accuracy required for modern agriculture.
High-Quality Clay Head: The Heart of Accurate Sensing
Close-up views reveal the porous ceramic tips attached to clear tubes—the critical sensing interface of this soil tensiometer. The text explains: “The clay head is the sensing part… sensitivity depends on water permeability.” Four key features define its performance: high sensitivity to minute suction changes, fast water penetration for rapid equilibration, an airtight seal to maintain vacuum integrity, and a small error margin for consistent readings. Essential for maintaining long-term accuracy, this tensiometer for soil thrives even in saline or compacted soils. The quality of the ceramic head determines whether your tensiometer soil moisture data remains reliable season after season.
Transparent PVC Pipe & Stainless Steel Gauge: Visual Clarity Meets Durability
Highlighting dual-material construction, this soil tensiometer combines functionality with robustness. The transparent PVC tube allows visual observation of the internal water level, enabling fast response speeds and effective perception of the soil environment. Users can instantly verify saturation without tools. The mechanical vacuum gauge, made of corrosion-resistant stainless steel, is suitable for prolonged outdoor use. Its face displays a kPa scale (-100 to 0) with color-coded zones for intuitive field reading. This hybrid design supports both manual verification and automated logging, making it a practical soil tensiometer for growers who value immediate visual feedback alongside digital data.
Smart Chip: Low Power, High Sensitivity, Stable Transmission
Featuring a glowing MCU chip graphic, this soil tensiometer showcases its intelligent signal processing. An imported low-power MCU chip delivers low power consumption (max 0.8W for RS485, 0.5W for 4-20mA), making it ideal for solar or battery-powered stations. High sensitivity captures shifts down to 0.1kPa resolution, while noise-immune signal transmission ensures clean data over long cable runs (up to 2000m for RS485). This smart soil tensiometer enables seamless IoT integration, allowing your tensiometer for soil network to operate reliably even in remote, off-grid locations.
IP67 High Protection Level: Built for Harsh Field Conditions
Showing the sensor half-submerged in splashing water, this soil tensiometer proves its ruggedness. The body is treated with waterproof and dustproof measures, protecting internal components and ensuring normal operation even when buried long-term. The IP67 rating allows deployment in flooded paddies, muddy orchards, or coastal saline soils where lesser enclosures fail. Combined with UV-stable PVC and stainless fittings, this soil moisture sensor for irrigation system withstands seasonal extremes without degradation—ensuring your tensiometer soil moisture data remains consistent year after year.
Measurement Is More Accurate: Unaffected by Salts & Fertilizers
Illustrating the sensor in a grassy soil profile with floating “Salt Ion” bubbles, this soil tensiometer demonstrates immunity to chemical interference. Unlike EC or capacitance probes, tensiometers measure physical water tension, making them uniquely suited for high-salinity greenhouse substrates, compost-amended beds, or reclaimed wastewater schemes where conductivity-based sensors give false readings. As a chemically inert soil moisture probe, it provides accurate data regardless of fertilizers, pesticides, or irrigation water quality. For growers dealing with saline soils, this is the best soil moisture probe you can rely on.
Fast Response Speed: Humanized Design for Easy Maintenance
Diagram labels user-serviceable parts for quick refilling: unscrew the top cap, remove the silicone plug, inject cooled boiled water, and reseat. The transparent shell allows intuitive water level monitoring between refills. No special tools are required—farmers can maintain units onsite within minutes, ensuring continuous data continuity. This humanized design makes it an easy-to-maintain soil moisture sensor probe for busy operations. Whether you’re using it as a tree moisture probe in orchards or a professional soil moisture meter in research plots, upkeep is simple and fast.
Real-Time Reflection of Soil Conditions: Determine Irrigation Needs
Depicting the sensor installed with the gauge visible above ground, this soil tensiometer is ready for immediate interpretation. It determines field or potting soil water suction and provides indicators for irrigation, monitoring soil moisture dynamics including soil water and groundwater. Applications include triggering drip emitters when tension exceeds thresholds, validating evapotranspiration models, and studying capillary rise. This direct insight into plant-available water is more meaningful than % volume alone—making it an essential tool for any soil moisture monitoring system.
Remote Real-Time Monitoring: Web/App Integration for Automation
Displaying dashboard interfaces across desktop, tablet, and smartphone, this soil tensiometer supports remote viewing via web, app, and mini-programs. It links soil conditions to water-fertilizer integrated machines and smart agricultural systems to realize automated irrigation. This enables scalable farm management: connect multiple tensiometers to a central controller, auto-adjust valves based on real-time demand, and reduce labor costs. As a connected soil moisture sensor for irrigation system, it brings the field to your phone—making it the ideal choice for modern irrigation system moisture sensor networks.
Soil Water Potential Reference Guide: Interpret Readings for Action
Four panels provide actionable thresholds based on measured kPa values, serving as a quick-reference chart for growers interpreting gauge readings or configuring software alarms:
Reading Condition Action
-10 ~ 0 kPa Humidity/high moisture Suitable for most crops, but watch for waterlogging
-30 ~ -10 kPa Wet / ideal growth range Majority of plants thrive here
-50 ~ -30 kPa Dry Wet-loving crops need watering soon
< -50 kPa Very dry Most crops require urgent irrigation
This guide bridges the gap between raw data and agronomic action. Whether you’re using a soil ph analyzer alongside your tensiometer or relying solely on this soil moisture sensor irrigation tool, these ranges provide universal guidance. For any soil sensors for agriculture setup, understanding these thresholds transforms your soil moisture data into confident irrigation decisions.
About - Soil Tensiometer
The soil tensiometer can accurately give an irrigation point. Clearly inform the grower whether the plants are short of water, how often they will be short of water, and how often they will be irrigated. Thereby improving the product and quality of crops.
คำอธิบาย
This soil tensiometer is a common device used for measuring soil moisture in agricultural irrigation, providing growers with a cheap and reliable method of measuring soil moisture. The measurement process is not affected by soil salinity and does not require on-site calibration, which is very convenient. Our RS-TRZL-*-1-*-EX soil tension meter has measuring depths of 15cm, 30cm, 45cm, 60cm, 75cm, 90cm, 105cm, 120cm, etc., and supports customer customization. The overall appearance is composed of high-quality transparent PVC pipes and clay heads, which can visually display the soil moisture content. Renke soil tension sensor has two output types, RS485 and analog. The analog output is 4-20ma.
Soil Tensiometer Parameters
| แหล่งจ่ายไฟ | 10~24V DC |
| การใช้พลังงาน | 0.5W (4-20mA), 0.8W (RS485) |
| Component temperature resistance | 0~80°C |
| ช่วงการวัด | -100kPa-0 |
| ความถูกต้อง | ±0.5kPa (25°C) |
| การแก้ไขปัญหา | 0.1kPa |
| Casing material | transparent PVC tubing |
| ระดับการป้องกัน | IP67 |
| สัญญาณขาออก | 4-20mA/RS485 |
| เวลาตอบสนอง | 200ms |
คุณสมบัติ
- The shell is made of transparent PVC plastic pipe, which can directly observe the water level, has a fast response speed.
- The high-quality clay head is fast and airtight.
- Not affected by salt ions in the soil, agricultural activities such as chemical fertilizers, pesticides, and irrigation will not affect the measurement results, and the data is accurate.
- Support 10-24V wide voltage power supply, support standard Modbus-RTU485 communication mode, the longest communication is 2000 meters, and also support 4~20mA current signal output.
use
How to use the soil tensiometer?
- Prepare cooled, boiled water (ensure the water is free of dissolved air). Boil tap water for 20 minutes, then allow it to cool and set aside.
- Expel air from the porous clay tip. Unscrew the top cover, remove the silicone plug, and fill the porous clay tip completely with the cooled, boiled water. Keep the tensiometer upright for 10–40 minutes (do not replace the cover). When water begins to drip from the surface of the porous clay tip, reinsert the silicone plug. Wrap the porous clay tip with tissue to absorb excess water so that the soil tension reaches approximately −40 kPa. If air bubbles rise, gently shake the instrument to help purge the air. Repeat this process 2–3 times.
- Immerse the porous clay tip in water. When the soil tension recovers to within −10 kPa, refill the device until full, insert the silicone plug, tighten the top cover, and the instrument will be ready for use.
How to maintain the soil tensiometer?
- Keep the porous clay tip free of oil contamination to avoid clogging the micropores, which may cause instrument failure.
- The instrument’s measurement range is −100 kPa to 0 kPa; exceeding this range may cause the porous clay tip’s tube wall to rupture and leak, rendering the instrument unusable.
- Check regularly and refill with cooled, boiled water approximately every two weeks to one month (or when the water level falls near the top of the air-collection tube). Do not loosen the sensor during refilling.
- If ambient temperatures are expected to fall below 0 °C, retrieve any outdoor instruments to prevent freezing damage.
FAQs - Soil Tensiometer
Soil tension is the soil water potential, which is an index of soil moisture intensity. Its size is closely related to the fluidity and penetration depth of soil moisture, the effectiveness and difficulty of plants to absorb soil moisture. At the same time, it can indirectly reflect soil moisture. Generally speaking, the lower the soil moisture, the greater the soil tension, and the stronger the water suction, making it difficult for plants to absorb water in the soil. The greater the soil moisture, the weaker the soil’s suction power for water, and the easier it is for crops to absorb water from the soil.
A soil tensiometer is an instrument that measures soil water tension (or matric potential), which indicates how strongly water is held in the soil and how difficult it is for plants to extract it.
- The soil tension is composed of a pressure gauge, a PVC pipe and a ceramic probe. After the PVC pipe is filled with water, the ceramic probe is moist and can prevent external air from entering the ceramic probe. When there is a pressure difference between the water potential of the tested soil and the tensiometer, the water in the tensiometer penetrates into the tested soil until it reaches an equilibrium state. At this time, the value displayed by the pressure gauge is the water potential of the tested soil.
- Use a 20 mm soil auger, keeping it vertical to the ground. Hold the handle firmly with both hands and press down while slowly rotating clockwise. (Note: Do not apply excessive force. Rotate slowly and make more turns to prevent the hole from tilting.)
- Remove the auger from the hole and collect the extracted soil in a bucket. This soil will be used later to prepare the slurry.
- Repeat the above steps of drilling and soil collection. During this process, gently lower the sensor into the hole (without forcing it to the bottom) to test whether the depth is appropriate. If the sensor gets stuck, use the auger to adjust the hole, ensuring smooth insertion and removal. Continue until the hole depth matches the installation mark on the sensor. At this point, hole drilling is complete.
- Prepare the slurry. Remove impurities such as stones, roots, and large, hard-to-dissolve clods from the soil. Break the soil into finer particles, add an appropriate amount of water, and stir thoroughly until a viscous paste is formed. For loam, the slurry should not be thicker than the consistency of tahini. The slurry is now ready.
- Slowly pour the slurry into the hole until it is about half full (adjust as needed). Then gently insert the sensor into the hole, rotating it in one direction while pressing down slowly.
(Note: If inserted too quickly, air bubbles may not be fully expelled. Do not pull the sensor upward during the process to avoid reintroducing air into the hole.) - When the sensor reaches the correct installation depth (the zero mark flush with the ground surface), some slurry will overflow around the device, indicating proper grouting. (Note: Remove excess slurry within 3 cm around the sensor to prevent clumping, which may interfere with water infiltration.)
1. Install the device after crop sowing.
2. Choose a location with flat terrain.
3. Under full-field irrigation, prioritize areas receiving relatively less water as monitoring sites. Under localized irrigation, select a spot within the irrigated zone.
4. Select a location where crop growth is uniform and representative of the majority of crops.
5. Consider the root distribution of the monitored crop; generally, choose a spot close to the crop’s water-absorbing roots.
Note: The soil tensiometer should be installed at a relatively elevated location to prevent rainwater backflow into the device, which may cause short circuits or circuit failures.
4~20 mA Output
Yellow wire: Power positive (10–24 VDC)
White wire: 4–20 mA signal output
RS485 เอาต์พุต
Brown wire: Power positive (10–24 VDC)
Black wire: Power negative
Yellow (or green) wire: RS485-A
สายสีฟ้า: RS485-B
Tensiometers indirectly measure soil moisture tension. After the tensiometers are installed, they can provide readings at the same location for a long period of time. Tensiometer readings are easy to interpret and indicate the soil moisture conditions experienced by plant roots. Soil salinity does not affect the reading.
- Precision irrigation scheduling
- Agricultural water management
- Greenhouse and horticulture monitoring
- Research on soil-plant-water relationships
A two-year warranty is provided for use in a normal environment.
ความรู้ในอุตสาหกรรม
3 อันดับประเภทของพารามิเตอร์คุณภาพน้ำ | เซ็นเซอร์ตรวจสอบคุณภาพน้ำ Veswe
ติดต่อเรา
เพื่อนร่วมงานของเรา: แจ็ค
โทรศัพท์/Whatsapp: +86 13418148929
อีเมล: contact@veswe.com
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