Product description: Equilibrium tensiometer is a new revolutionary soil water potential meter which has patent protection. Soil water potential is measured as potential energy per unit quantity of water under isothermal conditions, its unit is bar (1 bar = 100kPa). In the soil, water potential is a major factor in determining the direction and speed of water flow, which is the only index of the effectiveness of soil moisture to plants. The water potential of different soils can be compared with each other directly. Accurate determination of soil water potential has very important significance for the research on the flow of soil water, drought resistance of plants, automatic control of water-saving irrigation, soil moisture monitoring, etc.
QT-EQ15 Soil water potential meter
Principle
EQ15 equilibrium tensiometer consists of two parts: equilibrium sensor and moisture content sensor. The equilibrium sensor is made of a special material which owns two characteristics: stable relationship between water content and water potential, high water permeability. Good permeability can ensure water potential changes simultaneously with soil water content. Moisture content sensor measure the water content of equilibrium sensor all the time. Because the relationship between water content and water potential is known, soil water potential can be calculated based on soil water content. Moisture content sensor is fixed in the equilibrium sensor, thus the changes of ambient environment (Soil density, gravels, root systems, etc.) around the probe have no effect on the measurement results.
Comparison with traditional soil water potential meter
The current soil water potential meters on the market and their measuring principles have several shortcomings in some aspects, such as measurement accuracy, measurement range and stability in measurement. Apparently those soil water potential meters cannot completely meet usersâ?? requirements. The traditional tensiometer usually has a small measurement range (-0.8~0bar), and it can be used only in moist soil and damaged easily; Psychrometer can be heavily affected by the temperature change and its measurement accuracy is low and not suitable for outdoor use. Gypsum blocks has low measurement precision, low stability, and can get significantly affected by soil pH
Equilibrium tensionmeter has irreplaceable advantages
Wide measurement range, Including the full spectrum of water potential for plant survival
High precision, measurement error is less than 5k Pa
Easy to use, no need of any maintenance and repair, completely suitable for long-term outdoor use
Measurement accuracy is not affected by soil properties (except alkaline soils)
Multiple probe connections to the data logger
Product description: The QT-SM01 is a soil moisture meter, consisting of a soil moisture sensor and a portable data logger. It can apply to agriculture, forestry, environmental protection, water conservancy, meteorology and other sectors for soil moisture monitoring, irrigation, greenhouse control and precision agriculture. The meter can be used to rapidly measure the moisture of various types of soils at upper and lower layer. It is able to meet the requirements of soil moisture monitoring, scientific research, production and teaching, etc. Technical parameters Moisture sensor: cylindrical PVC waterproof probe with four 6 cm long stainless steel probe, it can be also kept in the soil for a long term observation at a fixes position or and on-line measurement Extension rod for moisture sensor: length 80cm Measurement range: 0~100% Vol Accuracy: ±3% (0~60% Vol), ±1%(after calibration) Response time: < 0.3 s Storage module: software included, more than 12,000 data, no data lost when power failure Data display: LCD with backlight, shutdown automatically, power-saving mode Power supply: 8.4V rechargeable lithium battery, charger included Communication interface: RS232 Battery life: continuously for 48 hours in frequent use Standard configuration QT-SM01 soil moisture meter includes soil moisture sensor, portable data logger, USB cables, portable case, charger, software, manual and extension rod. Origin: China
Product description: QT-SM100 soil moisture meter is based on TDR (Time domain Reflectometry) technology, it can be used to rapidly measure the moisture of various types of soils. By measuring the dielectric constant of soil or other media, the meter can calculate soil water content, because soil water content is closely related to the dielectric constant. Soil moisture data can be transmitted to a handheld Android terminal by WIFI. Feature GPS coordination can be recorded Record data Automatically or manually Wireless data transmission via Wi-Fi Recognize sensors by two-dimensional code Automatically recognize connected sensors Terminal memory card is up to 32G Display real-time data and curve of recorded data Export data to Excel for analysi
Product description: QT-PH350 is a sophisticated but durable pen-like pH meter with independent electrodes. It can be used for several years if it is operated correctly. Features Standard accessories include detachable pH test pen, pH electrode and pH 4, pH 7 standard solution Nib type pH electrode is the ideal probe for measuring permeable object, such as soil, meat, cheese etc., the electrode is embedded in a solid glass pen Detachable pH probe can be used for regular or remote measurements Automatic calibration with pH 4, 7,10 standard solutions Rotation display button Data Retention Auto power-off Small and lightweight Waterproof panel Applications Agriculture, horticulture, food processing, teaching, industrial and quality management Specifications Data reader Screen 20 mm x 28 mm LCD with rotation display function Measurement range 0~14 Resolution 0.01pH Accuracy ±0.07(5~9) ±0.1 (4~4.9, 9.1~10) ±0.2 (1~3.9, 10.1~13) (23±5â??, calibration values) Input impedance 10~12 ohms Temperature compensation Not necessary Sampling time About 0.8 s Data Retention Freeze the current display data, convenient for reading Calibration Automatic calibration with pH 7, 4 or 10 standard solutions pH electrode connector BNC interface Operating Temperature 0~50â??(32~122â??) Operating humidity
Product description: QT-ML3 portable soil moisture/temperature meter can be used for the measurement of moisture of various types of soil and media, and it can be used as a basic tool for on-site observation or mobile measurement. Principle Using FDR (frequency domain reflectometry) principle, the sensor emits electromagnetic wave with a certain frequency, the waves transmit along the probe till they reach the bottom of the probe and return to the sensor, the output voltage is recorded. Because the dielectric constant of the soil usually depends on the soil moisture, the soil water content can be calculated according to the relationship between the output voltage and soil moisture. Feature GPS coordination can be recorded Record data Automatically or manually Wireless data transmission via Wi-Fi Recognize sensors by two-dimensional code Automatically recognize connected sensors Terminal memory card is up to 32G Display real-time data and curve of recorded data Export data to Excel for analysis
Product description: the qt-aqua soil moisture/temperature meter can be used for the measurement of soil volumetric water content based on the advanced tdr principle. The electrical signal can be directly output, and the soil volumetric water content and soil temperature can be shown directly. The meter can be widely used in agricultural production, scientific research, etc because of its low cost. Feature Gps coordination can be recorded Record data automatically or manually Wireless data transmission via wi-fi Recognize sensors by two-dimensional code Automatically recognize connected sensors Terminal memory card is up to 32g Display real-time data and curve of recorded data Export data to excel for analysis
Product description: QT-PH06S/30S is a durable soil pH meter, it can be inserted into soil and measure soil pH rapidly. No batteries and no special maintenance needed for the meter. Specifications QT-PH06S QT-PH30S Measurement range pH: 3~8; soil moisture: 10~80% Resolution 0.2 Accuracy 0.2 (Suitable for arable land and teaching experiment) Operating temperature 5-50 Probe length 6cm 30cm Configuration pH Meter, manual, portable carrying box Soil pH is very important to crop growth. Most of crops can hardly survive when soil pH is too high or too low. The appropriate pH is critical to the quality of crops.
Product description: QT-PICO can be used to rapidly measure soil moisture in the upper layer, it can also work with extension rod to measure deep soil moisture. After calibration, it can measure soil salinity at the same time. Principle QT-PICO soil moisture and temperature meter is based on TDR (Time domain Reflectometry) technology. It can directly measure the dielectric constant of soil or other media. According to the relationship between the dielectric constant and soil moisture, soil water content can be derived from the output voltage. When the meter is operating, it first produces 1GHz high frequency electromagnetic waves, then the waves transmit along the conductor and generate an electromagnetic field around the probe. When the waves reach the end of the conductor, they return to the source. The duration of transmission is between 10 ps and 2 ns. The meter is very sensitive and it can detect the time signal as short as 3 ps. The time sampling method makes soil moisture measurements become more accurate and convenient.
Http://www.Channeleco.Com/en/item/show.Asp?m=1&d=1195 Product description: a reasonable assessment of water balance and evapotranspiration is an important part of hydrological cycle; a lysimeter is a useful tool to evaluate the use of water in the soil, water storage and transfer in the same location. Qt-3051 series lysimeter can apply to laboratory for the study on parameters relevant to water balance. To make calculation easy, the height of column barrel of this system is designed to 300 mm, 600 mm, 1200 mm respectively, other height can be customized. The system uses state-of-the-art high-resolution weighing system, high-precision soil moisture and water potential sensor to ensure the accurate measurement of the entire system. Applications The lysimeter system can be used in many area, such as water characteristic curve, ecological restoration, small-scale simulation experiment, fluidity of soil water, soil mass transfer, soil absorption and buffering, water balance analysis, leachate analysis, groundwater recharge analysis, mass migration, material transformation research, farming method research, climate research, energy balance studies, correction of simulation experiment, water flux studies, simulation studies on groundwater recharge, determination of the leachate and so on. Measurement parameters Soil column weight Soil water potential Soil moisture Soil temperature Data acquisition Basic input: 8 differential analog channels Channel extension: am16/32 channel expansion module, 32 differential analog channel Storage capacity: 4m memory card
Soil ph and moisture meter Range: ph 3 - 8 ph Moisture: 1 - 8 Most crops cannot survive in too acid or too alkaline soil. Get the right ph reading for your crop is very important. 60x45x35cm/100pcs , 18kg
