Product description: Surface runoff is the flow of water that occurs when excess water from rain, meltwater, or other sources flows over the earth's surface. This might occur because soil is saturated to full capacity, or because rain arrives more quickly than soil can absorb it. Surface runoff is a major component of the water cycle. It is the primary agent in soil erosion by water. QT series tipping bucket flowmeter can be used to monitor no-pressure, low-head, and small discharge flow of surface or underground runoff.
Product description: surface runoff is the flow of water that occurs when excess water from rain, meltwater, or other sources flows over the earth's surface. This might occur because soil is saturated to full capacity, or because rain arrives more quickly than soil can absorb it. Surface runoff is a major component of the water cycle. It is the primary agent in soil erosion by water. Qt series tipping bucket flowmeter can be used to monitor no-pressure, low-head, and small discharge flow of surface or underground runoff.
Features
Stainless steel, suitable for long-term use in extreme environment
Data logger achieves nema 6 and ip67 standard, suitable for outdoor use
Power supply is simple, cr-2032 3v lithium battery, no need of solar panel and storage battery
Suitable for monitoring of surface runoff and underground runoff
Qt-wm series handheld weather station is a mini instrument with multiple functions. It is used to measure wind speed, air temperature, humidity, altitude, dew point, barometric pressure, etc. With lcd displays, they are foldable, portable and easy to use.
Technical parameters
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
Product description: QT-SM101 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 temperature is measured via high-precision thermistor. Soil moisture and temperature 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 analysis
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.
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
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
