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The universal battery-powered telemetry terminal is an intelligent device based on 4G, 5G, and NB-IoT networks for data collection, remote transmission, analysis and calculation, and over-limit alarm. It has the characteristics of low power consumption and IP68 waterproof. It can be adapted to various sensors such as water level, water temperature, and water quality, and has a dual-interface design (expandable). The terminal is equipped with a large-capacity battery and is particularly suitable for monitoring sites with no power supply conditions, high frequency of data reporting (high real-time requirements), and high requirements for waterproof and dustproof.

The Groundwater Remote Data Logger is made of stainless steel, which is strong and corrosion-resistant. It is fully suitable for use in humid environments. Even if it is soaked in water for a short time, it will not cause any problems. Integrated wireless remote transmission module, supports 2G/3G/4G/NB-IoT/LTE-M/LoRa communication mode (optional). Integrated real-time clock (RTC) and battery capacity/voltage self-test and other functions

Compact pressure sensor, output analog signal, with high accuracy and long-term high stability, available in two versions: absolute pressure and gauge pressure (optional). The sensor startup time is only 5 milliseconds, which is very suitable for real-time water level monitoring needs. The stainless steel diaphragm reliably protects the monocrystalline silicon measuring cell from the influence of the measuring medium. The long-term stability of the steel diaphragm ensures the accuracy and stability of the sensor.

High-precision pressure sensor, a digital sensor based on a stable piezoelectric inductive transducer and microprocessor electronics (integrated 16-bit A/D converter). The temperature dependency and nonlinearity are precisely compensated by the mathematical model built into the microcontroller, which ensures a higher accuracy of the pressure data. The sensor has an RS485 output and an adjustable analog signal output (integrated D/A converter). Lightning protection is optional according to customer needs.

Digital pH sensor, based on electrochemical principle, uses a linear measuring electrode that is sensitive to changes in the pH value of the medium and a reference electrode with a constant potential to achieve online measurement of pH value. The sensor uses an industrial-grade electrode core with temperature compensation to achieve temperature compensation and digital signal conversion functions, RS485 output, standard MODBUS RTU protocol, and supports various terminal networking.

Digital ORP sensor, based on electrochemical principle, uses a linear measuring electrode that is sensitive to the change of the medium ORP value and a reference electrode with a constant potential to achieve online measurement of the ORP value. The sensor uses an industrial-grade electrode core, built-in digital signal conversion and other functions, RS485 output, standard MODBUS RTU protocol, and supports various terminal networking.

Digital DO sensor, based on the principle of fluorescence quenching, the sensor covers the detection head (fluorescent membrane cap) with a layer of fluorescent material, the LED light source in the sensor emits blue light to the fluorescent material on the surface of the head (fluorescent membrane cap), the fluorescent material is excited to release red light, the higher the dissolved oxygen concentration, the shorter the time from emitting blue light to releasing red light, the dissolved oxygen meter sensor calculates the dissolved oxygen concentration in the medium by using the correlation between the red light release time and the dissolved oxygen concentration (release time). The sensor has built-in temperature compensation and standard RS485 output, which can be connected to various terminals.

Digital DO sensor, based on the principle of fluorescence quenching, the sensor covers the detection head (fluorescent membrane cap) with a layer of fluorescent material, the LED light source in the sensor emits blue light to the fluorescent material on the surface of the head (fluorescent membrane cap), the fluorescent material is excited to release red light, the higher the dissolved oxygen concentration, the shorter the time from emitting blue light to releasing red light, the dissolved oxygen meter sensor calculates the dissolved oxygen concentration in the medium by using the correlation between the red light release time and the dissolved oxygen concentration (release time). The sensor has built-in temperature compensation and standard RS485 output, which can be connected to various terminals.

Digital conductivity sensor, based on electrode potential method, uses industrial-grade electrodes and anti-polarization 4-electrode design. The conductivity sensor developed based on the digital sensing platform uses industrial four-level electrodes, and the sensor integrates automatic temperature compensation, digital signal conversion and other functions, with RS485 output, standard MODBUS protocol, and supports various terminal networking.

Digital conductivity sensor, based on electrode potential method, uses industrial-grade electrodes. The conductivity sensor developed based on the digital sensing platform uses a two-pole conductivity electrode. The current can be measured by applying voltage to the two poles. The conductivity can be calculated through the voltage/current measurement value and the water sample temperature compensation algorithm. With RS485 output, standard MODBUS protocol, and support for various terminal networking.

The digital turbidity sensor is based on the 90-degree infrared scattering method of the ISO7027 standard. It measures the turbidity value of the sample according to the scattered light intensity of suspended particles in the water sample. The sensor uses a near-infrared LED as a light source, and even if there is color in the sample, it will not affect the measurement results. The unique protective structural design of the sensor detection surface can protect the sensor detection window to the greatest extent and avoid accidental collision damage to the sensor measurement surface during installation and use.

The digital turbidity sensor is based on the 90-degree infrared scattering method of ISO7027 standard, and measures the sample turbidity value according to the scattered light intensity of suspended particles in the water sample. The sensor uses an LED infrared scattering light source (860nm), which will not affect the measurement results even if there is color in the sample. The unique protective structural design of the sensor detection surface can protect the sensor detection window to the greatest extent and avoid accidental collision damage to the sensor measurement surface during installation and use.