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Rectifier electromagnetic flow measurement system is specially developed for accurate measurement of small flow/partial pipe flow in drainage systems. The measurement accuracy is maintained above 95% under actual working conditions. It consists of an installation adapter, a multifunctional rectifier box, a functional sensor, a partial pipe electromagnetic flowmeter, an overflow compensation sensor, a signal transmission module, and a power supply system. Steady-state flow is achieved through the adapter system, and electromagnetic flow measurement is achieved under partial pipe and full pipe flow conditions.

Mobile electromagnetic flow monitor, composed of portable control box, airbag inflation device, closed airbag, electromagnetic flow meter. The system integrates closed airbag, which can be easily installed at the circular cross-section measurement point. It can usually be installed in the existing infrastructure without excavation. The airbag completely closes the pipe cross-section, guides all water through the measurement system, and forms waterlogging through the outlet bend to form a full pipe flow, which can achieve accurate measurement of small flow, non-full pipe flow and other scenes. Note: When the water volume is too large, the airbag will automatically exhaust to prevent waterlogging in emergency situations.

The pinch valve constant flow control system/flow monitoring system is composed of a pneumatic controller, an electromagnetic flowmeter, a pinch valve and a liquid level measurement system, and is applicable to both full pipe flow and non-full pipe flow measurement. It can be used to accurately control the discharge of a specific flow rate, that is, through the real-time monitoring of the flow rate by the flowmeter, control the opening and closing of the pinch valve, and achieve accurate discharge of a specific flow rate; it can also achieve accurate flow measurement, that is, through the pinch valve opening control, shaping the non-full pipe flow into a full pipe flow, and achieve accurate flow measurement through the electromagnetic flowmeter;

The alligator steady flow control system flow monitoring system is composed of a pneumatic controller, an electromagnetic flowmeter, a crocodile mouth valve and a liquid level measurement system, which is applicable to both full pipe flow and non-full pipe flow measurement. It can be used to accurately control the discharge of a specific flow, that is, through the real-time monitoring of the flow by the flowmeter, control the opening and closing of the crocodile mouth valve, and achieve accurate discharge of a specific flow; it can also achieve accurate flow measurement, that is, through valve control, shaping the non-full pipe flow into a full pipe flow, and achieve accurate flow measurement through the electromagnetic flowmeter.

The road waterlogging monitoring machine conducts real-time waterlogging water level monitoring, rainfall monitoring, video/image monitoring of flood-prone points such as underpasses, tunnels, culverts, and underground parking lots in the city. The data automatically alarms when it exceeds the limit and is transmitted to the monitoring center software through 4G/5G/NB-IoT/fiber optic networks. The municipal management department uses this system to grasp the waterlogging situation in the entire urban area and conduct drainage scheduling in a timely manner to avoid losses caused by people and vehicles entering deep water sections by mistake. It also has sound and light prompt alarm functions.

H₂S online detector detects gas concentration by natural diffusion. It uses electrochemical sensors with good sensitivity and excellent repeatability, and can continuously detect gas concentration in real time. The large-screen LCD displays gas concentration in real time, and is equipped with a 4-20mA/RS485 output interface and output switch quantity. It uses embedded microcontroller technology, which is simple to operate, fully functional and highly reliable. The calibration cycle is recommended to be 6 to 12 months.

H₂S online detector detects gas concentration by natural diffusion. It uses electrochemical sensors with good sensitivity and excellent repeatability, and can continuously detect gas concentration in real time. Equipped with 4-20mA/RS485 output interface and output switch quantity (used for extended control of sound and light alarms, relays, etc.), the instrument adopts embedded microcontroller technology, which is simple to operate, fully functional and highly reliable. The calibration cycle is recommended to be 6 to 12 months.

H₂S wireless detector is a fixed instrument for continuous detection of gas concentration in the environment. It detects gas concentration by natural diffusion and uses electrochemical sensors, which have good sensitivity and excellent repeatability; LED digital display shows gas concentration in real time and has zero-crossing shutdown function; it is equipped with 4-20mA/RS485 output interface and output switch quantity, and the instrument integrates NB-IoT/4G Cat.1 communication module, which can upload data wirelessly. The instrument adopts embedded microcontroller technology, which is simple to operate, fully functional and highly reliable.

The outdoor battery-powered telemetry terminal integrates 4G and NB-IoT telemetry modules to realize 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. The terminal is equipped with a battery, which is especially suitable for monitoring sites with no power supply conditions and high requirements for waterproof and dustproof. It can be used in a variety of occasions: pipe network monitoring, groundwater monitoring, field monitoring, etc.

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.

Multi-interface waterproof telemetry terminal RTU, an intelligent terminal device that realizes remote data collection, transmission and control based on wireless communication networks such as GPRS, 4G, NB-IOT, etc., with low power consumption, multiple interface types and numbers, IP68 waterproof and other characteristics. Widely used in meteorology, water conservancy, water supply and drainage, thermal power and other fields.

Video telemetry terminal RTU, integrating telemetry terminal RTU, 7-inch color touch screen and video transmission. Video telemetry terminal RTU can realize various data acquisition, intelligent logic control, high-speed calculation and analysis, local large-capacity storage, 4G/5G/Ethernet remote communication, human-computer interaction, video data superposition transmission and other functions. It is widely used in monitoring projects such as reservoir rain and dam safety monitoring, river gate monitoring, hydrological monitoring forecast and early warning, and soil moisture monitoring.