Drainage System

The radar flowmeter has built-in liquid level and flow rate measurement modules. It is a non-contact flowmeter designed with microwave lens + microstrip array, 120GHz radar liquid level measurement + 24GHz radar Doppler surface flow rate measurement. It has the characteristics of high precision, low power consumption, strong anti-interference ability, etc. It can work stably all day long, is not affected by temperature gradients, cobweb condensation, pollutants and sediments in the water, and accurately measures water flow.

Radar ultrasonic flowmeter, with 24GHz CW continuous wave Doppler + ultrasonic Doppler two speed measurement modes, radar Doppler measures flow velocity in non-full pipe flow state; automatically switches to ultrasonic Doppler to measure flow velocity in full pipe flow state, so that both full and non-full pipes can be measured; polyester plastic shell, suitable for underground pipe network and other highly corrosive liquid and gas environment; the product has been screened by military-grade stress and can work normally in harsh high and low temperature environments; passed 6KV high voltage surge test, it has high reliability even in lightning environment.

The partially filled pipe electromagnetic flowmeter is a device independently developed by DWI specifically for the precise measurement of partially filled pipe flow. Like ordinary electromagnetic flowmeters, it uses Faraday's law of electromagnetic induction to measure flow. Through the unique low-level electrode layout and non-contact capacitive liquid level measurement, the electromagnetic method can achieve synchronous measurement of liquid level and flow rate in a non-full pipe state without the need for additional liquid level measurement devices. It is particularly suitable for the precise measurement of partially filled pipe flow in the water supply and wastewater industries.

The partially filled pipe electromagnetic flowmeter, is a device specially designed for accurate measurement of partially filled pipe flow. Like ordinary electromagnetic flowmeters, it uses Faraday's law of electromagnetic induction to measure flow. The flow rate is measured by low-level electrode layout, and air ultrasonic liquid level measurement is integrated to achieve electromagnetic method for synchronous measurement of liquid level and flow rate in partially filled pipe state. It is especially suitable for accurate measurement of partially filled pipe flow in water supply and wastewater industries.

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.