Dedicated Dosing Electromagnetic Flowmeter for Water Plants

The electromagnetic flowmeter specially designed for chemical dosing in water plants is a high-precision measuring instrument developed based on Faraday's law of electromagnetic induction, tailored specifically for applications such as chemical dosing (e.g., PAC, PAM, sodium hypochlorite) in tap water plants and wastewater treatment facilities.

Belongs to:

High-precision electromagnetic flowmeter

Consulting

Data Download

Details

产品描述

- Commodity name: Dedicated Dosing Electromagnetic Flowmeter for Water Plants
I. Product Introduction
The electromagnetic flowmeter specifically designed for chemical dosing in water plants is a high-precision measuring instrument developed based on Faraday's law of electromagnetic induction. It is custom-built for applications such as chemical dosing (e.g., PAC, PAM, sodium hypochlorite) in tap water and wastewater treatment facilities. The sensor and converter can be installed either as an integrated unit or in a split configuration. By measuring the induced electric potential generated when conductive chemicals flow through a magnetic field, this meter delivers highly sensitive and stable measurements of both instantaneous and cumulative flow rates. Importantly, the device features no moving obstructions, resulting in zero pressure loss and requiring virtually no maintenance. This makes it an ideal solution for water plants, providing critical data support for precise chemical dosing, closed-loop control, and digital management systems.

II. Product Specifications (Typical Values, Customizable Upon Request)
• Nominal diameter: DN8–DN200 (covering common microflows to small-to-medium flows for dosing applications)
• Flow range: 0.5 L/h to 630 m³/h
• Accuracy Class: ±0.5%R (optional 0.2%R)
• Media conductivity: ≥20 μS/cm
• Lining materials: PFA, PTFE, or hygienic-grade plastic
• Electrode materials: Hastelloy C, titanium, platinum-iridium, and tantalum—selected to match corrosive solutions as needed.
• Output signals: 4-20 mA, RS485/Modbus, HART, pulse, alarm dry contact
• Power Supply: AC 220 V, DC 24 V
• Process connections: National standard flanges, sanitary clamp fittings, threads, and wafer designs, suitable for both new construction and renovation projects

III. Product Features
1. Ultra-high-precision microflow measurement: Starting flow rate as low as 2 mm/s, capable of stably detecting minute dosing pulsations below 0.5 L/h, ensuring precise "milligram-level" chemical addition.
2. Full Lifecycle Corrosion Resistance: Featuring a premium PFA/PTFE lining paired with noble metal electrodes, this product offers long-term durability against pH levels ranging from 0 to 14, as well as oxidative media such as free chlorine and hypochlorite ions.
3. Ultra-fast Dynamic Response: 25 Hz High-Frequency Excitation + 32-bit DSP, achieving a flow step response of less than 200 ms, thus meeting the stringent real-time requirements of PID control.
4. Fully digital anti-interference: Featuring dual-frequency excitation, noise suppression algorithms, and an integrated shielding-grounding design, this system ensures stable readings even in environments with strong electromagnetic interference, such as variable-frequency pumps and high-voltage ion-exchange membranes.
5. Intelligent Self-Diagnosis: Air traffic control alarms, electrode contamination detection, excitation circuit open-circuit alarms, and temperature drift compensation; supports NFC near-field debugging and cloud-based remote operation & maintenance.
6. Installation Friendliness: Shortest straight pipe sections—5D upstream and 3D downstream; for sizes DN20 and smaller, U0/D0 installation is possible.

IV. Typical Application Scenarios
• Precise dosing of coagulants (PAC, aluminum sulfate) at the water treatment plant—using real-time flow feedback to control variable-frequency dosing pumps, enabling closed-loop adjustment between raw water turbidity and chemical dosage, thus saving chemicals.
• Wastewater treatment plant phosphorus and nitrogen removal chemical dosing—precisely delivering corrosive solutions such as sodium acetate and sodium hypochlorite at the mg/L level in AAO and MBR process sections, ensuring that the effluent TP and TN levels meet regulatory standards.
• Membrane Workshop CIP Online Cleaning – Implements bidirectional high-precision metering for acid, alkali, and oxidizing cleaning solutions, ensuring both membrane lifespan and cleaning effectiveness.
• Emergency Dosing System – A mobile, skid-mounted dosing unit equipped with a DN10 miniature electromagnetic flowmeter, enabling rapid deployment after disasters to ensure safe water supply.
• Digital Water Plant / Smart Water Management – Leveraging RS485-Modbus connectivity to SCADA/DCS for real-time chemical consumption calculation, carbon emission analysis, and cloud-based operations & maintenance.