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Zhangjiakou Smart IC Card Hot Water Meter Principle:
The measurement principle of the flow meter is based on Faraday's law of electromagnetic induction. The measurement tube of the flow meter is a short tube lined with insulating non-magnetic alloy. Two electrodes are fixed in the wall along the diameter of the tube. The electrode heads are nearly flush with the inner surface of the lining. When the excitation coil generates a magnetic field with a magnetic flux density of B in a direction perpendicular to the axis of the measurement tube using a bidirectional square wave pulse, if a liquid with a certain conductivity flows through the measurement tube, it will cut through the magnetic field lines, inducing an electromotive force E. The electromotive force E is proportional to the product of the magnetic flux density B, the inner diameter d of the measurement tube, and the average flow velocity V. The electromotive force E (flow signal) is detected by the electrodes and transmitted to the converter via a cable. The converter amplifies and processes the flow signal, allowing for the display of fluid flow and the output of pulse, analog current, and other signals for flow control and regulation.
Zhangjiakou Smart IC Card Hot Water Meter Features:
1. The instrument has a simple and reliable structure, with no moving parts, resulting in a long service life.
2. No obstructive components, preventing pressure loss and fluid blockage.
3. No mechanical inertia, quick response, good stability, applicable for automatic detection, regulation, and program control systems.
4. Available in pipeline and insertion types for easy installation.
5. Available in integrated and split types for easy selection.
6. Measurement accuracy is unaffected by the type of measured medium and its physical parameters such as temperature, viscosity, density, and pressure.
7. Different combinations of PTFE or rubber linings and electrode materials like Hc, Hb, 316L, Ti can adapt to various medium requirements.
8. Uses EEPROM storage, ensuring the safe and reliable protection of measurement and calculation data.
9. Multiple signal transmission methods and power supply options available.
10. High-definition LCD backlit display.
We specialize in card-type water meters, and we have a beautiful office and research environment, a dedicated R&D team, and a modern standard production workshop. Let me explain the basic structure, principle, and main parameters of card-type water meters.
Product technical standards comply with CJ/T133-2001 and GB/T778.1 standards.
The allowable measurement error of the base meter meets the requirements of GB/T778.1 Class B meter.
Pressure resistance: 1.6MPa for 15 minutes.
Pressure loss: ≤0.1 MPa.
Working voltage: DC3.6V±0.6V.
Static current: ≤20μA.
Working current: <40mA (Temperature 15℃ ~ 35℃).
Controller accuracy: ≤0.1%.
Controller reliability (MTBF): ≥2000h.
Durability: Card slot >100,000 times, electrically controlled valve >10,000 times.
Motor-driven pilot valve action margin: 0.05 MPa ~ 1.0 MPa.
Medium temperature
Cold water meter medium temperature: 0℃~ 40℃.
Hot water meter medium temperature: 5℃~ 90℃.
