Hangzhi Precision

Hangzhi reliable ppm-level high-precision current sensor

hangzhi ppm level high precision current sensor

Making high-precision current measurement no longer a challenge — Hangzhi ppm-level high-precision current sensor

In many industrial applications, high-precision current measurement is crucial for equipment performance; even slight inaccuracies can have significant consequences. This is particularly true in fields such as medical equipment (heavy ion accelerators, nuclear magnetic resonance imaging, etc.), high-energy physics accelerators, high-precision motor controllers, and metering instruments or accessories for measurement and testing equipment.

To achieve this challenging current measurement, current sensors, as current measurement and control components, face increasingly stringent requirements for accuracy, stability, and sensitivity. Based on this, Hangzhi has developed the AIT series of ppm-level high-precision current sensors with independent intellectual property rights, based on the fluxgate principle. Leveraging its technological advantages, this series achieves high gain and measurement accuracy across the entire bandwidth, featuring high precision, high bandwidth, full range, low temperature drift, low zero drift, and AC/DC compatibility.

Key Technical Parameters of the Product

  • Current Measurement Range: 1A-30kA
  • High Accuracy: Up to 10ppm (ppm: Parts per million)
  • Linearity: Up to 2ppm
  • Wide Bandwidth: (Up to 500kHz @±3 dB)
  • Response Time: 1μs
  • Extended Operating Temperature Range: -40..+85°C
  • Extremely High Stability (0.2 ppm/month)

ppm-Level High-Precision Current Sensor Selection Table

Application Areas

  • 1. High-Energy Physics: Accelerator Magnet Power Systems
  • 2. Medical Equipment: Magnetic Resonance Imaging (MRI) / Medical Heavy Ion Accelerator Cancer Treatment Equipment
  • 3. High-Precision Power Measurement (with Power Analyzer)
    High-precision power testing is required for wind turbines, photovoltaic inverters, new energy vehicle on-board inverters, motors, metrology calibration laboratories, etc.
  • 4. High-Precision Equipment Calibration
    Hangzhi’s high-precision current sensors offer stability and accuracy at the PPM level, providing high-precision and cost-competitive sensors for traditional and high-performance industrial testing equipment. This makes them a benchmark for calibration and widely recognized by laboratories.
  • 5. Other High-Precision Applications
    High-stability power supply systems, battery testing systems, precision motor control, etc.

Major Scientific Research Collaboration Projects

  • 1. Chinese Academy of Sciences: Heavy Ion Accelerator Project
  • 2. Tsinghua University: Lithography Machine Project
  • 3. A Shanghai-based medical company: Nuclear Magnetic Resonance Imaging Project
  • 4. China Southern Power Grid Shenzhen: DC Power Distribution Demonstration Project

Fluxgate technology principle

The fluxgate current sensor uses the non-linear relationship between the magnetic induction intensity and the magnetic field intensity of the high magnetic permeability core in the measured magnetic field under the saturation excitation of the alternating magnetic field to measure the weak magnetic field. This physical phenomenon seems to be a “gate” to the measured ambient magnetic field. Through this “gate”, the corresponding magnetic flux is modulated and an induced electromotive force is generated. This phenomenon is used to measure the magnetic field generated by the current, so as to indirectly achieve the purpose of measuring the current.

αρχή λειτουργίας του αισθητήρα ρεύματος fluxgate-hangzhi

In the magnetic circuit, in order to detect a magnetic field equal to zero magnetic flux, the secondary coil must be excited by the necessary current. In the environment of zero magnetic flux, the current of the sensor is strengthened through the secondary coil, which is confirmed to be proportional to the measured primary current. . Ip=Ns. The Is ferromagnetic core and the auxiliary coil form a saturated inductor. In the case of zero magnetic flux, the detection of the sensor’s magnetic circuit is based on the change in the inductance of the inductor.

Σχετικά με το Hangzhi

Shenzhen Hangzhi Precision Electronics Co., Ltd. είναι μια τεχνολογικά κορυφαία επιχείρηση αφιερωμένη στην έρευνα και την ανάπτυξη, την παραγωγή, τις πωλήσεις και την προσαρμογή λύσεων για αισθητήρες ρεύματος υψηλής ακρίβειας, αισθητήρες τάσης και ηλεκτρικά όργανα μέτρησης υψηλής ακρίβειας. Επιδιώκουμε να δημιουργήσουμε μια γνωστή μάρκα fluxgate αισθητήρες ρεύματος ακριβείας και ηλεκτρικά όργανα μέτρησης ακριβείας στον τομέα του συνεχούς ρεύματος, και προσπαθούμε να εξελιχθούμε σε έναν διεθνώς κορυφαίο ηγέτη στον τομέα των ηλεκτρονικών ακριβείας στον τομέα των συστημάτων συνεχούς ρεύματος.

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