Magnetic Testing
DX-9700HC Hard Metal Magnetometer
Cemented Carbides Measurement
High-precision measurement system for evaluating the magnetic properties of cemented carbides (WC-Co alloys) and semi-hard magnetic materials in research and quality control environments.
Product Overview
DX-9700HC Hard Metal Magnetometer is a high-precision measurement system designed for evaluating the magnetic properties of cemented carbides (WC-Co alloys) and semi-hard magnetic materials.
The system provides accurate magnetic parameters that help evaluate other correlated material properties such as hardness and the presence of undesired phases.
The DX-9700HC uses advanced digital measurement technology to provide fast, repeatable and highly accurate magnetic measurements, making it suitable for research laboratories and industrial quality control applications.
The system complies with international standards including:
- IEC 60404-4
- ASTM A596
Measurement Principle
The DX-9700HC measurement process is controlled by computer software and a data acquisition system. The typical workflow is:
- The computer sends excitation current signals to the excitation power supply through a data acquisition card.
- The excitation power supply drives the electromagnet to generate a changing magnetic field.
- The DX-210H Gaussmeter measures the magnetic field intensity.
- The DX-210B Fluxmeter measures magnetic flux.
- Signals are converted from analog to digital by a dual-channel A/D converter.
- The computer processes the data and generates measurement results and graphs.
Typical measurement time is 60 – 120 seconds per test.
Software Functions
The DX-9700HC measuring software provides powerful testing and data analysis features.
- Supports Windows XP, Windows 7, Windows 8 and Windows 10
- Chinese and English interface available
- Real-time waveform display during measurement
- Automatic saving of measurement results
- Sample parameters and measurement data stored automatically
- Print preview and report printing functions
- Export measurement results as BMP images or data tables
- Up to four measurement curves can be displayed simultaneously for comparison
- Built-in temperature coefficients for various materials
- Measurement time: 30 – 120 seconds depending on sample
Measurement Accuracy
| Parameter | Uncertainty (%) | Repeatability (%) |
|---|---|---|
| HcB | 1.0 | ±0.3 |
| HcJ | 1.0 | ±0.3 |
| Br | 1.0 | ±0.3 |
| BHmax | 2.0 | ±1.0 |
Excitation Power Supply
Different electromagnets can generate different magnetic field ranges depending on application requirements.
| Model | Output Power | Input Power | Output Voltage | Output Current |
|---|---|---|---|---|
| 140 | 2 kVA | Single Phase 220V | 0 – ±100 V | 0 – ±20 A |
| 200 | 4 kVA | Three Phase 380V | 0 – ±120 V | 0 – ±40 A |
| 250 | 8 kVA | Three Phase 380V | 0 – ±150 V | 0 – ±60 A |
| 300 | 16 kVA | Three Phase 380V | 0 – ±200 V | 0 – ±80 A |
- Stability: 0.05%
- Protection: Over-current and over-voltage protection
- Operating conditions: 0–40°C, 40–80% RH
Gaussmeter Specifications
Model: DX-210H Gaussmeter
| Parameter | Specification |
|---|---|
| Measurement Principle | Hall Effect |
| Display | 4½ digit LED |
| Range | 0.5 / 1.0 / 1.5 / 3.0 T or 0.5 / 1.0 / 2.0 / 4.0 T |
| Resolution | 1 mT |
| Accuracy | 0.3% |
Fluxmeter Specifications
Model: DX-210B Fluxmeter
| Parameter | Specification |
|---|---|
| Display | 4½ digit LED |
| Range | 2.5 / 5 / 10 / 20 mWb |
| Resolution | 1 µWb |
| Accuracy | 0.3% |
| Drift | 1 µWb/min |
| Input Impedance | 10 kΩ |
Electromagnet Options
Different electromagnets can be selected depending on sample size and magnetic field requirements.
| Model | Pole Face Diameter | Air Gap | Magnetic Field | Weight |
|---|---|---|---|---|
| DXT-140 | 140 mm | 60 mm | 1.8 T | 200 kg |
| DXT-200 | 200 mm | 80 mm | 2.8 T | 800 kg |
| DXT-250 | 250 mm | 80 mm | 3.0 T | 1400 kg |
| DXT-300 | 300 mm | 80 mm | 3.2 T | 3000 kg |
Data Acquisition System
Two types of data acquisition cards can be used:
MP411 Data Acquisition Card
| Parameter | Specification |
|---|---|
| Resolution | 12-bit |
| Sampling Speed | 2000 – 20000 channels/sec |
| Input Impedance | 1 MΩ |
| System Accuracy | ±0.1% FSR |
USB2817 Data Acquisition Card
| Parameter | Specification |
|---|---|
| Resolution | 16-bit |
| Sampling Speed | 2000 – 250000 channels/sec |
| Input Impedance | 10 MΩ |
| System Accuracy | 0.01% FSR |
Standard System Configuration
| No | Component | Description |
|---|---|---|
| 1 | Excitation Power Supply | 2 – 16 kVA |
| 2 | Electromagnet | Pole face diameter 140 – 300 mm |
| 3 | Gaussmeter & Fluxmeter | Magnetic field and flux measurement |
| 4 | Fixed J Coil | Measurement coil |
| 5 | Standard Sample | AlNiCo |
| 6 | Data Acquisition Card | 12-bit or 16-bit |
| 7 | Computer | Industrial PC |
| 8 | Measuring Software | DX-2012 |
| 9 | Printer | HP Laser Printer |
| 10 | User Manual |
Applications
- Cemented carbide material testing
- Hard metal quality control
- Magnetic material research laboratories
- Industrial materials testing
- Universities and research institutes