Gaussiometer(Teslagometer) The most important reference technical index for selection is the range, resolution, accuracy and probe of measuring magnetic field strength. The probe is divided into radial probe and axial probe according to different packaging effects, and the probe can also be customized according to the measured magnet. Users can use their own accessories according to their own environment and precision requirements. Most imported ones have higher precision but are too expensive to be suitable for ordinary magnetic field measurement and magnetic material testing. Domestic ones can meet these requirements.
GaussiometerIt is a widely used measuring instrument in the field of magnetic measurement, choose a practical Gauss meter, for the use
For personnel, it can not only ensure the measurement accuracy and other requirements, but also quickly get started and improve work efficiency. So, how
How can we choose the Gaussiometer that suits us?
According to the measurement object selection, the following 9 aspects of gaussmeter should be considered comprehensively:
① The range of gauss meter is divided into 3 gears, and the general range is 0-3T,
Hunan Yongyi Technology Co., Ltd.
FE-102 Handheld GaussmeterRange: 0-30mT-300mT-3000mT If it is below 4G, low field probe is required.
Head. Above 3T, an additional high field probe is required.
②
GaussiometerAccuracy: more than 1% or less, the measurement accuracy is high, choose less than 1%, the requirement is not
More than 1% is enough.
Whether it is necessary to measure the alternating magnetic field, it is necessary to choose a gaussmeter that can measure the AC and DC magnetic field. worth noting
All Gaussiometers can measure DC magnetic fields. Hunan Yongyi Technology Co., Ltd.FE-103 Desktop GaussianMeter adaptation test
DC magnetic field, AC magnetic field (0-400Hz)
④ If the alternating magnetic field is measured, the average value of the measured value of the alternating magnetic field and the value you need to measure is still valid.
Value.
⑤ The measurement of alternating magnetic field should also consider the frequency requirements of the test. For example, the test frequency of FE-103 desktop gauss meter of Hunan Yongyi Technology Co., Ltd. is (0-400Hz)
Whether the product sorting function and alarm function are required.
⑦ Whether horizontal or axial probes are required for test occasions, and whether various probes can be selected.
The length of the probe cable required for testing.
⑨ Handheld and desktop for indoor and outdoor requirements, battery powered and AC 220V power supply.
Several elements of gaussmeter probe selection
ProbeAs an important module of the gaussmeter as a whole, its choice in many ways determines whether the gaussmeter can play a better role and accurately reflect the magnetic induction intensity of the measured target. Here, several concepts need to be clarified first:
1. Test sensitive area (active area): The test sensitive area refers to the area on the sensor in the probe that can sense the magnetic induction intensity of the measured target (point). The gaussmeter probe measures the average magnetic induction in the test sensitive area. According to the definition of the limit, when the area of the test sensitive area of the probe is very small, it can be considered that the measured point magnetic field.
2. Magnetic linearity. Within the range, the percentage of the maximum deviation between the sensor calibration curve and the fitted straight line and the full-scale output becomes the linearity (or non-linear error). The magnetic linearity is the linear characteristic of the output voltage (Hall voltage) and the magnetic induction intensity. The smaller the value, the better the linear characteristic and the higher the accuracy.
3. The temperature coefficient is a state description of the temperature drift phenomenon. Temperature drift refers to the change of the parameters in the sensor when the ambient temperature changes. The smaller the temperature drift, the smaller the temperature coefficient, the higher the accuracy of the gaussmeter. However, when the Hall sensor of the probe is at a high operating temperature for a long time, the wire bonding between the chip and the substrate may be loose or broken, which will affect the normal operation of the sensor and affect the measurement accuracy.
In addition to the above elements, in the selection of Gaussiometer
ProbeIt is also necessary to take into account the use of the occasion (radial probes are mostly used
To measure the magnetic induction intensity of the surface of the target to be measured, the axial probe is mostly used to measure the magnetic induction intensity of the coil, the three-dimensional probe is mostly used to measure the magnetic induction intensity in space, and the ultra-thin probe and the high temperature probe are mostly used in specific complex occasions. Whether it is necessary to order longer probe cables, measurement range and frequency range, etc.).
Taken together, it should be considered.
GaussiometerThe range, probe model, test function, test accuracy, etc. of
Consulting manufacturers, you will be able to choose a more practical Gauss meter.
AttachedHunan Yongyi Technology Co., Ltd.GaussiometerList of parameters:
| |
FE-102 Handheld Gaussmeter |
FE-103 table gaussmeter |
FE-105 Digital Gaussmeter |
FE-1052 two-channel gaussmeter |
| Range |
0-3000mT |
0-200-2000mT |
0-30000Gs |
±20Gs |
| Accuracy |
1.0% |
1.0% |
1.0% |
1.0%±0.003Gs |
| Resolution |
0.1mT |
0.01mT |
0.1Gs |
1mGs |
| measured magnetic field |
DC magnetic field |
AC and DC magnetic fields |
DC magnetic field |
weak magnetic field |
| peak hold |
There are |
There are |
None |
There are |
| sorting function |
None |
None |
There are |
There are |
| External interface |
None |
There are |
There are |
There are |
| Supporting software |
None |
None |
There are |
There are |
Hunan Yongyi Technology Co., Ltd.GaussiometerProbe selection
Extended reading
