Gauss meter definition: (Tesla meter) Gauss meter is a precision instrument used to measure and display the average magnetic flux density or magnetic induction intensity per unit area. In the CGS unit system, the unit of magnetic induction is Gauss, so it is called Gauss meter. In the SI unit system, the unit of magnetic induction is Tesla, so it is called Tesla meter.
The unit of the magnetic field is represented by Tesla (T) millitesla (mT) or Gauss (Gs) or milligauss (mGs) or micro Tesla (μT).
1 Tesla (T) = 10,000 Gauss (Gs)
1 millitesla (mT) = 10 Gauss (Gs)
1 Gauss (Gs) = 1,000 Milligauss (mGs)
1 micro Tesla (μT) = 10 milligauss (mGs)
Gauss meter (Tesla meter) classification:
a.pointer
b.digital
c.portable.
Gauss meter (Tesla meter) use
(a) Surface magnetic field measurement of permanent magnets: Gauss meter (Tesla meter) is used to measure the surface magnetic field strength of permanent magnet products, mainly to evaluate the quality of permanent magnet products and the consistency of magnetic properties after magnetization; The magnetic field strength at the center point of the surface is measured, and the product is judged whether the product is qualified by comparing the data of the standard sample, and the consistency of the material can also be ensured.
(b) Measurement of the air-gap magnetic field: Gauss meters (Tesla meters) are widely used to measure gas magnetic fields, and are used in scientific research, electronic manufacturing, machinery and other fields. At present, the typical application industries mainly include electrical machinery and electro-acoustic industries.
(c) Residual magnetism measurement: such as the demagnetization effect detection after the workpiece is demagnetized.
(d) Magnetic flux leakage measurement: such as speaker magnetic flux leakage measurement.
(e) Environmental magnetic field measurement
How to choose a gauss meter?
The selection of Gauss meter should start with the measurement object first, and consider the following aspects:
a. Magnetic field type: The magnetic field is divided into two types: DC magnetic field and AC magnetic field. The magnetic field strength of permanent magnet materials should be measured with a DC Gauss meter;
b. Gauss meter range: clarify the approximate magnetic field range of the measured object, and the range range of the gauss meter should be greater than the measured magnetic field;
c. Measurement accuracy: refers to the resolution of the instrument, such as 1Gs or 0.1Gs, etc.;
d. Probe selection: ①Air-gap magnetic field measurement: The size of the probe should be considered. If the probe size is larger than the measured air gap, it cannot enter the measured air gap and cannot be used; ②Probe direction selection: Probe direction There are two types: horizontal and axial. When selecting a probe, the user should consider choosing the appropriate probe according to the object to be measured; ③Probe connection cable: The length of the probe cable of the instrument manufacturer is usually fixed. If there are special measurement requirements, it needs to be extended. Or shorten the probe line, it should be proposed to the manufacturer.
e. The length of the probe cable required for the test.
f. Power supply mode: desktop gaussmeters are usually powered by AC 220V, and portable gaussmeters are powered by batteries.
g. Function selection ①General functions: polarity judgment, maximum value lock, etc.; ②Portability: If you need outdoor operation or on-site measurement, you can choose a portable gaussmeter (portable) with better portability. This type of instrument is small in size and heavy in weight Lightweight, battery-powered; ③Quick production line measurement: the instrument has upper and lower limit setting and alarm functions; ④AC magnetic field measurement: used to measure the strength of low-frequency (1-400Hz) alternating magnetic field.
h. Price selection: The more common gaussmeter models include Japan’s strong Kanetec gaussmeter TM-801EXP, Chinese-made TD8620, TM4100B fluxmeter, TD8655, TD8650 and TM5340B and other Tesla meters, and the prices range from 690-7700RMB.
