1, metal factors
Including the type of metal, the direction and location of metal contaminants in the detected products. The type of metal is mainly divided into both electrically and magnetically conducting metals, such as iron and stainless steel with magnetic are easily detected. The direction of metal contaminants mainly refers to the difficulty of detecting when the magnetic metal is parallel with the direction of operation; the conductive metal is easy to detect when it is perpendicular to the direction of operation.
2. Environmental factors
Change alarm equipment vibration, electromagnetic interference, temperature change, the magnetic field around the power detection machine will cause the machine to detect errors, like this kind of environmental factors unless solve this problem through good design, otherwise only by reducing the sensitivity to solve the false alarm.
3, detection of product factors
Including the type of product, product temperature. Product type refers to the salt and acidic component content of products directly affect the conductivity of products, more salt, acid content, the conductivity is stronger, the larger the effect of relative products, it is difficult to detect, the sensitivity is low; the higher the temperature is, from the perspective of chemical molecular motion is stronger, more conductive strong, relatively detection will be difficult, but if you can reduce the frequency of equipment, product compensation, pressing the product effect, can not bear a grudge relative save this factor.
4, testing machine itself factors
The factors of the tester include opening size, machine frequency, running speed and the size of the belt signal. The larger the opening size is, the lower the detection sensitivity is and the smaller the opening size is, the higher the relative detection accuracy is. The higher the frequency of the machine, the higher the sensitivity of the detection.