A 3-minute guide to the highlights, features, components, types, workings and uses of precision jewelry digital scales. If you are a new user of precision jewelry scales, this content is for you.
Functions and Composition of Precision Jewelry Scales:
Precision jewelry scales have many functions, such as automatic display, automatic calibration, tare, automatic data output, automatic fault tracing, overload protection, etc. Precision jewelry scale is a comprehensive product of the development of sensing technology, analog digital technology, digital technology and microprocessor technology. Precision jewelry scale generally uses electromagnetic force sensors (see weighing sensors) to form a closed-loop auto-adjustment system with high accuracy and stability.
Jewelry scales working principle.
In the weighing pan placed in the weighing object, the sensor’s position detector signal changes through the amplifier feedback so that the current in the sensor coil increases; this current in the constant magnetic field produces a feedback force, and the load is balanced. At this time, the current in the measurement of the resistance Rm on the voltage value of the filter, analog/digital converter into the microprocessor, data processing, and finally, the jewelry scale display automatically shows the weighing object quality data. Finally, the display of the jewelry scale automatically shows the data of the object’s mass to be weighed.
Precision jewelry scale types:
Precision jewelry scale is a laboratory to do quantitative analysis of the necessary instruments, a comprehensive understanding of the performance of the jewelry scale and master the use of methods, is to obtain reliable analysis results of the security. Digital precision balance has many types: ordinary precision balance, semi-automatic/automatic plus code electro-optical projection damping precision balance and digital precision balance.
The use of digital precision jewelry scale
1 First, check and adjust the jewelry scale to the horizontal position.
2, use to confirm that the power supply voltage is matched (if necessary, configure the voltage regulator), according to the requirements of the jewelry scale manual power preheating to the required time.
3, warm up enough time and turn on the jewelry scale switch; the jewelry scale will automatically adjust the sensitivity and zero point. After displaying the stabilization sign, you can weigh it officially.
4、When weighing, please put the clean weighing bottle or paper on the weighing plate, close the side door, and lightly press the tare button; the jewelry scale will automatically calibrate the zero point, then gradually add the substance to be weighed until the desired weight.
5, the weight of the weighed material is the actual value shown on the display when the “→” sign appears in the lower left corner of the display.
6, the end of weighing to remove the weighing bottle in a timely manner (paper), close the side door, power cut off, and timely registration of use.
Precision jewelry scales Precautions for use
1, jewelry scales should be placed on a stable and solid cement platform or workbench; the environment should be dry and clean, at constant temperature; do not let the light directly on the scale.
2, in the weighing of substances to be taken from the digital side of the door, close the door of the box in the reading, prevention and control of airflow to make the balance swing. The front door of the jewelry scale is only used when servicing or removing residual substances.
3, if the digital precision balance has not been used for a long time, it should be regularly energized to preheat, once a week, each time to preheat 2h, to ensure that the instrument is always in a good state of use.
4, the balance box should be placed in the moisture absorber (such as silica gel) if the moisture absorber absorbs water and discoloration to replace the high-temperature baking to ensure moisture absorption performance immediately.
5, weigh corrosive, volatile, strong acid and alkali substances to be held in the weighing bottle with a lid and then weighed to avoid corrosion of jewelry scales.
