W&J Instrument CO., LTD.

How to calibrate and install the scale? Following the  Analytical Balance supplier   would like to share with us. 1. Ensure stable, vibration-free placement and as horizontal as possible. 2. Avoid direct sunlight, strong temperature changes and air convection. It should be placed on a stable counter in the corner of the room and protected from airflow from doors, Windows, radiators or air-conditioning vents. 3. Adjust the horizontal foot so that the bubble in the horizontal bubble is in the middle. Note: each time the balance is moved, the blister needs to be readjusted. 4. When the balance is switched on, the monitor will display "OFF". 5. Press "ON/OFF" button, and the  0.0001g Analytical Balance  will display all symbols and punctuation marks and then enter self-check. After passing, it will display "0.0000g". Note: to give accurate results using grade I balance, the balance must be energized and preheated for more than 180 minutes (in OF...

The efficiency and accuracy of electronic balance The electronic balance produced is reasonably designed and reliable weighing results can be obtained in laboratories and workshops under normal conditions. But choosing the right setting environment can improve the work efficiency and the accuracy of measurement results. Balance should be placed on a clean, dry, non - corrosive surface, away from vibration and turbulence. It should be noted that the ambient temperature of the scale should not change too much. The average ambient temperature fluctuation of mp series electronic balance and ja series electronic precision balance shall not exceed 5℃/ hour. The average ambient temperature fluctuation of fa series electronic analysis balance shall not exceed 1℃/ hour, and the temperature limit range is 20℃±5℃. 200g electronic balance  ★200g   0.1mg precision balance 0.01g electric precision balance How to extend the life of electronic balance: 1. Before weighing...

Electronic balance, electronic balance price | Reason analysis of why electronic balances do not display weighing data. Shared by  0.01g electronic laboratory scales . 1. The sample has properties of water absorption, water discharge, electrostatic and magnetic. The correct use of weighing and microbalance can only be achieved by overcoming the above influences. 2. The desiccant's absorption and release of water form airflow in different directions, causing changes in air buoyancy, leading to unstable weighing. The desiccant in the weighing room should be removed to maintain a stable weighing environment; 3.  0.01g electronic laboratory scales  is placed in a poor environment: environmental factors include vibration, airflow, temperature and external magnetic field. The above environment must be improved. 4. Left hand temperature in the weighing room: try to reduce this person as the factor; 5. The temperature of the weighed object is not equal to that of ...

A description of the linear accuracy of the  0.001g electronic laboratory scales ： 1. Stability: Stability can be divided into long-term stability and instantaneous stability. Long-term stability means that the environmental temperature of the electronic balance does not change much, while instantaneous stability means that the value displayed by the balance is displayed immediately and remains unchanged after the balance is placed on the measured object. After electrification, the variation difference of the same supplement weight in different time periods is maintained for a long time. The smaller the difference of the above parameters is, the more stable the performance of the electronic balance is. 2. Linear accuracy: Linearity is also a very important index to measure the  0.001g precision balance , which mainly refers to the deviation between the display value and the precision value within the whole weighing range. The electronic balance with poor quality is di...

The halogen moisture meter is introduced in detail Moisture Analyzer  is the general term for all instruments used to measure moisture content. It is mainly used to measure the moisture content in solids, liquids and pastes. According to different test principles, we can be divided into a variety of, among which the most common include halogen moisture meter. , Karl Fischer moisture meter and online moisture meter. These different moisture meters have their own advantages and their application range is not the same. 1. Halogen moisture meter: halogen moisture meter, as a new type of fast moisture detection instrument, is heated by halogen circular lamp and operated intelligently. It can quickly and evenly dry samples to obtain accurate moisture measurement results. Clear moisture measurement information display makes the instrument operation intuitive and simple. Halogen moisture meter is suitable for moisture detection of solids, particles, powders, gels and pastes. 2. Onli...

Maintenance of  electronic precision balance : 1. Place the balance on a stable work table to avoid vibration, air flow and sunlight. 2. Adjust the bubble of the level to the middle position before use. 3. The electronic balance shall be preheated according to the requirements of the manual. 4. When weighing volatile and corrosive items, put them in an airtight container to avoid corrosion and damage to the electronic balance. 5. Check the electronic balance from time to time or go abroad regularly to ensure that it is in the best condition. 6. If the electronic balance breaks down, it should be repaired in time and not work with "disease". 7. The operating balance shall not be overloaded to avoid damage to the balance. 8. If the long-term use of electronic days should be temporary collection. That's all for the sharing, thanks for your reading, and we also supply  Precision Weighing Platform Scale  for sale, if you have any demand for our products, j...

Failure repair of electronic balance shared by  Analytical Balance Supplier . 8. Bad judgment of sensor Resistance method: first test whether the resistance between E+E- and S+S- is close to its nominal value. If normal, you can also measure the resistance between E+S+ and E+S-, which should usually be the same or close (the difference is more than 2 ohms and basically there is something wrong with the sensor). The resistance method is usually difficult to determine the sensor damage (only serious damage, the resistance value will change), so a more direct method is the voltage method, the sensor E+E- connected back to the substrate, disconnect S+S-, S+S- to 10,000 millivolts. Of course, the premise is that E+E- power supply is normal, if the 5V voltage between E+E- is abnormal, you can also disconnect, and then directly connect to E+E- with a battery. Then we measured the voltage between S+S- under no load and full load respectively. Theoretical sensor output voltage = exci...

Fast and accurate sensor test method shared by the  Laboratory Balance Supplier . When the electronic scale cannot be weighed, such as the constant reminder of err-6 on the screen, there are still two possibilities, one is the sensor damage, the other is the AD circuit damage. How to quickly and accurately judge the sensor fault or AD circuit fault can greatly improve the maintenance efficiency. The easiest way to find fault components is the substitution method, but whether it is to replace the AD chip or sensor, it will take a lot of time. Now a convenient test method is briefly introduced. Generally, multimeter is used to detect the input and output resistance of the sensor. However, since the damage of most sensors does not affect the input and output resistance, this method does not work well. Now another test method is introduced, which is power on test. If it is a single sensor before it is installed, it only needs to apply a dc voltage between E+E-, and the simples...

Guide to maintenance of electronic weighing apparatus shared by the  Precision Balance Supplier . Electronic weighing apparatus is a digital weight measuring instrument with electronic apparatus. It is composed of: weighing sensor, A/D conversion, single chip microcomputer, display drive, keyboard circuit, multifunction interface circuit, ac/dc/charge/storage/voltage regulator circuit. The phenomena and causes of various faults are various. 1. Don't weigh First check the internal code, check the zero bit and load (such as half load) internal code. If zero has no internal code and half contains internal code, the zero position of the sensor is low. See 10. If the compensation is invalid, the sensor shall be replaced. If there is no internal code, it is sensor fault or AD circuit fault. See 8 for the determination method. Note: if the AD circuit is severely damaged, resulting in no sensor excitation voltage, the sensor output voltage cannot be measured. If the internal code is...