Facilitate use of electronic scales have been used in various industries, and has been widely used. It not only has high accuracy of measurement and realization of multifunctional, multipurpose. Domestic production of electronic weighing instrument manufacturers has grown to hundreds of homes, mainly in the non-automatic weighing instrument and automatic weighing instrument mainly. Electronic scales has expanded from introducing technology into their own development and design, especially for non-automatic weighing instrument of the weighing displaying controller developed by leaps and bounds. Automatic weighing scales and two categories of non-automatic weighing instrument, and the widespread use of non-automatic weighing instrument on the market. It is mainly used for trade settlement, is the most electronic scales of the masses, for example the widespread use of electronic price computing scales, electronic scales and electronic automobile weighing apparatus; automatic weighing instrument is common in industrial scale, quantitative packing scale, etc. Electronic weighing instrument is mainly composed of weighing display controller, weighing sensor and electrical control components, rational selection of weighing displaycontroller and load cells is the key to determine the quality of the product, which determines the scale's accuracy, reliability and failure factors and other parameters. How to buy electronic scales and weighing display controller that users are most concerned about the issue.

　　Currently sold on the market, weighing selections weighing precision grade (III) scale, display of 3000 minutes with the minimum Division value according to the weighing ranging in size from 1g to 50 kg (for example 15 kg electronic price computing scale the minimum graduation indexing value for 5G). At the time of purchase: as a case of 15 kg electronic price computing scale;

　　1, in the empty scale State and the largest weighing State figures show a steady (not blinking);

　　2, one-third maximum weighing capacity weight (or close to this value) on the weighing table 1/4 (scale divided into 4) test points within the context of digital are the same;

　　3, such as conditional maximum weighing standard weight on the scale counter to test their accuracy;

　　4, close to the maximum weighing capacity of standard weight (or close to this value weights) repeat load 3 times, testing various numbers are consistent;

　　5, press the function key, test the function keys are good contact, get it;

　　Second, weighing display controller selection

　　1, instrument types by its function: has a single function, versatility and special details. As Shanghai Teraoka, yaohua, three points; Toledo Changzhou; Hangzhou Corley, and several weighing displaying controller manufacturer's product quality by national supervision and spot check shows that two consecutive years qualified, quality stable; the new product marks the birth of increasingly strong domestic production capacity of the weighing displaying controller, high starting point of powerful functions.According to the sensor's output signal characteristics can be connected with analogoutput signal of the sensor, but also can connect with digital output signals of sensors, in addition there are valuation function, with the use of a table. Its functional instrument A1---series metering, A2---count and so on.

　　2, multifunction devices and the advantages and disadvantages of single-function meter multi-function meter: it's adapted, can be widely used for various non-automatic electronic weighing instruments blending and automatic electronic weighing instruments. But high cost of hardware support and software development cycle is long, so its high manufacturing costs. Single-function meter: software development cyclesshorter, less hardware, so its low manufacturing cost. Dedicated instrument manufacturing cost between single-function and multifunctional. Use failure rate, comparedto Multipurpose higher.

　　3, select the instrument taking into account problems

　　A, select the type of instrument that should be based on actual need, rather than the more options, the better;

　　B, select make measuring instruments manufacturing license of the product;

　　C weighing display controller, the technical indicators are in line with national standards;

　　D, will focus on the assessment of their compliance with the safety requirements;

　　4 weighing display controller dynamic domestic, international and domestic development and production of the instrument scale is only equipped with a table, while overseas production of the instrument has more than one table at the same time equipped with scales. It supports sharing of software functionality and hardware, manufacturing costs are relatively lower, in use also reduces management costs.

　　5, considerations when developing new instruments, to pay attention to the safety performance of reliability, their technical specifications and measurement should meet the requirements of OIML76 main provisions in international documents, particularly with regard to interference with special emphasis on. General check of purchase of this genus, but reflects that the monitors the technical performance and functionalrequirements of the standard.

　　6, maintenance and the maintenance of proper and timely maintenance is the key toextending equipment life, certain provisions to allow the use of measuring instruments in the environment, in order to avoid innocent damage to your equipment, operating instructions must be read before using the manual and the technique, after theconfirmation, may be used.