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According to the characteristics of the sensor output signal, the sensor can be connected with the analog output signal, and the sensor can also be connected with the digital output signal. In addition, there is a pricing function, which has a multi-purpose meter. The single-function meters in the series are A1---meter type, A2---count type.
Single-function meter: The software development cycle is short and the hardware is small, so its manufacturing cost is low.
Dedicated instrumentation; manufacturing costs are between single function and multifunction. In terms of the failure rate, the versatility is higher.
b. Select the product that has obtained the production license for the measuring instrument;
c. All technical indicators are in line with the national standard of weighing display controller;
d. It is important to assess whether it meets the requirements for safety protection;
When developing new instruments, pay attention to the reliability of safety performance. The technical requirements and metrology should meet the requirements of the main provisions of the OIML76 international recommendation document, especially in the area of ​​anti-jamming. This is a general optional check, but it can reflect the technical performance of the display and the standardization of each functional requirement.
Proper use and timely maintenance are the key to prolonging the service life of the equipment. It is necessary to use the measuring instruments in the specified environment. In order to avoid damage to the equipment, the operating instructions and technical instructions must be read before operation. . 
How to choose electronic weighing instrument and weighing instrument reasonably
The convenient use of electronic scales has been used in various industries and has been widely used. It not only has high-precision metering, but also is versatile and versatile. At present, the number of domestic manufacturers of electronic weighing instruments has grown to hundreds, mainly based on non-automatic weighing instruments and automatic weighing instruments.
Electronic weighing instruments have entered the period of self-development and design from the introduction of technology in the past, especially the development of weighing display controllers for non-automatic weighing instruments.
    Weighing instruments are divided into two categories: automatic weighing instruments and non-automatic weighing instruments, and non-automatic weighing instruments are commonly used in the market. It is mainly used for trade settlement, and it is also an electronic weighing instrument that the masses contact with Zui. For example, electronic pricing scales, electronic platform scales and electronic truck scales commonly used therein; automatic weighing instruments are generally more common in industrial and mining enterprises' batching scales and quantitative packaging scales.
    The electronic weighing instrument is mainly composed of weighing display controller, weighing sensor and electrical control. Reasonable selection of weighing display controller and weighing sensor is the key to determine the quality of the product, which determines the accuracy and reliability of the scale. And parameters such as the fault factor.
    How to properly purchase electronic scales and weighing display controllers is a concern for users.
   First, the purchase of electronic scales
    At present, the scales of the scales sold on the market are (III) scales, the display index is generally 3000 divisions, and the zui small scale values ​​vary from 1g to 50 kg depending on the size of the weighing (for example, 15 kg of electronic pricing) Scale its zui small indexing scale value is 5g).
    When purchasing: For example, the electronic price scale of 15 kg is taken as an example; 1. The number is stable under the condition of empty scale and Zui weighing (not blinking); 2. Using a one-third Zui weighing The code (or the weight close to this value) is placed on the weighing platform 1/4 (the scale is divided into 4 parts) to test whether the number of each point is consistent; 3. If there is a condition, take the standard weight of the zui weighing Test the accuracy on the scale surface; 4. Take the standard weight (or the weight close to this value) close to the Zui scale and repeat the loading 3 times to test whether the numbers are consistent; 5. Press each function key to test each Whether the function keys are in good contact and whether the purpose is achieved;
    Second, the weighing display controller purchase
1 , the type of instrument is divided into its functions: there are single function, multi-function and special instrument. Such as Haisigang, Yaohua, three points; Changzhou Toledo; Hangzhou Corey and other weighing display controller production plant quality by national supervision and spot check shows that two consecutive years of qualified, stable quality; the birth of new products The domestic production of weighing display controllers is becoming more and more powerful, with a high starting point and strong functions.
2 , the advantages and disadvantages of multi-function meters and single-function meters Multi-function meters: It is highly adaptable, can be widely used in a variety of non-automatic electronic scales and automatic electronic scales. However, the software development cycle is long and the hardware support cost is high, so its manufacturing cost is high.
3 , choose the instrument to consider the problem a, choose which type of instrument should start from the actual needs, rather than choose more functions as possible;
4 , international and domestic weighing display controller dynamics Domestically developed and produced instruments generally only one meter with a scale, while the instruments produced abroad can already use multiple scales at the same time. Its software features and hardware support can be shared, which in turn reduces manufacturing costs and reduces management costs in use.
    5 , matters needing attention
    6 , maintenance and maintenance