The weighing transmitter is to isolate the signal of the weighing sensor and transmit it to the user-specified standard DC signal output. The instrument is widely used in data acquisition, signal transmission conversion and distributed weighing control system and batching system, mainly used in cement , Concrete, glass, paper, plastic, chemical, metallurgy, non-ferrous, cotton spinning, experimental machine and other industries weighing type material level, weight load, tension, tension and pressure signal transmission, transmission, detection, etc. Used to improve and supplement the system Simulate the function of I\/O plug-in, improve the anti-interference ability of the system, and ensure the stability and reliability of the system. So what is the selection standard for weighing transmitters?

Accuracy:That is, the scale of the weighing scale must meet the needs of the product, otherwise the weighed object will be inaccurate. The accuracy required for different weighing objects is also different, weighing coal, weighing ore may be accurate to the gram Enough. But the request for weighing gold and medicine must be very accurate. Therefore, the accuracy is not as accurate as possible, it can only meet your product weighing needs.

Many weighing AD modules on the market do not have the accuracy marked, and even some small businesses do not even understand what the accuracy is. Ordinarily, regarding the accuracy of weighing AD modules, we are accustomed to using tens of thousands of them. The method is calibrated. For example, the accuracy is 1\/50000 (@10hz), it should be stated that the accuracy should be more meaningful at the sampling rate of a few. The above example clearly states that it is under 10hz.

Sampling rate:

That is, a cycle can be sampled several times. Many heavy transmitters support different sampling rates of 5\/10\/20\/40\/80Hz. What is the concept of 80Hz? It supports 80 samples in 1 second. That is, it can be completed once in 12.5ms. Data reading. The sampling rate is inversely proportional to the accuracy. That is, the faster the sampling, the lower the accuracy, and the weighing is inaccurate.

Whether the sampling rate of the weighing AD is fast, then your weighing equipment is fast, this is not necessarily. In a weighing system, it should be used with sensors, plc, and mechanical mechanisms. Sometimes weighing AD is enough Fast, but other parts are very slow, so the whole will not be fast. So when choosing to weigh AD, the product that suits me is the best.

Speaking of stability:

How to understand the stability is to adapt to your working conditions. Some products do not have a complete maintenance circuit, do not filter, and are not waterproof and dustproof. Once used in the customer's working conditions, it is found that they are affected by environmental factors, interference Reading, inaccurate weighing, skipping the watch, etc. occur.

Price:

Finally, the product is made to be sold. Cost control is also very important, that is, to meet the above needs, the lower the price as possible, the better.