Advantages of comparing digital sensors with analog sensors

What are the advantages of digital sensors

Digital weighing scales are gradually replacing traditional model weighing scales. As the main electronic component, what are the advantages of digital sensors?

1、 Strong resistance, high reliability, and good lightning protection performance

The power supply for analog sensors is output from the instrument, and the quality of the power supply is affected by the instrument. They are also susceptible to electromagnetic interference and surges between them. The instability of the power supply also has a significant impact on the output of the sensor, which can easily cause output instability. Instantaneous high voltage can also cause damage to the sensor. The digital sensor adopts a new welding manufacturing technology and is also filled with helium gas to protect the safety of the circuit, with a very high protection level. In order to prevent interference from lightning surges, it reprocesses the output voltage of the instrument to meet the power supply voltage requirements of the sensor, so that the output signal is stable and the sensor will not be damaged.

2、 Exemption from calibration

When the weighing sensor is brought to the site, without a suitable counterweight system, it is generally difficult to calibrate it. If it is not calibrated, the error will be significant. Analog sensors must be calibrated on site due to losses during the on-site wiring process. Nowadays, digital sensors can be exempted from this job because they have been calibrated with standard force measuring machines in production, and their output corresponds to the standard value. Due to its minimal loss in transmission engineering, the read value is the actual measured value, which eliminates the need for calibration.

3、 Long transmission distance, fast communication speed, and prevention

Traditional analog weighing sensors have small output signals, usually in the millivolt range. During transmission, due to the influence of cable resistance, the signal is also lost and susceptible to interference from the surrounding environment, making long-distance transmission impossible. It has many signal modes, which are generally difficult to control. The signal output of digital weighing sensors adopts digital quantity, which not only has a high level and is minimally affected by interference, but also uses fieldbus technology with ultra fast communication speed and communication error correction function. Due to the confidentiality of the communication protocol, it is basically impossible to obtain reliable data.

4、 Easy maintenance and low overall cost of use

The digital weighing sensor is connected to the cable using standard plugs, which not only ensures the protection level, but also makes it very convenient to replace the sensor or cable. At the same time, due to its output digital quantity, it is not affected by the length of the cable. However, the temperature compensation of analog sensors is integrated with the cable, and random connection after cable damage can cause errors. Therefore, many sensors are connected together with cables, and when replacing them, they need to be rewired, which is very inconvenient to use. Now it seems that although digital sensors have more circuit boards than analog sensors, they do not require calibration during use, greatly reduce debugging time, have higher reliability, and also have self diagnostic functions. For some units that cannot be stopped in production, they can still ensure uninterrupted work and save production costs. Therefore, overall, the overall cost of using them is lower than that of analog sensors.

5、 Can work continuously without interruption

The digital sensor has a fault reporting function. Once a fault occurs, it will output a signal to the instrument. The instrument can receive the signal and discard its value to automatically start an uninterrupted working mode, still ensuring a certain degree of accuracy. Users can also know which sensor needs to be replaced at any time, without causing production stagnation. However, analog sensors cannot meet such requirements. Once they fail, it will cause production downtime and affect factory efficiency.