1. The principle of signal transmission in sensors
In analog strain gauges, the signal goes to the device, but without a transducer box, it does not receive a digital value. Therefore, over the distance from the sensor to the box, distortions occur in the signal, which affects the final readings on the terminal. The cause of signal distortion can be various factors: temperature, electrostatics, electromagnetic noise, impulse noise. With a small distance (up to 100 meters) from the equipment, such factors have little effect.
In digital strain gauges, the situation is different, the signal goes immediately in the form of a binary code, therefore there is no influence of the negative factors described above on the final data. Also, such equipment is reliably protected from intruders who introduce devices into the operation of the circuit that affect the voltage, which allows you to change the finished data on the indications of the weight terminal.
2. Communication distance
The recommended distance for analog load cells is 100 meters. The farther the equipment is located, the more distorted the weighing readings will be.
The recommended distance for digital load cells is 1000-1200 meters. Can be further increased without losing readings.
3. Sensor replacement and calibration
When using automobile scales for own accounting, it is possible to replace the digital sensor with subsequent adjustment through the weight terminal. After prescribing the necessary coefficients, the readings will be equated to the accuracy class. Unfortunately, such scales cannot participate in commercial accounting. In case of any significant intervention in the operation of truck scales, an extraordinary state verification is required;
4. Precision load cells
The measurement accuracy in car scales for analog and digital sensors is identical, since such equipment has a common accuracy class, respectively, has the same metrological characteristics.
5. Information from each sensors
Digital sensors make it possible to receive data from each sensor separately, analog sensors do not have such an opportunity, since the summation of the signals takes place in the junction box. Such a function is useful for determining the center of gravity and constructing a mathematical function of the axle load.
6. Equipment price
Analog solutions have a lower cost due to technology.
7. Diagnostics will become sensors
Digital sensors are checked without interruption on the car terminal, you can accurately understand which of the sensors is in the right way, or it will show incorrect data. In order to identify a malfunction of the analog sensor, it is necessary to turn on the skin okremo.
Suggestion: If a buyer buys cheap car tires, then he will install analog sensors. Ale, if the buyer wants to take away the possessions that are stolen, then choose digital
