Almost all manufacturers use the word sensors for devices that convert various incentives into electrical signals. These can be read by the control system. For any given type of measurement, there are several methods of measurements. Different sensors are available for different measurements. For example, if you need a seismic sensor, contact seismic sensor manufacturers to get the right product.
Selecting the proper sensor and its use are the main factors that determine how well the equipment operates. Here are the six key considerations to make when selecting a sensor.
Accuracy shows how close the sensor reading is to the accurate value. Precision detects minor changes. The precision and accuracy of any given instrumentation system must be accurate in meeting all the requirements. High precision can give a false impression about the reading that it is accurate while it is not. A sensor having more accuracy will be more difficult to use properly. Both accuracy and precision are affected by errors suffered throughout the system.
Choosing the proper sensor requires a good understanding of the environment. You need to first understand which instrument will be operated in the environment. Many sensors may be affected by the non-ideal conditions of a production floor, like:
It is important to consider the environment when selecting the sensor and its packaging, and other options. The seismic equipment for sale measures the ground motion when it is shaken, mostly used to record earthquakes.
Many sensors require power to produce an output signal. Sensors need to provide a power source that will not introduce additional errors.
The world is full of non-ideal realities in sensors. Electrical noise is present more on construction floors. This causes huge readings. Before conversion, signal conditioners and other protective circuits can give some protection from these affects. The usage of conditioners must be examined during the instrumentation design phase because they are sometimes useful, but at other times, it is possible or preferable to handle the signals after conversion.
In sophisticated systems, digital data from the instrumentation system, rather than analog gauges or chart recorders, is desired. The analog to digital converters must be analyzed and matched to the sensors properly, otherwise mistakes will be introduced, and money will be lost by overpaying for precision in one but not in the other. Make sure that ratio-metric and non-ratio metric sensors are properly handled by using compatible converters.
Even if signal conditioning is used, there are many sources of inaccuracy in the sensor and conversion process. Some errors are linear (the impact that is consistent across the measurement range), whereas others are non-linear. To adjust for these faults or to extract the best possible signal from the system, a variety of methods and algorithms can be applied.