No two sensing technologies are built the same and what you have will have unique capabilities which dictate the area it should be used at. Dusty environments make it hard to work with a photoelectric sensor because the reflector or lens will be covered such that the light beam will be messed with. When you are in such an environment, you need an ultrasonic sensor because be it the sensing surface is full of dust or the air is musty and dusty your readings will be highly accurate. The sensors are used widely but mainly in the agricultural industry, food and beverage as well as packaging. It does not matter the field you are working in but rather getting the perfect ultrasonic sensor. In order to control the sensor, there should be different modes and you do not want to make the mistake of taking this for granted. You will probably get a sensor which has been equipped with 3 modes which include the diffuse mode, a thru-beam and retroreflective mode. In many cases, people utilize the diffuse mode.
Once you are comfortable with the modes the sensor has, the next thing you ought to check out is the housing. Housings vary in shapes, the material used to make them and even the size. In order to find the perfect one, consider your environment and the application. Many of the sensors you will find will have a flat pack housing, a cylindrical one or even one that is made in a cubic shape. The main materials used to make the housings are plastic and metal. If you want a sensor that is durable and can hold its ground in high torque, a metal one is the best. When you are working under favorable conditions, an ultrasonic sensor with a plastic housing will get the work done and there is no spending a lot of money in the purchase.
It is crucial to consider the output type because it has an effect on the kind of results you get. You have to decide between analog and switch point output type. Buy thinking about the job, you can know which output type will be preferable. The range of measurement of the sensor is something you should keep in mind too. The larger the transducer the larger the measurement ranger and vice versa. Your budget will affect your choice too. The point is not in buying the most expensive item in the market but what will allow you to do a great job without burning your savings. When you take the time to review what is on offer and consider your objectives and budget, eventually you will come up with something you will be happy to work with.