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- Are all capacitive sensors for liquid level detection created equal?
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Tag Archives: linear position
In a previous Sensortech post entitled “Hydraulic Cylinder Position Feedback“, we discussed the basic concept of hydraulic cylinder position feedback. In case you might have missed that post, here it is for an encore appearance. Magnetostrictive linear position transducers are commonly … Continue reading
Today’s petrochemical and process industries, like most industries, are striving to increase their capabilities of automation & control, coupled with condition monitoring, across their entire operation. Demands for uptime are increasing and the focus on reliability through redundancy and prediction … Continue reading
Several previous articles here on SENSORTECH have mentioned closed-loop control (Servo-Hydraulic Showcase, Linear Feedback Sensor Applications: The Three M’s). But exactly what does “closed-loop control” mean? How does it compare to open-loop control? I recently ran across an article in … Continue reading
In a previous installment here on SENSORTECH, we explored the three M’s of linear position feedback application (Linear Feedback Sensors – The Three M’s). One of those three M’s stands for Motion Control. When we talk about motion control applications … Continue reading
A question came in recently concerning the maximum recommended cable length for analog sensors. Even as digital interfaces gain popularity, sensors with analog interfaces (0-10V, 4-20 mA, etc.) still represent the overwhelming majority of continuous position sensors used in industrial … Continue reading
I recently had a conversation with a customer that resulted in one of those forehead-slapping “duh” moments for me, and I thought it might be worth passing along. Here’s the story: The customer had an application that required an analog … Continue reading
Hysteresis, resolution, repeatability, non-linearity, null-point, temperature coefficient, accuracy. These are but a handful of the many terms associated with linear position sensors. To the uninitiated, it can be rather daunting. And, unfortunately, there is a lot of room for ambiguity … Continue reading
There are numerous sensor technologies that can be used to provide liquid level feedback; ultrasonic sensors, capacitive sensors, and magnetic reed switches are but a few that spring to mind. For many, if not most, general liquid level applications, these … Continue reading
In a previous entry, I discussed how linear position sensors are used with hydraulic cylinders to provide continuous position feedback. While this is certainly one of the most common ways linear position sensors are used, there are many applications for … Continue reading