Dirty Jobs | Measuring Livestock Manure Level

Imagine that you’re driving down a country road, and you roll down your window to feel the breeze from the wind. You happen to look to your side as you pass a large barn housing dairy cows. Most of us have seen these farms, but many don’t think about what happens to the manure of the animals or how it is utilized in our everyday lives. Manure slurries and lagoons are a vital function of large scale farms for swine, dairy, and poultry.  Continue reading “Dirty Jobs | Measuring Livestock Manure Level”

Understanding Sensor Output Signals

Have you ever wondered why there are a multitude of sensor output signals that can be configured on pressure, temperature, humidity, or gas sensing instrumentation used in process or HVAC applications? Most of these offerings were originally setup to allow sensor manufacturers to better align with the inputs offered by manufacturers of programmable logic controllers (PLCs) and direct digital controllers (DDCs), which are used for controlling processes for both automation and HVAC control.

I’d like to focus on two of the most commonly used output signals and zero in on the advantages and/ or disadvantages these output signals offer. Two of the most commonly used output signals include analog current, typically 4 to 20mA, and analog voltage, typically 0-10V. Continue reading “Understanding Sensor Output Signals”