NEMA Ratings Chart & IP Equivalent Conversion Chart

This post is the third in a series on NEMA enclosure types and the IP code. For more information, read post 1 and post 2.

NEMA and IP rated enclosures protect equipment from the elementsBoth NEMA and IP rated enclosures provide protection for electrical components. However, the two different systems are quite different. This conversion chart illustrates this fact.

As stated in earlier posts, there is no clean way to convert from IP to NEMA or vise versa. Their vocabulary is just different. Each is more specific in different areas, making exact conversion impossible.

However, with a solid understanding of your application, you can successfully make a conversion without adversely affecting enclosure performance. As with anything, it depends on the application, and the reasons behind the rating specification.

The Pressure Types Guide

Vacuum tanker truckPressure types are an important consideration in selecting pressure sensors or gauges for your application. They can seriously affect accuracy if misunderstood. This post will define the five different pressure types, and hopefully clarify which you need for your application.

Gage Pressure

This is the most common pressure type. It measures a positive pressure range, and its zero, or reference, point is set at ambient pressure. It is unaffected by barometric changes because it is open to the air, or vented.

Vacuum Pressure

Another very common pressure type. Like gage pressure, its zero point is...

Ultrasonic Sensors: How They Work

An ultrasonic sensorI remember when a car was a black box. It took me from point A to point B without fussing, and in satisfactory comfort. Then I got my driver’s license. Then I bought my first car. Now I manage the family fleet of two, and the car’s successful performance is quite a bit more critical than it was when I was fifteen.

Ultrasonic sensors, thankfully, are not as complex as cars. However, to many operators and engineers, they are little black boxes. This post aims to explain ultrasonic sensing technology. After all, it’s pretty simple, and it just may help you keep your sensors running optimally.

As you might gather, an ultrasonic sensor works by using the principles of sound. The term ultrasonic actually means ‘above human hearing’, as the sensor uses a frequency that we cannot hear. This is actually important to the function of the sensor, because...