Setra Blog

Below are terms that are associated with use of transducers and electrical equipment in areas which are defined as hazardous by national rating agencies.

Newly Added Restricted Products Under RoHS2 Affects Manufacturing

In 2013, RoHS2 was created by the European Union legislation, nearly a decade after the original RoHS (Restriction of Hazardous Substances Directive) was implemented.  RoHS2 is merely an evolution of RoHS1 that provides greater clarity on the legal scope of products that should adhere to the hazardous material guidelines. The combination of

Selecting the optimal method to measure liquid tank level is an extremely important decision when starting your project. Making the right choice helps ensure that both vented aboveground and in-ground tanks as well as pressurized tanks work properly. This means that homeowners will receive water for drinking, water will be available to fight fires in remote residential areas, manufacturers will maintain

While it is important to maintain proper relative humidity levels in office buildings for worker comfort and productivity, it is also just as important to maintain proper levels in factories, production facilities and art galleries to protect industrial, commercial and artistic products.

Hydrogen is the most plentiful element in the universe and is now becoming a viable fuel source for many applications. Due to its efficiency and low environmental impact, the interest in hydrogen being the "fuel of the future" continues to grow. The many features and benefits to hydrogen make it an ideal choice for many up-and-coming industrial applications. A few of the more common applications are:

Total Error Band (TEB) is a measurement of worst case error; it is the most comprehensive and concise measurement of a sensors true accuracy over a compensated temperature range.  TEB is extremely important to know when trying to determine how well a sensor will work within a particular design system. By calculating TEB you'll be able to understand the different possibilities for error. Formulating TEB can be tricky if you don't have the right inputs readily available. 

Happy Halloween From Setra

Have you ever wanted to build your own Haunted House or Spooky Trail?

I'm sure we've all thought about it one time or another. You know what I'm talking about. Places like amusement parks, fairs, or even a homemade one that your “Halloween Crazed” neighbors down the street built themselves. But how do they work?

Typically there are many different pressure specifications indicated on a pressure transducer data sheet. Interestingly enough, two of the most important pressure specifications are often easily overlooked; proof and burst pressure. Selecting a pressure transducer without noticing these pressure ranges is one of the top reasons for transducer failure. Both pressure specifications are considered to act as an upper limit for the device’s operating range. So what exactly is the difference between proof and burst pressure?

Absolute pressure is measured relative to a full vacuum (0 PSIA = 14.7 PSIV).  The electrical output of an absolute pressure transducer is 0 VDC at 0 PSIA and full scale output (typically 5 VDC) at full scale pressure (in PSIA).  PSIA (pounds per square inch absolute) is a unit of pressure measured relative to a full vacuum.  A vacuum can refer to any pressure between 0 PSIA and 14.7 PSIA.

Low pressure measurements are required in various applications such as air flow, static duct and cleanroom pressures in HVAC and energy management systems (EMS).  Other applications include use in medical instrumentation, environmental pollution control, boil combustion efficiency and a wide variety of research and development requirements.  Although the focus will center mainly on air flow and pressure, the same principles