Setra Blog

Many of the following technical specifications appear on datasheets for pressure transducers and similar devices. Here we review their technical definitions and relationships.

Root Sum Squares (RSS): accuracy of a pressure transducer is calculated by taking the square root of non-linearity + hysteresis + non-repeatability.

Industrial pressure transducers are used in a wide variety of applications ranging from HVAC/R compressors, refrigeration and variable speed pumps to hydraulic pressure, oil and water. A transducer can be used anywhere there's a pipeline or chamber, its function is to sense and convert pressures into a proportional electrical output signal that is transmitted to monitoring or control system.

With different equipment comes different air pressure testing techniques for measurement. But are you sure if your procedures up to date? This article breaks down specifically what methods need to be implemented for different scenarios. These new steps in calculating

Setra's educational webinars and videos on demand provide helpful information on applications, industry best practices and more. These webinars and videos are just a few of Setra's readily available resources for technical info.

Setra's NEW Industrial Catalog

The new 2014 Industrial Product Catalog is a comprehensive guide that contains the technical data sheets for products commonly used in Industrial applications.

• Section 1.1: General Purpose OEM
• Section 2.1: Test & Measurement
• Section 3.1: Sanitary Pressure
• Section 4.1: Accelerometer
• Section 5.1: Barometric Pressure
• Section 6.1: Very Low Differential Pressure
• Section 7.1: Power Monitoring

The sensing and measurement of physical quantities through small changes in electrical capacitance is scarcely a new concept. The natural benefits of this approach were recognized for many years. But it was not until Setra engineers introduced new materials, new designs, and innovative, dedicated circuitry that the techniques full potential was realized in the practical, real world of pressure measurement.

Here at Setra we realize that each customer is unique and every application has different requirements that necessitate different features in a pressure sensor. We have the best interests of the customer in mind and realize we may not have the best sensor for a particular situation.

Shock & vibration are two potential mechanical problems for pressure transducers.

Shock is a sudden, unexpected impact that transmits energy to a device in a relatively short time interval. For a pressure transducer, that energy passes through the stainless steel up through the housing. Shock may originate from rough transportation and handling, such as by trucks, forklifts and conveyors. Alternately, shock can be caused simply by dropping the transducer on the shop floor or by an assembler slamming a cabinet door adjacent to it. A transducer may not be damaged by a single shock, but can experience fatigue failure with numerous low-level shocks over the course of its life.

Excessively high temperatures are a common source of pressure transducer difficulties.

Like most other electronic equipment, pressure transducers are effected by temperature, shock and vibrations. They consist of numerous components that only function within specified temperature ranges. Transducers exposed to temperatures exceeding those ranges during the assembly process can be adversely affected.

After reviewing the top 5 product considerations (pressure, media, temperature, and environment) in which the pressure transducer will be installed, it’s time to look at transducer construction, circuit design and the pressure transducer manufacturer's supply chain.