What is a Flush Diaphragm Pressure Sensor - Flush diaphragm pressure sensors are widely used in the food and chemical industries to avoid dead pockets in machinery and to facilitate cleaning to remove all germs and bacteria.
How Do You Choose an O-Ring? - When installing a pressure sensor it is important to choose the right sealing gasket to give long-life performance.
Why is Sensor Response Time Important? - The response time of a pressure sensor is much faster than that of a pressure gauge. Indeed, in some cases pressure sensors can be too fast to be followed by standard electronics.
What is Interchangeability? - True interchangeability between pressure sensors requires that the signal output of each sensor is preset to give the same output at zero pressure and the same span at full scale.
Why Worry About Ageing? - Even though sensors are designed to operate within the elastic area of the material used and theoretically have infinite lifetimes, all sensors exhibit some level of “drift” (or deregulation) with time.
What is Ratiometric Output? - The span output of an unamplified pressure sensor is essentially ratiometric (or proportional) to the excitation voltage applied
What Defines Sensor Resolution? - Most sensors give an analogue signal output, which in theory has an infinite or limitless resolution. The resolution itself is derived from the electronic equipment that measures the signal from the sensor.
What is Repeatability? - The repeatability error of a pressure sensor defines how good the electrical output is for the same pressure input if tried again and again under the same conditions.
What are Hysteresis Errors? - The hysteresis error of a pressure sensor is the maximum difference in output at any measurement value within the sensor’s specified range when approaching the point first with increasing and then with decreasing pressure.
Linearity or Nonlinearity? - Linearity error is the deviation of the sensor output curve from a specified straight line over a desired pressure range.
How Do You Select a Sensor? - Selecting the correct sensor for any given application, regardless of whether it is a pressure sensor, temperature sensor or load cell, requires answers to a number of questions.