Companies in the biotechnology, chemical, food processing, petrochemical, oil refining and other industries rely on gauges to keep their operations running properly. For engineers and technicians at these and other facilities, stainless steel pressure gauges serve …
Accuracy
When to Recalibrate Measuring Instrumentation
| Hardy Orzikowski | CalibrationAll measuring devices lose accuracy over time. Therefore, reliable readings require a regular schedule of calibrations. The particular conditions and needs of each application will determine when it is time to recalibrate a measuring instrument. Time isn’t …
Pressure Sensor Accuracy: Watch Out for These 3 Errors
| Robert Lukat | Know-howThree specific types of errors have a negative impact on pressure sensor accuracy. This easy-to-understand video from WIKA explains the difference between zero-point errors, span errors, and non-linearity. Inaccuracies in pressure instrumentation occur when the …
The Problems with Verifying Thermocouple Accuracy During Reactor Startups
| Robert Torgerson | Know-howRefinery operators who work with fixed bed catalysts place a high value on temperature accuracy, but they also don’t want to waste time by taking unnecessary temperature readings. Thus, to better understand any radial temperature differences that may exist during …
Aging and Drift in Type K Thermocouples
| Robert Torgerson | Know-howWith repeated exposure to high temperatures, a type K thermocouple becomes less accurate. Aging is a phenomenon that results in higher-than-accurate temperature readings, while drift results in lower-than-accurate readings. While all type K thermocouples experience …