What is the safest way to separate a process and the attached pressure measurement technology? The HSG 253 standard must be applied to this question, and it answers unequivocally: by means of an instrumentation valve with double block & bleed (DBB). This …
Pressure
Pressure and temperature measurement at extremely low ambient temperatures
| Christopher Ott | Know-howStandard pressure gauges and thermometers generally cope with ambient temperatures down to -40 °C. But what must be the features of a mechanical measuring instrument that works perfectly well in polar climates with even lower temperatures? This can be explained using …
CANopen: digital instead of analogue signals
| Markus Heidl | Know-howUnlike an analogue signal, which as a physical quantity can take on continuous values, a digital signal consists of discrete values. Personally, I always think of long strings of zeros and ones floating through space: 0101 0111 0100 1001 0100 1011 0100 0001 0011 1101 …
Filter monitoring: A crucial component for energy-efficient operation
| Jürgen Arndt | Know-howIf the careful use of “energy” as a resource used to be for cost reasons, today there is also increased environmental awareness. All of this also becomes mandatory thanks to legal requirements and the state of the technology. In this article you can read about how …
Electronic differential pressure measurement for level monitoring
| Bernd Reichert | Know-howDifferential pressure measurement is widely used as a method for monitoring the level of closed vessels. In many cases, operators use individual instruments with an output signal or on-site display. In contrast, a more precise and fault-immune solution is the measuring …