The question occasionally arises, in connection with Bourdon tube pressure gauges, about the overload safety of the instruments. This article deals with exceeding the measuring range by up to 30 %. What happens with the pressure gauge? Does it still indicate precisely …
Know-how
Pressure gauges for pharmaceutical processes: Flush-mounted “dry measurement”
| Silvia Weber | Know-howAre pressure gauges suitable for pharmaceutical processes? Yes, if they are available in a version with flush diaphragm element. There are two advantages for a mechanical pressure measurement with this type of instrument: Diaphragm pressure gauges measure “dry” and …
Strap-on thermometer or screw-in thermometer? Temperature measurement of pipelines
| Roland Sachs | Know-howTemperature is by far the most common measurand in the industry. However, there are no general solutions for temperature measurement. Even when designing measuring points on pipelines, many different factors for selecting thermometers must be taken into account. The …
Pressure measurement at extremely low ambient temperatures
| Christopher Ott | Know-howStandard pressure gauges generally cope with ambient temperatures down to -40 °C. But what must be the features of a measuring instrument that works perfectly well in polar climates with even lower temperatures? This can be explained using the WIKA PG23LT pressure …
Temperature switches in machine building: Which type suits?
| Roland Sachs | Know-howTemperature switches are used in machine building and other industrial applications for limiting temperature. They monitor the temperature and react at a predefined point. To protect from overheating they either switch the equipment or machine off or switch on a fan …