Bourdon tube pressure gauge ? operating principle
Bourdon tube pressure gauges will be the most frequently used mechanical pressure measuring instruments. Their pressure element is frequently known as a Bourdon tube: The French engineer Eug�ne Bourdon used this functional principle in the middle of the 19th century. It is predicated on an elastic spring, a c-shaped, bent tube having an oval cross-section. […]
High-pressure gauges: New standard, DIN 16001, delivers safety
The German institute for standardisation (Deutsches Institut für Normung) has opened up new territory: Its DIN 16001 is the world’s first standard that deals exclusively with high-pressure gauges. In accordance with the criteria described within it, WIKA is at the forefront of manufacturers, launching two new measuring instruments of this type, the models PG23HP-P and […]
Analogue output signals of pressure sensors 1: 4 … 20 mA
In industrial automation and in pressure sensors in particular, the current signal of 4 … 20 mA is the most frequently used signal for analogue transmission of values. The wide use of this signal is due to its ease of handling and especially its interference resistance.A current signal has a higher EMC interference immunity than […]
What role do valves play in plant safety?
The reliability of a valve is essential for the safety of the entire plant. Almost Today measuring instruments work in conjunction with a valve or a combination of valves. The choice of a high-quality valve is not only essential to ensure the accuracy of the pressure measurement, but also to prevent dangerous leaks or damage […]
Auto Draft
What is the difference between the numerous G 1/4″ threads? And are they compatible among one another? One of my colleagues also often has troubles and gets confused because of all the various G 1/4″ threads which the market has to offer, or which are requested by the customer.The most common G 1/4″ threads at […]
Pressure sensors in drinking water applications – what needs to be considered?
Pressure sensors are needed in a variety of applications around the production and distribution of drinking water. As soon as a pressure sensor comes into contact with drinking water, one wonders, as a user, whether this is allowed. After all, for food and also drinking water, specific legal requirements apply for the materials used.In Germany, […]
International pressure units
You must have already asked yourself once in a while why there are so many different pressure units worldwide: when are they used and which units are used most frequently and where?These questions can be answered quite easily: the SI unit for the physical quantity “pressure” established many years ago (and in many countries prescribed […]
Auto Draft
When calibrating or testing a gauge or transducer with a pneumatic pressure controller it is important to protect the controller from any liquid contaminants which may be present in these devices under test (DUT). A block and bleed valve (BBV) in-line with a coalescing filter is a wonderful way to do that.The potential flow of […]
China Compulsory Certification (CCC) for electrical thermometers
The “China Compulsory Certification (CCC)” is a certification system of the People’s Republic of China. Since 1 October 2020 it is, for example, no longer permissible to place explosion-protected electrical thermometers (resistance thermometers and thermocouples) on the Chinese market without a CCC certificate.Introduced on Efficient , the CCC certification system applies to imported and also […]
What is a pressure transmitter?
The manufacturers of pressure sensors use many different terms for the various designs of measuring instruments, such as pressure sensor, pressure transmitter, pressure transducer, etc.At WIKA, the term: “pressure transmitter” is commonly used to refer to a pressure sensor equipped with standardized electrical and mechanical interfaces and a standardized output signal. Sneak-peek working principle of […]