Transformer Tap Changing Working Principle
Tap changing in Transformers It is a normal fact that increase in load lead to decrease in the supply voltage. Hence the voltage supplied by the transformer to the load…
Basics of Explosion Protection
Among the variety of products and intermediate products of the chemical and industrial process industries there are many which can form explosive mixtures with other products or with the oxygen…
Identification of Equipment
Equipment intended for use in hazardous areas must be uniquely identified by the manufacturer. To comply with EN 50014 or EN 60079-0 / EN 50020 or EN 60079-11 the equipment must be…
Operational Amplifiers Questions & Answers
1. Explain what is an operational amplifier? An operational amplifier, abbreviated as op-amp, is basically a multi-stage, very high gain, direct-coupled, negative feedback amplifier that uses voltage shunt feedback to…
Basics of Electromagnetic compatibility (EMC)
The measuring electronics of field transmitters like flowmeters are constantly becoming more efficient and more compact. Digital data processing with its microprocessors has opened up new avenues for new communications,…
Difference between TCP/IP Model and OSI Model
TCP/IP is the communication protocol to connect hosts to the Internet, while OSI is a reference model for communication between end users in the network. Transmission Control Protocol is used…
Difference Between LAN and WAN Networks
The two most popular network types today are LAN (Local Area Network) and WAN (Wide Area Network). These two networks are generally classified on the basis of their coverage area.…
Annubar Flow Meter – Principle, Advantages, Disadvantages
Annubar flow meter are sometimes referred to as Averaging pitot tubes and contain multiple pressure tappings to measure average of the flow rate.
Dall Tube Flow Meter – Principle, Advantages, Disadvantages
Dall tube is shortened version of Venturi meter, with a lower pressure drop than orifice plate. Flow rate is determined by measuring pressure drop.
V Cone Flow Meter – Principle, Advantages, Disadvantages
V Cone flow meter is a differential pressure (DP) meter. These flow meters all work according to the same principle of DP flow sensors or devices.
