HP3070 TESTER

Relief and Safety Valves Relief and safety valves prevent equipment damage by relieving accidental over-pressurization of fluid systems. The main difference between a relief valve and a safety valve is the extent of opening at the set point pressure. A relief valve gradually opens as the inlet pressure increases above the set point. A relief valve opens only as necessary to relieve the over-pressure condition. A safety valve, illustrated in Figure 29, rapidly pops fully open as soon as the pressure setting is reached. A safety valve will stay fully open until the pressure drops below a reset pressure. The reset pressure is lower than the actuating pressure set point. The difference between the actuating pressure set point and the pressure at which the safety valve resets is called blowdown .Blowdown is expressed as a percentage of the actuating pressure set point. Relief valves are typically used for incompressible fluids such as water or oil. Safety valves are typically used for ...

Siemens PLC Programming OBs in Siemens TIA Portal Blocks The programmable logic controller provides various types of blocks in which the user program and the related data can be stored. Depending on the requirements of the process, the program can be structured in different blocks. You can use the entire operation set in all blocks (FB, FC and OB). Organization blocks (OBs) Organization blocks (OBs) form the interface between the operating system and the user program. The entire program can be stored in OB1 that is cyclically called by the operating system (linear program) or the program can be divided and stored in several blocks (structured program). There are many different OBs executing as per different conditions and its priority. Function (FCs) A function (FC) contains a partial functionality of the program. It is possible to program functions so that they can be assigned parameters. As a result, functions are also suited for programming recurring, complex partial functionalities...

Eddy Current According to Faraday's and Lenz's law, when varying magentic field is subjected to a conducting loop, emf of different magnitude is induced in the conducting loop. The potential differential of the induced emf cause current to flow in the conducting loop. The current set up by this mechanism is called the eddy current. The eddy current flows in a closed loop, perpendicular to the magnetic field.The eddy current is also called Foucault's current. The eddy current circulates in the conducting loop like swirling eddies in a stream. The eddy current can be harmful in the case of electrical machines, however eddy current can be benefecial as well. The eddy current cause undesired heating in electrical machines like transformer, induction motor and generator and, thus it lowers the efficiency of the electrical machine. However, there are numerious application where eddy current principle is used. The eddy current is used in various inductrial processs like induction ...

Rules:  • Each topic should be clearly headlined. • Important words or phrases should be written in bold letters. • Justifying Pictures should be pasted related to each topic. • Wherever charts are required, they should be scaled and made on separated pages. Chapter 1 THE HOTEL & CATERING INDUSTRY A. Introduction to the Hotel Industry B. Global hospitality industry C. Indian hospitality industry D. Role of Catering establishment in the travel/tourism industry E. Types of F&B operations F. Classification of Commercial, Residential/Non-residential G. Welfare Catering - Industrial/Institutional/Transport such as air, road, rail, sea, etc. H. Organization of food and beverage catering industry (Structure of the catering industry)- a brief description of each Note: add pictures related to each topics Chapter 2 DEPARTMENTAL ORGANISATION & STAFFING A. Organisation of F&B department of hotel B. Principal staff of various types of F&B op...

PINEAPPLE AU RHUM • FIRM RIPE PINEAPPLE – 2 NOS • 50gm Butter • 50gm caster sugar or two sugar cubes • 1 measure rum PROCEDURE • Melt butter and add caster sugar , let it caramelize to form a sauce.Add pineapple juice. Cook till it gets sauce consistency. Put the Pineapple slice in the pan sprinkle caster sugar on it. • Add the rum and flame it by tilting the pan. • Serve with the flame. http://news.chivindo.com/439/pineapple-au-rhum.html

Tap changer adalah alat perubah perbandingan transformasi untuk mendapatkan tegangan operasi sekunder yang lebih baik (diinginkan) dari tegangan jaringan / primer yang berubah-ubah. Untuk memenuhi kualitas tegangan pelayanan sesuai kebutuhan konsumen (PLN Distribusi), tegangan keluaran (sekunder) transformator harus dapat dirubah sesuai keinginan. Untuk memenuhi hal tersebut, maka pada salah satu atau pada kedua sisi belitan transformator dibuat tap (penyadap) untuk merubah perbandingan transformasi (rasio) trafo. Ada dua cara kerja tap changer: 1. Mengubah tap dalam keadaan trafo tanpa beban. Tap changer yang hanya bisa beroperasi untuk memindahkan tap transformator dalam keadaan transformator tidak berbeban, disebut “Off Load Tap Changer” dan hanya dapat dioperasikan manual (Gambar 1). 2. Mengubah tap dalam keadaan trafo berbeban. Tap changer yang dapat beroperasi untuk memindahkan tap transformator, dalam keadaan transformator berbeban, disebut “On Load Tap Changer...

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