How do you identify the H. P. side or inlet of an orifice plate in line?

How do you identify the H. P. side or inlet of an orifice plate in line?
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1 Answer

Answer :

The marking is always done H. P. side of the orifice tab which gives an indication of the H. P. side.
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Related questions

How Do You Identify The H. P. Side Or Inlet Of An Orifice Plate In Line?

Description : How Do You Identify The H. P. Side Or Inlet Of An Orifice Plate In Line?

Last Answer : The marking is always done H. P. side of the orifice tab which gives an indication of the H.P.side.

How do you identify an orifice in the pipe line?

Description : How do you identify an orifice in the pipe line?

Last Answer : An orifice tab is welded on the orifice plate which extends outer of the line giving an indication of the orifice plate.

Why is the orifice tab provided?

Description : Why is the orifice tab provided?

Last Answer : The orifice tab is provided due to the following reasons. Indication of an orifice plate in a line. The orifice diameter is marked on it. The material of the orifice ... differential pressure generated Exhaustive data available Low purchase price and installation cost Easy replacement

What are the different types of orifice plates and state their uses ?

Description : What are the different types of orifice plates and state their uses ?

Last Answer : The different types of orifice plates are : • Concentric. • Segmental. • Eccentric. • Quadrant Edge.

How will you check zero of a level D.P. transmitter while is line ?

Description : How will you check zero of a level D.P. transmitter while is line ? 

Last Answer : ١. Close both the isolation valves. ٢. Open the vent valve on L.P. leg and H.P. leg drain. ٣. Check and adjust zero if necessary. 

How will you commission D.P. transmitter in field in pressurized vessel.

Description : How will you commission D.P. transmitter in field in pressurized vessel.

Last Answer : ١. Close both the isolation valves, Vent the H.P. side. ٢. Fill it with the sealing liquid. ٣. Open the L.P. side vent valve. ٤. Adjust zero with suppression spring. ٥. Close the L.P. side vent valve. ٦. Open both the isolation valves.  

How is D.P. transmitter applied to a close tank ?

Description : How is D.P. transmitter applied to a close tank ?

Last Answer : In close tank the bottom of the tank is connected to the high pressure side of the transmitter and top of the tank in connected to L.P. side of the transmitter. In this way the vessel pressure is balanced.

How will you vent air in the D.P. cell? What if seal pots are used?

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Last Answer : • Air is vented by opening the vent plugs on a liquid service transmitter. • On services where seal pots are used isolate the primary isolation valves and open the vent valves. Fill the line from the transmitter drain plug with a pump.

How do you do a zero check on a D.P. transmitter ?

Description : How do you do a zero check on a D.P. transmitter ?

Last Answer : Close one of the valve either H.P. or L.P. open the equalizing valve. The O/P should read zero.

How do you calibrate a D. P. transmitter?

Description : How do you calibrate a D. P. transmitter?

Last Answer : The following steps are to be taken which calibrating: 1. Adjust zero of the Tx'r. 2. Static pressure test : Give equal pressure on both sides of the transmitter. Zero should not shift. If ... pressure to high pressure side of the transmitter and adjust the span. 6. Adjust zero again if necessary.

What will happen if the displacer has a hole in it while in line ?

Description : What will happen if the displacer has a hole in it while in line ?  

Last Answer : The output will be minimum. 

What will happen if the displacer has fallen down while in line ?

Description : What will happen if the displacer has fallen down while in line ?

Last Answer : The output will be maximum. 

Type of power-line frequency meter composed of vibrating iron reed placed in alternating magnetic field

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Last Answer : Vibrating Reed Type

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Description : This is a method of using a Wheatstone brdige to determine the distance from the test point to a fault in a telephone or telegraph line or cable.

Last Answer : varmeter/reactive VA meter

Type of power-line frequency meter device utilizing a principle of balancing an indicator needle at center of a scale using magnetic fields opposing each other.

Description : Type of power-line frequency meter device utilizing a principle of balancing an indicator needle at center of a scale using magnetic fields opposing each other.

Last Answer : magnetic type

How Do You Identify An Orifice In The Pipe Line?

Description : How Do You Identify An Orifice In The Pipe Line?

Last Answer : An orifice tab is welded on the orifice plate which extends our of the line giving an indication of the orifice plate.

Cd for the orifice plate varies from (A) 0.58 to 0.8 (B) 0.93 to 0.98 (C) 0.2 to 0.3 (D) 0.02 to 0.03

Description : Cd for the orifice plate varies from (A) 0.58 to 0.8 (B) 0.93 to 0.98 (C) 0.2 to 0.3 (D) 0.02 to 0.03

Last Answer : (A) 0.58 to 0.8

Which of the following instrument can be used for measuring speed of a submarine moving in deep sea? (A) Venturimeter (B) Orifice plate (C) Hot wire anemometer (D) Pitot tube

Description : Which of the following instrument can be used for measuring speed of a submarine moving in deep sea? (A) Venturimeter (B) Orifice plate (C) Hot wire anemometer (D) Pitot tube

Last Answer : Answer: Option D

Which of the following instrument can be used for measuring speed of an aeroplane? (A) Venturimeter (B) Orifice plate (C) Pitot tube(D) Rotameter

Description : Which of the following instrument can be used for measuring speed of an aeroplane? (A) Venturimeter (B) Orifice plate (C) Pitot tube (D) Rotameter

Last Answer : Answer: Option C

Which of the following instruments is used to measure flow on the application of Bernoulli's theorem? (A) Venturimeter (B) Orifice plate (C) Nozzle (D) All of the above

Description : Which of the following instruments is used to measure flow on the application of Bernoulli's theorem? (A) Venturimeter (B) Orifice plate (C) Nozzle (D) All of the above

Last Answer : Answer: Option D

Flow of water in a pipe about 3 metres in diameter can be measured by (A) Orifice plate (B) Venturimeter (C) Rotameter (D) Pitot tube

Description : Flow of water in a pipe about 3 metres in diameter can be measured by (A) Orifice plate (B) Venturimeter (C) Rotameter (D) Pitot tube

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Pressure is measured with the help of A. Manometer. C) Thermocouple. B. Ammeter. D) Orifice plate.

Description : Pressure is measured with the help of A. Manometer. C) Thermocouple. B. Ammeter. D) Orifice plate.

Last Answer : manometer

Compare orifice plate with venturi tube with reference to: (i) Working principle (ii) Construction (iii) Cost (iv) Pressure loss

Description : Compare orifice plate with venturi tube with reference to: (i) Working principle (ii) Construction (iii) Cost (iv) Pressure loss

Last Answer : Venturi Flow Meter vs Orifice Plate Meter

Describe the construction of orifice plate flow meter.

Description : Describe the construction of orifice plate flow meter. 

Last Answer : It is variable head flow meter in which the differential pressure is developed by using orifice plate by inserting it in the path of the fluid flow.  Orifice meter is as ... measurement of differential pressure. Thus differential pressure (p1-p2) is directly proportional to the flowrate.

What is a filter used for ?

Description : What is a filter used for ?

Last Answer : The half wave and full wave signals are pulsating D . C . voltages. The use of such voltages is limited to charging batteries, running D. C. motors, and a few other applications. What we really ... voltage from a battery. To get a constant voltage from this, we can use a capacitor input filter. 

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What is transistor ? What are the different types ?

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Last Answer : A transistor is a three lagged semi conductor device. Basically a transistor means (transfer - resister). Whether the transistor is pnp or npn it resembles two diodes (back to back). The one of the left ... transistor : Emitter - Base - Forward Bias. Collector - Base - Reverse Bias. 

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Description : What is CB, CE and CC configuration ?

Last Answer : Buffer : A device or a circuit used to isolate two pt'ne circuits or stages. The emitter follows is a example of buffer. Alpha = IC / IE Beta = IC / IB

How will you test a transistor with a multimeter. ?

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What does a transmitter output start from 3-15 psi or (0.2 - 1 Kg/Cm2) or 4 - 20 ma. etc. ?

Description : What does a transmitter output start from 3-15 psi or (0.2 - 1 Kg/Cm2) or 4 - 20 ma. etc. ? 

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Description : What are Intrinsically safe system ?

Last Answer : Intrinsic safety is a technique for designing electrical equipment for safe use in locations made hazardous by the presence of flammable gas or vapors in air. "Defn. :" Intrinsically safe circuit is ... , unfortunately, been adopted in all countries. However two sets of codes in common use are.  

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Description : What is Furnace Draft control ? 

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Description : What is the difference the a wheatstone bridge and a potentiometer ?

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What is the specialty of thermocouples lead wires ?

Description : What is the specialty of thermocouples lead wires ?

Last Answer : They should be of the same material as the thermocouple.  

What are skin temperature thermocouples ?

Description : What are skin temperature thermocouples ? 

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What type of sensing element would you use to measure very low temperature ?

Description : What type of sensing element would you use to measure very low temperature ?

Last Answer : The sensing element used for measuring very low temperature is R. T. D. ( Resistance Temperature Detector )

How will you calibrate a temp. recorder using a potentiometer ?

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Why are Thermowells used ?

Description : Why are Thermowells used ?

Last Answer : In numerous application it is neither desirable nor practical to expose a temperature sensor directly to a process material. Wells are therefore used to protect against damage corrosion, erosion, abrasion and high pressure processes. A ... 3. Monel. 4. Alloy steal. 5. Hastelloy 'C'.

Why is a converter used in a temp. recorder ?

Description : Why is a converter used in a temp. recorder ? 

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What is burnout feature ? Explain.

Description : What is burnout feature ? Explain.

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What is the constant voltage unit ?

Description : What is the constant voltage unit ?

Last Answer : The constant voltage circuit consists of a rectifier, CR, a filter capacitor C1, followed by two stages of zener regulation. Abridge configuration is provided to 1amp line voltage regulation ... , Thus variations. Resisters R2 and R3 form a bridge that any remoment line voltage effects. 

Draw a potentiometer temp. Measuring circuits and explain its?

Description : Draw a potentiometer temp. Measuring circuits and explain its?  

Last Answer : OPERATION : The input to the instrument is a measurement of some in the processes using a sensing element ( such as thermocouple ) or a device to produce direct voltage, which is the voltage (signal) ... to zero results ( null point ) the balancing ( servo motor is be longer driven )   

What is two wire and three wire R.T.D. system ?

Description : What is two wire and three wire R.T.D. system ?  

Last Answer : Two wire R .T .D. system : Two wire RTD system use for short distance like a compressor field local panel. Three wire System : Three wire system use for long distance coke a field to control Run. The third wire is used for compensation of lead wire resistance. 

What is Pt 100 mean. ?

Description : What is Pt 100 mean. ? 

Last Answer : Pt100 means 100 OHMS at 0'C for a platinum resistance bulb.  

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Description : Explain the working of an Enraf level gauge?

Last Answer : The Enraf precise level gauge are based on servo powered null-balance technique. A displacer serves as a continuous level sensing element. Principle: A displacer with a relative density higher than ... to a remote indicator of which the receiver motor drives a counter indicating level variation.  

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Description : What are the limitations of leveltrol ?

Last Answer : The limitations of a level control that it cannot be used for lengths more than 72 inches.  

What is the used of Suppression and elevation ?

Description : What is the used of Suppression and elevation ?  

Last Answer : Suppression and elevation are used on Level applications where (1) transmitters are not mounted on some level (2) Wet leg. i.e. condensable vapors are present.