Wednesday, September 7, 2016



When it comes to building automation, a tightly controlled HVAC system helpsmeet energy-efficiency standards and maintain profitability alongwithModern transducers automate the data-gathering process and provide real-timefeedback to optimize building efficiency (it may seem additional burden on home loan owners but infact it will reduce overall running cost) and security while keeping the ownerin control of all equipments within house or miles away. I am trying my best to provide possible link to the gadgets with intention to provide readers a quick look, rather than creating a money making blogging.

When combined, you can set the sensor to notify the hub when a particular event is triggered and the hub can forward the alert to your smartphone.

you may also like    Earthing Systems
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Friday, September 2, 2016


Six Things to Consider before going for Dairy Automation

Today, more people around the world live in cities than in rural areas. The World Health Organisation estimates that by 2030, 6 out of every 10 people will live in a city, and by 2050, this proportion will increase to 7 out of 10 people. The explosive growth of cities and the rapid formation of a large global middle class mean that the consumption of value-added products such as dairy is set to increase dramatically over the next few decades.

Ensuring that global milk production can meet future demands means we need to find even more ways to produce dairy products like milk and other foods more efficiently. The key is sustainability and taking a long-term view of food production in terms of the reduction of environmental impact and also encouraging the economical stability needed to run a business in a competitive market such as food production.

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Friday, September 13, 2013


General Questions - Flashcards Answers

A1: Velocity algorithm
A2: Rotating paddle wheel
A3: Primary controller
A4: Resistive temperature detector (RTD)
A5: Digital
A6: Post-guiding

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Tuesday, September 10, 2013


CFSE sample questions & SIL determination technique

Checkout new link #20 under technical downloads sections-

Link for the same is  - LINK

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General Questions - Flashcards (1)

Here it is another initiative by epc-school. Flashcards are displayed below. Try answer these in comment section. Correct answers will be displayed tomorrow's blog-

Q1: Most commonly used algorithm for digitally executing PID control; the result of taking the difference between two successive iterations of the position algorithm.

Q2: Device for detecting the presence or absence of bulk solids.

Q3: Refers to the feedback controller in the outer loop whose output sets the setpoint for the inner loop controller.

Q4: Device that measures the relationship between electrical resistance and temperature.

Q5: System in which only a number of states are allowed. In binary digital, only two states (0 and 1) are allowed. In the decimal system, only ten states (0 through 9) are allowed.

Q6: Design in which a guide bushing or bushings are fitted into the body, bonnet, and/or bottom flange so as to guide a plug's post.

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Sunday, August 25, 2013


Indian Power Sector – The Issues and Challenges of Skill Enhancement Upgradation of Power Automation Professionals: ISA-Delhi section (Asia Pacific District 14) Vol II Issue I

This First Place Awarded Eassy is placed at the following path:


Any further suggestions are welcome. Also comment the new technologies here not mentioned in the paper.


Wednesday, August 7, 2013


What is Type X, Type Y, Type Z Purge/Pressurization types & their Difference?

What is Purging?
Purging/pressurization systems permit the safe operation of electrical/electronic equipment under hazardous conditions when approved hazardous location equipment is not part of the application or the equipment
is rated but to a lesser hazardous location than is present.Purging is defined as a process of supplying a flow of clean air or an inert gas to the inside of an enclosure or motor to reduce hazardous internal airborne impurities to an acceptable safe level.

Which are the standards which describe the Purging Principals?
There are a few standards regarding purge and pressurization. Within North
America these are:
• NFPA 70 – National Electrical Code, Article 500
• NFPA 496 – Purged and Pressurized Enclosures for Electrical Equipment 1996 Edition
• ISA 12.4-1996 -- Pressurized Enclosures
• UL 698 – Industrial Control Equipment for use in Hazardous Locations, Class I, Gr. A, B, C, D and Class II, Gr. E, F, G
• CSA C22.1 Part 1 – Canadian Electrical Code

In Europe the following standards are to be considered:
• IEC 79-2
• EN 50016
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Monday, April 29, 2013


Top Guided & Cage Guided Valves - By Defination

Top Guided & Cage Guided Valves - By Defination

Refer link below-

Also Check
Quick Facts About Control Valves
“Tips & Tricks” on Control Valves

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Wednesday, January 9, 2013


Difference Between ia & ib Intrinsic Safety Protection

Difference Between ia & ib Intrinsic Safety Protection

ProtectionType ia

Apparatus is designed so that it is suitable for Zone 0 & it will not cause ignition when the maximum permitted values are applied to its terminals:

a)       in normal operation with application of those non-countable faults which give the most
onerous condition;
b)       in normal operation with application of one countable fault and those non-countable faults
which give the most onerous condition; and
c)       in normal operation with application of two countable faults and those non-countable faults which give the most onerous condition.

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E for EPC

1.                  Describe the data sheet development work flow process. 
Start with Rev A and the discipline activity and describe all the way to Rev 0.
2.                  When an engineering department receives a document for the first time, what is the first item on your ‘to-do’ list and why?
3.                  For client, are drawings reviewed in parallel or in series and why?
4.                  When we receive approvals from client and experts for welding documents / inspection / drawings, what is one thing that must be on the drawings before returning to vendor and Why?
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When fluid flows past a thermowell inserted into a pipe or duct, vorticies form at both sides of the well. These vorticies detach, first from one side, and then from the other. This phenomenon is known as the Von
Karmann effect. The frequency of shedding of these vortices is a function of the diameter of the thermowell,
the fluid velocity and, to a lesser extent, the Reynolds number.
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Monday, December 24, 2012


What is Rupture Disk

What is Rupture disk device ?

A non-reclosing pressure relief device actuated by static differential pressure between the inlet and outlet of the device and designed to function by the bursting of a rupture disk. A rupture disk device includes a rupture disk and a rupture disk holder.

A rupture disk holder is the structure which encloses and clamps the rupture disk in Position

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Monday, December 3, 2012


API 500 (PDF)

API 500


Friday, November 30, 2012


General Quationaire (PDF)

Click on the link below for the PDF.


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Wednesday, November 28, 2012


Van Stone Termowells

It is advisable to use full penetration welds for flanged thermowells to achieve the highest fatigue strength rating. Forged thermowells accomplish the same goal without welds, but at a much higher cost. Van Stone style thermowells accomplish this without the cost.

Van Stone termowells are machined from solid bar and are connected using a separate and reusable backing flange. Van Stone termowells mounted between mating flanges for pocess insertion.

This design offers two advantages:

1.       Any weld stress is eliminated.
2.       The slip on flange not being exposed to the process conditions can be of a less expensive material.


·          Chemical, process, apparatus and plantengineering; petrochemical; on/offshore
·          High chemical loads
·          High process loads

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