Instrument mechanic

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Instrument mechanics in engineering are tradesmen who specialize in installing, troubleshooting, and repairing instrumentation, automation and control systems. The term "Instrument Mechanic" came about because it was a combination of light mechanical and specialised instrumentation skills. The term is still is used in certain industries; predominantly in industrial process control.

Contents

History

Pneumatic PID (Three term) controller. This type of controller was completely mechanical; hence the expression "instrument mechanic" for someone repair or calibrating it. Pneumatische regelaar.jpg
Pneumatic PID (Three term) controller. This type of controller was completely mechanical; hence the expression "instrument mechanic" for someone repair or calibrating it.
Air-actuated control valves each with a valve positioner to control valve travel. The skills to repair/calibrate require understanding of electronic, control, pneumatic and light mechanical engineering Control valves.jpg
Air-actuated control valves each with a valve positioner to control valve travel. The skills to repair/calibrate require understanding of electronic, control, pneumatic and light mechanical engineering

Instrumentation has existed for hundreds of years in one form or another; the oldest manometer was invented by Evangelista Torricelli in 1643, and the thermometer has been credited to many scientists of about the same period. Over that time, small and large scale industrial plants and manufacturing processes have always needed accurate and reliable process measurements. Originally the demand would only be for measurement instruments, but as process complexity grew, automatic control became more common.

The huge growth in process control instrumentation was boosted by the use of pneumatic controllers, which were used widely after 1930 when Clesson E Mason of the Foxboro Company invented a wide-band pneumatic controller by combining the nozzle and flapper high-gain pneumatic amplifier with negative feedback in a completely mechanical device. The repair and calibration of these devices required both fine mechanical skills and an understanding of the control operation. Likewise the use of control valves with positioners appeared, which required a similar combination of skills.

World War II also brought about a revolution in the use of instrumentation. [1] Further advanced processes requires tighter control than people could provide, and advanced instruments were required to provide measurements in modern processes. Also, the war left industry with a substantially reduced workforce. Industrial instrumentation solved both problems, leading to a rise in its use. Pipe fitters had to learn more about instrumentation and control theory, and a new trade was born. [2]

Today, instrument mechanics combine the skills of repair and calibration with the theoretical understand of how the instrumentation and control works, which is a specialised combination of electronic and mechanical disciplines. Now, almost all new instrumentation is electronic, using either 4-20mA control signals or digital signalling standards, the term instrument mechanic is still used colloquially in some cases.

Terminology

In Canada, journeyman tradesmen who work with instrumentation are called "Instrument Mechanics". In the United States, Australia and elsewhere, they can be called "Instrument fitters". The term may have originated from earlier instrument-qualified people being originally mechanically trained Machinists (also known as a fitter and turner) rather than electricians or "pure" instrument fitters (No secondary trade) as is now the norm.

In the United Kingdom a particular trend has been to call them Electrical/instrument (E/I) craftsmen, with progression to technician level.

Training and regulation of trade

In most countries, the job of an instrument mechanic is a regulated trade for safety reasons due to the many hazards of working with electricity, as well as the dangers posed by incorrectly installed or calibrated instrumentation. The training requires testing, registration, or licensing. Licensing of instrument mechanics is usually controlled through government or educational bodies, and/or professional societies.

The apprenticeship period has been reduced in some cases for Instrumentation Engineering Technologists, who can get their apprenticeship in 2 years rather than 4, depending on the college. In the United Kingdom, the "modern apprenticeship" is 42 months, and requires theory training to National Vocational Qualification (NVQ) level 3.

Canada

In Canada, the trade of Instrumentation and Control technician is included in the Red Seal inter-provincial journeyman program. [3]

The trade itself is called different things in different provinces. The two most popular names are "Industrial Instrument Mechanic" and "Instrumentation and Control Technician", though Alberta and the Northwest Territories call the certification "Instrument Technician", and Saskatchewan and Nunavut call their certification "Industrial Instrument Technician". [4]

The 1995 Agreement on Internal Trade, agreed upon by all provinces except Nunavut, states that each party to the agreement will provide automatic recognition and free access to all workers holding an inter-provincial standards (Red Seal) program qualification. [5]

Although there is a federal agreement, each province implements the program with its own legislation: (Note that these are all Provincial Acts)

Recipients receive a "Certificate of Qualification". [17]

Different provincial jurisdictions may have different regulations. [18]

In Ontario, the Instrumentation and Control apprenticeship program does not contain any restricted skill sets as per Ontario Regulation 565/99, Restricted skill sets. This means that a worker does not need a certificate of apprenticeship or a certificate of qualification to practice the trade. [19]

Training of instrument mechanics follows an apprenticeship model, taking four or five years to progress to fully qualified journeyman level. [20] Typical apprenticeship programs emphasize hands-on work under the supervision of journeymen, but also include a substantial component of classroom training and testing. Training and licensing of instrument mechanics is by province, and some provinces don't have an instrument mechanic licensing program, but provinces recognize qualifications received in others.

Different provincial jurisdictions may have different regulations regarding certification. In Ontario, the On-The-Job training duration for apprentices is 8000 hours, and the in-school training duration is generally 720 hours. One person of journeyman or equivalent status must be working for every apprentice. [21]

Prior to receiving their Journeyman designation, candidates seeking their certificate of qualification must complete a trade exam, testing knowledge of a number of essential skill sets:

The trade exam consists of a number of questions in each of these skill sets.

Australia

Australian instrument fitters are usually re-qualified electricians who complete a 2-year conversion course at an accredited technical college, such as a TAFE, or start as new apprentices with no prior qualifications and complete a 3 year course and a 4 year apprenticeship, in combination with workplace experience of material studied. The first year of the 3 is a basic electrical module, covering AC and DC principals, plus some workshop practicals. The 4th year generally consists of an apprentice choosing a post-trade qualification to study for.

As there is no journeyman accreditation in Australia, at the completion of their trade course, and collection of the required workplace experience, aspirant instrument fitters must pass a "capstone" test, which involves theoretical testing and practical exercises to determine competency. Qualification is recognised with a craft certificate, but not a license in any form.

Other names

Instrument mechanics are sometimes known as:

Fields of study

Instrument mechanics are required to study a large body of knowledge. This includes information on: [24]

Related Research Articles

<span class="mw-page-title-main">Apprenticeship</span> System for training new crafts-people

Apprenticeship is a system for training a new generation of practitioners of a trade or profession with on-the-job training and often some accompanying study. Apprenticeships can also enable practitioners to gain a license to practice in a regulated occupation. Most of their training is done while working for an employer who helps the apprentices learn their trade or profession, in exchange for their continued labor for an agreed period after they have achieved measurable competencies.

<span class="mw-page-title-main">Carpentry</span> Skilled trade

Carpentry is a skilled trade and a craft in which the primary work performed is the cutting, shaping and installation of building materials during the construction of buildings, ships, timber bridges, concrete formwork, etc. Carpenters traditionally worked with natural wood and did rougher work such as framing, but today many other materials are also used and sometimes the finer trades of cabinetmaking and furniture building are considered carpentry. In the United States, 98.5% of carpenters are male, and it was the fourth most male-dominated occupation in the country in 1999. In 2006 in the United States, there were about 1.5 million carpentry positions. Carpenters are usually the first tradesmen on a job and the last to leave. Carpenters normally framed post-and-beam buildings until the end of the 19th century; now this old-fashioned carpentry is called timber framing. Carpenters learn this trade by being employed through an apprenticeship training—normally 4 years—and qualify by successfully completing that country's competence test in places such as the United Kingdom, the United States, Canada, Switzerland, Australia and South Africa. It is also common that the skill can be learned by gaining work experience other than a formal training program, which may be the case in many places.

A journeyman, journeywoman, or journeyperson is a worker, skilled in a given building trade or craft, who has successfully completed an official apprenticeship qualification. Journeymen are considered competent and authorized to work in that field as a fully qualified employee. They earn their license by education, supervised experience and examination. Although journeymen have completed a trade certificate and are allowed to work as employees, they may not yet work as self-employed master craftsmen.

<span class="mw-page-title-main">Electrician</span> Tradesperson specializing in electrical wiring

An electrician is a tradesperson specializing in electrical wiring of buildings, transmission lines, stationary machines, and related equipment. Electricians may be employed in the installation of new electrical components or the maintenance and repair of existing electrical infrastructure. Electricians may also specialize in wiring ships, airplanes, and other mobile platforms, as well as data and cable lines.

<span class="mw-page-title-main">Tradesman</span> Skilled specialist

A tradesman, tradeswoman, or tradesperson is a skilled worker that specializes in a particular trade. Tradesmen usually have work experience, on-the-job training, and often formal vocational education in contrast to an apprentice, who is learning the trade.

<span class="mw-page-title-main">Engineering technologist</span>

An engineering technologist is a professional trained in certain aspects of development and implementation of a respective area of technology. An education in engineering technology concentrates more on application and less on theory than does an engineering education. Engineering technologists often assist engineers; but after years of experience, they can also become engineers. Like engineers, areas where engineering technologists can work include product design, fabrication, and testing. Engineering technologists sometimes rise to senior management positions in industry or become entrepreneurs.

<span class="mw-page-title-main">Master craftsman</span> Occupational rank

Historically, a master craftsman or master tradesman was a member of a guild. The title survives as the highest professional qualification in craft industries.

<span class="mw-page-title-main">Vocational school</span> Higher-level learning institution providing education needed for specific occupations

A vocational school is a type of educational institution, which, depending on the country, may refer to either secondary or post-secondary education designed to provide vocational education or technical skills required to complete the tasks of a particular and specific job. In the case of secondary education, these schools differ from academic high schools which usually prepare students who aim to pursue tertiary education, rather than enter directly into the workforce. With regard to post-secondary education, vocational schools are traditionally distinguished from four-year colleges by their focus on job-specific training to students who are typically bound for one of the skilled trades, rather than providing academic training for students pursuing careers in a professional discipline. While many schools have largely adhered to this convention, the purely vocational focus of other trade schools began to shift in the 1990s "toward a broader preparation that develops the academic" as well as technical skills of their students.

A millwright is a craftsperson or skilled tradesperson who installs, dismantles, maintains, repairs, reassembles, and moves machinery in factories, power plants, and construction sites.

<span class="mw-page-title-main">Mechanic</span> Profession

A mechanic is an artisan, skilled tradesperson, or technician who uses tools to build, maintain, or repair machinery, especially cars.

<span class="mw-page-title-main">Aircraft maintenance technician</span>

In the US, an aircraft maintenance technician (AMT) is a tradesperson and also refers to a licensed technical qualification for carrying out aircraft maintenance. AMTs inspect and perform or supervise maintenance, preventive maintenance, repairs and alteration of aircraft and aircraft systems.

<span class="mw-page-title-main">Glazier</span> Profession

A glazier is a tradesman responsible for cutting, installing, and removing glass. They also refer to blueprints to figure out the size, shape, and location of the glass in the building. They may have to consider the type and size of scaffolding they need to stand on to fit and install the glass. Glaziers may work with glass in various surfaces and settings, such as cutting and installing windows, doors, shower doors, skylights, storefronts, display cases, mirrors, facades, interior walls, ceilings, and tabletops.

<span class="mw-page-title-main">Auto mechanic</span> Occupation

An auto mechanic is a mechanic who services and repairs automobiles, sometimes specializing in one or more automobile brands or sometimes working with any brand. In fixing cars, their main role is to diagnose and repair the problem accurately and quickly. They often have to quote prices for their customers before commencing work or after partial disassembly for inspection. Their job may involve the repair of a specific part or the replacement of one or more parts as assemblies. Basic vehicle maintenance is a fundamental part of a mechanic's work in modern industrialized countries, while in others they are only consulted when a vehicle is already showing signs of malfunction.

<span class="mw-page-title-main">Pipefitter</span>

A pipefitter or steamfitter is a tradesman who installs, assembles, fabricates, maintains, and repairs mechanical piping systems. Pipefitters usually begin as helpers or apprentices. Journeyman pipefitters deal with industrial/commercial/marine piping and heating/cooling systems. Typical industrial process pipe is under high pressure, which requires metals such as carbon steel, stainless steel, and many different alloy metals fused together through precise cutting, threading, grooving, bending, and welding. A plumber concentrates on lower pressure piping systems for sewage and potable tap water in the industrial, commercial, institutional, or residential atmosphere. Utility piping typically consists of copper, PVC, CPVC, polyethylene, and galvanized pipe, which is typically glued, soldered, or threaded. Other types of piping systems include steam, ventilation, hydraulics, chemicals, fuel, and oil.

Industrial training institutes (ITI) and industrial training centers (ITC) are post-secondary schools in India constituted under the Directorate General of Training (DGT), Ministry of Skill Development and Entrepreneurship, Union Government, to provide training in various trades.

<span class="mw-page-title-main">Ontario Association of Certified Engineering Technicians and Technologists</span>

The Ontario Association of Certified Engineering Technicians and Technologists, or OACETT, is a not-for-profit, self-governing organization in Ontario, Canada. It is a professional association that promotes the interests of engineering and applied science technicians and technologists to industry, educational institutions, government and with the public. It currently has 24,000+ members.

The Ontario College of Trades was the regulatory body that governs skilled trades in Ontario. The College officially opened on April 8, 2013 and its activities are mandated by the Ontario College of Trades and Apprenticeship Act, 2009 (OCTAA).

<span class="mw-page-title-main">Red Seal Program</span>

Red Seal Program, specifically known as The Interprovincial Standards Red Seal Program is a program that sets common standards for tradespeople in Canada. It is a partnership between the Canadian federal government, the provinces and the territories.

Apprenticeships have a long tradition in the United Kingdom, dating back to around the 12th century. They flourished in the 14th century and were expanded during the industrial revolution. In modern times, apprenticeships were formalised in 1964 by act of parliament and they continue to be in widespread use to this day.

Apprenticeship programs in the United States are regulated by the Smith–Hughes Act (1917), The National Industrial Recovery Act (1933), and National Apprenticeship Act, also known as the "Fitzgerald Act."

References

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