Instr 12213 Panel-Mounted Instruments

8/13/2019 Instr 12213 Panel-Mounted Instruments

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------Panel-Mounted Instruments

Module 12213



Instrument Trainee Task Module 12213

PANEL-MOUNTED INSTRUMENTS- Objectives

Upon completion of this module, the trainee will be able to:

1. Identify panel location per drawing.2. Identify panel-mounted instruments.3. Lay out instrumentation for installation in te panel.

• !llow for proper spacing for instrumentation and electrical

connections.

". Install instrumentation in panel.#. Install panel at specific location.

$rere%uisites

&uccessful completion of te following 'as( Module)s* is re%uired beforebeginning study of tis 'as( Module+ ,/ ore urricula0 ,/ 'as(Module 12201, Craft-Related Mathematics; ,/ 'as( Module 12202,Instrumentation Drawings and Documents II; ,/ 'as( Module 12203,Princiles of !elding; ,/ 'as( Module 1220", Process Control #heor$%

/e%uired &tudent Materials

1. &tudent Module2% /e%uired &afety %uipment

Instrument 'rainee 'as( Module 12213 2



ourse Map Information

'is course map sows all of te eels of Learning tas( modules in te

second level of te Instrument curricula. 'e suggested training orderbegins at te bottom and proceeds up. &(ill levels increase as a traineeadvances on te course map. 'e training order may be adjusted by telocal 'raining $rogram &ponsor.

ourse Map+ Instrument Level 2

LL 2 OM$L'

$anel-Mounted Instruments 4 Module 12213 3



'!5L O6 O,','&

Section Topic ………………………………………………………………….Page

1.7.7 Introduction

8888888888888888888888888888. #2.7.7 $iping and Instrumentation 9iagrams 88888888888888..

#2.1.7 $:I9 &ymbology88888888888888888888888888;2.1.1 !naly<ing $:I9=s88888888888888888888888888123.7.7 9etermining te Instrument 88888888888888888888

123.1.7 Installing te Instruments 888888888888888888888.

133.1.1 !ccessibility88888888888888888888888888888 1"3.1.2 &afety88888888888888888888888888888888 1"3.2.7 9eveloping Instrument 'emplate 88888888888888888..

1#3.2.1 &electing te $roper 'ools888888888888888888888. 1#3.3.7 5asic 6abrication 'ools88888888888888888888888 1;3.3.1 ommon Lay Out 'ools8888888888888888888888.. 1;3.".7 ommon Instrument $anel 6abrication 'ools 88888888888.

273.".1 >ydraulic ?noc(out $unces88888888888888888888 273.#.7 Lay Out te Measurements

888888888888888888888213.;.7 ec(ing Manufacturer=s Installation Instructions

888888888 [email protected] $reparing a 'emplate

88888888888888888888888.. 22

3.A.7 utting te ontrol $anel 6ace to Mount an Instrument 88888..23".7.7 &electing >anger and &upport Locations 8888888888888..

2@




'rade 'erms Introduced In 'is Module

Fabricate: 'e process of ma(ing a part from materials.

Lay ot: 'o arrange in a definite order or pattern.

Pi!ot "o!e: ! smaller ole tat is drilled first as a guide for a larger drillbit.

1.7.7 I,'/O9B'IO,-

Instrumentation panels can provide a convenient means of placinginstrumentation in a locali<ed area to provide reading of multipleinstruments at one place. 'ese instrument panels can ave only a coupleinstruments up to undreds of indications on one panel. 'e instrumentson te panel can be electrically driven instruments or some type of meterdriven off of a particular force li(e a pressure gauge.

'o install an instrument panel and install te gauges into a panel tetrainee will ave to be able to interpret system drawings and instrumentpysical specifications and re%uirements to properly assemble teinstrument panel.

Instruments can be of various si<es and dimensions. !lso ow instrumentscan be mounted as in flus mounted or surface mounted. !noterparameter of te instrument tat must be loo(ed at is were teinstrument connection points are located.

!long wit te variables tat were mentioned in te previous paragrapstere will be many variables tat will ave to be considered wenconstructing an instrument panel. 'is teCt will cover te areas tat need

addressing and te specifications tat ma(e a reliable instrument panel.




'e first step in fabricating or ordering te instrument panel is identifyingwat instrumentation is to be put on te panel. In order to do tis tetecnician may ave to identify te instrumentation on engineeringdrawings. ! review of drawings will be covered.

2.7.7 $I$I,D !,9 I,&'/BM,'!'IO, 9I!D/!M&-

! $iping and Instrumentation 9iagram )$:I9* depicts te functional layoutof a fluid system and its piping valves instrumentation etc. as clearly andaccurately as possible. It is accurate to te eCtent tat all components areconnected to eac oter as sown in relation to flow pat orientation. !$:I9 does not attempt to represent te actual pysical layout ofe%uipment. ! valve wic may appear to be rigt at te discarge of apump can pysically be located %uite some distance from te pump andon anoter elevation )floor*. Many times owever a $:I9 will use abro(en line encircling a group of e%uipment to indicate tat it is all in onebuilding or all on a Es(idE. !noter name commonly used for $:I9=s is

Ebubble diagramE due to te use of te round symbol for locators andsymbols.

2.1.7 $:I9 &FM5OLODF

! piping and instrumentation diagram depicts all components of aparticular system including pipe si<es flange si<es valve si<es flowdirection and references to oter related diagrams. /ater tan try topictorially include all te valves piping instruments and e%uipment in a

fluid system a $:I9 uses standardi<ed symbols to represent tese items.In te past eac engineering firm migt ave its own set of symbols butover te last 171# years industry standards )!,&I I&! !&M etc.* avebeen developed and adopted to standardi<e te symbology in use. 'esestandards are applied to all types of prints owever $:I9=s still seem tobe subject to te wims of te designer more so tan oter prints. 6or tisreason te legend is very important for piping and instrumentationdiagrams.

'e figures below introduce some of te standard symbols used torepresent te various instruments wic migt appear on a $:I9. 'esymbols used in tis section and many oters are found in I&! standard

##.1 Instrument &ymbols and Identification. &igure 1 lists te standardsymbols used for te signal and process connection lines used in tissection.

Oter general symbols used in instrument loop diagrams are te balloonsymbols listed in &igure 2%

&igure 3 sows some of te more commonly used symbols for variousvalve types. &igure " sows valve actuator symbols.

&ome of te symbols used ave very definite meanings. 6or instance intemperature measurement some of te special symbology are illustratedin &igure '%


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ombining tese symbols togeter measurement cannels and controlcannels can be depicted. &igure ( is a temperature measurementcannel. 'is cannel uses an /'9 as te temperature sensing element.

'e /'9 is enclosed in a termowell tat is connected directly to atemperature transmitter )''*. 'e transmitter senses te resistance of tetemperature sensing element converts te resistance to an electronicsignal eiter current or voltage and transmits tis signal to atemperature recorder )'/* tat is located on te boiler control board.

In &igure ), symbols are used to sow tat te temperature detector )'*a termocouple is enclosed in a termowell. 'e emf produced by tetermocouple is sensed by a millivolt to current transducer mGI. 'etransducer amplifies emf converts it to a current signal and transmits tissignal to a temperature indicator )'I* and a temperature recorder )'/*mounted on te main control panel.

&igure * sows a typical variable ead flow measuring cannel using tese

standard symbols.

6igure 1. Instrument &ignal Line




6igure 2. 5alloon &ymbols




6igure 3. alves




6igure 3. alves )ontinued*




6igure ". !ctuator &ymbols

6igure #. 'emperature Measurement




6igure ;. 'emperature Measuring annel

6igure @. 'emperature Measuring annel

6igure A. ariable->ead 6low HMeasuring annel

!noter type of symbol seen on $:I9=s uses te coordinates of te print toreference anoter print or location on te same print. 'e cross-referencearrow wic refers you to anoter seet normally as te coordinates ofwere you=ll find tat continuation beneat te arrow in parentesis./eference &igure + for an eCample.




6igure . ross /eferencing $rint Locations

2.1.1 !naly<ing $:I9=s

Instruments are sown in circles wit a code for device identificationtypically tere will be a table identifying te code. 'ese codes aresomewat standardi<ed but uncommon codes sould be referenced to telegend. ! format commonly used is illustrated in #ale 1%

3.7.7 9'/MI,I,D '> I,&'/BM,'-

!s stated earlier in te modules te instrument to be mounted to tepanel could be an electronics-driven instrument or an instrument tat isdriven off of a specific force li(e pneumatics or water pressure comingfrom a pump discarge. 'e two types of instruments for mounting andconnecting to te transmitter can be loo(ed at independently.

'e first type of instrument we will discuss is te instrument tat uses asystem force to drive te instrument.

One of te first tings to determine is were te panel is to be located.Once te location is determined te ambient conditions of te area inwic te panel will go sould be loo(ed at. 5efore installing or selecting abourdon tube pressure gauge it must be verified tat te gauge will beoperated wit its specified limits. Operating a gauge outside of its limitscould cause damage to a gauge personal injury or property damage.

!noter verification cec( is to ensure te gauge tat is to be installed iscapable of measuring te pressure )or medium* tat will be applied to it. !

general rule is tat te gauge=s full scale deflection sould be at leasttwice te normal operating pressure and te maCimum operating pressuresould not eCceed @#J of full scale range. 6or eCample an !scroft "1G2171@ ! 1G" ,$' wit a range of 7 to 277 psi sould ave a normaloperating pressure of less tan 177 psi and te maCimum pressure to tegauge sould be less tan 1#7 psi.




TABLE 1

E!I"E IE#TI$I"ATI%#

&%'( 1 )MEA'*+EME#T, &%'( 2- 3- %+ 4 )T.&E,

! !nalysis !larm5 6lame !ctuator or $ositioner

onductivity ontroller9 9ensity 9raftd 9ifferential 9ifferential

oltage lement6 6low Orifice 6langes

D 'ime /elay>

I ategory Indicator

K Load omputer? 'rust $osition ompensator

L Level &ampling

M Manual Multipoint, ,ipple and alveO $osition $rimary lement

$ $ressure $neumatic 'ransmission

p> >2 Ion concentration urrent

/ /adioactivity /ecorderr /atio /atio

& &peed ontrol &elector alve or&witc

' 'emperature 'ransmitter

B ibration alve ell

'est onnection 'ransmitter F Interloc( omputer

N $ump Overload Integrator

'able 1. 9evice Identification

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'e actual location on te panel face were te instrument is to beinstalled is usually decided by engineering or operations altoug tismay not always be te case. 'e trainee at times may be responsible forte design and layout of an instrument panel. en performing tis tas(te installer will ave to arrange te panel in a logical and convenientlayout. 'e instruments sould be placed in a position tat will let teinstrument be easily read and allow access for operation of te instrumentpanel controllers and adjustments. Oter considerations tat will ave tobe considered include+ are tere any oter devices tat will be locatedbeind te panel at type of input output and supply connections aretere and were are tey located 'e connections can sometimes belocated on te front or rear te top or bottom and in some instances

tere may be some on te side. Figure 10 sows two pressureinstruments.




6igure 17. $ressure Instruments

3.1.1 !ccessibility

'e wor(ing space and entrance to te wor( area must be consideredwen locating a local instrument panel. noug space must be left arounda panel so tat normal maintenance and production activities can beperformed.

'e location of a local instrument panel sould allow as muc protectionas possible from overead piping and possible damage from dust dirt orprocess contamination.

WARNING! !n instrument is usually installed in a panel wen te controlpanel is de-energi<ed. 'is situation is of concern wen panelmodifications or additions are to be done. 'ere is concernbecause electrical interference and vibration from power toolscan cause problems wit sensitive control e%uipment andalarms. lectrical soc( to te installer is also a concern wenwor(ing wit energi<ed e%uipment. If at all possible te panelsould be tagged out. are must also be ta(en wile wor(ingaround e%uipment to ensure metal cips do not fall into tee%uipment.

3.1.2 &afety

&ome general safety rules to follow wen locating an instrument panelare+

• 9o not locate te panel in a congested area.

• 9o not locate te panel were it could be damaged by mobile

e%uipment.

• 9o not locate te panel were te panel operator would be standing

on a wet surface.

• 'ry to locate te panel in sigt of te e%uipment te operator iscontrolling0 for eCample a valve.




• 9o not locate te panel on or over drains conduits piping or ducts.

• 9o not install a panel witin 3-1G2E of a andrail.

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$anel instruments vary in si<e sape and weigt. 'ey re%uire differentconsiderations as to panel position and additional support. Mostinstrument manufacturers provide detailed instructions for mounting aninstrument and supporting brac(ets or rac(s.

Many panel instruments come wit a rac( assembly permanently affiCedto te panel. 'is assembly permits easy removal and access to teinstrument itself.

'e following sections will eCplain installing an instrument in apredetermined location in an eCisting panel using a typical manufacturer=s

installation instructions. 'is includes+

• &electing te proper tools

• Laying out te measurements

• Installing te instrument

3.2.1 &electing te $roper 'ools

! good understanding of basic and and power tools is necessary to selectte tools to do a job safely and correctly. ! copy of te manufacturer=sinstallation instructions sould also be obtained to aid in proper tool

selection for a specific job. &igure 11 sows a manufacturer=s installationinstructions.

6igure 11. Manufacturer=s Installation Instructions

'e following sections eCplain te basic measurement and power toolsre%uired to install an instrument in a panel.




3.3.7 5!&I 6!5/I!'IO, 'OOL&

$roper tool selection is important to lay out or fabricate instrumentpanels. Lay out tools are used to measure specific si<es and sapes. 'etools needed to fabricate parts vary wit eac job.

'e measurement tools needed to lay out te measurements for a panelcutout are a scriber steel rule or steel s%uare. ! ammer and centerpunc are also necessary to mar( te oles for drilling.

'e power tools re%uired to cut a panel for instrument installation are anelectric drill and a reciprocating saw. 'e drill is used to cut starting olesfor te saw blade. 'e reciprocating saw is used to ma(e te cutout in tepanel. ! flat metal file may also be needed to clean up any roug spots or

metal burrs from te cutting process.

3.3.1 ommon Lay Out 'ools

Many different tools can be used to lay out and measure instrumentpanels. &ome common lay out tools are+

• &cribers

• &teel rules

• &teel s%uares

• ombination sets• 9ividers

• $ric( punces

• enter punces

• &traigtedges

&cribers 4 &cribers are used to mar( lay out lines by scratcing tem onmetal surfaces. 'ey are made from tool steel and are available indifferent lengts. ! scriber is ground to a needle point and is used wit aandle or older. 'e point of some scribers is bent at a 7-degree angle

to mar( te inside of cylindrical objects. !n oil stone sould be used to(eep a scriber point sarp.

NOTE: 9o not carry or place a scriber into clotes poc(ets unless tepoint of te scriber is ade%uately covered.

Figure 12 sows two types of scribers.




6igure 12. 'wo 'ypes of &cribers

&teel /ules 4 ! steel rule is a tool mar(ed on one or bot sides tomeasure distances. It is also used as a straigtedge to mar( lines. Oneside of a steel rule may be mar(ed in eigts and siCteents and teoter side in tirty-seconds and siCty-fourts. &teel rules are available in

lengts from 1 inc to 1"" inces. Figure 13 sows steel rules.

6igure 13. &teel /ules

&teel rules sould be cleaned wit a solvent and clot. !fter cleaning atin coating of ligtweigt macine oil sould be applied to te rule to(eep it from rusting.

&teel &%aures 4 ! steel s%uare also called a framing s%uare is used tos%uare up large stoc( and patterns. It is also used to lay out and cec(rigt angles and as a rule or straigtedge. 'e two parts of a steel s%uareare a 2"-inc blade and a 1;-inc tongue. 'e blade and tongue aremar(ed in eigts and siCteents of an inc. 6igure 1" sows a steels%uare.




6igure 1". &teel &%uare

&teel &%uares sould be cleaned wit a solvent and clot. !fter cleaning atin coating of ligtweigt macine oil sould be applied to te s%uare to(eep it from rusting.

ombination &ets 4 ! combination set is useful in lay out wor(. It serveste following purposes+

• !s a combination s%uare to lay out "#-degree angles 7-degree

angels and parallel lines.• !s a tool for measuring te eigt of components.

• !s a protractor to measure or lay out angles to witin one degree

accuracy.

• !s a means of locating te centers of round or s%uare bars.

• !s a steel rule level or mar(ing gauge.

! combination set consists of te steel rule or blade a s%uare ead acenter ead and a protractor ead. 'e s%uare ead and sometimes teprotractor ead contain a spirit level. &igure 1' sows a combination set.




Figure 15. Combination Set

! combination set sould be cleaned wit a solvent and clot. !ftercleaning a tin coat of ligtweigt macine oil sould be applied toprevent rust. en not in use te set sould be (ept in a protectivecontainer.

9ividers 4 9ividers are used to transfer measurements to comparedistances and to scribe circles and arcs. 9ividers ave ardened steelpoints attaced to two legs tat can be adjusted by a screw. 9ivider pointssould be (ept sarp.

NOTE: 9o not carry or place dividers into clotes poc(ets unless tepoints of te dividers are ade%uately covered.

Figure 16 sows a divider.




Figure 16. Divider

$ric( $unces 4 ! pric( punc is used wit a ligt ammer to mar(centers and to ma(e small indentations along lay out lines. It is made ofsteel and is about " to ; inces long. ! pric( punc point is ground at an

angle from 37 to ;7 degrees. Figure 17 sows a pric( punc.

Figure 17. Prick Punch

'e point of a pric( punc sould be (ept sarp and at te proper angle. 'e struc( end sould be ground flat and te edge sould be beveled toprevent musrooming.

enter $unces 4 ! center punc is used to enlarge center mar(s madewit a pric( punc )an awl can also be used*. 'is is done so a drill willstart easily wen drilling oles. ! center punc is similar to a pric( punc

but as a blunter point ground at a 7-degree angle. Figure 18 sows a

center punc.

'e point of te center punc sould be (ept sarpened to te properangle. 'e struc( end sould be beveled to prevent musrooming.

6igure 1A. enter $unc

&traigtedges 4 ! straigtedge is a piece of flat metal wit te edgesmacined perfectly straigt and is used to cec( macined surfaces for




flatness or straigtness. It is also used to clamp along te edge of a piece

of metal as a reference line from wic oter lines are scribed. Figure 19sows a straigtedge.

6igure 1. &traigtedge

! straigtedge sould be cleaned wit a solvent and clot. ! tin coat ofligtweigt macine oil sould be applied to prevent rust. ! straigtedgesould be stored in a wooden cover wen not in use.

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Most instrument panels are constructed of steel or aluminum seets.Modification or fabrication of tese panels re%uires te use of tools tatwill cut tis type of material. 'e most common tool used to fabricateinstrument panels is a ole saw.

3.".1 >ydraulic ?noc(out $unces

>ydraulic (noc(out punces are powered by a ydraulic pump. 'esepunces use te same dies and punces as manual (noc(out punces.>ydraulic (noc(out punces are usually used to ma(e large oles and to

punc troug tic( metal seeting. Figure 20 sows andoperated andfoot-operated ydraulic (noc(out drives.

6igure 27. >ydraulic ?noc(out 9rives




3.#.7 L!F OB' '> M!&B/M,'&

Lay out is usually te first step performed wen installing an instrument. Itincludes measuring and mar(ing lines centers or circles on te panel to

sow te si<e and sape of te ole needed to mount te instrument.Laying out a panel for instrument installation re%uired cec(ing temanufacturerPs installation instructions and preparing a template.

3.;.7 >?I,D M!,B6!'B//P& I,&'!LL!'IO, I,&'/B'IO,&

ManufacturerPs installation instructions provide information re%uired to layout te measurements wen installing an instrument in a panel.

&igure 21 sows an eCample of manufacturerPs installation instructions.

'e installation instructions for an instrument sow te eCact cutout si<e

re%uired in a panel to mount an instrument. In 6igure 21 tese dimensionsare AQ inces wide by 17-1GA inces long. 6igure 21 also sows tat teinstrument can be mounted in a 1G1; H to #GA-inc tic( panel. 'is figuresows tree mounting brac(ets are provided wit te instrument. 6or tiseCample installation te eCisting control panel is 3G1;-inc aluminum.

NOTE: 5e sure doors will close properly.

NOTE: 5e sure panel is environmentally secure.

NOTE: Most panel-mounted instruments come wit necessarymounting.

NOTE: 5e aware of area classifications of enclosures )panel*.

6igure 21. Manufacturer=s Installation Instructions

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! template is a full-si<e pattern used in instrument installation to sowwere oles sould be punced or drilled. 'ey are also used to sowwere cuts or bends sould be made in a panel. 'emplates are made froms(etces or drawings. 'ey are usually made of eavy paper cardboardor ligt metal and are ten placed on te material to be cut or drilled.

6ollow tese steps to prepare a template for te eCample installation.

Step # Bsing a metal s%uare and a pencil draw an A-1G2 inc by 17-1GAinc rectangle on a piece of cardboard or paper.

NOTE: 'ese rectangle dimensions were provided in te eCample

manufacturer=s installation instructions sown in Figure 21.

Step $ ut away te eCcess paper or cardboard. Figure 22 sows atemplate.

6igure 22. 'emplate

3.A.7 B''I,D '> O,'/OL $!,L 6! 'O MOB,' !,I,&'/BM,'

Once te position of an instrument to be mounted and all tespecifications are met ensuring tat clearances for oo(ups andconnections will be proper mount te instrument to te panel for a flusmounted instrument and using a template tat will be developed using teprocedure discussed earlier.

'e first ting tat must be done is place te template over te panel faceand secure it to te panel wit tape. Bsing a scribe trace te outline of

te template as sown in &igure 23. 9o not cut te tape olding tetemplate. 'e lines can be connected wit te scribe after te template is




removed.

/emove te template from te panel. ,ow retrace te lines on te panelfrom te template using te scriber and metal rule.

'e si<e of te blades te reciprocating saw will use determines te si<e ofole to be drilled in te panel. 'ese oles must be large enoug for tesaw blade to be fully inserted into te ole. 'is allows te saw to be eldflat against te panel surface. 'e saw manufacturer usually provides aguide eCplaining te blade needed to cut a particular material. 'e sawblade eigt in tis eCample is 1G" inc. 'is will re%uire a #G1;-inc ole.

Measure out 3G1;-inc in bot directions along te scribed lines from tecorner point of te layout pattern. &cribe lines into te inside of tepattern from tese measured points until tey intersect. 'e end resultsould loo( li(e &igure 2"%

6igure 23. >ow to &cribe a Line




6igure 2". Intersecting Lines

enter punc is used at te point were te lines intersect in all four

corners using te center punc and ammer. Figure 25 sows te centerpunc mar(s. 'ese will allow ease and accuracy wen drilling oles intote panel.

6igure 2#. enter $unc Mar(s

9rill a pilot hole at all four center punc mar(s wit an electric drill and a

1GA-inc drill bit.




WARNING! Ma(e sure te drill bit does not contact any e%uipment as itpasses troug te panel. ! severe electrical soc( couldoccur.

,ow te initial tap oles are drilled. /edrill all four oles wit an electric

drill and a #G1;-inc bit. Figure 26 sows te oles drilled in te panel.

'e neCt step is to cut te panel to te correct si<e. Insert a reciprocatingsaw into te #G1;-inc drilled ole and old it flat against te panel. $resste saw trigger and cut to te outside or panel side of te scribed linewit a ligt steady pressure in te direction of te cut. ut all te way

down te line to te neCt ole. Figure 27 sows te saw cutting te line.9o not try to pull te saw troug te metal. 'is could cause te bladesto eat up and brea(. /epeat te cutting procedure for eac side of tepanel until te ole is complete.

6igure 2;. >oles 9rilled in $anel




6igure 2@. &aw cutting Line

WARNING! !n assistant sould be present to old te cut-out piece ofmetal wen it is ready to come out. 'is will prevent it fromfalling and damaging eCisting e%uipment or causing injury toyour foot.

&moot out te ole if necessary using a flat metal file. /emove anyeCcess metal tat may be in te corners of te ole. Ma(e sure tetemplate passes easily troug te ole. lean up all metal particles infront of and beind te panel.it te ole properly si<ed cleaned and smoot remove te treemounting brac(ets tat are supplied wit te instrument. &lide teinstrument into te ole and ave someone old it flat and securelyagainst te panel. If te instrument will not fit into te ole use a metalfile to remove eCcess metal and clean te area again.

/eattac te mounting brac(ets and secure tem from beind te panel.

".7.7 &L'I,D >!,D/ !,9 &B$$O/' LO!'IO,&-

&upport locations depend on pipe si<e piping configuration location ofeavy valves fittings or components and te building structure availablefor supporting te pipe. !n engineer or designer must select te locationbased on teir best judgment since no firm rules eCist tat will fiC angeror support locations. 'e Manufacturers &tandardi<ation &ociety &tandard$ractice-#A Pie angers and .uorts - Materials and Designs /M.. .P-'*; M&& &$-;, Pie angers and .uorts, &arication and InstallationPractice; M&& &$-7, uidelines on #erminolog$ for Pie - angers and.uorts !,&I 531.1 and te !&M 5oiler and $ressure essel ode&ection III &ubsection ,6 are te most widely recogni<ed standards forpipe angers and supports.






/eferences

6or advanced study of topics covered in tis 'as( Module te followingwor(s are suggested+

Instrument Engineers Handbook, ilton 5oo( ompany $ennsylvania1A2.

&L6->? /I G $/!'I B&'IO,&

1. !fter cutting a ole into an instrument panel te ole sould besmootened using a flat metal file.a. 'rue.b. 6alse.

2. ic of te symbols below designates a panel-mountedinstrument on a $:I9

3. ic of te following tools are used to lay out and cec( rigtanglesa. &teel rule

b. &%uarec. 9ividers




d. &cribers

". ic of te following describes te purpose of a template used tomount instruments to a panela. &ows were all te oles sould be punced.b. &ows were all cuts sould be made.c. &ows all dimensions.d. !ll of te above.

#. y sould a center punc be used wen ma(ing oles in te panelfor mounting instrumentsa. 'o ma(e te ole a precise si<e.b. 'o ma(e te initial ole troug te panel.c. 'o allow ease and accuracy wen drilling.d. !ll of te above.

$/6O/M!, G L!5O/!'O/F /I&&

1. Install a panel-mounted instrument into a panel.&tep 1 Interpret system drawings and instrument tecnical

specifications to verify tat te instrument to be installed iscorrectly identified.

&tep 2 ec( manufacturerPs installation instructions.&tep 3 erify tat pysical re%uirements allow te instrument to be

installed.&tep " Lay out te proper tools for te installation.&tep # 6ollow te manufacturerPs installation instructions.&tep ; >ave installation cec(ed by te instructor.

!,&/& 'O &L6->? /I G $/!'I B&'IO,&

1. a2. c3. b". d#. c