electrical analog meter movements still available - · pdf fileelectrical analog meter...

Electrical Analog Meter

Movements Still AvailableMovements Still Available

PREFAG Offers Moving Coil Meter

Movements Also For Repair / Exchange

Time / cost pressure to change from

classic analog to glass cockpit

� Reasons:

� Meter movements are obsolete

� Available meter movements are extremely expensive

� Poor service of many instrument/meter movement� Poor service of many instrument/meter movement

manufacturers

� More and more instrument OEM go out of this

business thus the pressure rises even more

207/2008

Changing the analog cockpit to glass

� This means for the owner:� This means for the owner:

� High investment

� Down time of aircraft

� To get used to new equipment

� New and costly training is required

� Where required high approval cost

� Many owners still prefer the analog cockpit

� There is a way out of this dilemma307/2008

PREFAG offers moving coil meter movements

for aircraft applications

� We provide PREFAG design replacement of the meter

movement for your instrument

� Solutions already designed for many commonly

known movementsknown movements

� If required, partners in the US and Europe can do the

instrument integration or support the PMA and process

spec. procedures

407/2008

PREFAG – more than 50 years experience in

moving coil meter movements

� All major instrument manufacturers have placed series or prototypeorders resp. have running integration projects with PREFAG:

� Germany: Diehl Avionik, Entrak, MTK, German Airforce, Grob

� Spain: Casa

� France: Thales, Thales CLI, Intertechnique, Faure Herman, Falgayras

UK: Weston Aerospace*, Smith Industries*� UK: Weston Aerospace*, Smith Industries*

� Italy: Farem, Galileo Avionica*

� USA: MCI, AAIC, Ametek, Moog Components Group (Litton), Hickok*,

Horizon-Flight Line (Lewis Engineering), Phaostron, L3 Communications

* Components and/or meter movements

507/2008

PREFAG – more than 50 years of experience in


� PREFAG meter movements are used today in many aircraft in:

� General Aviation � Turbo Prop

� Commercial Aviation � Helicopter

� Military � Jet

� Military Jet� Military Jet

� With this, PREFAG can be THE partner for replacement metermovements needed by the MRO industry for avionics and indicators

* Please see the „applications list“ in our brochure

607/2008

PREFAG meter movements are flying

today in functions as:

� Double Indicator – Oil pressure and temp

� Triple Indicator- NR/NTL

� Triple Indicator – Brake system

� Artificial horizon as glide slope indicator or NAV, G/S warning flag

� Flap position indicator

� Mass moment indicator (in project), or NR rotor indicator

� Fuel consumption, quantity, pressure and/or temp indicator

� Waste water indicator, and/or cabin temp indicator

� Oxygen indicator for liquid oxygen

� Volt and Ampere meter, ….. and so on

707/2008

PREFAG holds a fully integrated

quality assurance system

� ISO 9001: 2000 certified

� EASA Part 21G certified

� No other meter movement manufacturer and only few instrument manufacturers

have such aviation certification

� All aviation related documents marked for special awareness

� Digital image processing test stand, for 100 % documented tests of:

� Linearity

� Friction

� Resistance and sensitivity

� Pointer balance

� Adhesion to pointer stop807/2008

PREFAG holds up a fully integrated


� All meter movements in principle are capable to meet the requirements of MIL-PFR 10304 F, MIL-STD 202 F, MIL-STD 810 F and RTCA DO 160 D testing – depending on case design

� Solder joints in accordance with to IPC-A-610� Solder joints in accordance with to IPC-A-610

� Video supported pivot end-play adjustment

� Full marking of each movement also with your reference

� Risk analysis of all components of meter movements

907/2008

PREFAG holds a fully integrated


� All movements min. class 2 %

� For most designs class 1 % possible

� Full material traceability down to the raw material

certificates of any componentcertificates of any component

� Initial Sample Inspection Report (ISIR) for all new products

� Environmental test facilities available

1007/2008

PREFAG offers an unique and flexible range of


� PREFAG movements can be adapted to your instrument‘s mechanical

and electrical requirements

� Volume defining parts are machined in most designs for high

adaption/modification flexibility

� Alternatively, base and scale adapters can be made in any technology� Alternatively, base and scale adapters can be made in any technology

� All other components remain unchanged as „mass production items“, thus

� Lower design and component cost

� High reliability due to known design

� Quick turn around time on prototypes for approval support

1107/2008



� Wide angle

� 240° for 2222 2“ case

� 250° for 2222 1,25“ case� 250° for 2222 1,25“ case

� 230°/240° for 2222 1“ case

1207/2008



� Wide angle

� 170° for 2222 1“ case

original

� Or as dual-movement movement

side-by-side in 2222 2“side-by-side in 2222 2“

case with .5“ distance

PREFAG replacement

movement 1307/2008



� Short angle

� 90° from 2222 .66“ case

� 110° for 2222 1“ or 2“ case

− both as on-off flag or

with linear measuring dial

1407/2008



� Edge wise

� 60° with .5“

profile height

1507/2008



� Multiple movement combinations

� e. g. dual 240° for 2“ case with same center of rotation

1607/2008



� Multiple movement combinations

� e. g. dual 170° for 2“ case

� e. g. triple 110° for 2,5“ case

1707/2008

PREFAG movements offer unique quality

and life-time relevant features

� Suspension� All pivot and spring loaded jewel

� Tungsten carbide vs. sapphire

� Radii and spring rate optimized for aviation

� No taut bands that could break in transport or operation

� Damping� Damping� 5 different coil form materials

� Short-cut coil for damping if needed

� Moving element alignment� Self-centering crimp-on pivot holder

� Fixture oriented riveting of pointer arm to pivot holder

1807/2008

PREFAG movements offer unique quality

and life-time relevant features

� Pivot end play� Play free and vibration proof thread of bearing in POM zero adjuster

bushing

� Video supported adjustment

� Insulation� Both, springs and zero adjusters insulated� Both, springs and zero adjusters insulated

� Coil formers anodized or coated for insulation

� Screw and press-fit locking� Loctite with UV-Tracer for inspection used on:

− Magnet-press-fit section of wide angle movements

− All mounting screws

1907/2008

PREFAG offers product AND service

� Most modern organization of production work flow by

One-Piece-Flow

� Efficient production of series as well as one-off‘s

� Product families, only the exotic component need stocking for quick � Product families, only the exotic component need stocking for quick

response to market needs

� Standard lead time after approval and agreement 4 weeks

− 1 week possible for a premium

2007/2008

PREFAG offers product AND service

�� Efficient cost control through KANBAN

� Low stocking cost for all parties

� Low stocking risk on exotic items – only components need to be

stocked - due to one-piece-flow

� Quick turnaround on new item prototypes to support�

approvals

� Volume defining parts in most designs machined for adaption flexibility

− Other components remain “mass production items“

− Thus lower design cost

2107/2008

PREFAG, the movement manufacturer

partnering up with repair stations

� Since PREFAG “only“ does the movement – with or without dial

� We do not hold approvals for use of these movements in

existing instruments/aircraft

� Here, the cooperation with repair stations or DO‘s comes into

the picturethe picture

− PREFAG technically supports repair stations or Design

Organizations (DO) with prototypes and design to obtain PMA‘s

or process specs for instruments to be equipped with PREFAG

movements2207/2008



� As no single repair station or DO can afford to obtain PMAs for all

instruments in case of service problems:

� The PMA shall be brought into a loose network of repair stations to

exchange products

� PREFAG produces the meter movement and only provides references.� PREFAG produces the meter movement and only provides references.

Thus the:

• Cost of certification is split between several repair stations

• Quantity to pay back the investment is multiplied

• Future for repair stations of analog instruments is secured

2307/2008



� Advantages of a partnership between the repair station or DO and PREFAG are:

� Reduction of maintenance cost for aircraft owners through costreduction of instrument repair

� Improved service and turnaround times for aircraft owners

� The larger the „network“ gets, the more exotic problems can be solved

� Repair stations secure their market by holding PMAs and / or � Repair stations secure their market by holding PMAs and / or „process specs“

� Reduced drive for owners to change to glass cockpit

� Future of repair station is secured

� Larger production quantities of meter movements for futureoriented costing

2407/2008

Who and where is PREFAG?

� Located in the south-west of Germany near Stuttgart/Frankfurt/Heidelberg� Located in the south-west of Germany near Stuttgart/Frankfurt/Heidelberg

� 240 employees generating € 22m. revenues

� 50% growth over 5 years

� Investing 10 % of revenues in growth and modernization

� PREFAG is solidly financed

� Pays its bills within 25 days average� Pays its bills within 25 days average

� Producing:

� Components for electrical analog instruments for aviation, tractionand industrial use

� Custom made components for pneumatic and hydraulic systems in automation and automotive applications

2507/2008

Who and where is PREFAG?

� Privately held company belonging to the privately held

� Magnet-Schultz-Group:

1800 employees generating € 250m. revenues

� Through our sister company Magnet-Schultz of America in

Westmond, IL, we could – where required – operate as a US company

and provide e. g. safety stock facilities there

2607/2008

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