EthosD Manual

ETHOS D User Manual - Rev. 0/2001

ETHOS D

ETHOS D

INTRODUCTION

The Ethos D is the most technologically advancedinstrumentation for total microwave samplepreparation.In 1994, the ETHOS project was started to developa new generation of microwave chemistry systemsbased on the experience of several thousands usersworldwide, who process some of the most difficultsamples (ores, coal, fly ash, ceramics, and plastics).Milestone R&D engineers were given the goal todevelop the safest, highest performing and mostflexible microwave platform for laboratoryapplications.No limits were set, only goals.This is ethical.This is ETHOS.

ETHOS D CONFIGURATION

ETHOS D WITH TERMINAL 20

P/N Description Powersupply

44022 ETHOS D withTerminal 20 for storageof up to 30 10-stepprograms

230V/50Hz

44024 ETHOS D withTerminal 20 for storageof up to 30 10-stepprograms

230V/60Hz

ETHOS D Control Options

P/N Description33684P Infra-Red External Temperature

Control kit for continuoustemperature control of all vessels

86303P APC-55E Automatic Pressure Controlup to 55 bar (800 psi)

86008 Automatic magnetic stirrer cpl

TECHNICAL SPECIFICATIONS

• Microwave labstation for quality control fordigestion, drying and evaporation/concentrationprocedures.

• Patented self-sealing explosion resistant door.• Dual independent magnetrons with rotating

microwave diffuser for homogeneousmicrowave distribution.

• Installed microwave power 1.600Watt.• Delivered microwave power 1.000Watt in

10Watt increments.• Variable microwave pulse width from 0,1” to

5”.• Microwave cavity all made of 18/8 stainless

steel housing with multilayer Teflon plasmacoating applied at 350°C.

• All hardware protected against acid/organicsolvents with polymer coating both inside andoutside surfaces.

• Dimensions 35cm x 35cm x 35cm (ca. 45Lvolume).

• Built-in exhaust system with automatic constantflow control, acid and organic solvent resistant;with flow rate 5m3/minute.

• Terminal 20, 2 lines 20 characters (LDC displayblack/white, flat keyboard, alphanumericdisplay, 12 special function keys

• Storage of up to 30 10-step programs; includesmicrowave power, time, pressure, internal andexternal temperature


ETHOS D

• RS-232 for connecting PC (for data basereporting and programming of the unit),

• System control options includes the followingdevices.

• ATC-400CE Automatic Temperature Controlfor direct monitoring of vessel content, reactiontemperature up to 300°C

• APC-55 Automatic Pressure Control for directsensing monitor of vessel content, reactionpressure control up to 55bar.

• IRTC-500 Infra Red Temperature Control,advanced non-contact monitor to protect rotorsand vessels with optional magnetron regulationor system shutdown.

• Dimensions of the microwave unit: 55cm largex 55cm long and 70cm high.

• Power supply 230V, 50 or 60Hz, 10,6A,2.400Watt.

• Weight approximately 90 kg.


ETHOS D

A LOOK AT THE HIDDEN SIDE OF THEETHOS UNIT

The most important safety features are the ones youdon’t see from the outside.For this reasons Milestone lets you see under thecabinet cover of the ETHOS.

SAFETY THROUGH MECHANICAL DESIGN

The ETHOS is not a kitchen type nor acommercially modified kitchen microwave unit; itis a rugged, heavy duty professional systemdesigned to guarantee years and years of troublefree and safe operation.The hardware The microwave cavity is quite large,to accommodate different types of accessories.Dimensions are 35cm x 35cm x 35cm, for a volumeof approximately 43L.The door is, as standard feature, made of stainlesssteel; however, on request, it is possible to have adoor with a high impact shock resistant 27cm x27cm glass window for easy viewing of theilluminated cavity (picture).is manufactured with 18/8 stainless steel, 1,5mmgauge (picture).

SAFETY THROUGH PATENTED DOORDESIGN

The door design is the most critical issue whendeveloping new microwave hardware.Mechanical strength and perfect sealing of thecavity to avoid microwave leaks are prerequisites.Milestone’s engineers, on the basis of the “movabledoor” principle used in high pressure autoclaves,designed a door with an innovative opening/selfresealing mechanism.The door frame is mounted on four spring-loadedhigh strength steel bars (picture).

In the event of a sudden overpressure inside thecavity, the entire door opens horizontally (“movesout”) presenting a large surface area for immediateand safe release of the overpressure.Microwave power is instantaneously cut off.Immediately afterward, the door is “pulled back” bythe springs, resealing the cavity.The microwave cavity door opens downwards to aflat horizontal position, forming a stable workplatform for handling microwave accessories beforeand after digestion procedures.


ETHOS D

SAFETY THROUGH ELECTRICAL DESIGN

The ETHOS microwave platform is equipped witha total of 7 microswitches to assure the highestsafety conditions.Four (two on each side of the door) fast releasemicroswitches instantaneously interrupt themicrowave emission whenever the door is opened(previous picture).One safety switch on the cabinet cuts offmicrowave emission whenever the cabinet isdetached (picture).

Two thermal switches on magnetron’s body cut offpower in case of overheating (picture).

PERFORMANCE THROUGH MICROWAVEHARDWARE DESIGN

The “heart” of the ETHOS platform is theinnovative and patented microwavefeed/distribution system to the working cavity.Two 800Watt industrial magnetron, each with itsown high voltage power supply, assure a powerful1.600Watt of microwave installed power (picture).

Two high flow cooling fans guarantee peakperformance of the magnetrons.The microwaves are first fed into a “pre-mixingchamber.From here an ingenious “pyramid shaped” rotatingmetal diffuser evenly distributes the microwaves inthe cavity (picture).


ETHOS D

Surfaces are Teflon coated with the diffuserprotected by an inert high density polypropyleneplate.This unique microwave design and the advancedmicroprocessor control assures optimal microwavedistribution in the cavity, thus preventing “hotspots”.The installed power of 1.600Watt has been limitedby design to operate at approximately 2/3 of themaximum power (1.000Watt) to assure longermagnetrons lifetime.The 1.000Watt of delivered power are delivered in10Watt increments to fit all types of applications.

PERFORMANCE THROUGH VERSATILITY

To fulfill the goals of making the ETHOS the mostversatile microwave platform, Milestone’sengineers built 12 microwave leakage protected(inlet/outlet) connectors.Temperature and pressure sensor, connectors forvacuum and inert gas supply, can be all easilyinstalled without any hardware modifications.

PERFORMANCE THROUGH MODULARITY

The ETHOS microwave platform has beendesigned with the microwave emission into thecavity from the back wall instead of theconventional position on top of the cavity.This unique construction allows both the top andthe bottom of the cavity to be free.A free top allows the installation of batch reactors,while the free bottom makes possible theinstallation of a continuous flow reactor or of anadvanced magnetic stirring device.The ETHOS microwave platform can be upgradedwith suitable modules/accessories to carry out: aciddigestion, vacuum drying,evaporation/concentration, protein/peptidehydrolysis, solvent extraction, batch organicsynthesis and continuous flow organic synthesis.

DURABILITY THROUGH CORROSIONRESISTANCE

One of the key issues was assuring a long lifetimeof our unit when performing digestions withaggressive acids (HNO3, H2SO4, HCl, H3PO4, HF).The all stainless steel hardware undergoes apretreatment (sandblasting plus heat cycles) toassure best “bonding” conditions between theTeflon coating and metal surfaces.The microwave cavity, the top cavity, the door andeven the external surface of the air inlet (grid) areplasma coated with 5 layers of Teflon applied at350°C (picture).

DURABILITY THROUGH CHASSIS DESIGN

The cabinet chassis is manufactured with magnetic18/8 stainless steel (1,0mm gauge) to act as a


ETHOS D

Faraday cage to eliminate potential interference toother instruments (picture).

It is protected against acid/organic solvent vaporsthrough high temperature polymer coating on both

the outside and inside surfaces.

DURABILITY THROUGH ADVANCEDEXHAUST/COOLING SYSTEM

This is another important factor for assuring longlife of digestion vessels and safe workingconditions.The ETHOS platform is supplied with a heavyduty, 5m3/minute exhaust fan placed above thecavity and installed separately from the electronicsto eliminate the danger of acid corrosion of theelectronics (previous picture).The air flow from the grids at the bottom of thecavity cools the external surfaces of the rotor andcarries away any acid vapors released in the cavity.An acid resistant flexible hose connects the exhaustfan to a fume hood assuring a safe workingenvironment.

DURABILITY THROUGH USER-FRIENDLYSERVICE

As perfection is not of this world, easy access incase of servicing is a must.Please refer to the separate ETHOS Service Manualfor further information.More details about this subject are available in theETHOS Service Manual.


ETHOS D

ETHOS D COMPATIBILITYWITH DIGESTION, DRYINGAND CONCENTRATIONROTORS

The ETHOS D can accommodate the followingacid digestion vessels and rotors:

P/N DescriptionSK6T HPR-1000/6M High Pressure

Monoblock for temperatureSK6TP HPR-1000/6M High Pressure

Monoblock for temperature andpressure

SK-10T HPR-1000/10S High PressureSegmented rotor for temperaturecontrol

SK-10TP HPR-1000/10S High PressureSegmented rotor for temperature andpressure

SK-12T MPR-600/12S Medium PressureSegment rotor for temperature

SK-12TP MPR-600/12S Medium PressureSegment rotor for temperature andpressure

SK-6LV MPR-600/6S Low Pressure Rotorcpl for temperature control

All the SK starter kits include the complete rotorwith work station and tension wrench toopen/closed vessels.

The ETHOS D can accommodate the followingdrying and evaporation/concentration rotors andpre-digestion reflux rotors:

P/N Description40103 MCR-1 Drying rotor in

polypropylene 6,5L34649 MCR-6 Concentration rotor 6

position emptyMMR1/8 MMR-8 PTFE EVAPORATION

SET-UPMMR2/8 MMR-8 WEFLON

EVAPORATION SET-UPMMR3/8 MMR-8 GLASS BOTTLES SET-

UPMMR4/8 MMR-8 REFLUX SET-UPMMR1/12 MMR-12 PTFE EVAPORATION

SET-UPMMR2/12 MMR-12 WEFLON

EVAPORATION SET-UPMMR3/12 MMR-12 GLASS BOTTLES SET-

UP

MMR4/12 MMR-12 REFLUX SET-UP

The MCR/MMR series rotors require a vacuumsource.Below are the options available.

P/N DescriptionVAC1000 VAC-2000 Vacuum Solvent

Recovery ModuleVAC2000 VAC-1000 Scrubber for

neutralization of acids


ETHOS D

INSTALLATION OF THE ETHOSD WITH TERMINAL 20

WARNINGNever install the ETHOS D under a fume hood!

In fact, if you should install the microwave systemunder a fume hood, the acid vapors mightcontaminate the air used for ventilating theelectronic components, exposing them to a possiblecorrosion.

UNPACKING AND CHECKING LIST

When unpacking, verify that all parts correspond tothe packing list included in the shipment.Utmost care must be taken during unpacking of theETHOS D to avoid any scratch or damage to thespecial acid and organic solvent resistant externalcoating.

Carefully cut the protective belts, as shown in thenext picture.

Remove the carton box located in the upper part of

the box (picture) and keep it apart.

It contains accessories which will be taken duringthe installation of the ETHOS D.The carton box should include the following:• n. 1 Milestone ETHOS D microwave

labstation;• n. 1 Power cord for ETHOS D;• n. 1 Plastic hose 2m long;• n. 1 Terminal 20• n. 1 Interface cable 25-pin for connecting the

ETHOS D to the l terminal model 20


ETHOS D

Lift-up the main carton box to facilitate the removalof the ETHOS D (picture).The ETHOS D comes protected by a plastic bag toavoid it getting wet during transportation.

Provide a bench of at least 1m length and 80cmwide and locate the ETHOS D on the bench.A proper location of the ETHOS D is next to afume hood, since the microwave unit should beconnected to the fume hood by using the hosesupplied (details will follow).

WARNINGThe weight of the ETHOS D is approximately 90kg.At least 3 persons should remove the system fromits box and locate it on the bench.

Open now the boxes containing the accessories ofthe ETHOS D.

Notice the ETHOS D power cord (picture).


ETHOS D

Notice the plastic hose 2ml long (picture).

Notice also the Terminal 20 with its 25 pininterface cable (picture).


ETHOS D

ETHOS D OVERVIEW

Notice some of the most important details of theETHOS D.Main switch (picture).

WARNINGDuring the ETHOS D installation the main switchshould be in the “OFF” position.

Exhaust module main switches (picture).

The ETHOS D comes with the exhaust module asstandard feature.

WARNINGDuring the ETHOS D installation both the switches

should be in the “OFF” position.

This is the air inlet for the air exhaust system,located on the side of the unit. Don’t worry aboutmicrowave leakages! A metal grid, which can beseen through the plastic connector, reflectsmicrowaves back to the cavity, not allowing anyleakage through the opening. Do not block orobstruct the opening since air circulation throughthe microwave cavity is an important safety aspectof microwave closed vessel acid digestion.

Overview of the back side of the ETHOS D

(picture). Notice in the upper part (left) the openconnection for the plastic for a second optionalblower.

Detail of the interfaces of the ETHOS D (picture);at left a standard RS-232 9 pin interface port, to beused for connecting the microwave to external PC;


ETHOS D

at right the special 25 pin interface port to be usedfor connecting the ETHOS D to the Terminal 20.

Detail of the left back panel of the ETHOS D(picture), showing the connection to the power cord(at right, down), the power connection to externaldevices (right, up), and the fuse holder with twofuses.

More details about this subject are available in theETHOS Service Manual.


ETHOS D

TERMINAL 20 INTERFACE PORTS

The picture below shows the back side of theTerminal 20.It is possible to see the Special 25 pin interface portfor connecting the terminal to the ETHOS D mainunit.

ETHOS D SETUP

Connect the 25 pin interface cable supplied to theback side port of the ETHOS D and use ascrewdriver to fix it well (picture) To the left is theRS-232 9 pin for connecting the ETHOS D to anexternal PC.

Connect the other end of the 25 pin cable to theTerminal 20 and again use a screwdriver to fix itwell (picture).


ETHOS D

WARNINGBoth the 25 pin connections must be very tight;damages may occur when the ETHOS andTerminal 20 are not properly connected.

Plug-in the supplied power cord at the back side ofthe ETHOS (picture).

Introduce now the “L” shaped adapter to theexhaust outlet located at the left of the ETHOSback panel.Connect the exhaust hose to the “L” shaped adapter(picture).

The free end of the exhaust hose should be placedunder a fume hood or to an existing exhaust(picture).

Your new ETHOS D is now ready to work!

EthosD Manual

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