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Melting Point Apparatus - Instrumart SMP10 melting point apparatus has been ... Melting point samples are placed in a glass ... electrical safety test, or

Jun 27, 2018

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  • Instructions for useManuel dutilisationIstruzioni per lusoInstrucciones de funcionamientoBedienungsanweisung

    Version 1.1

    SET

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    MADE IN

    THE UK

    Melting PointApparatus SMP10

    Scientific

  • English

    This equipment is designed to operate under thefollowing conditions:-

    For indoor use only Use in a well ventilated area Ambient temperature range

    +5C to +40C Altitude to 2000m Relative humidity not exceeding 80% Mains supply fluctuation not exceeding 10% Overvoltage category II IEC60364-4-443 Pollution degree 2 IEC664

    If the equipment is not used in the mannerdescribed in this manual the protection providedby the equipment may be impaired.

    Thank you for purchasing this BarloworldScientific product. To get the bestperformance from the equipment, and foryour own safety, please read theseinstructions carefully before use.

    SET

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    MADE IN THE UK

    SET

    START

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    MADE IN

    THE UK

    Figure 1

    IEC connector

    Temperature display

    Control panel

    Eye viewer

    Sample tubeholder

    Extendible feet

    Instruction facia

    Mainson/off

  • 1

    Electrical Installation

    THIS EQUIPMENT MUST BE EARTHED

    Before connection please ensure that theline supply corresponds to that stated on therating label. Power consumption is 70W.

    There is an IEC socket at the rear of the righthand side of the instrument for connection to themains supply, (see figure 1). The unit is suppliedwith two mains leads fitted with IEC plugs forconnection to the instrument. One has a U.K. 3pin plug and the other has a 2 pin Shuko plugfor connection to the mains supply. Choose thelead appropriate for your electrical installationand discard the other.

    Should neither lead be suitable you should obtaina moulded lead locally. If this is not possible, takethe lead with the U.K. plug and replace the plugwith a suitable alternative. See the enclosedinstruction sheet for advice on how to carry outthis procedure.

    Should the mains lead require replacement acable of 1mm2 of harmonised code H05W-Fconnected to an IEC 320 plug should be used.N.B. The UK mains lead is protected by a 10Afuse mounted in the plug top.The mains lead should be connected to theinstrument BEFORE connection to the mainssupply.

    IF IN DOUBT CONSULT A QUALIFIEDELECTRICIAN

    General Description

    The Stuart SMP10 has been designed formaximum safety and ease of use. Thetemperature is selected, measured and displayeddigitally ensuring accuracy and avoiding the needfor a glass thermometer. Two samples can betested simultaneously. They are viewed via amagnifying lens with clear observation aided bybuilt in illumination. Extendible feet allow theunit to be operated at the optimum viewingangle. Full access to the block allows easycleaning and maintenance.

    Before Using your SMP10 for the first timeOnce the unit is unpacked, select the appropriatechoice of self adhesive instruction label from themulti-language set provided. Peel off the backingand stick the label onto the left side of theSMP10 facia. Apply the label carefully using a flatobject to smooth away air bubbles.

    Principle of Operation

    The SMP10 melting point apparatus has beendesigned to give both quick and accurate resultsas well as maximum convenience in use.

    Melting point samples are placed in a glasscapillary tube which is placed in the aluminiumblock inside the sample chamber. This block isheated and the sample observed through themagnifying lens until the melt occurs. Themelting point temperature may then be easilyread from the large LED display.

    In order to avoid the necessity to continuallywatch the sample the SMP10 is equipped with aplateau function. This allows a temperature tobe set a few degrees below the expected meltingpoint. The SMP10 will then heat to thistemperature very rapidly (20C per minute) andhold it until the operator is ready to beginmeasuring. It can safely be left to do thisunattended.

  • 2

    Once measuring is started the SMP10 will heatslowly (2C per minute) from the plateautemperature until the melt occurs. This slow rateof heating allows very accurate melting points tobe obtained.

    Before UsePlace the unit on a firm, level surface and extendthe feet at the rear of the instrument so that theunit is at a convenient viewing angle.

    Connect to the mains electricity supply andswitch on by means of the mains on/off switch.The actual block temperature will now be shownon the three digit LED display and theillumination in the sample chamber will come on.

    Measuring a Melting PointN.B. If the unit has been used recently the blockmay be too hot for your sample. If this is the casepress the stop button and allow the unit to coolbefore proceeding.

    1. Prepare sample by placing a small amount inthe end of a glass capillary tube.

    2. Decide on a suitable plateau temperature.This should be approximately 10C belowthe expected melting point of the sample.

    3. Check that all 3 function lights areextinguished. If not, press the stop button.

    4. Press and hold the set button (the plateaulight will flash). The display will now showthe current plateau temperature. When firstswitched on this will be 50C but note thatif the unit has recently been used the valuemay have been re-set by the previous user.

    5. The desired plateau temperature may nowbe set using the arrow keys to scroll thedisplay up or down as required.

    6. Release the set button. The new plateautemperature is now set and all functionlights will go out (The plateau setting can bechecked at any time during operation bypressing and holding the set button). Thisaction will not interfere with the operationof the unit).

    7. Insert the tube into the side of the heatingblock via the holes provided. Forconvenience this can be done from eitherside of the block. Look down the magnifierand position the tube so that the samplecan be observed clearly.Caution: The heating block may be HOT.

    8. Press the start key. The unit will quickly heatup to the plateau temperature (the heatinglight will be illuminated - see figure 1)

    9. Once the plateau temperature has beenreached the plateau light will be illuminatedas well as the heating light - see figure 1. N.B. At low plateau temperatures there maybe some overshoot. Wait until the plateaulight comes on before proceeding in order toensure that the temperature has stabilised.

    10. Press the start button again. The block willbegin to heat at the pre-set ramp rate of2C per minute (The plateau light will goout and the ramping and heating lights willboth be illuminated - see figure 1.)

    11. Observe the sample until the melt occursand record the temperature from the digitaldisplay.

    12. After the melt has occurred press the stopbutton. All function lights will go out andthe unit will cool to ambient temperature.

    13. Pressing the start button again will cause theunit to return to the plateau temperatureinstead of ambient. The heating light willcome on even if the temperature is abovethe plateau and the unit is, in fact, cooling.

  • 3

    Cleaning & Servicing

    WARNING: Ensure the unit isdisconnected from the mains electricitysupply and allowed to cool beforeattempting any cleaning or servicing.

    CleaningPeriodically clean the instrument using a dampcloth and mild detergent solution. Do not useharsh or abrasive cleaning agents.

    Broken melting point tubes may be removedfrom the block simply by pushing them throughwith a piece of wire or similar tool.

    For access to the block for more thoroughcleaning the sample chamber cover must beremoved.

    1. Remove the 3 retaining screws and lift off thecover.

    2. Loosen the screw retaining the metal platebut do not remove completely.

    3. Push the plate to one side.

    4. The glass window in the top of the block maynow be removed.

    ServicingAny repairs or replacement of parts MUST onlybe undertaken by suitably qualified personnel.

    There are two replaceable fuses on the rear ofthe IEC mains connector. The cause of any fusefailure should be investigated and corrected.

    Proceed as follows:1) Ensure the SMP10 is disconnected from the

    mains supply.

    2) Unscrew the four screws on the base of theunit and remove the base plate. Do notdisconnect or pull on the base earth bondingwire.

    3) Two fuses are mounted on the rear of the IECconnector (both Live and Neutral mainssupply leads are fused). These fuses can beremoved and replaced by hand. ALWAYSreplace the fuse by ones of the correct values shown below:

    For 230V, 50Hz - T1A For 120V, 60Hz - T1.6A

    4) Refit the base and four securing screws.

    5) It is advisable to perform a PAT (PortableAppliance Test) electrical safety test, orequivalent, before the SMP10 is put back intooperation.

    For a comprehensive list of parts and a ServiceManual required by service engineers conductinginternal repairs, please contact the TechnicalService Department of Barloworld Scientific Ltd.quoting both the model and serial number.

    Only spare parts supplied or specified byBarloworld Scientific Ltd. or its agents should beused. Fitting of non-approved parts may affectthe performance and safety features designedinto the instrument.

    If in any doubt, please contact the TechnicalService Department of Barloworld Scientific Ltd.or the point of sale.

    Barloworld Scientific Ltd. Stone, Staffordshire ST15 0SA United KingdomTel: +44 (0) 1785 812121 Fax: +44 (0) 1785 813748 e-mail [email protected]

  • 4

    Warranty

    Barloworld Scientific Ltd. warrants this instrumentto be free from defects in material andworkmanship, when used und