Cole-Parmer MP-200 Serie Manual De Instrucciones página 3

Melting Point Apparatus
MP-200D, MP-200D-HR
Introduction
Thank you for purchasing this piece of Cole-Parmer
equipment. To get the best performance from the
equipment and for your own safety, please read
these instructions carefully before use. Before
discarding the packaging check that all parts are
present and correct.
This equipment is designed to operate under the
following conditions:
❖ For indoor use only
❖ Use in a well ventilated area
❖ Ambient temperature range +5°C to +40°C
❖ 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 manner described
in this manual and with accessories other than those
recommended by Antylia Scientific, the protection
provided may be impaired.
Electrical Installation
THIS EQUIPMENT MUST BE EARTHED
Before connection please ensure that the line
supply corresponds to that stated on the rating
label. Power consumption is 70W.
There is an IEC socket at the rear of the right hand
side of the instrument for connection to the mains
supply, (see figure 1). The unit is supplied with two
mains leads fitted with IEC plugs for connection to
the instrument. One has a U.K. 3 pin plug and the
other has a 2 pin "Shuko" plug for connection to
the mains supply. Choose the lead appropriate for
your electrical installation and discard the other.
Should neither lead be suitable you should obtain a
moulded lead locally. If this is not possible, take the
lead with the U.K. plug and replace the plug with
a suitable alternative. See the enclosed instruction
sheet for advice on how to carry out this procedure.
Should the mains lead require replacement a cable of
1mm2 of harmonised code H05W-F connected to an
IEC 320 plug should be used.
N.B. The UK mains lead is protected by a 10A fuse
mounted in the plug top. The mains lead should be
connected to the instrument BEFORE connection to
the main supply.
THIS OPERATION SHOULD ONLY BE UNDERTAKEN
BY A QUALIFIED ELECTRICIAN
General Description
The Cole-Parmer MP-200D and MP-200D-HR have
been designed for maximum safety and ease of
use. The temperature is selected, measured and
displayed digitally ensuring accuracy and avoiding
the need for a glass thermometer. Two samples can
be tested simultaneously. They are viewed via a
magnifying lens with clear observation aided by built
in illumination. Extendible feet allow the unit to be
operated at the optimum viewing angle. Full access
to the block allows easy cleaning and maintenance.
Before using the unit for the first time
Once the unit is unpacked, select the appropriate
choice of self adhesive instruction label from the
multi-language set provided. Peel off the backing
and stick the label onto the left side of the fascia.
Apply the label carefully using a flat object to
smooth away air bubbles.
Principle of Operation
The MP-200D and MP-200D-HR melting point
apparatus has been designed to give both quick and
accurate results as well as maximum convenience
in use. Melting point samples are placed in a glass
capillary tube which is placed in the aluminium block
inside the sample chamber. This block is heated and
the sample observed through the magnifying lens
until the melt occurs. The melting point temperature
may then be easily read from the large LED display.
In order to avoid the necessity to continually
watch the sample the MP-200D is equipped with a
"plateau" function. This allows a temperature to be
set a few degrees below the expected melting point.
The MP-200D will then heat to this temperature
very rapidly (20°C per minute) and hold it until the
operator is ready to begin measuring. It can safely be
left to do this unattended.
MP-200D only
Once measuring is started the MP-200D will
heat slowly (2°C per minute) from the plateau
temperature until the melt occurs. This slow rate of
heating allows very accurate melting points to be
obtained.
MP-200D-HR only
It is possible to adjust the ramp rate of the MP-
200D-HR, between 1ºC per minute and 10ºC per
minute. This allows either a fast result to be obtained
or a more accurate slow one
Before Use
Place the unit on a firm, level surface and extend the
feet at the rear of the instrument so that the unit is
at a convenient viewing angle. Connect to the mains
electricity supply and switch on by means of the
mains on/off switch. The actual block temperature
will now be shown on the LED display and the
illumination in the sample chamber will come on.
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