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4  Description of function

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Melting Point M-560 Operation Manual, Version G

Description of function

This section explains the basic principle of the Melting Point M-560 and provides a functional descrip-
tion of the assemblies.

4.1 

Melting Point

The Melting Point M-560 is an instrument for manual (visual) determination of melting point, melting 
range, and boiling point at ambient temper10 °C up to 400 °C. The melting point of three 
samples can be determined at the same time. The boiling point can be determined for one sample. 
Samples have to be observed through the lens.

The melting point capillary sits in a hollow of the metal block, which is heated electrically and 
controlled by a temperature sensor. The heating block is capable of being maintained accurately at a 
pre-defined temperature by the heating element, and of being heated at a defined rate.

4.2 

Boiling Point

The boiling point is determined by the “Siwoloboff” method.

The Melting Point M-560 can be used to determine the boiling point of a small amount of liquid. The 
heating block has one insert available for boiling point tubes (outside left). The moment of boiling is 
determined visually.

The process for boiling point determination is analogous to that for determining a melting point:
•  The start temperature is set 5 to 10 °C lower than the expected boiling point.
•  The sample is put into the heating block as soon as the start temperature is reached.
•   A delay time allows the equilibrium between oven temperature and sample temperature. During 

this delay time some air bubbles escape from the boiling point capillary.

•  Starting from the start temperature, the sample is heated at a temperature gradient of 1 °C/min.
•   As the temperature rises, bubbles of gas rise slowly and regularly from the immersed end of the 

boiling point capillary.

•   The boiling point of the liquid has been reached when the flow of steam bubbles reaches a 

frequency of 0.6 Hz [Hertz].

OM_093251_M-560_en_G.indd   13

12.07.2018   09:21:14

Содержание 051999

Страница 1: ...Melting Point M 560 Operation Manual 093251G en OM_093251_M 560_en_G indd 1 12 07 2018 09 21 10...

Страница 2: ...es to the manual as deemed necessary in the light of experience espe cially in respect to structure illustrations and technical detail This manual is copyright Information from it may not be reproduce...

Страница 3: ...riginal language version and serves as basis for all translations into other languages Other language versions can be downloaded at www buchi com Table of contents 1 About this manual 4 1 1 Reference...

Страница 4: ...6 3 3 Creating a method 29 6 3 4 Adjusting parameters during a determination 29 6 3 5 Printout 30 6 4 Calibration 31 6 4 1 Calibration principle 31 6 4 2 Calibration procedure 31 6 4 3 Printout 33 6 4...

Страница 5: ...1 1 Reference documents For more information regarding melting point refer to the corresponding literature The Laboratory Assistant 94187 Melting Point M 560 Operating Manual numbers 93251 93255 Melti...

Страница 6: ...en operating the instrument Personnel without this training or persons who are currently being trained require careful supervision This Operation Manual serves as a basis for training 2 2 Proper use T...

Страница 7: ...n the instrument is used care lessly or improperly The manufacturer has determined residual dangers emanating from the instrument if the instrument is operated by insufficiently trained personnel if t...

Страница 8: ...ment must be strictly followed Duty of maintenance and care The operator is responsible for ensuring that the instrument is operated only in a proper manner and that maintenance service and repairs ar...

Страница 9: ...e scope of delivery according to the order number NOTE For detailed information on the listed products see www buchi com or contact your local dealer 3 1 1 Standard accessories Table 3 1 Standard acce...

Страница 10: ...le holder 11055014 Cleaning tool 051978 A A B B A Boiling point tubes 10 units 019697 B Boiling point capillaries 10 units 051850 User management activation code 11066387 Compaction wire 036721 Operat...

Страница 11: ...9 051997 Verification set M 560 M 565 3 substances benzil p anisic acid phenolphthalein 11055019 Melting point capillaries 1000 units 001759 Mortar and pestle agate 041867 Compact keyboard German CH 0...

Страница 12: ...ting Point M 560 Manual melting point determination Manual boiling point determination Automatic melting point determination Automatic boiling point determination Homogeneous sample loading Positions...

Страница 13: ...mental conditions For indoor use only Temperature 5 40 C Altitude up to 2000 m a s l Humidity Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40...

Страница 14: ...he boiling point is determined by the Siwoloboff method The Melting Point M 560 can be used to determine the boiling point of a small amount of liquid The heating block has one insert available for bo...

Страница 15: ...lation returns to idle screen d 3 Select and Set buttons e Rotary knob for navigation through the menu and for select characters f Display Fig 4 1 Front view RS232 PS 2 USB a Mains plug b PS 2 connect...

Страница 16: ...ood due to the fact that it will be used to measure chemical substances For safety reasons and to ensure sufficient cooling in the electronic compart ment the unit must be placed at least 30 cm away f...

Страница 17: ...holder Install the glass window with glass holder on the front side of the heating block Press the glass holder down Install the cover Accessories Place the melting point capillaries in the hole of t...

Страница 18: ...plings cable or plug equipment as the mains lead has a molded plug to avoid risks due to inadvertently defective wiring Make sure that no electric sparks form in the instrument or its surroundings as...

Страница 19: ...ration substances only The calibration mode is described in section 6 4 Calibration 6 1 Basic operating principles WARNING The heating oven can reach temperatures of up to 400 C 6 1 1 Display during i...

Страница 20: ...rresponding symbol is displayed during all processes Melting Point Boiling Point Calibration Tools 6 1 2 Display during a process or in menus a b c a Shows where you are and gives advice and instructi...

Страница 21: ...the rotary knob to select a character and press Enter Press Save after entering all characters 6 1 4 Using the external keyboard NOTE The instrument can be operated using an external keyboard For the...

Страница 22: ...by letting the capillaries fall through a tube is not advised because cross contamination may occur Preparation of the samples The samples being investigated must be fully dry homogenous and in powde...

Страница 23: ...t of the screen NOTE If the current parameters do not meet your requirements press Edit and set start temperature stop temperature and temperature gradient a b c d a Start temperature b Stop temperatu...

Страница 24: ...on entering text see 6 1 3 This request can be switched off by changing the setting Sample ID request see 6 5 Insert samples and press START to begin the deter mination To register additional temperat...

Страница 25: ...START to measure again with the identical measuring parameters The result is printed out automatically if a printer is connected NOTE The last result is stored in the device until a new measurement is...

Страница 26: ...ethod name To finish press Save Adjust a parameter and press Next Then Save 6 2 4 Using and handling methods Turn the rotary knob to select a method Press START to start the determination Use Edit to...

Страница 27: ...current param eter set Adjust the parameters by pressing Edit Adjusting the parameters does not affect the saved method If the temperature gradient is changed during a measure ment the result shows CH...

Страница 28: ...d using a syringe for simple filling Insert a boiling point capillary into the boiling point tube with its open thick end down Put the sample immediately into the heating block 6 3 2 Determination wit...

Страница 29: ...the start temperature Press START to begin the determination and follow the instructions on the screen The instrument requests a sample ID during preheating for details on entering text see 6 1 3 This...

Страница 30: ...T to measure again with the identical measuring parameters 6 3 3 Creating a method NOTE The process of creating a boiling point method is identical that used to create a melting point method see 6 2 3...

Страница 31: ...the instrument is switched off 6 3 5 Printout a b c d e Printout a Instrument type b Determination parameters c Manual pressed results d General information e Signature of person making the de termina...

Страница 32: ...Nitrotoluene approx 52 C Diphenyl acetic acid approx 148 C Caffeine approx 237 C Potassium nitrate approx 335 C From each substance a minimum of 6 have to fulfill a standard deviation of less than 0 2...

Страница 33: ...be pressed once Regis tered temperature stamps are displayed green After each run the current result is indicated Press START to perform next measurement After 6 results are obtained within a standard...

Страница 34: ...s potassium nitrate g General information h Signature of person performing the calibration NOTE The Average is calculated on the basis of the temperature values with two positions after the decimal po...

Страница 35: ...en all measuring results were within the required tolerances click on Verified The following screen appears Enter the following password VER The current date is now indicated under Last verification 6...

Страница 36: ...ow is displayed disabled The sample ID window is not automatically displayed In combination with the Melting Point Monitor software it is advisable to turn this feature off Barometric pressure request...

Страница 37: ...0 100 User management Activation key will enable the user management setting After an administrator password can be defined The instrument can only be started in the administrator mode if the correct...

Страница 38: ...ion 37 Melting Point M 560 Operation Manual Version G 6 5 2 SysInfo protocol a b c a Setting parameters b Calibration correction values c Date of factory tests OM_093251_M 560_en_G indd 37 12 07 2018...

Страница 39: ...nd boiling point 2 Access to the following parameters start temperature heating rate and end temperature 3 Selection of methods but no editing and deleting 4 No access to changing of date and time cal...

Страница 40: ...s used should be carried out only with the prior written permission of the manufacturer 7 1 Housing Check the housing of your melting point instrument for defects controls plugs The housing is coated...

Страница 41: ...978 If a melting point capillary is broken and is stuck in the heating block use the cleaning tool Order number 051978 Remove the cover and glass holder with glass window If glass parts of a melting p...

Страница 42: ...n No or unreadable printout Not activated in the settings Activate automatic printout in the settings Bad cable connection Check cable connection Printer switched OFF Switch ON printer No paper Replac...

Страница 43: ...missing Contact customer service Error 11 Internal clock power loss Contact customer service Error 13 5 V input voltage missing Contact customer service NOTE If several errors are pending the one wit...

Страница 44: ...rous substances from the instrument and clean it thoroughly Store and transport the instrument in its original packaging WARNING Electrical hazard Always remove the power cord from the socket first to...

Страница 45: ...ure optimum system performance and reliability use only genuine BUCHI consumables and spare parts for maintenance and repair Prior written permission of the manufacturer should be obtained before any...

Страница 46: ...rference in which case users will be required to correct the interference at their own expense Fran ais Cet appareil a t test et s est av r conforme aux limites pr vues pour les appareils num riques d...

Страница 47: ...ivate Ltd IN Mumbai 400 055 T 91 22 667 75400 F 91 22 667 18986 india buchi com www buchi com in en Indonesia PT BUCHI Indonesia ID Tangerang 15321 T 62 21 537 62 16 F 62 21 537 62 17 indonesia buchi...

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