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Metrohm 892 Professional Rancimat, Manual

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Metrohm 892 Professional Rancimat Manual Download Page 37

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4 Operation

892 Professional Rancimat

￭￭￭￭￭￭￭￭

29

Figure 16

Assembling the reaction vessel for determining the tempera-
ture correction

1

FEP tubing 250 mm (6.1805.080)

For supplying air into the reaction vessel.

2

Pt100 temperature sensor (6.1111.010)

3

Thread adapter M8/M6 (6.1808.090)

4

O-ring (6.1454.040)

5

Temperature sensor opening

For inserting the temperature sensor.

6

Connector

For connecting the thread adapter M8/M6.

7

Reaction vessel cover (6.2753.107)

8

Air tube (6.2418.100)

9

Spacer (6.2042.040)

10

Reaction vessel (6.1429.040)

Summary of Contents for 892 Professional Rancimat

Page 1: ...892 Professional Rancimat Manual 8 892 8001EN 2020 03 11...

Page 2: ......

Page 3: ...Metrohm AG CH 9100 Herisau Switzerland Phone 41 71 353 85 85 Fax 41 71 353 89 01 info metrohm com www metrohm com 892 Professional Rancimat Manual 8 892 8001EN 2020 03 11...

Page 4: ...echcom metrohm com This documentation is protected by copyright All rights reserved This documentation has been prepared with great care However errors can never be entirely ruled out Please send comm...

Page 5: ...3 1 3 Location 10 3 2 Mounting accessories 11 3 2 1 Mounting the internal air supply 11 3 2 2 Mounting the external air supply 13 3 2 3 Assembling the reaction and measuring vessels 14 3 2 4 Insertin...

Page 6: ...1 Care 41 5 1 2 Maintenance by Metrohm Service 41 5 1 3 Cleaning the instrument 42 5 2 Replacing the dust filter 43 5 3 Regenerating or replacing the molecular sieve 44 6 Troubleshooting 45 6 1 Proble...

Page 7: ...unting the air tube correct incorrect 17 Figure 9 Mounting the foam barrier 17 Figure 10 Mounting the oil separator 20 Figure 11 Instrument display with instrument name 23 Figure 12 Instrument display...

Page 8: ......

Page 9: ...ully automatically Besides the induction time the so called stability time i e the time until a defined conductivity change has been achieved can also be determined In the case of conductivity changes...

Page 10: ...umber refers to the figure number the sec ond to the instrument part in the figure Instruction step Carry out these steps in the sequence shown Method Dialog text parameter in the software File New Me...

Page 11: ...strument the following instructions must be observed care fully Hot reaction vessels WARNING The reaction vessels can become very hot Avoid any contact with the hot reaction vessels Place these in the...

Page 12: ...s inside the housing which can be serviced or replaced by the user Supply voltage WARNING An incorrect supply voltage can damage the instrument Only operate this instrument with a supply voltage speci...

Page 13: ...ean up spilled liquids and solids immediately Follow the safety instructions of the chemical manufacturer 1 3 4 Recycling and disposal This product is covered by European Directive 2012 19 EU WEEE Was...

Page 14: ...the reaction vessel to the measuring vessel 2 Measuring vessel cover 6 0913 130 Contains an integrated conductivity measur ing cell 3 Measuring vessel 6 1428 107 4 Instrument display Displays the stat...

Page 15: ...acing fuses see chapter 3 3 2 page 22 5 Power socket For important information on the power connection see Chapter 3 3 6 Collection tube holder For fastening the optional exhaust air collec tion tube...

Page 16: ...supplying the air from the drying flask to the reaction vessels 2 3 Instrument display 892_1 1 2 3 4 9 8 7 6 10 5 Figure 3 Instrument display 1 Measuring vessel cover red This measuring position is n...

Page 17: ...easured on block B gray background heater switched off red background temperature not stable green background temperature stable 8 Temperature display block A Shows the temperature measured on block A...

Page 18: ...lead to overheating and subsequently damage the instrument Set the instrument up freestanding to allow the air to circulate around the instrument Do not cover the instrument The instrument has been d...

Page 19: ...ask connector 6 FEP tubing 250 mm 6 1805 080 For supplying the air from the drying flask to the reaction vessel 7 To flask connector 8 FEP tubing 250 mm 6 1805 080 For supplying the air from the inter...

Page 20: ...ilter tube on the bottom side of the drying flask cap into the opening marked with a dot on the upper side III Screw the drying flask cap with mounted filter tube onto the drying flask and insert it i...

Page 21: ...end of the FEP tubing 130 mm to the Air out connec tor Screw the other end of the FEP tubing to the Air N2 in connec tor 3 2 2 Mounting the external air supply If the laboratory air is heavily contami...

Page 22: ...ew the tubing adapter M6 olive 6 1808 020 onto the other end of the FEP tubing 2 Connecting the gas supply Mount the compressed air bottle on the M6 olive tubing adapter 6 1808 020 Adjust the air flow...

Page 23: ...Tubing connector For connecting the silicone tubing 7 Thread adapter M8 M6 connector 8 Reaction vessel cover 6 2753 107 9 Foam barrier 6 1451 010 Optional foam barrier 10 Reaction vessel 6 1429 040 1...

Page 24: ...the air tube Feed the air tube 6 2418 xx0 into the connector of the reaction vessel cover 6 2753 107 from above Gently screw the M8 M6 thread adapter into the connector while pressing the air tube ag...

Page 25: ...e assembled the reaction and measuring vessels insert them in the 892 Professional Rancimat and establish the tubing connections see chapter 2 1 page 6 as follows 1 Inserting the measuring vessel Fill...

Page 26: ...he tubing connector of the reaction vessel cover Screw the FEP tubing 250 mm which is connected to the M8 olive tubing adapter of the 892 Professional Rancimat to the M8 M6 thread adapter of the react...

Page 27: ...e enclosed stoppers 3 Connecting the exhaust air collection tube Connect a suitable tubing to the connector of the exhaust air col lection tube and connect it to an active suction device e g water jet...

Page 28: ...place Clamp an oil separator in place on the side of each reaction vessel sealing cover on the bottom 2 Attaching the silicone tubing to the oil separator Attach one end of the silicone tubing to the...

Page 29: ...ent when the power cord is connected Protect live parts e g power supply unit power cord connection sockets from moisture Only operate the instrument with a residual current circuit breaker If you sus...

Page 30: ...Replacing fuses The fuse holder of the 892 Professional Rancimat contains two fuses Two slow acting 4 A fuses WARNING Ensure that the instrument is never put into operation with fuses of another type...

Page 31: ...d off using the power switch 2 3 The instrument display is switched on when the instrument is switched on Figure 11 Instrument display with instrument name The instrument 892 Professional Rancimat has...

Page 32: ...am has to be installed before you can connect the instrument to the computer The StabNet computer program allows you to control up to 4 instru ments Connect and set up the 892 Professional Rancimat as...

Page 33: ...92 Professional Rancimat 25 NOTICE You will find detailed information regarding the StabNet com puter program in the Tutorial The instrument name entered in the configuration must appear on the instru...

Page 34: ...hod the sample is exposed to an air flow at a con stant temperature between 100 140 C Highly volatile secondary oxida tion products for the most part formic acid and acetic acid are transfer red into...

Page 35: ...e conductivity sensor 6 0913 130 is normally at 1 1 0 1 cm 1 This accuracy is sufficient for an induction time determi nation since only the shape of the curve is evaluated For the determina tion of t...

Page 36: ...S cm 6 2324 010 NOTICE You will find detailed information regarding the StabNet computer program in the Tutorial 4 2 2 Determining the temperature correction Temperature correction indicates the devia...

Page 37: ...or supplying air into the reaction vessel 2 Pt100 temperature sensor 6 1111 010 3 Thread adapter M8 M6 6 1808 090 4 O ring 6 1454 040 5 Temperature sensor opening For inserting the temperature sensor...

Page 38: ...the spacers 2 Preparing the reaction vessel Fill the reaction vessel with 5 g silicone oil 6 2326 000 Place the reaction vessel cover with the temperature sensor on the reaction vessel Push the tempe...

Page 39: ...clear as follows 1 Weighing in the sample Place the reaction vessel on a scale using a 6 2628 000 holder Weigh the sample material directly in the reaction vessel Normally 3 g of sample material are u...

Page 40: ...nd fats made from products containing oil and fat must be extracted with petroleum ether low boiling while being protected from light as fol lows 1 Crushing the samples Finely and homogeneously grind...

Page 41: ...ation You can use up to 40 g of sample material per batch 3 Distillation and filtration Distill the petroleum ether from the clear perhaps slightly yellow extract NOTICE It is safest and easiest if yo...

Page 42: ...983 Preparing emulsion fats You can use emulsion fats like pure substances and prepare them as fol lows 1 Weighing in the sample Weigh in the sample NOTICE As the water evaporates right at the beginni...

Page 43: ...mination could catalytically accelerate the oxidative decomposition and lead to completely incorrect results Therefore always observe the instructions for use of measuring and reaction vessels in this...

Page 44: ...of the reaction vessel in your hand e g in the recess between your thumb and index finger and rotate the glass once This serves to cover the degreased glasses with a light fat film so that the vessel...

Page 45: ...on the heater for Block B The color of the temperature display on the 892 Professional Ranci mat changes to red during the heating phase The color of the temperature display on the 892 Professional Ra...

Page 46: ...start the data recording immediately after inserting each single reaction vessel 4 3 4 Cleaning the accessories 1 Cleaning the measuring vessels and accessories Clean used measuring vessels after pour...

Page 47: ...ghtly on the reaction vessel or the material is brittle 3 Cleaning the tubing Clean the silicone tubing with acetone or 2 propanol or in the dishwasher and rinse with distilled water Pre clean with di...

Page 48: ...3 Cleaning the oil separator bases Clean the oil separator bases with 2 propanol or in the dish washer and rinse with distilled water Pre clean with dishwashing detergent in the case of severe con tam...

Page 49: ...om contamination CAUTION Although this is largely prevented by design measures the power plug should be unplugged immediately if aggressive media have found their way into the interior of the instrume...

Page 50: ...ted materials e g cleaning mate rial properly WARNING Electric shock from electrical potential Risk of injury by touching live components or through moisture on live parts Never open the housing of th...

Page 51: ...5 2 Replacing the dust filter The dust filter 2 15 is mounted on the opening marked with Filter on the rear of the instrument and serves for filtration of the air aspirated through the air pump It mus...

Page 52: ...rument The molecular sieve filled in the drying flask 2 9 serves to adsorb disrup tive oxidizing gases as well as of the water from the aspirated air You can regenerate the molecular sieve in the dryi...

Page 53: ...air flow must be per ceptible If this is not the case please con tact Metrohm Service Check FEP tubing for blockages If neces sary clean or replace Check the thread adapter and the air tube on the re...

Page 54: ...reaction vessel is con nected to the measuring vessel that belongs to the corresponding measuring position The induction times are not reproducible for multiple determi nations The reaction vessels us...

Page 55: ...ing cell is not contaminated Clean if necessary The conductivity measuring cell is contaminated Check the measuring cell and if necessary clean See also The induction times are not reproducible for mu...

Page 56: ...ell which in turn promotes adher ence of gas bubbles Keep the measuring time as short as possi ble by about 4 to 6 h The induction time can be reduced by about half by increasing the temperature by 10...

Page 57: ...responding time period is defined in the method Deactivate the corresponding option in the method Automatic detection of the induction time is not yet possible Keep the determination running until the...

Page 58: ...ure cor rection 0 9 9 C Can be entered manually or determined automatically using the exter nal temperature sensor Temperature mea suring range 0 300 C Resolution 0 1 C Maximum devia tion of the heati...

Page 59: ...in for sensor Pt100 6 1111 010 7 4 Conductivity measurement Sensor Conductivity measuring cell integrated in the measuring vessel cover 6 0913 130 Electrode Conductivity measuring cell with 2 stainles...

Page 60: ...e set range 0 25 L h 5 of the measured value 7 6 USB interface USB connector USB plug type B 7 7 Power socket Nominal voltage range 100 120 V and 220 240 V 10 autosensing Frequency 50 and 60 Hz autose...

Page 61: ...ncimat 53 7 9 Dimensions Material Width 383 mm Height 277 mm without accessories Depth 462 mm Weight 16 1 kg without accessories Cover material Baydur 110 FR 6 with flame retardation for fire class UL...

Page 62: ...to your Internet browser 2 Enter the article number e g 892 into the search field The search result is displayed 3 Click on the product Detailed information regarding the product is shown on various t...

Page 63: ...ts 31 Non liquid pure fats 31 Fuse Replace 22 G Gas flow Range 52 H Heater Range 50 Start manually 37 Switch off 37 Heating period 37 Heating time 51 I Induction time 26 Internal air supply Mount acce...

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