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Related Manuals for Metrohm 893
Summary of Contents for Metrohm 893
- Page 1 893 Professional Biodiesel Rancimat Manual 8.893.8001EN / 2020-01-28...
- 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 893 Professional Biodiesel Rancimat Manual 8.893.8001EN / 2020-01-28...
- Page 4 Technical Communication Metrohm AG CH-9100 Herisau techcom@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 comments regarding possible errors to the address above.
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Page 5: Table Of Contents
Replacing fuses ..............20 3.3.3 Switching the instrument on and off ........21 Connecting a computer ............22 3.4.1 Connecting the 893 Professional Biodiesel Rancimat and the computer ................22 4 Operation Rancimat method ............... 24 Calibration functions ............25 4.2.1... - Page 6 5 Operation and maintenance General notes ..............36 5.1.1 Care ..................36 5.1.2 Maintenance by Metrohm Service .......... 36 5.1.3 Cleaning the instrument ............37 Replacing the dust filter ............ 38 Regenerating or replacing the molecular sieve ....39 6 Troubleshooting Problems ................
- Page 7 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ Table of figures Table of figures Figure 1 Front 893 Professional Biodiesel Rancimat ......... 6 Figure 2 893 Professional Biodiesel Rancimat rear ........... 7 Figure 3 Instrument display ................8 Figure 4 Mounting accessories for the air supply ........... 11 Figure 5 Drying flask - Individual parts ............
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Page 9: Introduction
The measurements at the individual measuring positions can be started individually for this. The 893 Professional Biodiesel Rancimat is controlled by means of the StabNet computer software and a computer that is connected via the USB interface. Up to 4 instruments can be controlled and monitored by each computer, hence allowing a maximum of 32 samples to be analyzed at the same time. -
Page 10: About The Documentation
This symbol draws attention to a possible hazard due to heat or hot instrument parts. WARNING This symbol draws attention to a possible biological hazard. CAUTION This symbol draws attention to possible damage to instruments or instrument parts. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 11: Safety Instructions
Flammable substances WARNING The heating block of the 893 Professional Biodiesel Rancimat can be heated to 159.9 °C. Flammable substances may ignite at such temperatures. Adjust the oven's maximum heating temperature to the sample that is to be analyzed. - Page 12 ￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 1.3 Safety instructions WARNING Only personnel qualified by Metrohm are authorized to carry out service work on electronic components. WARNING Never open the housing of the instrument. The instrument could be damaged by this. There is also a risk of serious injury if live components are touched.
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Page 13: Flammable Solvents And Chemicals
The correct disposal of your old instrument will help to prevent negative effects on the environment and public health. More details about the disposal of your old instrument can be obtained from your local authorities, from waste disposal companies or from your local dealer. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 14: Overview Of The Instrument
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2.1 Front of the instrument 2 Overview of the instrument Front of the instrument Figure 1 Front 893 Professional Biodiesel Rancimat ® Iso-Versinic tubing (6.1839.000) Measuring vessel cover (6.0913.130) For connecting the reaction vessel to the Contains an integrated conductivity measur- measuring vessel. -
Page 15: Rear Of The Instrument
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 2 Overview of the instrument Rear of the instrument Figure 2 893 Professional Biodiesel Rancimat rear Electrode connector Air supply connector For connecting the conductivity measuring For connecting the FEP tubing 250 mm. cell integrated in the measuring vessel cover. -
Page 16: Instrument Display
Instrument name Measuring vessel cover gray The instrument name display corresponds to This measuring position is not available for the configuration in StabNet. starting a determination (instrument not connected to computer or no method loa- ded). ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... - Page 17 Shows the gas flow measured on block A Shows the measured conductivity. (gray background: gas flow switched off; Dash (-) is displayed = Conductivity cannot white background: gas flow switched on). be displayed (no sensor connected or no valid measuring signal). ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
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Page 18: Setting Up The Instrument
The instrument should be protected against excessive temperature fluctua- tions and direct sunlight. NOTICE In order to improve accessibility of the measuring positions, the instru- ment can also be placed on the optionally available turning ring (6.2059.000). ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 19: Mounting Accessories
Mounting accessories 3.2.1 Mounting the internal air supply The gas in the 893 Professional Biodiesel Rancimat is normally supplied using the internal air pump, which aspirates laboratory air. For air supply and air purification, the following accessories must be mounted on... -
Page 20: Figure 5 Drying Flask - Individual Parts
Screw the other end of the FEP tubing to the From flask connec- ￭ tor on the rear of the 893 Professional Biodiesel Rancimat. Screw one end of the second FEP tubing 250 mm to the second ￭... -
Page 21: Mounting The External Air Supply
If the laboratory air is heavily contaminated, an external gas supply with synthetic air can be provided. For this, the corresponding accessories must be mounted on the rear of the 893 Professional Biodiesel Rancimat . NOTICE If air is supplied externally, the gas flow cannot be regulated in the computer program. -
Page 22: Assembling The Reaction And Measuring Vessels
1 Mounting the FEP tubing Screw one end of the FEP tubing 130 mm to the Air/N in con- ￭ nector (2-12) on the rear of the 893 Professional Biodiesel Ranci- mat. Screw the tubing adapter M6/olive (6.1808.020) onto the other ￭... -
Page 23: Figure 7 Equipping The Reaction And Measuring Vessels
14 Label field For supplying the air to the measuring ves- For attaching labels (e.g. 6.2250.000 lami- sel. nated labels). 15 Connector plug 16 Measuring vessel cover (6.0913.130) Contains an integrated conductivity measur- ing cell. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... - Page 24 Place the reaction vessel cover on the reaction vessel. ￭ NOTICE When mounted without foam barrier, the air tube must be in a vertical position in the reaction vessel. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
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Page 25: Inserting Vessels / Establishing Tubing Connections
Inserting vessels / Establishing tubing connections After you have assembled the reaction and measuring vessels, insert them in the 893 Professional Biodiesel Rancimat and establish the tubing con- nections (see chapter 2.1, page 6) as follows: 1 Inserting the measuring vessel Fill distilled water into the measuring vessel. -
Page 26: Mounting The Exhaust Air Collection Tube
Screw the FEP tubing 250 mm which is connected to the M8/olive ￭ tubing adapter of the 893 Professional Biodiesel Rancimat to the M8/M6 thread adapter of the reaction vessel cover. 3.2.5 Mounting the exhaust air collection tube The optional exhaust air collection tube (6.2757.000) can be mounted on... -
Page 27: Power Connection
Only operate the instrument with a residual current circuit breaker. ￭ If you suspect that moisture has gotten into the instrument, discon- ￭ nect the instrument from the energy supply. Then, notify Metrohm Service. Only personnel who have been issued Metrohm qualification may ￭... -
Page 28: Replacing Fuses
Proceed as follows to replace defective fuses: 1 Pulling out the power cord Pull the power cord out of the power socket of the 893 Profes- ￭ sional Biodiesel Rancimat. ￭￭￭￭￭￭￭￭... -
Page 29: Switching The Instrument On And Off
￭ place. 3.3.3 Switching the instrument on and off The 893 Professional Biodiesel Rancimat is switched on and off using the power switch (2-3). The instrument display is switched on when the instrument is switched on. Figure 10 Instrument display with instrument name... -
Page 30: Connecting A Computer
Connect and set up the 893 Professional Biodiesel Rancimat as follows: 1 Establish a connection between the USB interface (2-16) of the 893 Professional Biodiesel Rancimat and the required USB interface on the computer using the USB cable (6.2151.130). - Page 31 4 Wait for the instrument 893 Professional Biodiesel Rancimat to be detected and installed. 5 Enter the instrument information into the dialog fields of the 893 Professional Biodiesel Rancimat configuration. NOTICE You will find detailed information regarding the StabNet com- puter program in the Tutorial.
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Page 32: Rancimat Method
It has become an accepted method for biodiesel and biodiesel blends in various national and international standards, e.g. EN 15751, EN 14112 and ASTM 6751. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 33: Calibration Functions
As a rule, the time until an increase in conductivity of 50 µS/cm is determined. The cell constant for the conductivity electrode being used has to be calibrated in order to be able to measure the con- ductivity correctly. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 34: Determining The Temperature Correction
Temperature correction indicates the deviation of the current sample temperature from the temperature of the heating block and forms part of the method as a parameter. It can be determined automatically with the calibrated, external tempera- ture sensor. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 35: Figure 15 Assembling The Reaction Vessel For Determining The Temperature Correc- Tion
For supplying air into the reaction vessel. Thread adapter M8/M6 (6.1808.090) O-ring (6.1454.040) Temperature sensor opening Connector For inserting the temperature sensor. For connecting the thread adapter M8/M6. Reaction vessel cover (6.2753.107) Air tube (6.2418.130) Spacer (6.2042.040) 10 Reaction vessel (6.1429.050) ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... - Page 36 893 Professional Biodiesel Rancimat. Connect the temperature sensor to the Pt100 connector (2-14) ￭ on the rear of the 893 Professional Biodiesel Rancimat. NOTICE You will find detailed information regarding the StabNet computer program in the Tutorial.
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Page 37: Determinations
Insert the measuring vessels with the measuring vessel covers into ￭ the openings provided for this on the 893 Professional Biodiesel Rancimat while carefully guiding the connector plugs of the cover into the electrode connectors. -
Page 38: Preparing The Determination
1 Selecting the method (StabNet) In the Workplace program part, click on the symbol within the ￭ block A area and select a Method for block A. If required, also select a method for block B. ￭ ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... - Page 39 If required, also switch on the heater for Block B. ￭ The color of the temperature display on the 893 Professional Biodie- sel Rancimat changes to red during the heating phase. The color of the temperature display on the 893 Professional Biodie- sel Rancimat changes to green once the setpoint temperature has been reached.
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Page 40: Cleaning The Accessories
Screw the pieces of FEP tubing 250 mm to the M8/M6 thread ￭ adapters of the reaction vessel covers and the air supply connec- tors of the 893 Professional Biodiesel Rancimat. Insert the prepared reaction vessels into the recesses of the heat- ￭... -
Page 41: Cleaning The Oil Separator
Pre-clean with dishwashing detergent in the case of severe con- tamination. ® Then heat the Iso-Versinic tubing in the drying oven for 2 ￭ hours at 80 °C. 4.3.4 Cleaning the oil separator The oil separator is available as an optional accessory. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 42: Figure 16 Oil Separator (6.2753.200), Disassembled
Pre-clean with dishwashing detergent in the case of severe con- tamination. Then heat the oil separator bases in the drying oven for 2 ￭ hours at 80 °C. Mount new O-rings where necessary. ￭ ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... - Page 43 Replace the O-rings if they no longer sit tightly on the body or if the material is brittle. 4 Assembling the oil separator Press the base onto the body by hand until it sits flush. ￭ ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
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Page 44: Operation And Maintenance
5.1.2 Maintenance by Metrohm Service Maintenance of the 893 Professional Biodiesel Rancimat is best carried out as part of annual service, which is performed by specialist personnel from Metrohm. If you are frequently working with caustic and corrosive chemi- cals, we recommend a shorter maintenance interval. -
Page 45: Cleaning The Instrument
￭ sockets) from moisture. If you suspect that moisture has gotten into the instrument, discon- ￭ nect the instrument from the energy supply. Then, notify Metrohm Service. Only personnel who have been issued Metrohm qualification may ￭ perform service and repair work on electric and electronic parts. -
Page 46: Replacing The Dust Filter
NOTICE If the suspicion arises that liquids have found their way into the product, disconnect the instrument from the power grid and con- tact your Metrohm service engineer. NOTICE Water or ethanol can be used as a cleaning medium. NOTICE The connectors at the rear of the product must only be cleaned with a dry cloth. -
Page 47: Regenerating Or Replacing The Molecular Sieve
Do not fill the hot molecular sieve directly into the drying flask after regeneration, as otherwise the plastic filter on the filter tube will melt. Wait until the molecular sieve has cooled down before filling. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 48: Troubleshooting
Tighten the FEP tubing on both sides. supply is not connected correctly. The air tube does not Press the reaction vessel cover all the way ￭ immerse in the sample. down. Use more sample. ￭ ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... - Page 49 If the reaction vessel cover is loose on the ￭ reaction vessel despite correct assembly, the cover has to be replaced. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
- Page 50 The conductivity change is Make sure that the value defined for the con- longer/shorter than not correctly defined. ductivity change in the method is correct. expected. See also: The stability times are not reproducible for multiple determinations. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
- Page 51 The evaluation parameters can be optimized on the basis of this curve, or the curve can be evaluated manually. Increase the Evaluation sensitivity ￭ method parameter. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
- Page 52 Increase the value for time or conductivity. ￭ before the endpoint. Deactivate time or conductivity as stop cri- ￭ terion. ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
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Page 53: Technical Specifications
Max. temperature typ. < 0.3 °C difference between different measuring posi- tions per block Temperature fluc- typ. < 0.1 °C tuations (With operating temperature attained, reaction vessels inserted and identically filled and 20 L/h air throughput.) ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 54: External Temperature Sensor
￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭￭ 7.3 External temperature sensor Shutdown temper- 180 ± 7 °C ature (Resetting and troubleshooting carried out by Metrohm Service.) Heating time for approx. 45 min (from 20 °C to 120 °C) the instrument External tempera- < 50 °C ture of the instru- (at operating temperature 150 °C) -
Page 55: Gas Flow Regulation
Fuse Diameter 5 mm, length 20 mm 4.0 ATH (slow-acting) Ambient temperature Nominal function +5 - +45 °C range (at 20 - 80% humidity) Storage –20 - +70 °C Transport –40 - +70 °C ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 56: Dimensions/Material
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 UL94VO, CFC- free Base material Steel sheet, coated ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat... -
Page 57: Accessories
Downloading the accessories list 1 Enter https://www.metrohm.com/ into your Internet browser. 2 Enter the article number (e.g. 893) into the search field. The search result is displayed. 3 Click on the product. Detailed information regarding the product is shown on various tabs. -
Page 58: Index
Determine ......26 Determination Heating time ......46 Temperature measurement Prepare ....... 30 Measuring range ....45 Disassemble Reproducibility ....45 Accessories ......34 Induction time ......24 Resolution ......45 Oil separator ....... 34 ￭￭￭￭￭￭￭￭ 893 Professional Biodiesel Rancimat...
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