Introduction Thank you for choosing a KEM density/specific gravity meter. This density/specific gravity meter (DA-650/DA-645/DA-640) measures density of liquid or gaseous sample with precision in a short span of time. Read this operation manual thoroughly before you use the equipment for correct measurement and for your safety.
Introduction Application Crude oil and petroleum products Density/SG of crude oil, fuel oil (heavy oil, light oil, kerosene, gasoline) or lubricant is measured to obtain reference value for product pricing or taxation. Chemical products Density/SG is important for quality control and management in chemical industries. For organic substance of petroleum industry, it is used for QC of intermediate and finished products, and for inorganic substance of heavy chemical industry, it is for purity control or concentration check.
Caution Plug out power cord Power source for this unit: Do not share power case unit AC 100-240 V as shown below. malfunction Frequency: 50Hz/60Hz possible lightning. Otherwise, the unit Supply power direct from may be broken. power outlet. DA-650/-645/-640...
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Introduction Test sample Warning Some samples chemicals Do not use chemicals that may require protective gloves, generate flammable gas or work glasses and mask in a well in such atmosphere. ventilated room. Be aware of a risk of explosion Splashing chemicals may injure inside the room.
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Maker will not be liable for any loss or damage caused by the use of the product. This manual is written and compiled based on specification of standard model. For custom model, please refer to the specification that accompanies your unit. DA-650/-645/-640...
Measurement Procedures Measurement Procedures Before measurement Change measure condition (temperature, precision) P. 21 Check the unit P. 27 Calibrate the unit P. 23 How to measure Start measurement P. 31...
Prepare materials for measurement Ethanol for cleaning and drying, pure water for calibration, etc. STEP Set up measure condition Temperature, stability sense, limit time, etc. STEP Calibration Follow navigation guide on display for calibration. STEP Measurement Now ready to measure your sample. DA-650/-645/-640...
Open the carton box and check supplied parts with below parts list. Unpack the carton The box contains the main unit of DA-650, DA-645 or DA-640 together with accessories and parts including a copy of the operation manual. Check with the parts list shown below.
The 2P outlet needs grounding by adding an AC-3P adapter. Ground the earth by connecting the green wire to the earth terminal on the outlet. Install desiccant container. Install the desiccant onto main unit. Squeeze in the desiccant container. DA-650/-645/-640...
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1. PreParation Install printer to main unit. Install a printer. (Printer is an option.) <Thermal Printer> Place the printer on the stand. Put the AC adapter. Plug the connecting cable (USB) into USB connector. Turn on the power. <Dot Matrix Printer> Put the AC Adapter.
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The waste container (an empty bottle or tank) must be Warning made of resistant material. Handle with care if it is made of glass. Waste liquid is harmful. Drain it out when it reaches sixty (60) Note percent of the container. DA-650/-645/-640...
2. Parts Configuration 2. Parts Configuration Part names and respective locations are shown below. Front Touch screen Stylus Holder Stylus Sample/Drain Lever Sampling Speed Controller Cell Window Exhaust Vent (at the bottom) Intake Vent (Dustproof Filter) Part name Function Touchscreen Density meter can be operated by a touch on screen.
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This port is for PC data manipulation. Power Switch Power is turned On or Off by this switch. Power Connector The supplied AC adapter plug is connected here. (AC Adapter) Sampling Unit This unit is for sampling test liquid or solvent. DA-650/-645/-640...
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2. Parts Configuration Main panel (Periphery) PUMP key PURGE key HOME key Sucks in sample liquid or Sends dry air to measuring Returns to main window. solvent. cell. START key RESET key MENU key Starts measurement. Aborts measurement Setup window appears returns to standby mode.
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Shows both current Shows current condition of Description” (6-1-2 Edit the setup temperature here. the event like measurement method). When pressed, shows underway or calibration in window to select measure process, etc. temperature. See 3-3 Set up measure condition. DA-650/-645/-640...
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2. Parts Configuration Entry window Here is the window for entry of characters and numbers. Enter characters in alphabetical letters and numbers. To confirm the entry, press “Enter.” Capital or small letters can be selected. Up to 16 letters/numbers can be entered; sample ID can accept up to 32 characters.
30 °C or smaller from the previous one. Required warm-up time is as follows: Model Warm-up time DA-650 Approx. 60 mins DA-645 Approx. 30 mins DA-640 Approx.
3. Preparation for Measurement 3-2. Necessary tools Prepare the following tools for measurement. Tools for sampling Beaker A beaker is necessary when sampling test liquid by sampling pump. Sampling pipette, syringe Necessary for a viscous sample (lubricant, honey syrup, etc.) or liable with air bubble. Tools for cleaning sampling tube Waste cloth Wipe off residual sample liquid or solvent in order to prevent from self-contamination.
When it exceeds the limit time, measurement is aborted with results on display. Range: 0 ~ 9999 sec. 0 means (infinite), which does not abort measurement. For other details of setup, press Menu => Method. For Hint details, refer to the separate Function Description. DA-650/-645/-640...
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3. Preparation for Measurement List of stability (measurement mode) Stability Accuracy Level Mode DA-650 DA-645 DA-640 Slow ±0.00002 ±0.00005 ±0.00010 Normal ±0.00002 ±0.00005 ±0.00010 Fast ±0.00005 ±0.00005 ±0.00010 Quick ±0.00010 ±0.00010 ±0.00010 Level: 3 (Quick) Oscillation frequency is predicted where temperature of sample and cell differs from each other to a large extent.
Press “PUMP” to suck rinse 2 and clean the cell. (for about 10 sec) Press “PUMP” to stop pump operation. For quick cell cleaning: when rinsing the cell, suck air and Hint water alternately by detaching sampling tube from water at intervals. DA-650/-645/-640...
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4. Calibration and Check Dry the cell Sampling tube Wipe off sampling tube with waste cloth and put it in drying tube. Press “PURGE” twice. A message of “Auto drying” will appear, and equipment starts to dry the cell. Drying tube Once completed, equipment beeps Put in.
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Once completed, equipment beeps. Print out calibration results Once calibration is completed, equipment beeps and main screen as shown on the right appears. Then calibration results and factors will be printed out. Printout example of calibration results “Failed” shown when calibration fails. DA-650/-645/-640...
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4. Calibration and Check Clean the cell (rinse 2) Press “PUMP” to start to drain, and wait until water is depleted from the cell. Make sure sample/drain lever is on “Drain.” Wipe off tip of sampling tube with waste cloth. Put the tube in rinse 2 (ethanol or acetone).
Press “PUMP” to clean the cell with rinse 2. (for about 10 sec) Once completed, press “PUMP” to stop operation. For quick cell cleaning: when rinsing the cell, suck air and Hint water alternately by detaching sampling tube from water at intervals. DA-650/-645/-640...
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4. Calibration and Check Dry the cell Sampling tube Wipe off sampling tube with waste cloth and put it in drying tube. Press “PURGE” twice. A message of “Auto drying” will appear, and equipment starts to dry the cell. Once completed, equipment beeps and Drying tube pump stops running.
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Once completed, equipment beeps and Drying tube pump stops running. Put in. For quick cell cleaning: when rinsing the cell, suck air and Hint water alternately by detaching sampling tube from water at intervals. DA-650/-645/-640...
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4. Calibration and Check The criteria of determining OK or NG by Check can be Hint configured on “Menu” ”Check & Calibrate”. For details, refer to the separate Function Description. check record stored “Menu” ”Data Hint control” ”Check data”. For details, refer to the separate Function Description.
Wipe off sampling tube with waste cloth and put it in drying tube. Press “PURGE” twice. A message of “Auto drying” will appear, and equipment starts to dry the cell. Once completed, equipment beeps and Drying tube pump stops running. Insert DA-650/-645/-640...
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5. Measurement Sampling Adjust sample/drain lever to “Sample.” Adjust sampling speed controller to slowest (scale 0). Press “PUMP” to start sampling. Slowly turn the controller until you reach optimal speed for sampling. Check through cell window to make sure there is no air bubble in the cell. Press “PUMP”...
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Wipe off tip of sampling tube with waste cloth. Put the tube in rinse 1 (pure water or toluene). Press “PUMP” to clean the cell with rinse 1. (for about 10 sec) Once completed, press “PUMP” to stop pump operation. DA-650/-645/-640...
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5. Measurement Clean the cell (rinse 2) Make sure sample/drain lever is on “Drain.” Wipe off tip of sampling tube with waste cloth. Put the tube in rinse 2 (ethanol or acetone). Press “PUMP” to clean the cell with rinse 2.
Wipe off sampling tube with waste cloth and put it in drying tube. Press “PURGE” twice. A message of “Auto drying” will appear, and equipment starts to dry the cell. Once completed, equipment beeps and Drying tube pump stops running. Put in. DA-650/-645/-640...
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5. Measurement Inject sample Remove sampling tube, and put a syringe adapter in sample inlet. Insert syringe that contains sample in syringe adapter. Inject sample into measuring cell. Put a beaker at the end of drain tube. (If you wish to use supplied tube holder, put tip of drain tube in tube holder beforehand.) Check through cell window to make sure...
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For better cleaning the cell, first suck in sample liquid in cell Hint with syringe. Drain sample Put drain tube in sampling pump. Put sampling pump in sample inlet. Adjust sample/drain lever to “Drain.” Press “PUMP” to drain sample. DA-650/-645/-640...
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5. Measurement Clean the cell (rinse 1) Make sure sample/drain lever is on “Drain.” Wipe off tip of sampling tube with waste cloth. Put the tube in rinse 1 (pure water or toluene). Press “PUMP” to clean the cell with rinse 1.
You can select, register, copy or delete Selection of method, method files in Method window. Up to 100 entry, delete files are available. 6-1-2 You can edit parameters of stored methods Method editing including “Measure”, “Display item”, “Sequence, “Temperature compensation”, “Report” and “Barcode”. DA-650/-645/-640...
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6. Convenient & Useful Functions Menu Submenu Description Outline Effective work by skipping setups and data Sample manipulation on a number of different samples is made possible, and convenient tools are provided including sample files for continuous measurement both in single mode and multi-mode with sample changer, the auto-mode of barcode reader, concentration scanning to a create table and temperature...
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, which can be manipulated on PC. 6-3-4 You can delete data (past record of Memory Clear measurement, check and calibration) and initialize all the measure conditions (method and sample file) to default. (Note) It is recommended to keep those data separately. DA-650/-645/-640...
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6. Convenient & Useful Functions Menu Submenu Description Outline These functions described here provide user Function with convenient tools including the automatic start, which is most useful for QC at lab or in production line. 6-4-1 Permeability of air bubble can be determined Multiple by the automatic mode which offers a plural Measurement...
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The energy saving cell temperature control is Temp Control built in. The temperature control (T/C) turns on or off by itself or by user programmed timer. All these functions are selectable by user. 6-5-6 Serial No. and software version of equipment Version are shown. DA-650/-645/-640...
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6. Convenient & Useful Functions Menu Submenu Description Outline Security protects your equipment, which can Security be used only by the operator who has a password just like a personal computer. The authority of operator differs from manager who controls the authority. Therefore, the operator is the user who is authorized only to operate the equipment.
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You can view in graph the calibration record Calibration Record of past 10 years (changes of oscillation frequency). Up to 20 record of calibration can be printed out or stored in USB flash drive. Data stored manipulated on PC. DA-650/-645/-640...
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6. Convenient & Useful Functions Menu Submenu Description 6-7-6 You can view in graph the check record of Check/Calibration Check Record past years (changes oscillation frequency). Up to 20 record of check can be printed out or stored in USB flash drive. Data stored in USB can be manipulated on PC.
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The temperature compensation (T/C) works Temp Comp when measurement impractical temperature, the sample is measured at different degrees and the density is obtained by correcting it to original temperature. You can select and register the formula for T/C here. DA-650/-645/-640...
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6. Convenient & Useful Functions Menu Submenu Description Outline The convenient optional peripherals are Option available other than standard supplied printer. They are: Auto sampling unit, Multiple sample changer, External cell, Barcode reader, Data acquisition software. They are connected to your density meter by matching digital configuration.
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6-10-2 When the optional auto sampling unit Rinse & Purge (DCU-551, DCU-600) or multiple sample changer (CHD-502) is connected, the event of rinse and purge dry can be commanded on display screen of density meter. DA-650/-645/-640...
7. Maintenance 7. Maintenance Since such precision scientific instrument like density meter is liable to be affected by how, where and for what application the unit has been in use. Therefore, daily and periodic maintenance is necessary as prescribed below. 7-1.
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Criteria Temp stability difference between temperature reading and set temperature must be within the following ranges: DA-650: ±0.02°C (When set temp is 10~30°C.) ±0.05°C (whole range) DA-645: ±0.03°C (When set temp is 10~30°C.) ±0.05°C (whole range) DA-640: ±0.05°C Connecting cable The connecting cables must be securely connected in place.
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7. Maintenance Customer support service (paid service) KEM provides customer support service for your Density/Specific Gravity Meter according to the ISO 9001, International Standard for Quality Management System. We also supply Density Standard Liquids. It is recommended that our JCSS-accredited Density Standard Liquids be used. JCSS-accredited Density Standard Liquid Logo mark is the symbol of an accredited calibration laboratory based on the Measurement Law.
Close the cover. Once filled, put the sponge on Close the cap by turning. the top and close the cover. Place sponge. DA-650/-645/-640...
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7. Maintenance Replacement of pump tube The pump tube may deteriorate over time. Replace it as appropriate. The initial flow rate by pump is approximately 7mL/10 sec. As pump tube deteriorates, flow rate goes down, and eventually sample liquid may leak. If sample leaks from tube end, the tube must be changed with new one.
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Fix the adapter with lock nut tentatively. Put on seal washer. Put on wave washer. Tighten adapter joint (with lock nut). Tighten lock nut. Do not tighten the adapter nut and lock nut too hard. Note Otherwise, the tube may be broken. DA-650/-645/-640...
8. Troubleshooting 8. Troubleshooting Some of typical problems you may encounter would be: “Measurement is not started,” “Measurement does not come to an end,” or “Results are not stable.” Refer to the following troubleshooting as necessary at time of trouble. 8-1.
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(sample connection. changer or any other Check from your option unit) Density/Specific Gravity connected Meter as follows: “MENU” configured. -> “Option” -> “Changer” -> “Model” . Then make sure if CHD-502, DCU-551 or DCU-600 is selected. DA-650/-645/-640...
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8. Troubleshooting Error message Possible cause Action Periodic check The alarm appears when Periodic check schedule is overdue. the date for check or overdue, check calibration is overdue. calibrate now, and you can cancel the alarm. The message will disappear. When interval changed,...
When the sample is highly viscous, sampling by pump takes a long time. takes a long time. Use syringe instead. It does not print out. Digital configuration with printer may be wrong. Refer to separate Function Description (6-9-3). DA-650/-645/-640...
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8. Troubleshooting Sample type Technical tips Cell window mists. When running for many hours (e.g. 24h) while ambient temperature and humidity are high (e.g. 35°C, 85%RH) and the cell temperature is low (e.g. 15°C), the cell window may mist. Blow dry air through the air intake vent for about 10 minutes.
“Index.” 9-1. Parts and consumables Here is the list of parts and consumables with part number. Please refer to the list when you place an order. Parts and consumables for DA-650/DA-645/DA-640 are as shown below: Parts Part Name Part Number...
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12-02618-03-48 For U.S.A. 110~120V 12-02618-04-48 For China (PRC) 220~240V Thermal Printer 12-02850-00-48 Incl. fixing screws. Stand *If you wish to connect your IDP-100, which had been connected with your DA-520/-510/-505/-500, with the DA-650/-645/-640, an optional connecting cable (MiniDIN8P-DSUB9P:64-00625-00-48) is required.
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61-00021-00-48 0.970** 3 bottles/set 30% ethanol 61-00035-00-48 0.964** 3 bottles/set 35% ethanol 61-00055-00-48 0.958** 3 bottles/set 40% ethanol 61-00022-00-48 0.948** 3 bottles/set 0.980** 15%/25%/40% 61-00023-00-48 0.970** One bottle each ethanol 0.948** * Each liquid is in a 20mL vial. DA-650/-645/-640...
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9. Additional Information Ethanols of 45 to 100% are also available. Hint Contact your local distributor for details.
By measuring standard substance of which density is known (density: da, dw), the oscillation frequency Ta, Tw are obtained, and then factor F. F can be calculated from calibration. − π − Therefore, density is obtained by measuring oscillation frequency T of unknown substance. − − DA-650/-645/-640...
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9. Additional Information Principle of viscosity correction The oscillation-type density meter is under the influence of viscosity. Viscosity compensation corrects the effect of viscosity. Since low viscous standard liquid is used for calibration liquid (reference), measurement of highly viscous sample would turn out to be higher than true value. The effect of viscosity when measured is as follow: Low-viscosity liquid (water, Japanese sake, whisky): less than 5mPa·s The effect: 0.0001g/cm...
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9. Additional Information Flow chart of oscillation-type density meter (DA-6xx series) DA-6xx series features shortened drying time and free selection of waste container by providing drying pump (A.P.) and sampling pump (P.P) separately. DA-650/-645/-640...
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9. Additional Information Density Mass (e.g. gram) per unit volume (e.g. cm Specific gravity (SG) (= relative density) SG is the ratio of mass between a substance and reference standard. Typically, water (4°C unless otherwise specified) is designated as reference for solid and liquid.
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From the above, below equation derives: SG (15/4°C) = 1443/(1443+sake degree) Ethanol degree Unit of volume percentage of ethanol and water Table of Ethanol degree and density is available. Reference temperature is 15°C. This unit is used in quality control of alcohol in beverages. DA-650/-645/-640...
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9. Additional Information Extract Scale name for extracted component of solution (Japanese sake). The following formula is obtained from SG d from ethanol degree and SG d (15/4°C) from Japanese sake degree: Extract = (d )×260+0.21 API degree (API Baume’s degree) This is the unit for SG of crude oil defined by the American Petroleum Institute.
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Standard Deviation Expressed by showing dispersion of statistics or random variable: − RSD (Relative Standard Deviation) RSD is SD divided by Mean, showing how dispersed against the average. RSD is the same as Coefficient Variable (CV). RSD = × DA-650/-645/-640...
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9. Additional Information Density of dry air Density of dry air can be calculated from below formula: (°C), P (hPa). 0012932 (g/cm ⋅ 00367 1013 ° Below chart shows density of dry air at 1013.25hPa by 5-place equipment. Temp Density Temp Density Temp...
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9. Additional Information Density of pure water Below chart shows density of pure water by 5-place equipment. Temp Density Temp Density Temp Density Temp Density (°C) (g/cm (°C) (g/cm (°C) (g/cm (°C) (g/cm 0.99984 0.99705 0.98804 0.97484 0.99990 0.99679 0.98758 0.97424 0.99994 0.99652...
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Values of 0~40°C in this chart are based on calculations formulated by CIPM (Comité international des poids et mesures; International Committee of Weights and Measures) in regard to the density of SMOW (Standard Mean Ocean Water); those of 41~90°C by IAPWS-95. DA-650/-645/-640...
Auto Clean and Sampling Unit DCU-551N DCU-600 Operation from your PC ƒf [ƒ^ Žû W ƒ\ ƒtƒg ƒE ƒF ƒA Title:SOFT-CAP Measurement KYOTO ELECTRON ICS data transfer to your PC Data Capture Software SOFT-CAP Contact your local distributor for details.
9. Additional Information 9-4. Specifications Specifications of three models: DA-650, DA-645 and DA-640. Model DA-650 (5-place) DA-645 (4.5-place) DA-640 (4-place) Measurement Method Resonant frequency oscillation Measurement Range 0 ~ 3 g/cm Temperature Range 0 ~ 90 °C (32 ~ 194 °F)
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9. Additional Information Dimensions 320 (W) × 382 (D) × 272 (H) mm (12.6 (W) × 14.3 (D) × 10.7 (H) inches) Weight 18 kg (39.7 lbs) Export Packing in Double G/W 21 kg; 540 (W) × 480 (D) × 460 (H) mm (May vary in some cases.) Carton Box (G/W 46.3 lbs;...
9. Additional Information 9-5. International standards The DA-650, DA-645 and DA-640 comply with the following international standards: Standard Country ASTM (American Society for Testing and Materials) U.S.A. DIN (Deutsches Institut für Normung) Germany Her Majesty’s Revenue and Customs (HMRC) U.K.
9-7. Warranty and after-the-sale service Warranty period One year after the date of purchase Warranty The product you have purchased passed stringent in-line testing and inspection at KEM, however, if you should find any defects, your unit is under warranty for free repair or replacement except consumables, provided the unit has been in normal use and operated to the specification.
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O v e r s e a s S a l e s & M a r k e t i n g D i v i s i o n 9 F, Ya m a w a k i B l d g ., 4 - 8 - 2 1 , K u d a n - m i n a m i , C h i y o d a - k u , To k y o 1 0 2 - 0 0 7 4 J a p a n P h : + 8 1 - 3 - 3 2 3 9 - 7 3 3 3 Fa x : + 8 1 - 3 - 3 2 3 7 - 0 5 3 7...
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