w-20韦氏硬度计说明书英文版W-20 Vickers Hardness Tester ManualIntroduction:The W-20 Vickers Hardness Tester is an advanced and reliable instrument used to measure the hardness of various materials. This manual serves as a comprehensive guide to operating and maintaining the W-20 Vickers Hardness Tester. It covers the necessary procedures for conducting hardness tests, interpreting the results, and ensuring the accuracy and longevity of the instrument.Safety Precautions:1. Before operating the W-20 Vickers Hardness Tester, carefully read and understand this manual.2. Always wear appropriate personal protective equipment (PPE), including safety glasses and gloves.3. Keep the work area clean and free from clutter to avoid accidents or damage to the instrument.4. Do not touch the indenter or test piece during the hardness test.5. Turn off the power and disconnect the power cord when not in use or during maintenance.Specifications:- Maximum Test Force: 20 kgf- Test Force Application Method: Automatic loading and unloading- Test Load Dwell Time: 0 - 60 seconds- Test Force Control: Closed-loop system- Test Force Accuracy: ±1%- Test Force Retention Time: 10 - 600 seconds- Indenter: Diamond Vickers- Magnification: 100x- Measuring Range: 8-2900 HV- Test Force Selection: Manual or automaticOperating Instructions:1. Power on the W-20 Vickers Hardness Tester and wait for the system to initialize.2. Select the desired test force and enter the value using the control panel.3. Clean the surface of the test piece and securely fix it onto the testing table.4. Position the indenter above the test piece, ensuring proper alignment.5. Initiate the loading cycle and wait for the test force to be applied.6. Once the dwell time is reached, the test force will be automatically removed.7. The hardness value will be displayed on the control panel, along with the measuring range.8. Record the hardness value and repeat the process for additional tests if necessary.Maintenance and Calibration:1. Regularly clean the indenter and test table with a lint-free cloth and a mild solvent.2. Inspect the indenter for any signs of wear or damage. Replace if necessary.3. Calibrate the W-20 Vickers Hardness Tester annually or as recommended by the manufacturer.4. Perform a calibration check using certified hardness test blocks.5. Follow the provided calibration procedure to ensure accurate hardness readings.6. Keep the instrument in a clean and dust-free environment when not in use.7. Never disassemble the W-20 Vickers Hardness Tester unless authorized by a qualified technician.Troubleshooting:Problem: Inaccurate hardness readings.Solution: Ensure proper calibration and follow the recommended testing procedures. Check the indenter for wear or damage.Problem: System malfunction or error messages.Solution: Restart the instrument and refer to the troubleshooting section of the manual. If the problem persists, contact technical support.Conclusion:The W-20 Vickers Hardness Tester is a reliable and precise instrument for measuring the hardness of materials. By following the instructions provided in this manual, users can effectively conduct hardness tests and maintain the accuracy and longevity of the instrument. For any technical issues or further assistance, please refer to the contact information provided in the manual.。
北内道依茨风冷发动机技术参数
北内道依茨风冷发动机是一款具有先进技术的柴油发动机，拥有以下技术参数：
1. 排气量：
2.2L、2.5L、
3.0L、3.5L、
4.0L、4.5L、
5.0L、5.5L、
6.0L、6.5L、
7.0L、7.5L、
8.0L、8.5L、
9.0L、9.5L、10.0L、11.0L、12.0L、13.0L、14.0L、15.0L、16.0L、17.0L、18.0L、19.0L、20.0L。
2. 最大功率：60-300KW。
3. 最大扭矩：245-1000N.m。
4. 发动机类型：水平对置式，4缸、6缸、8缸、12缸、16缸。
5. 燃油消耗率：200-230g/KW.h。
6. 发动机冷却方式：风冷。
7. 发动机启动方式：手动或电动启动。
8. 应用范围：适用于工程机械、船舶、发电机组、农机等领域。
北内道依茨风冷发动机以其出色的性能和可靠的品质，深受用户的喜爱和信赖。
其技术参数的多样化，为不同行业的用户提供了更多选择，是一款值得信赖的发动机产品。
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EWWD120-540MBYN EWLD120-540MBYN-w w w.d a i k i n.e uCooLiNg oNLYHEatiNg oNLYand condenserless chillers*LWE :Leaving Water Evaporator (°C)*LWC:Leaving water condenser (°C)For EWWD240/280/500/520/540For EWWD120/180/360/440Start-up areawater condenserEWWD120-540MBYNLeaving Water Evaporatoreasy installationflow switch standard supplied with the unitwater filter with diameter perforations of 1mm supplied as standard accessorystandard fitted with victaulic joints on evaporator: victualic joints absorb vibrations, reduce operating -sound and thermal deflection and simplify chiller piping and installationthey can accommodate 8° angles and guarantee -stress free, leak tight water piping connectionContinuousareaWater Glycolsinglescrew compressorThe large Daikin chillers are fitted with a G-type single screw compressor with stepless capacity control. The G-type stepless single screw compressor enables capacity requirements to be closely matched by modulating the sliding valve position according to the chilled water control condition. Main advantages of continuous modulation are better part load efficiency and more stable chilled water temperatures with closer control tolerance. Capacity con-trol is infinitely variable between 30 and 100% on single circuit units and between 15 and 100% on dual circuit units.Heat excHangerSHELL & TUBE CONDENSERspecial header distribution system and design of water system results in high efficiency and reduced heat ›transfer surfacecompact dimensions and lower weight result in a smaller refrigerant volume ›BPHE EVAPORATORbrazed plate heat exchanger made of stainless steel plate, brazed gas tight with copper ›optimised distribution benefits of R-134a›the use of this plate heat exchanger results in a compact unit: single and double circuits have the same small footprint ›(2,681mm x 930mm)electronic controladvanced pCO ›2 controldetailed information on and accurate control of ›all functional parameters by easy menu scrolling: schedule timer, floating set point, free cooling, double evaporator pump, manual pump on, date and time information, daily pump onchilled water and brine temperatures down to -10°C ›on standard unit (parameter in the service menu of the DDC controller must be set by the installer)changeable digital input / output such as remote ›on / off, remote cooling / heating, dual setpoint and limit capacityself diagnostic and can be set up in several ›languageslead lag function is standard›standard equipped with night setback and peak load ›limitationoptional digital controller can be installed up to 600m ›from the unitremote DDC (EKRUPC) can be installed up to 1,000m ›from the unitthanks to the standard DICN, simultaneous operation ›of up to 4 chillers is allowed(this function enables a Daikin 2MW chiller plant to be operated via a single controller)s c re wNote:1. For refrigerant charge of EWLD-MBYN, please consult the databookNote:1. For refrigerant charge of EWLD-MBYN, please consult the databookTo install EKBMSMBA, EKBMSBNA --> EKAC200A needs to be installed on the unit o available(S) Option required for Swedish national law SNFS 1992 : 16Measuring conditions1. N ominal cooling capacities are based on: evaporator: 12°C/7°C - condenser: 30°C/35°C (EWWD); condensing temperature: 45°C (EWLD) - liquid temperature: 40°C (EWLD).2. N ominal heating capacities are based on: evaporator: 12°C/7°C - condenser: 40°C/45°C.3. T he sound power level is an absolute value indicating the “power” which a sound source generates.Example of ground cooling in the horticulture sector.E C P E N 09-408 • 300 • 03 / 08 • C o p y r i g h t © D a i k i n P r i n t e d o n n o n -c h l o r i n a t e d p a p e r . P r e p a r e d b y L a M o v i d a . B e l g i u m R e s p o n s i b l e E d i t o r : D a i k i n E u r o p e N .V .. Z a n d v o o r d e s t r a a t 300. B -8400 O o s t e n d eThe present leaflet is drawn up by way of information only and does not constitute an offer binding upon Daikin Europe N.V.. Daikin Europe N.V. has compiled the content of this leaflet to the best of its knowledge. No express or implied warranty is given for the completeness, accuracy, reliability or fitness for particular purpose of its content and the products and services presented therein. Specifications are subject to change without prior notice. Daikin Europe N.V. explicitly rejects any liability for any direct or indirect damage, in the broadest sense, arising from or related to the use and/or interpretation of this leaflet. All content is copyrighted by Daikin Europe N.V.Daikin Europe N.V. is approved by LRQA for its Quality Management System in accordance with the ISO9001 standard. ISO9001 pertains to quality assurance regarding design, development, manufacturing as well as to services related to the product.ISO14001 assures an effective environmental management system in order to help protect human health and the environment from the potential impact of our activities, products and services and to assist in maintaining and improving the quality of the environment.Daikin units comply with the European regulations that guarantee the safety of the product.Daikin Europe N.V. participates in the Eurovent Certification Programme for Air Conditioners (AC). Liquid Chilling Packages (LCP) and Fan Coil Units (FC); the certified data of certified models are listed in the Eurovent Directory.Certification is valid for air cooled models <600kW and water cooled models <1500kW.Daikin’s unique position as a manufacturer of air conditioning equipment, compressors and refrigerants has led to its close involvement in environmental issues.For several years Daikin has had the intention to become a leader in the provision of products that have limited impact on the environment. This challenge demands the eco design and development of a wide range of products and an energy management system, result-ing in energy conservation and a reductionof waste.Naamloze Vennootschap Zandvoordestraat 300B-8400 Oostende, Belgium www.daikin.eu BTW: BE 0412 120 336RPR OostendeFSCenvironmental awarenessDaikinand the EnvironmentIn recent years, motivated by a global awareness of the need to reduce the burdens on the environment, some manufacturers including Daikin have invested enormous efforts in limiting the negative effects associated with the production and the operation of chillers.Hence, models with energy saving features and improved eco-production techniques have seen the light of day, making a significant contribution to limiting the impact on the environment.。
