Roughness Tester SRT210

Calibration Certificate: All of our products coming with original calibration certificate. Also, every week there are hundreds of our products are getting third party calibration certificates (such as UKAS and NIST approved institutes and companies) in Europe and North America.  1.1 Features LCD display of 128×64 matrix is used. Converts to all common hardness scales(HV ,HB,HRC,HRB,HRA,HS). English displaying and menu operating, the operation is easy and convenient. With RS232 interface, multiple communication modes are adopted to meet customized requirements of various users. Equipped with 7 types of impact devices which need not to be recalibrated when changing them, the system can identify the type of impact device automatically. Max 600 groups?impact times:32?1?of data can be stored at internal non volatile data storage. Upper and lower limit of hardness can be preset; When the tested value exceeds the limits, alarm will send out automatically to make convenient for the requirements of batch measurements. Back light display has been used to make convenient for the use in poor light. Test values software calibration function. Material of “cast steel” is added; HB values can be read out directly when D/DC impact device is used to measure “cast steel” work piece. Printer be separated from main unit and copies of testing results can be printed as required. Power is two of AA battery. Continuous working period: approx. 100 h (no back light on). Software of PC can be installed according to the requirements of user, the function will be more powerful to satisfy the more strict demands of quality control and management. 1.2 Main Application and Testing Range 1.2.1 Main Application The assembled machinery and permanently installed parts Die cavity of molds Heavy work piece Failure analysis of pressure vessel, steam turbo-generator set and other equipment Narrow testing space where work piece installed Bearings and other parts Cases which require the test result with normalized original recording Material identification of the metal material warehouse Quick tests of large range and multipoint measuring positions for heavy workpiece 1.2.2 Testing Range Testing range see table 1 and table 2. Table 1 Material Hardness method Impact device Steel and cast steel D/DC D+15 C G E DL HRC 17.9?68.5 19.3?67.9 20.0?69.5   22.4?70.7 20.6?68.2 HRB 59.6?99.6     47.7?99.9   37.0?99.9 HRA 59.1~85.8       61.7?88.0   HB 127?651 80?638 80?683   83?663 81?646 HV 83?976 80?937 80?996   84?1042 80?950 HS 32.2?99.5 33.3?99.3 31.8?102.1   35.8?102.6 30.6?96.8 Hammered steel HB 143~650           Cold work tool steel HRC 20.4?67.1 19.8?68.2 20.7?68.2   22.6?70.2   HV 80?898 80?935 100?941   82?1009   Stainless steel HRB 46.5?101.7           HB 85?655           HV 85?802           Gray cast iron HRC             HB 93?334     92?326     HV             Nodular cast  iron HRC             HB 131?387     127?364     HV             Cast aluminum alloys HB 19?164   23?210 32?168     HRB 23.8?84.6   22.7?85.0 23.8?85.5     Brass(copper-zinc alloys) HB 40?173           HRB 13.5?95.3           Bronze (copper-aluminum/copper-tin alloys) HB 60?290           Wrought copper alloys HB 45?315           1.3 Types and specification No. Material HLD Strength ?b(MPa) 1 Mild steel 350?522 374?780 2 High-carbon steel 500?710 737?1670 3 Cr steel 500?730 707?1829 4 Cr-V steel 500?750 704?1980 5 Cr-Ni steel 500?750 763?2007 6 Cr-Mo steel 500?738 721?1875 7 Cr-Ni-Mo steel 540?738 844?1933 8 Cr-Mn-Si steel 500?750 755?1993 9 Super strength steel 630?800 1180?2652 10 Stainless steel 500?710 703?1676 Table 3 Non conventional impact devices DC(D)/DL D+15 C G E Impacting energy Mass of impacting body 11Mj 5.5g/7.2g 11mJ 7.8g 2.7mJ 3.0g 90mJ 20.0g 11mJ 5.5g Test tip Hardness Diameter of test tip Material of test tip 1600HV 3mm Tungsten carbide 1600HV 3mm Tungsten carbide 1600HV 3mm Tungsten carbide 1600HV 5mm Tungsten carbide 5000HV 3mm synthetic diamond Impact device Diameter Impact device Length Impact device Weight 20mm 86(147)/ 75mm 50g 20mm 162mm 80g 20mm 141mm 75g 30mm 254mm 250g 20mm 155mm 80g Max. hardness of workpiece 940HV 940HV 1000HV 650HB 1200HV Mean roughness of workpiece surface of the Ra 1.6?m 1.6?m 0.4?m 6.3?m 1.6?m Min. weight of sample Measure directly Need support firmly Need coupling tightly >5kg 2?5kg 0.05?2kg >5kg 2?5kg 0.05?2kg >1.5kg 0.5?1.5kg 0.02?0.5kg >15kg 5?15kg 0.5?5kg >5kg 2?5kg 0.05?2kg Min. thickness of sample coupling tightly Min.layer thickness for surface harden 5mm ?0.8mm 5mm ?0.8mm 1mm ?0.2mm 10mm ?1.2mm 5mm ?0.8mm Size of tip indentation Hardness 300HV Indentation diameter 0.54mm 0.54mm 0.38mm 1.03mm 0.54mm Indentation depth 24?m 24?m 12?m 53?m 24?m Hardness 600HV Indentation diameter 0.54mm 0.54mm 0.32mm 0.90mm 0.54mm Indentation depth 17?m 17?m 8?m 41?m 17?m Hardness 800HV Indentation diameter 0.35mm 0.35mm 0.35mm --- 0.35mm Indentation depth 10?m 10?m 7?m --- 10?m Available type of impact device   D: General test D+15: groove or reentrant surface C: small, light, thin parts or surface of hardend layer G: large, thick, heavy or rough surface steel E: super high hardness material   DC: Hole or hollow-cylindrical test           DL: Slender narrow groove or hole test