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M&A INSTRUMENTS YHT-100 Operation Instructions Manual

Leeb hardness tester
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YHT-100 Leeb Hardness Tester

Operation Instructions

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Summary of Contents for M&A INSTRUMENTS YHT-100

  • Page 1: Operation Instructions

    YHT-100 Leeb Hardness Tester Operation Instructions...

  • Page 2: Table Of Contents

    Contents 1 General description............... 3 1.1 Features .................. 3 1.2 Main Application and Testing Range ........3 1.3 Types and specification ............6 1.4 Operating conditions: ............. 9 2 Structure features and Testing principle ........10 2.1 Structure features ..............10 2.2 Testing principle..............
  • Page 3 7 Trouble shooting ................36 8 Maintenance ................36 8.1 Impact device ............... 36 8.2 Standard maintenance procedures ........36 9. Notice of Transportation and Storage........36 10. Non-warranty part ..............36...

  • Page 4: General Description

    1 General description 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 USB interface, multiple communication modes are adopted to meet customized requirements of various users.
  • Page 5  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.
  • Page 6 Table 1 Impact device Hardness Material method D/DC D+15 Gray cast 93～334 92～326 iron Nodular 127～ 131～387 cast iron Cast 19～164 23～210 32～168 aluminum 23.8～ 23.8～84.6 22.7～85.0 alloys 85.5 Brass(copp 40～173 er-zinc 13.5～95.3 alloys) Bronze (copper-alu minum/cop 60～290 per-tin alloys) Wrought copper 45～315...

  • Page 7: Types And Specification

    1.3 Types and specification Remarks Main unit D type impact device Small supporting ring Standard Delivery Nylon brush (A) High value Leeb test block USBCommunication cable DataView Software Printer Additional In case of choosing Nylon brush （II） Optional type impact Delivery device Various non-conventional...
  • Page 8 Mean roughness of workpiece surface of 1.6μ m 1.6μ m 0.4μ m 6.3μ m 1.6μ m the Ra Min. weight of sample Measure directly >5kg >5kg >1.5kg >15kg >5kg Need support firmly 2～5kg 2～5kg 0.5～1.5kg 5～15kg 2～5kg Need coupling tightly 0.05～2kg 0.05～2kg 0.02～0.5kg...
  • Page 9 Table 4 Sketch of non conventional Code Type Remarks supporting ring For testing cylindrical outside surface 03-03.7 Z10-15 R10～R15 For testing cylindrical outside surface 03-03.8 Z14.5-30 R14.5～R30 For testing cylindrical outside surface 03-03.9 Z25-50 R25～R50 For testing cylindrical inside 03-03.1 surface HZ11-13 R11～R13...

  • Page 10: Operating Conditions

    For testing spherical inside 03-03.1 surface HK11-13 SR11～SR13 For testing spherical inside 03-03.1 surface HK12.5-17 SR12.5～SR17 For testing spherical inside 03-03.1 surface HK16.5-30 SR16.5～SR30 For testing cylindrical outside surface, 03-03.1 radius adjustable R10～∞ 1.4 Operating conditions: Ambient temperature: -10℃～40℃ Relative humidity: ≤90％ No vibration, no strong magnetic field and no corrosive medium and heavy dust in ambient environment.

  • Page 11: Structure Features And Testing Principle

    2 Structure features and Testing principle 2.1 Structure features 2.1.1 Hardness Tester 1: Main unit HARD. 2: Impact device DIR. AVE. MENU DIGITAL HARDNESS TESTER 2.1.2 Main unit HARD. DIR. AVE. MENU DIGITAL HARDNESS TESTER 1: Shell 2: Communication socket 3: Impact device socket 4: Keypad 5: LCD screen...
  • Page 12 2.1.3 D type impact device Release button Loading sheath Guide tube Coil part Connection cable Impact body Support ring 2.1.4 Non conventional types of impact devices D+15...

  • Page 13: Testing Principle

    2.2 Testing principle Let a impact body whose weight is definite rush into the surface of sample, the hardness value comes from the rate of rebound velocity and rush velocity at 1mm distance from testing surface. The calculation formula is following: HL=1000×...

  • Page 14: Dimension Size And Weight

    3.2 Dimension size and weight 152×76×33mm 3.2.1 Dimension (main unit) 3.2.2 Weight approx. 0.6kg (main unit); Table 5 Type of hardness value of Error of Repeatability of impact standard Leeb displayed displayed value device hardness block value ±6 HLD 760±30HLD 6 HLD ±10 HLD 530±40HLD...
  • Page 15  workpiece supporting —— Support is not necessary for heavy test workpiece —— The workpiece with medium weight must be placed on flat and solid plane, and it must be placed stably without any shaking.  Enough thickness of workpiece is necessary, and the min. thickness should comply with the specification in table 3.

  • Page 16: Testing

    4.2 Testing  A standard hardness block should be used to check the the tester prior to the testing; and the reading value error and repeatability should not be more than the specification in table 5. Note: the hardness value of standard hardness test block can be measured via a Leeb hardness tester which had been calibrated;...
  • Page 17 4.2.3 Testing  Press down the release button on the top of the impact device to make a test. At this point, the test sample, impact device and the operator are all required to be stable; and the force direction should comply with the axis of the impact device.
  • Page 18 4.2.4 Read measured value 4.2.5 Print out result For specific setting method, see 6.3.3 and 6.6. 4.2.6 Press 【 】 key to turn off 4.2.7 The processing of testing results The mean value of five valid testing points can be served as a testing data of Leeb hardness.

  • Page 19: Special Prompts

    5 Special prompts  Replacing impact device must be performed under the condition of turn off, otherwise the impact device type can not be identified automatically, and even it is possible to cause the damage of circuit board of the tester. ...

  • Page 20: Detail Testing Procedures

    6 Detail Testing procedures 6.1 Start-up Press 【 】 key to turn on the equipment, following interface will be displayed. THXXX Hardness Tester XXX CO,.LTD Probe Type：D Tester will check and display the type of impact device. At this point carefully observe whether the type is right or not, then enter the main measuring display interface.
  • Page 21 6.3.1 Explanation of the main display interface Battery information: displaying rest capacity when no charging, and displaying charging degree when charging. Impact direction: current impact direction. Average value indicator: average value will be displayed when impact times setting has been achieved. Hardness scale: the hardness scale of current measuring value.
  • Page 22  Single measured value can be viewed by press 【 】 or 【 】 key, and the average value or latest measured value can be showed again by press 【ESC】 key. The viewing sequence is different by press 【 】 or 【...

  • Page 23: Menu Structure Diagram

    6.4 Menu structure diagram The parameter setting and additional function of equipment can both realized by menu operating. At the main display interface, pressing 【MENU】 key to enter the main menu. Impact direction Average Material Hardness scale Tolerance limit Hard/σ Hard Print current Test Set...

  • Page 24: Measuring Condition Setting

    6.5 Measuring condition setting When in main display interface, pressing 【MENU】 key to enter the main menu. Press 【ENTER】 key to enter 【TEST Test Set Set】menu. Print Function Press 【 】 【 】 key to move cursor Memory Manager to the item which will be set, then press System Set 【ENTER】...
  • Page 25 6.5.2 Mean times setting The mean times can be modified Mean Times in the range of 1～32. ============== Press number key to input the value, and the cursor can move in circles to right automatically. Press 【ENTER】key to finish the change. Press 【ESC】key to cancel the change.
  • Page 26 Following available materials will be displayed in case of 【Hard/ 6.5.3.2 σ 】 is set to【σ 】 Mild Steel Press 【 】 【 】 key to move cursor to High- C Steel the material which will be set. Cr Steel Press 【...

  • Page 27: Print Function

    6.5.5 Tolerance limit setting Press number key to input the Tolerance limit value, and the cursor can move in ***************** circles to right automatically. Press 【ENTER】 key to finish the change. 0960 Press 【ESC】 key to cancel the change. Note: 1. If the setting exceeds the measuring range, the tester will ask operator to reset.
  • Page 28 Print Current Press 【 】 【 】 key to move the cursor to the print function Print Memory required, then press 【ENTER】 to Print All Mem print. Hardness Tester --------------------- No.: 6.6.1 Printing current value Operator: Time:13:40:46 Note: Information about Date:08/08/2010 serial number...
  • Page 29 Information printed Hardness Tester includes: tester name, date, type --------------------- impact device, impact No.: direction, average times, material, group No., single Operator: measured value and average value. ********************** Date:01/09/2010 If the information in the group is Probe Type: D as the same as that in the Impact direc.:+90 Deg previous group, such as date, Average:03...

  • Page 30: Memory Manager

    6.7 Memory manager When in the main display interface, press 【MENU】 key to enter the main menu. Test Set Press 【 】 【 】 key to move the cursor to 【Memory Manager】 . Print Function Press 【 ENTER 】 key to enter Memory Manager menu 【Memory Manager】.
  • Page 31 6.7.2 Viewing from selected group Press 【 View from No. 】 key, Select Group selecting interface will be displayed Press number key to input the value. From 001 to 010 Press 【ENTER】 key to display data ============== in memory from the starting group selected.

  • Page 32: Viewing Interface

    6.7.6 Confirm deletion ============= Confirming interface will be displayed when deleting data in memory. Confirm Delete？ Press 【 】 【 】 key to move cursor to 【 YES 】 , then press ============= 【ENTER】 key to delete the data. Press 【 】...

  • Page 33: System Set

    6.9 System Set When in the main display interface, press 【ESC】 key to enter the main menu. Test Set Press 【 】 【 】 key to move Print Function cursor to【System Set】. Memory Manager Press 【 ENTER 】 key to enter 【System Set】...

  • Page 34: About Software

    case of measured value exceeds the tolerance limit, data deletion or other cases. If 【Auto Down】 is set to 【On】, Power will turn off if neither measurement nor any key operation is performed within 5 minutes. 6.9.1 LCD brightness Set Press 【...

  • Page 35: Software Calibration

    Information about the tester and THXXX embedded software will Version:2.1A displayed on this interface. software version Code:R0050121A embedded software identification SN:R00507080018 are subjected to change due to the upgrading of software without notifying in advance. 6.11 Software calibration The tester and impact device must be calibrated with a standard Leeb hardness test block prior to the first use, or reusing after a long term idle.

  • Page 36: Back Light

    6.12 Back light The LCD display is equipped with an Led Back Light, which supplied for easily use in dark light condition. The Back Light can be turn on or trun off by pressing 【】 at any time when the tester is in operation. 6.13 Turn off the power automatically ...

  • Page 37: Trouble Shooting

    7 Trouble shooting Failure Cause Solution Failure in starting Battery empty Replace battery No measuring value Probe cable open circuit Replace Probe cable Value is inaccurate Calibration data lose over again Calibration 8 Maintenance 8.1 Impact device  After using the impact device for 1000-2000 times, use the nylon brush provided to clean the guide tube and the impact body of the impact device.
  • Page 38 Warranty Card THXXX Hardness Tester Products Type: Main unit No: Impact device No: Service phone code Consumer information Purchasing date: Corporation name Corporation address Consumer name Consumer phone code Malfunction description:...
  • Page 39 Qualified Certificate Products Name::____Hardness Tester ____ Products Type:________THXXX_____ Main unit No:________________________ Impact device No:____________________ The product accords with the technical criteria and is allowed to sell. Quality Check Engineer:_________________ Inspection date:_____________ BEIJING XXX INSTRUMENTS CO.,LTD...
  • Page 40 Leeb Hardness Tester Packing List Appellation Main unit D type impact device Small supporting ring Nylon brush (A) High value Leeb test block Instruction Manual Box Of instrument 10 USB Communication cable Optional DataView Software Optional AA battery Optional Printer Optional Printer cable Optional...

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