HV-50型维氏硬度计
Model HV-50 Vickers Harness Tester

　　HV-50型维氏硬度计采用精密机械技术和光电技术的新型维氏硬度计。
　　该机采用微机控制，通过软键能调节测量光源的强弱，并能试验力保持时间，以LEG显示。该机采用独特的测量转换和测微目镜一次测量读数机构，使用方便，测量精度高。
　　三度计配可选摄影装置，能对所测压痕和材料金相组织进行拍摄，适用于测量微小、薄形试件、表面渗镀处理后的零件，是科研机构、工厂及质检部门进行研究和检测的理想的硬度测试仪器。
　　Vicker's Hardness Tester Model HV-50 is a new Hi-tech product integrating precision mechanical and photoelectrical technologies.
The following highlight some key features and functions of this tester.
--Micro computer control;
--Adjustmetn of lighting souce via soft keys;
--Adjustment of pressure holding time and LED display;
--Unique measurement conversion device and unique micro eyepiece one-time measurement readout device, ensuring easy use and high accuracy.
--Camera for indention photographing and metallography.
The tester is specially designed for testing minute, thin samples or parts after surface coating.  For research institutes, factories labs and QC departments, this is an ideal testing instrument for research or measuring purposes.

试验力:  9.8N(1Kgf),49N(5Kgf),98N(10Kgf),196N(20Kgf),294N(30Kgf),490N(50Kgf)
硬度符号: HV₁HV₅HV₁₀HV₂₀HV₃₀HV₅₀
示值允许差: ±3.0%
试验力施加方法:自动加御试验力
测量显微镜放大倍率:100x
试验力保荷时间:5-60s(范围以5秒为单位,任意设定)
最小检测单位:1μm
试件最大高度:160mm
压头中心到机壁最大距离:135mm
主机重量:约40kg
电源:AC220V/50HZ
外型尺寸（长×宽×高）：（540×220×650)mm
硬度值范围：
5HV－2500HV

Spectifcantions
Testing Pressure:  9.8N(1Kgf),49N(5Kgf),98N(10Kgf),196N(20Kgf),294N(30Kgf),490N(50Kgf)
Hardness Value Symbol: HV₁HV₅HV₁₀HV₂₀HV₃₀HV₅₀
Error Range in Display:  ±3.0%
Pressure Loading & Unloading: 5HV₁-2500HV₁₀
Magnification of Microscope: 100x
Pressure Holding Time:5-60s
Min. Measurable Unit:1μm
Max. Height of Sample:160mm
Distance from Indenter’s center to outerwall:135mm
Main Body Weight:Appro. 40kg
Power Supply:AC220V/50HZ
Machine Size(L×W×H)(540×220×650)mm