Digital Universal Hardness Tester JHR-187.5D
Brief Introductions:
Brief Introduction
1. Hardness is one of the important mechanic characteristics of the material while the hardness testing is an important method to judge the quality of the metal material or its component parts. The hardness of the metal is correspondent to its mechanic characteristics, and so its mechanic characteristics such as the strength, tiredness, wriggling and wearing out can be tested out approximately through its hardness testing .
2. Digital multi-functional hardness tester with Brinell, Rockwell, Vickers three testing methods,
multi-functional hardness tester of 7 grade testing force, it can meet various hardness test requirement of most metal materials.
3. Test force loading, dwell, unload adopt motor-driven system to switch automatically, no need to be operated by user manually, which avoids testing error caused by human operation, and machine operation is very simple, easy and fast..
4. Dwell time can be set up by user on machine LCD panel, it’s more convenient than manual model hardness tester
5. The change of testing force can be obtained by machine hand wheel rotation, and the indentation is measured by precision encoder and sensor, and hardness value is calculated the hardness value by the internal system program automatically.
6. Machine has an intuitional operating interface, high sensitivity and stability, it is indispensable instrument for workshops and laboratories.
Instrument Features:
Main Functions
1. Three testing methods of Brinell, Rockwell, Vickers
2 .Conversion of different hardness scales
3. Selection of dwell time freely
4. Modifications of time (Year, Month and Date)
5. Output of testing results
6. RS232 interface for optional functions, this model can save testing results and browse testing pages.
Technical Specifications
Specifications:
Item |
Digital Universal Hardness Tester JHR-187.5D |
Rockwell Scales |
HRA;HRB;HRC;HRD |
Rockwell Testing Force |
60kgf(588.4N);100kgf(980.7N);150kgf(1471N) |
Brinell Scales |
HBW1/30;HBW2.5/31.25;HBW2.5/62.5; HBW5/62.5;HBW10/100;HBW2.5/187.5 |
Brinell Testing Force |
31.25kgf(306.5N);62.5kgf(612.9N);100kgf(980.7N);187.5kgf(1839N) |
Vickers Scales |
HV30,HV100 |
Vickers Testing Force |
30kgf(294.2N),100kgf(980.7N) |
Rockwell Hardness Indication |
Analogue Display |
Rockwell Hardness Resolution |
0.1HR |
Brinell Indention Reading |
37.5× Measuring microscope(15× eyepiece and 2.5× objective)
75× Measuring Microscope(15× eyepiece and 5× objective) |
Brinell Value Reading |
Inspect the Brinell hardness table |
Vickers Indention Reading |
75×Measuring Microscope(15×eyepicec and 5× objective) |
Vickers Value Reading |
Inspect the Vickers hardness table |
Dwell Time |
Adjustable 0~60s |
Max.Height of Specimen |
Rocewell:175mm;
Brinell:5× objective: 115mm;2.5× objective: 95mm
Vickers:115mm |
Instrument Throat |
165mm |
Dimension(L×W×H) |
525× 240 × 770mm |
Plywood Packing Dimension |
655 × 385 × 1000mm |
Gross/Net Weight |
130/80kg |
Power Supply |
AC220V/50Hz;110V/60Hz |
Accuracy |
Conform to ASTME-18;ISO6508;EN-ISO6507 |