Mash Hardness Tester
TKM-359CE Leeb Method
The TKM-359CE Leeb Method Hardness Tester is made for fast and simple hardness measurements in manufacturing, and field conditions.
Features:
| | - Easy to use
- Ruggedly builts
- Intuitive graphic interface
- Bright color graphic display that allows measurements at below freezing temperatures and it stays bright in any lighting
- Unique system for statistical data processing and averaging of readings
- Special calibration for non-standard materials with one or two known hardness references
- Memory for recorded readings and their analysis
- Fast programming of additional scales with one or two standard test blocks
- Stable measurements independent from force and time of pressing the probe to surface
- Low sensitivity to curvature and roughness of surface
- Monitoring of hardness change along surface
- Control of "volumetric" hardness
- Wide range of metals and alloys
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TKM-359CE Leeb Tester Applications:
| | - All basic types of metals and alloys without
additional calibrations (structural, tool, heat-proof, non-corrosive steels, and alloys, as well as alloys of nonferrous metals, cast-iron, aluminum, bronze, brass) - Items with surface hardening and induction hardening
- Items of complicated configuration
- Heavy and big items with rough surface
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Testing Requirements:
| | - Items heavier than 11 lb. (5 kg) and thicker than 0.24” (6 mm) need no additional preparation
- Hard items (ex. tubes) with expected hardness from 90 to 250 HB and thicker than 0.16” (4 mm) need no additional preparation
- Other items should be fixed on a support plate by fixing paste
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| Hardness Tester Modes |
| Measurement Mode | Readings | Using |
| By basic scales | Basic hardness units (HRC, HB, HV) | Hardness testing of the bulk of products |
| By additional calibration to basic scales | By HRA, HRB, HSD scales and ultimate tensile strength | Hardness testing of high-alloy steels, special cast iron and nonferrous metals |
| By additional scales | Scales are programmed by the user | Special problem solving |
The parameters of the statistical processing of measurements
| | - Maximum, minimum, mean value, standard deviation from the mean
- The average deviation from the values set by a user, results are plus or minus standard value, the maximum deviation in the large/smaller side of the value
- Number of results outside the upper/lower limit of range (user specified), maximum deviation from the upper/lower border
- Automatic rejection of bad or incorrect measurements
- Comparison measurement results of a series of measurements (the comparison charts on the display of the hardness tester)
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Probe Specifications:
| Photo | Probe Type | Length | Diameter | Application |
| D
| 5.4" (138mm)
| 0.8" (21mm)
| Solving of bulk of control problems
|
E
| 5.4" (138mm)
| 0.8" (21mm)
| Probe with indenter made of polycrystalline of boron nitride intended for control of materials with high hardness
|
| G
| 8"
(200mm)
| 1.14" (29mm)
| Control of items with high structural hetrogeneity and roughness Ra from 3.2
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Technical Specifications:
| Accuracy | 3% |
| Rockwell | 1.5 HRC |
| Brinell | 10 HB |
| Vickers | 12 HV |
| Quantity of possible additional scales calibrations | 5 for every scale |
| Quantity of additional scales | 3 |
| Memory Capacity | 12,400 Readings |
| Duration of measurements for average reading calculation | 1-99 |
| Maximum quanitity of named blocks of readings generated in memory | 100 |
| Quantity of algorithms to discard known to be false readings during average value calculation | 3 |
| PC Connections | USB |
| Power Supply | Li-ion accumulator |
| Dimensions of hardness tester electronic unit | 4.8" x 2.7" x 1.6" (121 x 69 x 41mm) |
| Weight of Electronic Unit | 0.66 lbs (0.3kg) |
| Weight of D-Probe | 0.33 lbs (0.15kg) |
| Operating Temperature Range | 5? to 95? F (-15? to 35? C) |
| Warranty Period | 1 year |
Standard Kit Includes:
| | - Electronic unit
 - Rechargeable Battery (pre-installed)
- D-type probe
- Connecting cable
- Charger
- PC cable
- Soft case
- Cuff to fix device on arm
- Bag for carrying and storing
| |
Additional Accessories:
| | - Replaceable probes of different construction and impact force
- Special head "Z-359" to facilitate positioning on complex surfaces
- Connection cables
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