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The Phase II PHT-2500 brings portable hardness testers to a new dimension. A “state-of-the-art”, menu-driven, multi-functional instrument, this portable hardness tester has extended memory functions and rs-232 output capability. Utilizing external probes, this offers the operator greater versatility when specialized applications arise. This is a decided advantage over integrated/fixed probe style portable hardness testers.
Designed for precise, accurate readings, the PHT-2500 portable hardness testers are run with the best menu-driven interface in the business. Easy to use, results easily convert to Brinell, Rockwell, Vickers, Shore and Leeb hardness scales. Automatic mean value, large data storage capabilities, LCD w/backlight and RS-232 output make these truly “WORLD-CLASS” portable hardness testers.
Simply put, the Phase II PHT-2500 portable hardness tester is the most accurate, versatile, portable hardness tester on the market today.
Standard Accessories:
- Base instrument
- Impact device D
- Calibrated test block
- Custom carry case
- Cleaning brush
- Operation manual
Optional accessories:
- Micro printer
- Impact devices; DC, D+15, DL, G, C
- Software
- Special support rings
- Printer cable
Specifications:
- Accuracy: +/- 0.5% (referred to L=800, repeated accuracy: +/- 4L units)
- Measuring range: 200-960 HL
- Materials: steel & cast steel, alloy tool steel, stainless steel, grey cast iron, spheroidal iron, cast aluminum, brass, bronze, wrought copper alloy.
- Battery type: AAA alkaline (2)
- Operating temperature: 5-104 degrees F
- Dimensions: 108 x 62 x 25mm
- Weight: 230 grams
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IMPACT DEVICES: PHASE II MODEL NO. PHT-2500
IMPACT DEVICE D
Special feature: |
Universal standard unit |
Application: |
For the majority of hardness testing assignments |
Weight: |
75g |
IMPACT DEVICE DC
Special feature: |
Extremely short impact device. Spring loaded with a special loading stick |
Application: |
Used for very confined spaces (holes, cylinders, or for internal measurements on assembled machines). |
Weight: |
50g |
IMPACT DEVICE D+15
Special feature: |
Particularly slim front section and with measuring coil moved back |
Application: |
Hardness measurements in grooves and on recessed surfaces |
Weight: |
80g |
IMPACT DEVICE DL
Special feature: |
Needle front section diameter 2.78mm length=50mm |
Application: |
Measurements in extremely confined spaces |
Weight: |
100g |
IMPACT DEVICE C
Special feature: |
Reduced impact energy (approx. 1/4 of type d) |
Application: |
Surface hardened components, coatings, thin walled or impact sensitive components (small measuring indentation) |
Weight: |
75g |
IMPACT DEVICE G
Special feature: |
Enlarged test tip. (Approx. 9 times larger than type d). Low demands on measuring surface finish. For measurements in the brinel range only (max. 650 hb) |
Application: |
Solid components such as heavy castings and forging. |
Weight: |
250g |
PORTABLE HARDNESS TESTING
Why portable hardness testing? Portable hardness testers have come of age since the late 90’s, with a vast offering of high tech, digital instrumentation. Small, compact and menu driven, these instruments have never been easier to use for unlimited types of applications.
There are two basic methods of portable hardness testing that is accepted in the field today.
“Dynamic Impact” is based on the Leeb principle of hardness,developed by Dietmar Leeb in the 1970’s. A spring loaded impact body is thrust to the test surface, effecting rebound. The speed of both the initial thrust and the rebound is measured in a non-contact mode. This is calculated as a Leeb hardness value and then automatically converted to Rockwell C, B, Brinell, Vickers and Shore Values. It has effectually brought easy, fast and accurate results to portable hardness testing. |
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“Ultrasonic Contact Impedance” is based on a 136 degree diamond at the end of a vibrating rod being depressed into the test surface at a fixed load. The difference in Ultrasonic vibration frequency is then calculated into a hardness value. The UCI test procedure is slower than the Dynamic Impact style, however the “UCI” method of hardness testing is portable, easy and accurate. It also has its own advantages when utilized for certain testing applications. UCI testers are not restricted to large mass items like dynamic type testers. These units can test metals as thin as 1mm and at a hardness value as low as 20HRC (75HB). They also excel at performing hardness tests on larger, harder metals as well. Another reason for the rise in popularity is due to the fact that the UCI method is categorized as “Non-Destructive”. That translates into less scrap parts/ lower mfg costs due to necessary inspections. |
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Technical Data for Dynamic Impact Devices
Impact Devices → |
D/DC/DL |
D+15 |
C |
G |
Impact energy |
11Nmm |
11Nmm |
3Nmm |
90Nmm |
Mass of the impact body |
5. 5g |
7. 8g |
3. 0g |
20g |
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DL: 7.3g |
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Test tip |
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* Hardness |
1600HV |
1600HV |
1600HV |
1600HV |
* Diameter |
3mm |
3mm |
3mm |
5mm |
* Material |
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Tungsten |
Tungsten |
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* |
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carbide |
carbide |
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Impact device |
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* Diameter |
20mm |
20mm |
20mm |
30mm |
* Length |
147/86mm |
162mm |
141mm |
254mm |
* Weight |
75/50g |
80g |
75g |
250g |
Max. hardness of sample |
940HV |
940HV |
1000HV |
650HB |
Preparation of surface |
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* Roughness class ISO |
N7 |
N7 |
N5 |
N9 |
* Max. roughness depth Rt |
10 µ m |
10 µ m |
2.5 µ m |
30 µ m |
* Average roughness Ra |
2 µ m |
2 µ m |
0. 4 µ m |
7 µ m |
Min. weight of sample |
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* Of compact shape |
5kg |
5kg |
1.5kg |
15kg |
* On solid support |
2kg |
2kg |
0.5kg |
5kg |
* Coupled on plate |
0. 1kg |
0. 1kg |
0. 02kg |
0. 5kg |
Min. thickness of sample |
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* Coupled |
3mm |
3mm |
1mm |
10mm |
* Min. thickness of layers |
0. 8mm |
0. 8mm |
0. 2mm |
- |
Indentation of test tip |
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With 300 HV |
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* Diameter |
0. 54mm |
0. 54mm |
0. 38mm |
1.03mm |
* Depth |
24 µ m |
24 µ m |
12 µ m |
53 µ m |
with 600 HV |
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* Diameter |
0. 45mm |
0. 45mm |
0. 32mm |
0. 90mm |
* Depth |
17 µ m |
17 µ m |
8 µ m |
41 µ mC |
with 800 HV |
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* Diameter |
0. 35mm |
0. 35mm |
0. 30mm |
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* Depth |
10 µ m |
10 µ m |
7 µ m |
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Technical Data for UCI Hardness Tester
Test Device |
U1
(UCI) |
Length |
160mm |
Diameter |
25mm |
Indentation Depth |
30µm |
Pressure Force |
14.7N |
Transducer Test Life (approx) |
200,000 |
Min. Thickness for test |
1mm |
Min. Radius for Test |
5mm |
Max Roughness of surface |
Ra 2.5µm |
Max Archive |
100 Tests |
Time of Test |
4 sec. |
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Comparison of Hardness Testing Methods-Phase II Models shown below |
Data |
Dynamic |
Ultrasonic |
Rockwell |
Requirements |
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Surface Finish |
Smooth |
Smooth |
Smooth-Semi Rough |
Rigid Support of Sample |
Yes |
Yes |
Yes |
Test sample portability |
Not required |
Not required |
Required |
Procedures |
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Structural Steel |
Functional |
Functional |
Functional |
Heat Treated Steel |
Functional |
Functional |
Functional (HRC) |
Case Hardened Material |
Functional |
Functional |
Functional (HRC) |
Non-Ferrous Metals |
Functional |
Functional |
Functional (HRB) |
Large Samples |
Yes |
Yes |
Restricted |
Small Samples |
Restricted |
Yes |
Yes (w/proper scales) |
Thin Samples |
Restricted |
Yes |
Restricted |
Curved/Round Surfaces |
Yes |
Yes |
Restricted |
Special Features |
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Automatic Test Procedure |
Yes |
Yes |
Yes |
Direct Hardness Value |
Yes |
Yes |
Yes |
Required Time for Avg/5 Tests |
Approx. 10 Sec. |
Approx. 20 Sec. |
Approx. 2 Minutes |
Digital Display |
Yes |
Yes |
Some Models |
Scale Conversions |
Yes |
Yes |
Some Models |
Directional Testing |
Yes |
Yes |
No |
Standardized by: |
ASTM |
ASTM |
NIST (HRC scale only) |
Indentation Depth |
20µm |
30µm |
160µm |
Operator Requirements |
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Skills Required |
Minimal |
Minimal |
Minimal |
Possible Reading Error |
None |
None |
None |
Instrument Features |
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Portability |
Yes |
Yes |
No |
Power Supply |
Battery |
Battery |
Manual/110v |
Output to PC |
Yes |
Yes |
Some Models |
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Type |
Model |
Model |
Dynamic Testers |
PHT-2000D |
PHT-2500D |
Ultrasonic (UCI) |
MET-U1 |
MET-UD |
Rockwell |
900-331 & 900-340 |
900-360 & 900-370 |
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