Product Details:
| Minimum Order Quantity | 1 Set |
| Parameter | HB |
| Display Type | Analog |
| Model Name/Number | Telebrineller |
| Accuracy | +-2 % to +-5 % |
| Brand | Telebrineller |
| Automation Grade | Manual |
| Weight | 0.550 Kg |
| Hardness Scale | BHN |
Description: The Telebrineller Brinell Hardness Testing System stands out as the best QA solution for ensuring top-notch quality. Developed specifically for welding crews, Telebrineller draws on over fifty years of field experience and solid metallurgical knowledge.
Portable and practical, the entire Telebrineller system, housed in a case, weighs less than ten pounds. It's an ideal choice for Brinell hardness testing in any situation.
Operating the system is straightforward – a single hammer blow, measuring the resulting impressions, and manipulating a basic equation on the included computer. No specialized training required; anyone can quickly and accurately determine BHN in minutes.
Certified for accuracy, the core of the system relies on test bars calibrated within +/- 2% of the labeled BHN. These bars undergo hardness measurement using equipment which complies with the National Standards Institute, allowing for precise readings within .05 millimeters.
Built for field use, the Telebrineller Brinell Hardness Testing System is built with weatherproof design in mind. Rugged, solid components, ensure accurate measurements in all weather conditions and under rough field circumstances.
Telebrineller Brinell Hardness Testing System Principle of Operation
1. Select a test bar with a known Brinell Hardness Number (BHN), closely mirroring the expected hardness of the specimen under examination.
2. Consistent accuracy is maintained when the test bar BHN is within + or -15% of the specimen BHN and is of the same general material. (For non-ferrous materials tested with carbon steel bars, correct for impact errors by applying designated correction factors to the test results.)
3. Insert the chosen test bar into the Telebrineller instrument and position the instrument accurately on the specimen.
The Telebrineller instrument comes complete with essential components: a test bar (1), an anvil (2) encased in a soft molded rubber head (3), which securely rests on the test bar. Both the rubber head and a corresponding resting block (4) ensure a non-skid footing. Positioned below the test bar, a steel impression ball (5), securely embedded in the base of the rubber head, makes contact with both the test bar and the specimen.
Executing the test involves a sharp strike to the anvil using a two to five-pound hammer. The impact, irrespective of force, is uniformly transmitted to both the test bar and the specimen through the impression ball (6), resulting in impressions in both materials. The diameters of these impressions directly correlate with the respective hardness of the test bar and the specimen.
To facilitate each test, a spacing bar (7), operated by a spring catch and button, adjusts the test bar to a clear area, ensuring precision and efficiency in the testing process.
Telebrineller Brinell Hardness Testing System Accuracy
Our Standard Telebrineller Test Bars guarantee uniform hardness within a tight margin of plus or minus 2% of the Brinell Hardness Number (BHN) etched on the bar's end. Crafted from assorted alloys of carbon steel and precision ground to a 9/16” square finish, these bars ensure reliability and consistency.
To determine BHN, the diameters of the resulting impressions are meticulously measured and converted using the King-Scan, a computerized calibration system. The system's accuracy complies with the National Institute of Standards, and the obtained BHN values are rounded to the nearest standard BHN at a .05mm interval, as per Table I of ASTM Standard E10. The finalized BHN is then etched on the end of the bar for clear identification.
