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ADL DU110 Universal Hardness Tester
The ADL DU110 is a professional universal portable hardness tester engineered for rapid, non-destructive metal testing in the field and machine shop. Operating on the dynamic Leeb rebound principle with an external Type-D impact device, it delivers instant multi-scale conversions across HRC, HRB, HRA, HB, HV, and Shore (HSD) with on-board memory and USB reporting.
Features & Benefits
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Dynamic Leeb Rebound Principle (ASTM A956 / ISO 16859): Provides fast, repeatable, non-destructive hardness testing across solid forgings, dies, molds, and heavy mechanical fabrications.
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Universal Multi-Scale Hardness Conversion: Automatically converts raw Leeb (HLD) values into standard Rockwell (HRC, HRB, HRA), Brinell (HB), Vickers (HV), and Shore (HSD) scales.
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360° Omnidirectional Testing: Intelligent internal compensation automatically corrects for impact angle whether testing downward, horizontally, or overhead.
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Broad Material Compatibility: Pre-calibrated lookup curves for carbon steel, alloy tool steel, stainless steel, gray cast iron, nodular iron, cast aluminum alloys, brass, bronze, and wrought copper.
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Large Backlit Screen with Real-Time Statistics: Displays individual impact values, run averages, test counts, Min/Max limits, and standard deviation on an illuminated LCD.
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Comprehensive Kit with Calibrated Reference Block: Includes an external Type-D impact probe, certified calibrated Leeb test block, small work support ring, and heavy-duty transport case.
Description
Designed for quality assurance inspectors, heat treatment facilities, forge shops, and structural integrity auditors, the ADL DU110 provides reliable hardness evaluations on heavy machinery, large castings, pressure vessels, and installed structural steel components. Operating according to the standardized Leeb rebound method (ASTM A956 / ISO 16859), the instrument propels a spring-loaded tungsten carbide impact body against the test surface, calculating the ratio of rebound velocity to impact velocity to produce high-precision hardness values.
Technical Specifications
| Specification Attribute | Details / Values |
| Brand / Manufacturer | ADL (Allied Diagnostic Laboratory / ADL Instruments) |
| Model / MPN | DU110 |
| Product Category | Portable Universal Dynamic Hardness Tester |
| Measurement Principle | Dynamic Leeb Rebound Method |
| Standard Impact Device | Type-D Impact Device (Tungsten carbide spherical tip, 11 Nmm impact energy) |
| Hardness Scales | Leeb (HLD), Rockwell C (HRC), Rockwell B (HRB), Rockwell A (HRA), Brinell (HB), Vickers (HV), Shore (HSD) |
| Tensile Strength Conversion | Automatically converts to Tensile Strength $\sigma_b$ ($R_m$): 375 to 2639 MPa |
| Measuring Ranges | HLD: 170–960; HRC: 17.9–69.5; HRB: 13.5–101.7; HB: 19–683; HV: 80–1042; HSD: 30.6–102.6 |
| Measurement Accuracy | $\pm 6\text{ HLD}$ (at $\approx 760\text{ HLD}$, $\pm 0.8\%$ repeatability) |
| Impact Direction | Universal 360° (Automatic angle compensation: down, angle down, horizontal, angle up, overhead) |
| Applicable Standards | ASTM A956, ISO 16859, DIN 50156, GB/T 17394 |
| Display | High-contrast dot-matrix LCD screen with adjustable LED backlight |
| Data Memory | Internal storage for up to 500 groups (including individual impact values, averages, material, and date) |
| PC Interface | USB port for data transfer to PC reporting software |
| Minimum Workpiece Requirements | Solid mass $\ge 5\text{ kg}$ unsupported (2 to 5 kg coupled with support ring; 0.05 to 2 kg clamped/coupled); Min thickness $\ge 5\text{ mm}$ |
| Power Source & Battery Life | 2× 1.5 V AA alkaline batteries; Up to 100 hours continuous operation (without backlight) |
| Operating Conditions | -10°C to +40°C (14°F to 104°F); $\le 90\%$ RH non-condensing |
| Dimensions & Weight | Main unit: 150 × 80 × 38 mm; Approx. 260 g (Main unit without probe) |
| In The Box / Standard Accessories | ADL DU110 Main Unit, Standard Type-D Impact Device, Calibrated Leeb Test Block, Small Support Ring, Cleaning Brush, USB Cable, 2× AA Batteries, Aluminum Flight Case, User Manual |
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