The QH7 metal hardness tester covers the widest range of applications by combining Leeb and UCI methods of hardness testing. Measure small parts with UCI and get faster and accurate measures in Leeb with our GyroTag technology that automatically corrects the impact angle.
A robust design in a high resistance aluminum enclosure with a large display and the ability to support all impact device types and UCI probes makes the QH7 Series the most complete and advanced option in the dmq QH Family of portable metal hardness testers.
- Complies with ASTM A-956 & ASTM E-140 standards
- Measure in any direction with auto angle detection
- CalTag technology on impact devices and probes
- Graphical representations and statistics
- Rechargeable batteries
- Aluminum enclose with rubber sides
- Programmable quick access key
- Send data via Bluetooth
- Color backlight alphanumeric LCD display
| Method | Leeb | UCI |
|---|---|---|
| Models | QH7L, QH7C | QH7U, QH7C |
| Heavy solid parts | ++ | + |
| Founded or forged | ++ | O |
| Steel as well as aluminum alloys | ++ | O |
| Weld Heat Affected Zones | O | ++ |
| Tubes and pipes | O | ++ |
| Bars | + | ++ |
| Metal plates and sheet metal coils | + | ++ |
| Non-homogenous surfaces | ++ | O |
| Thin parts | + | ++ |
++ ideal + depends on actual part O not recommended |
||
DataCenter is software used to transfer and process data stored in the unit memory. With the tools in
DataCenter you can generate statistics, graphics, export data to other programs and prepare custom reports.
With the QH7 measurements can be transferred using a USB cable and or by Bluetooth.
| Leeb (Energy absorbed on impact) | |
|---|---|
| Materials | Steel and cast steel, alloy tool steel, stainless steel, grey cast iron, spheroid iron, cast aluminum, brass, copper, bronze and user defined materials |
| Resolution | 1 HL - 1 HB - 1HV - 0.1HRC - 0.1 HRB - 0.1 HRB - 0.1 HS - 1 N/mm2 (Mechanical Resistance) |
| Accuracy | ± 4 HL (0.5% at 800 HL) |
| Measuring Range | HL 150 - 960 |
| UCI (Ultrasonic contact impedance) | |
| Materials | Steel, other metals with calibration blocks |
| UCI Probe Types | 10N UCI Probe Ideal to measure superficial hardness, polished surfaces and small parts with a good finish. Maximum roughness is Ra 5µm 50N UCI Probe Measure induction or cemented treated parts such as crankshafts, gears, welds and heat affected zones. Maximum roughness is Ra 10µm 98N UCI Probe Recommended for use in founded parts, weld seams and heat affected zones even in unmachined surfaces. Maximum roughness is Ra 15µm. |
| Resolution | 1HV - 0,1HRC - 0,1HRB - 1HB - 0,1HS -1N/mm2 (Mechanical Resistance) |
| Accuracy | A maximum 5% tolerance in HV |
| Measuring Range | HV 230 - 940 |
The QH7 comes complete with impact device, UCI probe, or both ( QH7 C model ); test block, printed user manual, certificate of conformity, CD with software DataCenter FULL, USB cable, SE520 high impact carrying case and rubber protections for both sides of the enclosure.
| Item | Description | Price | ||
|---|---|---|---|---|
QH7L | Leeb Heavy Duty Portable Metal Hardness Tester with Type D impact Device | $2,202.20 | ||
| Accessories | ||||
QHS101 | Type D (universal) impact device with cable and connector | $391.60 | ||
QHS201 | Impact device DC for Legacy QH5 (review SN) | $518.10 | ||
QHS301 | Impact device DL | $954.80 | ||
QHS501 | Impact device C | $518.10 | ||
QHS601 | Impact device G | $954.80 | ||
QHS701 | Impact device E | $954.80 | ||
QHC001 | Impact device replacement cable with connector | $137.50 | ||
| UCI Probes | ||||
QHS110 | 10N UCI with cable and connector | $1,552.10 | ||
QHS150 | 50N UCI with cable and connector | $1,552.10 | ||
QHS198 | 98N UCI with cable and connector | $1,552.10 | ||
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