Sauter HMM Hardness Tester
94400
Sauter HMM Hardness Tester
94400
Mobile Leeb Hardness Testers with External Sensors
The Sauter HMM and HMM-NP are advanced, portable Leeb hardness testers designed for reliable metal hardness testing in demanding industrial environments. Equipped with an external Type D impact sensor, they provide precise, multi-unit hardness readings with high flexibility and ease of use. The HMM version includes a portable infrared printer, while the HMM-NP is supplied without a printer.
Key Features
- External Impact Sensor: Type D rebound sensor included, enabling high accuracy and mobility.
- Multi-Scale Conversion: Automatic conversion to HL, HB, HV, HSD, HRB/HRC, and tensile strength (MPa).
- All-Angle Measurement: 360° operation with automatic compensation for impact direction.
- Data Storage: Internal memory holds up to 9 readings with mini statistics (avg, direction, time/date).
- Compact & Rugged: Durable housing and included carry case for field and workshop use.
Model Comparison
| Model | Sensor Type | Hardness Range (HL) | Resolution | Printer |
|---|---|---|---|---|
| HMM | Type D (External) | 170 – 960 HL | 1 HL | Infrared Printer Included |
| HMM-NP | Type D (External) | 170 – 960 HL | 1 HL | Not Included |
Technical Highlights
- Accuracy: ±1% at 800 HLD (±6 HLD)
- Tensile Strength Range: 375 – 2639 MPa (Steel)
- Min Sample Weight: 2 kg (with fixed coupling)
- Min Sample Thickness: 3 mm
- Min Sample Radius: 50 mm (10 mm with support ring)
- Battery Life: Up to 30 hours (3 × AAA batteries)
- Display Unit: 150 × 80 × 30 mm
Included Accessories
- External impact sensor Type D
- Hardness test block (790 ± 40 HL)
- Robust carry case
- Infrared printer (HMM only)
Optional Accessories
- Additional impact body Type D (AHMO D01)
- Support rings for curved surfaces (AHMR 01)
- Test blocks (AHMO D02, D03, D04)
- Factory calibration certificate