Mechanic’s Stethoscope MS-120
Widely used in ship, automobile, chemical manufacture, metallurgy, machine, household appliance and many other fields.
Features
* It can pick up and amplify the weak audio signals via a sensitive piezoelectric sensor, and distinguish the normal/abnormal signal and its location.
* Desined to help locate the source of excess bearing and machine noise easily at low cost.
* Used to quickly locate the source of engine noise such as piston slap, worn gears and bearings, blown gaskets. Also useful tracking down dashboard rattles and squeaks.
Specifications
| Frequency Range | 10Hz~10K Hz |
| Input Impedance | >20M |
| Ambient Noise Permitted | 100dB |
| Power Supply | 4×1.5V AAA Size(UM-4)Battery |
| Dimensions | 156mmx67mmx28 mm |
| Weight | 270g(Not Including Batteries) |
| Standard Accessories | Main Unit |
| Powerful Rare Earth Magnet | |
| Sensor | |
| Probe(Cone) | |
| Carrying Case | |
| Manual Book | |
| Optional Accessories | Headset |
Vibration Standard
| ISO/IS2373 Motor Quality Standard According As Vibration Velocity | ||||
| Quality Rank | Rev ( rpm ) | H: high of shaft ( mm )
Maximum vibration rms ( mm/s ) |
||
| 80<H<132 | 132<H<225 | 225<H<400 | ||
| Normal | 600~3600 | 1.8 | 2.8 | 4.5 |
| Good ( R ) | 600~1800 | 0.71 | 1.12 | 1.8 |
| 1800~3600 | 1.12 | 1.8 | 2.8 | |
| Excellent ( S ) | 600~1800 | 0.45 | 0.71 | 1.12 |
| 1800~3600 | 0.71 | 1.12 | 1.8 | |
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