MS-120 Mechanic's Stethoscope Used Quickly Locate Source of Engine Noise MS120

Model:	MS-120
Brand:	GRAIGAR
Origin:	Made In China
Category:	Electronics & Electricity / Electronic Instrument / Analysis Instrument
Label:	Stethoscope , Engine Noise , MS-120
Price:	US $120 / pc
Min. Order:	1 pc

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Product Description

New Mechanic's Stethoscope MS-120 Pick up and Amplify the Weak Audio Signals via Sensitive Piezoelectric Sensor

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	10~10K Hz
Input Impedance	>20M
Ambient Noise Permitted	100dB
Power Supply	4x1.5V AAA Size(UM-4)Battery
Dimensions	156x67x28 mm
Weight	270g(Not Including Batteries)
Standard Accessories	Main Unit
	Powerful Rare Earth Magnet
	Sensor
	Probe(Cone)
	Carrying Case
	Manual Book
Optional Accessories	Headset

Vbration Standard

ISO/IS2373 Motor Quality Standard According As Vibration Velocity
Quality Rank	Rev ( rpm )	H: high of shaft ( mm ) Maximum vibration rms ( mm/s )
Quality Rank	Rev ( rpm )	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
Good ( R )	1800~3600	1.12	1.8	2.8
Excellent ( S )	600~1800	0.45	0.71	1.12
Excellent ( S )	1800~3600	0.71	1.12	1.8