Piston rings in accelerating noise: hear snickering upper cylinder; sound or karahan
The pistons beat: cold machine, accelerate to hear voice,
The piston pin percussion: this sound is a sharp metal knock, when the engine when idle, hot car engine can hear in the speed, ShengXiang double knock knock the pistons,
Cylinder arrises ridge top impact noise: when the piston cylinder ridge top edges produced when the chiming of the big intervals, deceleration karahan or more ring,
Connecting rods bearing noise: wear or loose bearing in idling process after and speed than 15.6 m/s heard noise, the noise, light wear depends on the bearings to clap of heavy metals. Take away the spark plugs can reduce the noise cylinder noise, but after taking off wear bearing extremely will not affect spark.
Main bearing or thrust bearing noise: main bearing the crankshaft loose a depressing stable knock, crankshaft thrust bearing of irregular intervals loose produce heavy band, thrust bearing noise band will only in difficult to accelerate hear,
Is this noise noise: the column is the light of the rules, engine snickering idle more attention, when the valve is in the transmission by large clearance, Check and adjust SaiChe with clearance.
Abnormal combustion noise: preignition and deflagration noise is caused by abnormal combustion engine. In the combustion chamber and low octane gasoline coke may produce deflagration, exhaust recycle valve function can also cause abnormal deflagration even connecting rod percussion. Rotate remove carbon wire brush combustion.
RON detonation sound is abnormal combustion engines and other parts of noise, with an abnormal combustion way is preignition or
Shock absorber in front of engine loose caused heavy rumbling sound banging or,
The flywheel loose in the rear engine caused heavy rumbling sound or tap,
GV3504 cylinder noise stethoscope
outline: the vibration and noise detection is used to determine the rotating machinery parts fault of the most commonly used methods. Auscultate already for equipment maintenance engineers use for many years and is proven to be used in the detection of bearing and machine operation condition of changing the method is simple, convenient, in automobile engine cylinder noise diagnosis is the most widely, almost is available to each industrial fields.
The traditional auscultation method including the use of a screwdriver, listen to the bar (tongbang) etc. Now, the stethoscope has become the enterprise equipment inspection member/tally, member of the most common maintenance engineers use one of the basic testing instruments. Used to examine the automobile engine sounds and machine relative operation is normal or not, voice is mainly used to CeTing automobile engine and machine equipment parts after wearing different with abnormal sound, operate simple to use.
characteristics and apply:
Positioning from the engine to the dashboard the clash of and screaming,
Diagnosis of piston slap the sound, gear wear sound, valve failure sound, pump damage sound, gaskets of damaged sound, bearing the wear sound, etc;
structure characteristics
l Shockproof handheld institution,
l Two root probe size: long needle is 200 mm, short needle is 80 mm diameter, are 4 mm,
l The plastic box packing: packing size is 4.25 * 13.8 * 3.5 cm,
Digital noisemeter GV814
Characteristics: professional manufacture and sale of anti-retroviral therapy be (to me) brand of infrared thermometer, good plan, wind speed meter, temperature and humidity meter, illuminance meter, rangefinder, metal detectors, alternating current detector, combustible gas detector, underground metal detectors, 5-25KG hand-held electronic scale, totaling more than 10 categories and more than 30 varieties, and keep out every year at least 4 dah sing series, 10 daxin type development speed.
Description:
l measurement range 30 ~ 130dBA 35 ~ 130dBC
l measurement accuracy + 1.5 dB
l frequency response 31.5 HZ - 8.5 KHZ
l dynamic range 50dB
l AC/DC signal output
l Automatic shutdown
l low electricity display
l overload hint appropriate
l digital and resolution 5Digits & 0.1 dB
l dynamic characteristics choose Fast/Slow
l microphone 1/2 inch capacitor microphone
l frequency weighted properties A & C
l measurement gear choose appropriate
l maximum locked appropriate
l sampling frequency 2 send/SEC
l power supply 9V alkaline batteries or power adapter
l LCD size 30 * 50
l product color is white
l product net weight 178g
l product size 207 * 70 * 29mm
l packing method 1 (China) color box packaging
l standard outside the box capacity of 20
l standard outside the box sizes institute 45.0 * * 26.5 cm
l standard outside the box gross 13.96 kg
Portable car endoscope GV98A
This product is also called USB snake tube type industrial endoscope
Features:
l Len Dia.: 14mm
l Flexible Tube Dia.: 8.5mm
l Flexible Tube Length.: 600mm
l USB Cable: 2000mm
l Waterproof at flexible tube and len.(IP67)
l Pixels: 1/6'VGA CMOS 640*480 pixels
l View Angel: 54°
l Focal Distance: 6CM-infinate
l Two White LED ligh
l Instal software in the computer before operating.
l Deploy Magnetic and Hook
GV410 car special electronic stethoscope
summary:
Auto special electronic stethoscope is a kind of examination vehicle failure of the basic and the most necessary of portable electronic devices. Can be detected when the machine is running bearings, gears, trap, valve, crankshaft, cylinder, gearbox, body... Such defects and faults in the operation of the site the shock of vibration. Even in terrible noise environment, also can make maintenance workers clearly distinguish machine murmurs parts and severity.
suitable scope
Electronic stethoscope can be used in metallurgy, petroleum, chemical industry, light and textile industry, electric power, mining, motor, ship, automobile, airplane, machine tools and various engineering machinery, heavy machinery and so on all rotary and reciprocating machinery field. Especially a few large equipment, key complicated equipment, long-term continuous operation of the mechanical equipment need more electronic stethoscope.
Features:
1. The volume knob can control the volume,
2. With ear protection function earphones can eliminate background noise,
3. Equipped with two probe, length is 60 and 29 mm respectively,
4. Black ABS molding, firm structure.
specifications
Sound volume control account, amplified
Combined with Headset, ear to defenders
How are moments don
Probe tip, 2, and 290mm lengths 60
Strong boby, black probe, ABS molding
9 volt, alkaline few for talking to 30
Continuous all
A few case, ground and included
accessories
The instruction for use
