UE Systems ULTRAPROBE 2000 Скачать руководство пользователя

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Version 1

ixed

Band

20 k

30 k

40 k

50 k

80 k

100

kHz

Suggested*

Meter mode *

Module Selection

Steam Traps

LOG

Stethoscope

Valves

LOG

Stethoscope

Compressor
(valves)

LOG

Stethoscope

Bearings

LIN

Stethoscope

Pressure/
vacuum leaks

LOG

Scanner

Electrical (Arcs,
Tracking, Corona)

LOG

Scanner

Gear Boxes

LOG/LIN

Stethoscope

Pumps

(Cavitation)

LOG

Stethoscope

Piping Systems
(Underground)

LOG

Stethoscope

Condenser
Tubes

LOG

Scanner

Heat Exchangers
(Tone Method)

LOG

Scanner

Содержание ULTRAPROBE 2000

Страница 1: ...Version 1 1 ULTRAPROBE 2000 Instruction Manual ...

Страница 2: ...nt with your hands or fingers Be sure to use appropriate lockout procedures when attempting repairs Be careful with loose hanging parts such as the wrist strap or headphone cord when inspecting near moving mechanical devices since they may get caught Don t touch moving parts with the contact probe This may not only damage the part but cause personal injury as well When inspecting electrical equipm...

Страница 3: ...ension Kit 9 Headset 10 WTG 1 Warble Tone Generator Standard 10 To use the WARBLE TONE GENERATOR 10 To charge the Warble Tone Generator 10 WTG 2SP Warble Pipetone Generator 11 Ultraprobe Applications 12 Leak Detection 12 How to locate leaks 13 To Confirm a Leak 13 Overcoming Difficulties 13 Shielding Techniques 14 Low Level Leaks 15 Electric Arc Corona Tracking Detection 16 Monitoring Bearing Wear...

Страница 4: ...eam Confirmation 23 Inverted Bucket Traps 23 A Float and Thermostatic 23 Thermodynamic Disc 23 Thermostatic Traps 23 Locating Faulty Valves 24 Confirming Valve Leakage in Noisy Pipe Systems 25 Miscellaneous Problem Areas 25 Underground Leaks 25 Leakage Behind Walls 26 Blockage in Pipes 26 Procedure 26 Partial Blockage 26 Procedure 26 Flow Direction 26 Ultrasound Technology 27 ATTENUATOR TRANSFER C...

Страница 5: ...Version 1 5 Ultraprobe 2000 Kit ...

Страница 6: ... 10 The inside digits are for fine tuning and these smaller gradations are shown as lines which represent 2 divisions each As the numbers go UP in value the sensitivity of the instrument also goes up The maximum sensitivity level is 10 the minimum sensitivity level is 0 0 On the sensitivity selection switch is a LOCK lever This allows a user to lock the sensitivity selection and thereby prevent it...

Страница 7: ...d averages there sponse for a more measurable result This selection is utilized for monitoring bearings or for mechanical analysis when too rapid a meter response might be confusing to the operator In this scale the meter indicator may be used to provide a dB decibel relationship for applications such as mechanical monitoring and bearing trending 3 Aux this is the auxiliary position which is to be...

Страница 8: ...tion on the meter selection dial 3 For general use position the frequency selection dial to the fixed band mode 4 Start with the sensitivity selection dial at maximum 10 5 Start to scan the test area a The method of air borne detection is to go from the gross to the fine If there is too much ultrasound in the area reduce the sensitivity place the rubber focusing probe described below over the scan...

Страница 9: ...ing a problem sound refer to section on Mechanical Analysis 4 Touch test area 5 As with the scanning module go from the gross to the fine Start a maximum sensitivity on the Sensitivity Selection dial and proceed to reduce the sensitivity until a satisfactory sound and meter level is achieved Stethoscope Module At times it may be necessary to utilize the stethoscope probe with the sensitivity level...

Страница 10: ...s tanks where the warble ultrasound penetrates As an example if the item to be tested is the seal around a window place the Warble Tone Generator on one side of the window close it and proceed to scan on the opposite side To test the condition of the Warble Tone Generator battery set to the LOW INTENSITY position and listen to the sound through the Ultraprobe in the FIXED BAND mode A smooth contin...

Страница 11: ...crease intensity output There is a lock lever located to the right on the variable intensity control dial Should a specific output intensity be required the level may be preset and locked into position so that it will not be inadvertently moved during a test To lock press the lock lever down to unlock push the lock lever up d On Off Switch middle To turn the unit on push the switch to the left e R...

Страница 12: ... same flow rate The reason for this is that the turbulence produced by a vacuum leak is occurring within the vacuum chamber while the turbulence of a pressure leak is generated in the atmosphere Fig 2 What type of gas leak will be detected ultrasonically Generally any gas including air will produce a turbulence when it escapes through a restricted orifice Unlike gas specific sensors the Ultraprobe...

Страница 13: ...ightly back and forth in all directions If the leak is at this location the sound will increase and decrease in intensity as you sweep over it In some instances it is useful to position the rubber focusing probe directly over the suspect leak site and push down to seal it from surrounding sounds If it is the leak the rushing sound will continue If it is not the leak site the sound will drop off Ov...

Страница 14: ...as the gloved hand method only in addition to the glove use a wipe rag to wrap around the rubber focusing probe tip Hold the rag in the gloved hand so that it acts as a curtain i e there is enough material to cover the test site without blocking the open end of the rubber focusing probe This is usually the most effective method since it uses three barriers the rubber focusing probe the gloved hand...

Страница 15: ...s will pass When it comes in contact with a low flow of gas it quickly forms a large number of small soda like bubbles that burst as soon as they form This bursting effect produces an ultrasonic shock wave that is heard as a crackling sound in the headphones In many instances the bubbles will not be seen but they will be heard This method is capable of obtaining successful leak checks in systems w...

Страница 16: ...ures When in doubt ask your supervisor Never touch live electrical apparatus with the Ultraprobe The method for detecting electric arc and corona leakage is similar to the procedure outlined in leak detection Instead of listening for a rushing sound a user will listen for a crackling or buzzing sound In some instances as in trying to locate the source of radio TV interference or in substations the...

Страница 17: ...ction capability whereas conventional methods are incapable of detecting very slight faults As a ball passes over a pit or fault in the race surface it produces an impact A structural resonance of one of the bearing components vibrates or rings by this repetitive impact The sound produced is observed as an increase in amplitude in the monitored ultrasonic frequencies of the bearing Brinelling of b...

Страница 18: ...o page 17 for discussion of audio interpretation 6 Select same type bearings under similar load conditions and same rotational speed 7 Compare differences of meter reading and sound quality Procedure for Bearing History Historical There are two methods to historically trend a bearing The first is a very common field proven method called the SIMPLE method The other provides greater flexibility in t...

Страница 19: ...g 7 Subtract the original decibel reading from the current reading and you will have the decibel change from the baseline reading to the present reading 8 If this level exceeds 8 dB it may indicate a lack of lubrication if the reading exceeds 12 dB it may indicate the onset of the failure mode When using the ATTENUATOR TRANSFER CURVE method there are three warning levels that have been established...

Страница 20: ...s of lubricant often breaks bearing seals or causes a build up of heat which can create stress and deformity To avoid over lubrication 1 Don t lubricate if the base line reading and base line sound quality is maintained 2 When lubricating use just enough lubricant to bring the ultrasonic reading to baseline 3 As mentioned in 3 above use caution Some lubricants will need time to uniformly cover the...

Страница 21: ...ined in LEAK LOCATION i e follow the sound to its loudest point Monitoring Operating Equipment In order to understand and keep ahead of potential problems in operating equipment it is necessary to establish base data and observe shifts in that data The data can be compiled from meter readings chart recordings and even tape recordings for chart recording it will be necessary to have your Ultraprobe...

Страница 22: ...ostatic and usually thermostatic traps While testing intermittent traps listen long enough to gauge the true cycle In some cases this may be longer than 30 seconds Bear in mind that the greater the load that comes to it the longer period of time it will stay open In checking a trap ultrasonically a continuous rushing sound will often be the key indicator of live steam passing through There are sub...

Страница 23: ...amic Disc Thermodynamic traps work on the difference in dynamic response to velocity change in the flow of compressible and incompressible fluids As steam enters static pressure above the disc forces the disc against the valve seat The static pressure over a large area overcomes the high inlet pressure of the steam As the steam starts to condense the pressure against the disc lessens and the trap ...

Страница 24: ...25 kHz and listen A properly seated valve will generate no sound In some high pressure situations the ultrasound generated within the system will be so intense that surface waves will travel from other valves or parts of the system and make it difficult to diagnose valve leakage In this case it is still possible to diagnose valve blow through by comparing sonic intensity differences by reducing th...

Страница 25: ...trasound In addition loose soil will absorb more ultrasound than firm soil If the leak is close to the surface and is gross in nature it will be quickly detected The more subtle leaks can also be detected but with some additional effort In some instances it will be necessary to build up pressure in the line to generate greater flow and more ultrasound In other cases it will be necessary to drain t...

Страница 26: ...ed at various intervals The ultrasound generated within the piping will be greatest at the site of the partial blockage Procedure 1 Use procedures 1 3 as outlined in VALVE TESTING 2 Listen for an increase in ultrasound created by the turbulence of partial blockage Flow Direction Flow in piping increases in intensity as it passes through a restriction or a bend in the piping As flow travels upstrea...

Страница 27: ...e nature of ultrasound amplification is a very important feature Although there are obvious audible sounds emitted by most operating equipment it is the ultrasonic elements of the acoustic emissions that are generally the most important For preventative maintenance many times an individual will listen to a bearing through some simple type of audio pick up to determine bearing wear Since that indiv...

Страница 28: ...Version 1 28 ATTENUATOR TRANSFER CURVE SAMPLE ONLY DO NOT USE WITH YOUR INSTRUMENT ...

Страница 29: ...__________ ________________________________ Diagram of Equipment if needed Location ________________________________ ________________________________ ________________________________ Test Point I D E G Bearing Number Insulator Tag Trap Tag Etc Module Used contact Scanning Accessory Used Frequency Setting Sensitivity Setting Baseline dB Gain Date Meter L in Mode Action To Take Action Taken By Work ...

Страница 30: ...G Stethoscope Compressor valves X X X X LOG Stethoscope Bearings X X LIN Stethoscope Pressure vacuum leaks X X LOG Scanner Electrical Arcs Tracking Corona X X LOG Scanner Gear Boxes X X LOG LIN Stethoscope Pumps Cavitation X X X LOG Stethoscope Piping Systems Underground X X X LOG Stethoscope Condenser Tubes X X LOG Scanner Heat Exchangers Tone Method X LOG Scanner ...

Страница 31: ...will see a change lever Move this change lever to the middle of the lock so that it hooks behind the change notch picture 1 2 Now set your personal combination by turning the dials to the desired combination i e birthday phone no etc 3 Move the change lever back to the normal position picture 2 4 To lock rotate one or more dials To open the lock set your personal combination International patents ...

Страница 32: ... warble tone transmission Headset Noise isolating type Double headset wired monophonic Impedance 16 ohms Over 23 dB of noise attenuation Meets or exceeds ANSI specifications and OSHA standards For hard hat use Indicators Ballistic ouput meter linear calibration scale of 0 100 for logging relative measurements Meter is accurate 1 throughout entire scale Low level Battery LED indicator for main hous...

Страница 33: ...ed further support Want information regarding products or training Contact UE Systems Europe Windmolen 20 7609 NN Almelo NL e info uesystems eu w www uesystems eu t 31 0 546 725 125 f 31 0 546 725 126 www uesystems eu ...

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