manualshive.com logo in svg

UE Systems Ultraprobe 100, Instruction Manual

Share
Download
UE Systems Ultraprobe 100 Instruction Manual Download Page 11

Version 1 

 

11 

 

 

How to locate leaks 

 

1.  Use the SCANNING MODULE.  
2.  Start off with the sensitivity selection at 0 (Maximum).  

 

3.  Begin to scan by pointing the module towards the test area. The procedure is to go from the 

"gross" to the "fine" - more and more subtle adjustments will be made as the leak is 
approached.  

 

4.  If there is too much ultrasound in the area, reduce the sensitivity setting and continue to 

scan.  

 

5.  If it is difficult to isolate the leak due to competing ultrasound, place the RUBBER FOCUSING 

PROBE over the scanning module and proceed to scan the test area.  

 

6.  Listen for a "rushing" sound while observing the meter.  

 

7.  Follow the sound to the loudest point. The meter will show a higher reading as the leak is 

approached.  

 

8.  In order to focus in on the leak, keep reducing the sensitivity setting and move the instrument 

closer to the suspected leak site until you are able to confirm a leak.  

 

 

 

 

 

 

 

 

 
 
 
 
 
 

To confirm a leak: 

Position the Scanning Module, or the rubber focusing probe (if it is on the scanning module) close to 
the suspect leak site and move it, slightly, 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, i t 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.

 

 

 

Overcoming difficulties 

Competing Ultrasounds  
 
If competing ultrasounds make it difficult to isolate a leak, there are two approaches to be taken: 
 

a)  Manipulate the environment. This procedure is fairly straight forward. When possible, turn off 

the equipment that is producing the competing ultrasound or isolate the area by closing a door 
or window.  

 

b)  Manipulate the instrument and use shielding techniques. If environmental manipulation is not 

possible, try to get as close to the test site as possible, and manipulate the instrument so that 
it is pointing away from the competing ultrasound. Isolate the leak area by reducing the 
sensitivity of the unit and by pushing the tip of the rubber focusing probe up to the test area, 
checking a small section at a time.  

 

Summary of Contents for Ultraprobe 100

Page 1: ...Version 1 1 ULTRAPROBE 100 Instruction Manual ...

Page 2: ...ching the equipment 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 touchmoving parts with the contact probe This may not only damage the part but cause personal injury as well When inspecting e...

Page 3: ...harge the Warble Tone Generator 9 Ultraprobe applications 10 leak detection 10 How to locate leaks 11 To confirm a leak 11 Overcoming difficulties 11 Shielding techniques 12 Low level leaks 12 Tone test Ultratone 13 Do not use the Tone test in a complete vacuum 14 Electric arc corona tracking detection 15 Detecting bearing wear 16 Detecting bearing failure 17 For comparative test 17 Slow speed bea...

Page 4: ...ps 19 Float and thermostatic 19 Thermodynamic 19 Thermostatic traps 20 Locating faulty valves 20 Procedure for valve check 21 Confirming valve leakage in noisy pipe systems 21 Ultrasound technology 22 Ultraprobe 100 Specifications 23 ...

Page 5: ...Ultraprobe 100 provides easy accurate leak detection and mechanical inspection through advanced ultrasonic technology Before you begin testing it isadvisable to familiarize yourselfwith the basic components of your kit ...

Page 6: ...0 the sensitivity decreases A low level ultrasound emission produces low amplitude For this reason the instrument should be in a high sensitivity position 0 is the high sensitivity position 0 is a dB indication of threshold detection for the instrument For higher amplitude signals move the sensitivity to the left towards 70 The dial dB indications along withthe LED indications in the bar graph may...

Page 7: ...ltrasound in the area reduce the sensitivity place the RUBBER FOCUSING PROBE described below over the scanning module and proceed to follow the test sound to its loudest point If it is difficult to locate the sound due to a high intensity signal keep reducing thesensitivity and following themeter to the loudest point Rubber focusing probe The Rubber Focusing Probe is a circularshaped rubber shield...

Page 8: ...ded to use UE Systems model UE DHC 2HH Hard Hat Headphones which are specifically designed for hard hat use For those situations in which it is not possible or difficult to wear the standard headphones described above UE Systems has two options available 1 the DHC 1991 Earpiece which loops around the ear and 2 the SA 2000 Speaker Amplifier which is a loud speaker that is compatible with the Ultrap...

Page 9: ...he item to be tested is the seal around a window place theWarble Tone Generator on one side of the window close it and proceed toscan 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 headphones A smooth continuous warbling sound should be heard If a beeping is heard instead then a full r...

Page 10: ...e 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 Ultraprob...

Page 11: ...loseto the suspect leak site andmove it slightly back and forth in all directions If the leak is at this location the sound will increase and decrease in intensity as yousweep 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...

Page 12: ...rrier is draped from ceiling to floor at other times it is hung over railings Low level leaks In ultrasonic inspection of leakage the amplitude of the sound often depends upon the amount of turbulence generated at the leak site The greater the turbulence the louder the signal the less the turbulence the lower the intensity of the signal When a leak rate is so low that it produces little if any tur...

Page 13: ...g in the direction of the area to be tested and close or seal so that the Tone Generator is enclosed within NOTE The size of the test area will determine the amplitude selection of the Tone Generator If the item to be tested is small select the LOW position For larger items use the HIGH position 3 Scan the test area with the Ultraprobe as outlined in LEAK DETECTION procedure i e start with the sen...

Page 14: ...ron beam microscope The test chamber has been fitted with a specially designed transducer to emit the desired tone and a partial vacuum is created A user then scans all seams for sonic penetration The Tone Test has also been effectively utilized to test tanks before they are put on line piping refrigerator gaskets caulking around doors and windows for air infiltration testing heat exchangers for l...

Page 15: ...as arcing tracking andcorona without taking the switchgear off line to perform an infrared scan However it is recommended that both tests be used with enclosed switchgear NOTE When testing electrical equipment follow all your plant or company safety procedures When in doubt ask your supervisor Never touch live electrical apparatus with the Ultraprobe The method for detecting electric arc and coron...

Page 16: ...and vibrationchanges An ultrasonic system based on detection and analysis of modulations of bearing resonance frequencies can provide subtle detection capability whereas conventional methods are incapable of detecting very slight faults As a ball passes over a pit or fault in the racesurface it produces an impact A structural resonance of one of the bearing components vibrates or rings by this rep...

Page 17: ...s over lubrication Normal bearing loads causes an elastic deformation of the elements in thecontact area which give a smooth elliptical stress distribution But bearingsurfaces are not perfectly smooth For this reason the actual stress distribution in the contact area will be affected by a random surface roughness In the presence of a lubricant film on a bearing surface there is a dampening effect ...

Page 18: ... of steam traps is a positive test The main advantage to ultrasonic testing is that it isolates the area being tested by eliminating confusing background noises A usercan quickly adjust to recognizing differences among various steam traps of which there are three basic types mechanical thermostatic and thermodynamic When testing steam traps ultrasonically 1 Determine what type of trap is on the li...

Page 19: ...complete blow through not a partial loss The trap will no longer operate intermittently Aside from a continuous rushing sound another clue for steam blow through is the sound of the bucket clanging against theside of the trap bucket trap drawing Float and thermostatic A FLOAT AND THERMOSTATIC trap normally fails in the closed position A pinhole leak produced in the ball float will cause the float ...

Page 20: ...rbulence generated except at bends or obstacles In the case of a leaking valve the escaping liquid or gas will move from a high to a low pressure area creating turbulence on the low pressure or downstream side This produces a white noise The ultrasonic component of this white noise is muchstronger than the audible component If a valve is leaking internally the ultrasonic emissions generated at the...

Page 21: ...gh pressure systems stray signals occur from valves that are close by or from pipes or conduits feeding into a common pipe that is near the downstream side of a valve This flow may produce false leak signals In order to determine if the loudsignal on the downstream side is coming from a valve leak or from some other source 1 Move close to the suspected source i e the conduit or the other valve 2 T...

Page 22: ...e nature of ultrasound amplification is a very important feature Although there are obvious audiblesounds 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 somesimple type of audio pick up to determine bearing wear Since that individ...

Page 23: ...e 150Ω Molded Connector Probes Scanning Module SCM 1 Stainless Steel Unisonic single transducer piezo electric crystal type Stethoscope Contact Module STM 1 Stainless Steel plug in type with 14cm 5 5 Stainless Steel Waveguide Rubber Focusing Probe Shields stray ultrasonic signals and focuses detected signals Transmitter Patented warble tone transmission Respons time Response time 300 msec Ambient ...

Page 24: ...ed further support Want information regarding products or training Contact UE Systems Europe Windmolen 22 7609 NN Almelo NL e info uesystems eu w www uesystems eu t 31 0 548 659 011 f 31 0 548 659 010 www uesystems eu ...

Reviews:

No comments

Brands by name

Popular brands

Load more brands