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Reliability Direct, Inc.

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June 2001  Vol. 2, Issue # 6

Vibration, Balancing, Alignment, Ultrasound, Oil Analysis & more...

 WHAT'S HOT!

CMVP40 Vibration Pen Plus measures vibration according to ISO standards and utilizes acceleration enveloping technology to identify a range of bearing, gear mesh and other machinery problems.

The PLT-5000 Pocket Laser Tachometer comes as a complete kit with all the accessories needed for accurate contact or laser sharp non-contact measuring. 

The CMCP420VT is a solid state, loop powered vibration transmitter. It provides a 4-20 mA output that is proportional to overall vibration in terms of velocity. The CMCP420VT continuously monitors machinery health and transmits directly into a PLC or DCS for trending, alarm and machine shutdown.

The CMCP1100 Industrial Accelerometer is an excellent choice for permanent installations. It offers a broad frequency response, high accuracy, a small installation footprint and an integral cable. All for only $89.00! (5 meter cable).

Reliability Direct in association with Amazon.com provides a comprehensive offering of technical references for Plant Reliability and Condition Monitoring.

The book explains fundamental machinery behavior, Static and Dynamic measurement, data acquisition, processing and interpretation. Detailed case histories are provided.

1-800-899-2241

NEW PRODUCTS
EXERGEN DX Series Hand Held Infrared Thermometers
The DX Series Infrared Thermometer is an entirely different type of instrument from  conventional  temperature measuring devices. It is the only infrared instrument that can be certified with NIST traceable accuracy on real surfaces of unknown emissivity, while remaining completely free of the contact errors and heat sinking errors of contact devices.

SKF Marlin Condition Detector (MCD) The SKF MARLIN™ condition detector (MCD)  provides a simple, effective means of checking the health of a machine, measuring vibration and temperature to assess its operating state. By putting MCD into the hand of plant or maintenance personnel, the frequency of checking can be increased, warnings can be received earlier and plant condition experts can be freed to focus only on specific problem areas.

OilCheck TMEH 1 The hand-held TMEH 1 provides accurate feedback on oil condition in just two minutes. It detects mechanical wear and any loss of lubricating properties in the oil with a repeat accuracy less than 5%. 

HIAC PC4000 Portable Liquid Particle Counter is a smart and exceptionally easy to use instrument for the measurement, storage and reporting of critical oil condition parameters in hydraulic systems. With a supplied carrying case and shoulder strap, the PC4000 is ideal for multi-point proactive maintenance, roll-off testing, and service truck usage. 

ASK THE EXPERT
Can you take Acceleration Envelope Measurements with a hand-held sensor? 
Enveloping measurements with a hand-held sensor must be consistantly applied to achieve consistent readings. A stable point measurement requires a constant pressure of the sensor against the machine, the same angle of attack, a clean measurement area and be taken at the same place every time.

Will Hand-Held Acceleration Enveloping measurements differ from that of a fixed sensor? 
Yes. Because the efficiency of the coupling interface for hand-held and fixed sensors differ, their amplitude readings may differ by a factor of 2 or 3. However, absolute amplitudes are not as significant as changes in amplitude measured over time by the same sensor (trend). Readings are very much dependent on the transmission path. If care is taken as to pressure, direction and coupling efficiency, then statistical trending is a viable method without regard to absolute levels.

Ultrasonic Leak Detection How does it work? 
You are probably aware of familiar with the hissing sound a large leak makes. Smaller leaks also emit sound, however, the frequency is higher than we can normally hear. By a process called heterodyning, the ultrasonic detector translates the ultrasonic hissing sound to a lower frequency where it can be heard through headphones, and leads you to the source. As you move closer, the sound gets louder and is seen as intensity increments on the LED meter. Decrease the sensitivity as you close in on the leak to easily pinpoint its location. As long as the leak is turbulent, there will be enough sound to detect ultrasonically. Pinhole leaks may be detected with as low as 1 psi. The more pressure behind the leak, the more turbulence there will be and the more easy the leak will be to locate.

AccuTrak is so sensitive to sound that it will let you hear the blink of the human eye, but again it is not gas specific. For example, a leak test can be done in an enclosed area which is saturated with refrigerant, and the only indication an ultrasonic will give you is the sound of the leak. But because AccuTrak is focused on a specific band of sound... wind noise, voices, traffic, and most normal operational sounds will NOT be detected. You can actually yell directly into the sensor and hear nothing!

Contest - Win a MiniTemp IR Temperature Gun. 

Pocket sized, Laser Sighted with Leather Holster! $108.99 Value
May's Winner - Wayne Kolkman, Burlington Northern Sante Fe Railroad