Home

Contact Us

Online Catalog

Value Added Reseller

Manufacturers
   Represented

News

Links

Site Map
 

Manufacturers Quick Jump Menu AST Control Concepts OpTest VSC Williamson Gil Instruments Wilcoxon







Wilcoxon Research, Inc.
21 Firstfield Road
Gaithersburg, MD 20878

Phone: 301-330-8811
Tollfree: 1-800-WILCOXON (1-800-945-2696)
Fax: 301-330-8873

Wilcoxon Research makes accelerometers and piezovelocity transducers in single axis and tri-axial configurations for use in vibration monitoring systems. Wilcoxon is the authority on vibration sensors; the preferred sensor for most vibration analysis systems manufacturers.

_________________________________________________________________________________

Here is an explaination of the various sensors that are used for vibration.....

General Purpose 100 mV/g Accelerometers are used over the moderate vibration rnages found on most industrial machinery. Applications include rolling element bearing measurements on motors, blowers and pumps. Others include moderate speed gear boxes, machine tool spindles, and paper machines.

Low Frequency Accelerometers are critical for many industries. The microelectronics, machine tool and paper industries use low frequency for both condition monitoring and process measurements. Others include slow speed agitators, cooling towers, structural testing of buildings and geophysical measurements for energy exploration. Low frequency measurements can be very difficult and time consuming. The important measurement considerations are low frequency response and noise floor. Proper measurement technique and analyst patience are also essential.

High Frequency Accelerometers are used on machinery such as high speed machine tool spindles and compressors. They are also used for resonance testing of turbine blades, disc drives and other small devices. In general, high frequency accelerometers have a lower voltage sensitivity (10 mV/g), allowing measurement of the higher acceleration amplitudes present at high frequency. They are also smaller in size to reduce mass loading of the measurement surface. The critical design factor is the high resonance frequency of the sensing element. The critical applicaiton concern is the resonance characteristics of the mounting configuration.

PiezoVelocity Transducers (PVT) are solid state piezoelectric velocity measurement devices. PVTs are used to measure slow to medium speed machinery in harsh industrial enviroonments. They provide superior performance and will directly replace older electrodynamic velocity sensors in most applications.

The PVT requires the same two wire powering found in most data collectors, analyzers, and online vibration measurement systems. Because the PVT contains no moving parts, it is more reliable than electrodynamic sensors and can be oriented in any direction. The elimination of velocity coils reduces interference from electromagnetic fields.

Triaxial Transducers measure vibration in mutually perpendicular x, y and z axes using three sensing elements housed in one compact case. Triaxials are very well suited for applications such as rotor balancing of military helicopters and machine health monitoring.

High Temperature Accelerometers are used in the numerous applications that require measurements taken in environments where sensor temperaute may exceed 120 degC (250 degF).

Loop Powered Sensors are two-wire acceleration or velocity sensors with a 4-20mA output. They come in several ranges and are available in intrinsically safe models and explosion proof models.

BlueLynx is the new wireless data link based on Bluetooth wireless technology. You do not have to wire it up anymore because BlueLynx can give you actual accelerometer data signals over 100 meters. It also works with process signals. Hook up to four 4-20mA signals and transmit them 100 meters over the Bluetooth 2.4GHz license-free band.

Wilcoxon also has junction boxes and cables and connectors at very reasonable prices.