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Low Outgassing Accelerometers and Cables - PCB
Swept Sine Response Plot Courtesy of m+p International ACCELEROMETER DESIGN The random vibration, swept sine and shock test environment is very harsh, so a robust accelerometer design is required that exceeds the test levels. There are a number of important sensor characteristics that benefit from a shear mode accelerometer design, which clamps the
MINING EQUIPMENT MONITORING & PROTECTION SOLUTIONS - PCB
Vibration Trend Plot: View and analyze the trend history and alarm levels of a single parameter for any sensor. nn: System Overview: See your machine health and sensor status at-a-glance in a graphical presentation for all sensors and receivers. nn: Email Alerts: Receive alerts about your machine’s health
MachineryMate 200 operating guide - Wilcoxon Sensing Technologies
motors, fans and bearings). The meter displays vibration frequency plots and allows vibration severity and bearing condition to be monitored. 1.1 Control buttons Turn the meter on by pressing the POWER button. The unit will automatically turn off if not used for 1 minute (this time period can be increased up to 60 minutes using the Setup Wizard).
TN-29 Guidance for the Filtering of Dynamic Force, Pressure ... - PCB
Right (Fig. 5) are three color coded plots for four configurations of 4-pole, low-pass filters. All of these filters are normalized to provide 95% amplitude attenuation (see top plot) at a frequency value of 1.0. The three groupings of plots respectively are amplitude versus frequency, phase (0 to 360 degrees) versus
Model 080962-01000 2 Channel Transient Recorder Installation and ...
RS Products from PCB Load & Torque Toll-Free in USA 866-684-7107 716-684-0001 www.pcb.com MODEL 962 RECORDER OPERATION MANUAL 2 TABLE OF CONTENTS
PERFORMANCESPECIFICATION ISOTRON TRIAXIAL ACCELEROMETER 7253D-XXX - PCB
the magnitude of constant current, as shown in Load Capacitance vs. Frequency Plot. • Bias decoupling capacitor CBD and load resistor RL can be determined from: 1 . where f is the lowest frequency of interest. f-3 dB = 2 π RL CBD . CONNECTION DIAGRAM, EACH CHANNEL: C CABLE CURRENT SOURCE C R ACCELEROMETER + - - BD + L C:
TORQUE-ANGLE-TENSION TESTING & ANALYSIS OF THREADED FASTENER ... - PCB
Variety of Plots – After the test is completed, rundown data and plots may be viewed on the computer display, printed as hard copy, and/or saved for later data analysis. Numerous configurable plots can be generated. Complete Test Systems – A complete torque-tension test system will typically include a rotary torque-angle transducer,
SeeHawk® Reports | Test & Measurement - PCTEL
You’ve tested your mobile network’s coverage. Don’t wait to see the results. With SeeHawk® Reports, you can generate printable, customizable reports from PCTEL scanning receiver data within minutes of completing a drive or walk test.SeeHawk Reports even merges multiple data sets, simplifying multi-day benchmarking or site survey campaigns.
Detecting Rolling Element Bearing Faults Using the ECHO Wireless ... - PCB
Figure 7 – True Peak Acceleration Trend Plot of Faulted Bearing . The True Peak Acceleration trend plot (Figure 7 above) clearly shows high amplitudes exceeding the alarm levels of the faulted rolling element bearing. When the bearing was replaced, the vibration smoothed out well below the warning alarm level.
Continuous Condition Monitoring With Vibration Transmitters and ... - PCB
Figure 2 shows a basic spectrum plot of potential machinery failures. The units for the frequency and amplitudes have been left off purposely as the actual values would not allow all the faults to be visible in the limited area. Bearing faults occur at nonsynchronous multiples of machinery turning speed. Specific bearing fault
PCB Piezotronics | Measure vibration, pressure, force, and more
PCB Piezotronics | Measure vibration, pressure, force, and more
Piezoresistive triaxial accelerometer - PCB
Frequency response 20 Hz to 3000 Hz, dB plot continued to 40kHz (z axis) 20 Hz to 1500 Hz, dB plot continued to 40kHz (X Y axis) Zero measurand output mV/g at 5V and 10V Maximum transverse sensitivity % of sensitivity Specifications Dynamic characteristics 7268C-500 7268C-2000 Range g ±500 ±2000 Sensitivity (at 100 Hz & 10 g) [1] mV/g (typ) 0 ...
Low frequency machinery monitoring: measurement considerations
terms of acceleration, velocity, and displacement. The displacement plot exhibits the strongest low frequencies, but attenuates the spectrum above 10,000 cpm (167 Hz). The acceleration display provides the broadest frequency range. Figure 3a. Accelerometer double integrated to displacement Figure 3c. Accelerometer double integrated to acceleration
General Signal Conditioning Guide - PCB
SIGNAL CONDITIONING GUIDE3 V 2 = q / C 1 +C 2 + C 3) (Eq.2) where: C 2 = cable capacitance in pF C 3 = input capacitance of the voltage amplifier or readout instrument in pF According to the law of electrostatics (Equations 1 and 2), sensing elements with a low capacitance will have a high volt-
Dynamic ICP Pressure Sensors - PCB
Figures 5 and 6 show plots of the thermocouple output versus flow rate for the sensor and electronic locations respectively. 4 Figure 4 Thermocouple Location Simulating Electronics Figure 3 Thermocouple Location Simulating Sensor Location . Figure 5 Temperature of Sensor Location Vs. Flow
SHOCK MONITORING TECHNOLOGY FOR RECIPROCATING MACHINERY - PCB
the same compressor. (Note: Time runs from right to left on this plot.) The RFI trace appears as a “cityscape” and shows a significant in crease in amplitude over the one hour period. The overall vibration trend, on the other hand, shows little change in amplitude and, in this case, did not trip an alarm. Some level of mechanical looseness
How Sensor Mounting Affects Measurements - PCB
motor driving a centrifugal pump. The first plot is a trend of rms velocity, the second rms acceleration, and the third is a high pass filtered, 2k Hz HPF, true peak acceleration (an overall HFE measurement). It is clearly seen that the HFE measurement is far more sensitive to the bearing fault than the rms measurements.
PCB Piezotronics | Measure vibration, pressure, force, and more
Trend plots Status Alarms Reports Echo' sensor configuration utilities MS SOL Server 2005 Actual distances can vary widely based on conditions Typical Configuration I EchoPlus@ Wireless Junction Box Receiver has DHCP or static IP addressing Optional high gain antenna EchoT Receiver Monitored Machinery Wired Sensor Traditional. Wired Sensor
Guarding the Health and Availability of a Brushless Generator ... - PCB
The EXCEL plot below (Figure 8) documents the measured field resistance measured to ground at 1 minute intervals for July 20 th through July . Page 7 27 th, 2006. Generator field voltage, denoted as V fd, is also plotted as an indicator of when the machine was in service since the unit was cycled in this time frame.
PC9000 KNOW YOUR TORQUE-ANGLE ROTARY TORQUE PCB Load & TorqueDivision’s ...
the data to draw torque vs. time or torque vs. angle plots that can help analyze problematic joints and determine appropriate tightening strategies. Rotary torque transducers are available in capacities ranging from 32 ozf-in to 18,000 lbf-ft (0.23 to 25,000 Nm), and fit most popular drive sizes. PCB Load & Torque provides calibration