Wilcoxon Sensing Technologies’ Post

What is the True Cost of "Low Cost" Accelerometers? Accelerometers with lower mean time between failures (MTBF) values result in higher costs for permanently installed vibration sensor applications. By taking the MTBF and manufacturing quality into account when making an accelerometer purchase, you can achieve lower overall program costs. To give some idea of the relative cost differences due to various MTBF rates, we calculate the “lifetime cost” per accelerometer that accrues after the sensors are bought. We use an example installation of 300 accelerometers with a program life of 20 years to compare high-, medium-, and low-quality accelerometers based on the field-failure MTBF calculation. For each, we summarize the cumulative costs over twenty years. Assumptions ● Each time the total exposure of accelerometers reaches the MTBF, one accelerometer will fail. We will consider infant mortality as well. ● Each time an accelerometer fails, it requires one man-hour to isolate the failure, replace the accelerometer, and perform all the tasks necessary to return the unit for a replacement. ● All accelerometers are replaced for zero cost. This is equivalent to having accelerometers with a "lifetime warranty” against failures. The full case study is below and it can be downloaded at https://lnkd.in/gdU-Dwyc

To view or add a comment, sign in

Explore topics