Accelerometer & related products FAQ
Are numerical values "frequency range" on the catalog specification the value when the NP-3210 is fixed with the wax? Also, does the temperature of the measurement object affect to soften wax? Are there any affects to the performance when wax is softened?
Frequency range of catalog specifications are when
the unit is fixed with instant glue.
When it is fixed with wax, thickness of wax affects to the frequency characteristics. For further information, please refer to the instruction manual.
Wax becomes softer when temperature rises to human body temperature (36 degrees). If the temperature rises to 36 degrees or more, it is softened and melted away. Also, frequency characteristics are worsened. Therefore, the wax is usable up to the human body temperature.
Use the fingertips to heat and soften the wax with human temperature and round it into 2 mm balls. Put it on the measurement object, and spread in thin layer with the NP-3210 to fix. Wax becomes hard and NP is fixed firmly, when temperature goes down. Therefore frequency characteristics become better.Please make sure to remove a rubber packing before connection when used with the NP-3211.
When measurement object is magnetic body, is there any problem if I use a magnet to fix the accelerometer?
Method: Fix the compact magnet to the accelerometer with instant glue and fix the magnet surface to the measurement object.
There is no problem. The frequency characteristics are affected by adhesion between magnet and measurement object. If no horizontal vibration but only vertical vibration is generated, up to 10 kHz can be measured. The NP-0102 magnet base can be used in combination with the optional magnet table to the NP-3210 on the table.
It is mentioned in the instruction manual of the NP-3210, so please refer to it.