Conformance testing
This chapter contains the information needed to conduct conformance testing according to the specified
standards.
Mounting for vibration tests
The accelerometer can be connected with the VLM using proper cable provided by the manufacturer.
The accelerometer can be mounted on the plate in various ways:
• using threaded stud onto a flat, smooth surface,
• using thin layer of beeswax for sticking the accelerometer into the plate,
• using mica washer and isolates stud, where the body of accelerometer should be electrically isolated from
the measuring object,
• using permanent magnet, which also electrically isolates the accelerometer.
Digital filters
High-pass filters (see Chapter C.5 for frequency response characteristics)
• HP
• HP1
• HP3
• HP10
Frequency weighting filter (filter includes Band Limiting filter).
Conforms with ISO 8041-1:2017 (see Chapter C.5 for frequency response characteristics)
• Wk from 0.1 Hz to 400 Hz
• Wd from 0.1 Hz to 400 Hz
• Wc from 0.1 Hz to 400 Hz
• Wj from 0.1 Hz to 400 Hz
• Wm from 0.1 Hz to 400 Hz
• Wb from 0.1 Hz to 400 Hz
• Wg from 0.8 Hz to 100 Hz
• Wh from 0.8 Hz to 4000 Hz
Integrating filters (see Chapter C.5 for frequency response characteristics):
• Vel1 from 0.2 Hz to 4100 Hz
• Vel3 from 0.2 Hz to 4100 Hz
• Vel10 from 0.2 Hz to 4100 Hz
• Dil1 from 0.1 Hz to 260 Hz
• Dil3 from 0.2 Hz to 510 Hz
• Dil10 from 1 Hz to 2050 Hz
Special filter
Filter for the evaluation of the machinery condition:
• VelMF from 0.2 Hz to 4100 Hz; conforms with ISO 10816 (see Chapter C.5 for the frequency response
characteristics)
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