© TPI Europe 2021
6 TPI 9085 User Guide V1.0
2.2.1 Vibration & Temperature readings
Once a vibration reading has been taken, the display will show four values, as shown in
the example screen opposite. The values are colour coded to show their alarm status as
explained in the following sections.
The four values shown in the readings screen are:
•
ISO value (velocity in mm/second or inch/s)
•
Bearing Noise in BDU (Bearing Damage Units)
•
Total g (acceleration)
•
Temperature
These readings are explained in more detail below with some examples of what they
actually mean:
ISO value (mm/s)
The ISO value (in mm/s or inch/s) is the large number displayed at the top of the screen,
which is the RMS (average) of the vibration velocity in the frequency band 10Hz (600
RPM) to 1kHz (60,000 RPM) or 2Hz (120 RPM) to 1kHz (60,000 RPM), as specified by
the ISO standard
1
. The correct frequency band is automatically selected by the meter
based on running speed.
The ISO value background is colour coded according to the ISO 10816-1 vibration
velocity level chart (see below). The colour coded background indicates the condition of
the machine according to the size and type of machine selected with the
Setup Wizard
(see section 2.3.1).
1
ISO 10816-1:1995. Mechanical vibration -- Evaluation of machine vibration by measurements on non-rotating parts
