Meggitt VM600 Hardware Manual

VM600 MPS hardware manual (standard version) MAMPS-HW/E 7 - 11
Edition 17 - February 2018
Smax measurement
PROCESSING MODES AND APPLICATIONS
Method C – Measuring the real maximum displacement value (Smax) directly from
the orbit
According to ISO 7919-1 method C, the value of S
max(pk)
the maximum value of
displacement, can be calculated directly from the orbit using the following equation:
S
max(pk)
= Maximum { ( X(t)
2
+ Y(t)
2
)
0.5
}
This also allows the value of S
max(pp)
(that is, peak to peak) to be approximated from the
following equation:
S
max(pp)
= 2 ×S
max(pk)
NOTE: The S
max
processing on VM600 MPC4 cards, VM600 XMV16 cards and
VibroSmart VSV300 modules all use ISO 7919-1 method C to calculate the value
of S
max
.
However, since the actual signal processing implemented by VM600 MPC4 cards,
VM600 XMV16 cards and VibroSmart VSV300 modules is different, the calculated
S
max
values obtained from their respective S
max
processing functions can be
slightly different.
Figure 7-8: Measurement of S
max
using two proximity probes
Proximity
transducer
Bearing housing
To monitoring
electronics
Shaft

Meggitt VM600 Specifications

General

Brand	Meggitt
Model	VM600
Category	Measuring Instruments
Language	English