Svantek SVAN 977A - Effect of the SA 277 Outdoor Protection Unit; Specification of SVAN 977 A as a Vibration Level Meter

221
SVAN 977A User Manual - Appendixes
C.1.3 Effect of the SA 277 Outdoor Protection Unit
See Chapter C.7 for the details related to using of the SA 277 Outdoor Protection Unit.
C.2. SPECIFICATION OF SVAN 977A AS A VIBRATION LEVEL METER
The configuration of the complete VLM and its normal mode of operation
SVAN 977A sound & vibration analyser
SV 80 10mV/m/s2, IEPE accelerometer (see C.6 for details)
SC 27 coiled cable for accelerometer 2 m
Accessories included in SVAN 977A instrument set
SC 16 USB 1.1 cable
Accessories available
SV 55 RS 232 interface for SVAN 95x instrument series
SC 61 TNC to BNC integrated connector
SC 27 TNC (plug) to TNC (plug) 2 m coil cable
SA 17A external battery pack
SA 27 permanent magnet
SA 15 power supply unit
SV 110 vibration calibrator (or equivalent)
Measured quantities
The measured quantities in the vibration meter mode are: RMS, PEAK, P–P and MAX.
Definitions for mentioned parameters are given in Appendix D.
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 bees-wax 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.
Values of the measured acceleration
Linear operating ranges for the acceleration (with the SV 80 sensitivity equal to 10mV/ms
-2
accelerometer.
Two ranges with the nominal values: 100 ms
-2
(LOW), (140 dB, related to 10
-6
ms
-2
).
352 ms
-2
(HIGH) (151 dB related to 10
-6
ms
-2
).
• Linear measurement with the Wh filter:
from 0.003 ms
-2
to 352 ms
-2
(the sinusoidal signal RMS)
from 0.03 ms
-2
to 500 ms
-2
(PEAK)