10
Technical data are subject to change without notice.
ISO 9001 certified. © Copyright SPM 1996-9. 71519.Z
SPM Instrument AB
• Box 4 • S-645 21 Strängnäs • Sweden
Tel +46 152 22500 • Fax +46 152 15075 • [email protected] • www.spminstrument.se
Measuring Equipment
The SPM equipment for manual vibration monitoring
consists of:
• Vibrameter VIB-11
• Measuring cable 46044 (46045)
• Vibration transducer TRV-13 (TRV-12)
• TRX-16, Magnetic base for TRV-12
• TRX-17, Probe for TRV-12.
Follow-up forms can be supplied in pads of 25 each
(ordering number VIC-12).
Transducer Mounting
The accuracy of vibration readings depends largely
on the connection between transducer and measur-
ing point. Only stiff connections, by magnet, screw or
cement, will allow the transducer to accurately follow
the movements of the vibrating surface.
Magnetic Mounting
The vibration transducer is normally mounted on the
machine with the magnetic base.
Attach the transducer to a
smooth, flat surface
, with
the main sensitivity axis pointing in the desired meas-
uring direction. Spot-face the contact surface if nec-
essary. The magnetic base has a diameter of 27.5 mm.
Screw Mounting
Screw mounting is the best alternative where the
magnetic base cannot be used. Prepare threaded
mounting holes as shown in the figure.
TRV-13 has thread size UNF 1/4"-28 and TRV-12 has
M8. The transducers are delivered with three washers
for adjusting the connector angle. Each washer turns
the transducer 90
°
.
If the vibration transducer is to be permanently
mounted on the machine, secure the low noise coaxial
cable with a clamp close to the connector (see figure).
For installations in moist environments, use sealing
TNC cable plugs SPM 13008 to prevent cable corro-
sion.
TRX-17
TRX-16
TRV-12/13
VIB-10
ø 27
Cable
clamp
17
ø 27.5
36
9
ø 15
t
TRV-12: t = M8
TRV-13: t = UNF 1/4" -28
min. 16
ø 6.9
(ø 5.5)
M8
(UNF
1/4" -28)
min. 12
max. 0.7
min. 10
Main sensitivity axis
46044
46045
