Fluke VIB 6.631 Owner's manual

FUNCTION
The sensor acquires the signal optically using a red laser. The
laser beam exits from the sensor head and hits a measuring
mark on the rotating shaft. The measuring mark can be
light-increasing (e.g., reflective foil VIB 3.306) or light-re-
ducing (contrast mark, e.g., black line on bright surface).
Whenever the sensor acquires a brightness difference, it
outputs an electrical pulse. Based on the repetition rate of
the voltage pulses, the measuring device calculates the shaft
speed.
MAINTENANCE
No maintenance is possible for this sensor. Moisten a clean,
lint-free cloth with water to clean the optical lens. Avoid
direct contact with the lens. Do not use alcohol for cleaning!
TRANSPORTATION AND STORAGE
•Put the sensor, cable and stand in the measuring device
case.
•Short-circuit the magnetic pole at the stand using the
washer.
Signal profile
Laser Trigger
RPM Sensor
VIB 6.631, VIB 6.631 EX
Installation and Operation
Printed in Germany LIT 66.200.EN.092019
PARAMETER VIB 6.631 / VIB 6.631 EX
Measurement
Measuring principle Optical
Measuring range 3 to 120,000 rpm
Temperature range -20 °C ... +50 °C
Electrical
Power supply < 5.8 V (from measuring device)
Output 5 V (TTL)
Laser wavelength 630 - 680 nm (red)
Laser class 2 (DIN EN 60825-1, 2014)
Mechanical
Connection Trigger cable VIB 5.432-2,9
Degree of protection IP 65
Weight 76 g
Dimensions (L x D) 125 mm x 34 mm
EX
Marking II 2 G Ex ib op is IIC T4
TECHNICAL DATA
Information regarding EX protection
Sensor VIB 6.631 EX is only provided for the “connection to
a corresponding measuring device / operating equipment
with separate EC type-examination certificate” or for the
“connection to certified intrinsically safe circuits taking into
account the maximum values”:
Ui = 12 V DC
Pi= 600 mW
Ii= 160 mA
Ci= 328 nF
Li = negligibly small
0 V
5 V
Light-increasing measuring mark:
Signal rises from 0 V to 5 V.
Light-decreasing measuring mark:
Signal drops from 5 V to 0 V.
0 V
5 V
The information in type-examination certificate Z elm 1 0
ATEX 0429 must be observed (www.pruftechnik.com). Fur-
thermore, the European Installation Regulations (EN 60079-
14) in the current version must be observed!
Fluke Deutschland GmbH
Freisinger Str. 34
85737 Ismaning, Germany
+ 49 89 99616-0
www.pruftechnik.com

The laser trigger / RPM sensor (in short: sensor) is used as
trigger for vibration measurements and for RPM measure-
ments using a PRUFTECHNIK measurement data collector.
SAFETY INFORMATION
• Read these instructions carefully prior to use.
• Use original accessories only.
• Do not use defective sensors.
• Do not open the housing.
• Prior to the installation of measuring components,
switch off the machine and secure it against restarting
according to the applicable regulations.
• Comply with the applicable safety regulations when per-
forming measurements on machines.
• Check that the measuring setup can move freely prior to
restarting the machine. Avoid contact of the measuring
setup with rotating machine parts. Risk of injury and
property damage!
• For storage and transportation, short-circuit the magnet-
ic pole at the stand using the washer supplied. This is to
minimize the magnetic field strength. Observe the safe-
ty data sheet (MSDS) for the magnet holder VIB 3.420
(www.pruftechnik.com).
• The sensor is in compliance with the relevant European
Directives. The complete Declaration of Conformity is
available at www.pruftechnik.com/certificates.
INSTALLATION
• Switch the machine off and secure it against uninten-
tional restarting.
Mount sensor to stand:
• Guide the sensor mount through
the clamping device, until the
knurled nut is centered above the
mount.
• Hand-tighten the knurled nut.
Mount stand to machine:
• Select a suitable position on the machine according to
the following criteria: Cleanliness, magnetic properties,
permissible measuring distances, minimum diameter for
curved surface: 40 mm.
• Carefully place the magnetic base with one edge first to
avoid high impact loads.
• Attach the measuring mark to the machine shaft.
• Using the cable, connect the sensor to the measuring
device.
Typical setup
Sensor
Shaft
Permissible angle range:
Reflective foil: ± 45° (green)
Contrast mark: ± 15° (yellow)
L
L: Measuring distance*
with reflective foil = 5 cm ... 100 cm
with contrast mark = 5 cm ... 20 cm
ADJUSTMENT
• Align the sensor with the laser to the measuring mark.
• Switch on the laser as follows for adjustment purposes:
- In “Balancing” operating mode, switch on the laser via
the dialog menu on the measuring screen.
- In “Multimode” operating mode, start a RPM measure-
ment, or activate the “Coast-down Analysis” measuring
task. The laser switches on automatically.
CAUTION!
Do not look into the laser beam! Risk of eye injury!
• Unlock the ball joint at the stand.
• Rotate and tilt the fixture, until the
laser beam hits the measuring mark. To
achieve stable signals, align the sensor
with a slight angle to shaft surface and
shaft axis.
• Lock the ball joint.
Measuring distances and angle range
A: Sensor VIB 6.631 / VIB 6.631 EX
B: Measuring mark (reflective foil VIB 3.306, contrast mark)
C: Stand VIB 6.632
D: Connection cable VIB 5.432-2.9
E: VIBXPERT II, VIBXPERT EX, VIBSCANNER, VIBSCANNER EX
Operation and area of application
VIB 6.631 VIB 6.631 EX
Measuring device VIBXPERT II,
VIBSCANNER
VIBXPERT EX,
VIBSCANNER EX
Area of application
B
LASER LIGHT
CLASS II LASER PRODUCT
P<1 mW, λ=670 nm
Complies with 21CFR1040.10 & 1040.11
DON'T STARE INTO BEAM
A
C
D
E
S2 S4 S6 S8
S1 S3 S5 S7 S9
VIBBUS - MUX 3494
NEXT MUX
STRING LINE
M
ENT
RAM TURBALIGN
R
VIBROSPECT FFT
R
TEST
OFF
1
2345678
9
10
11
CHANNEL
TEST SHORT OPEN
VIBRATIONSENSOR
CONNECTIONBOX
VIB8.530
OUTPUT SELECTOR
-2
1 mV / ms
VIBROSPECT FFT
VIBROTIP
1
2
3
4
5
6
7
8
9
10
11
F
E
S
C
M
E
N
U
H
E
L
P
*Dependent on ambient light conditions and angle of reflection.