Condition Monitoring
TechNote #CM1 VIBCODE®
Correct handling with the VIBCODE transducer
Brief description VIBCODE transducer
VIBCODE is a transducer system which automatically
identifies the measurement location. The VIBCODE
transducer consists of an acceleration sensor for the
acquisition of machine vibrations and high-frequency
roller bearing signals as well as a coding ring sensor
for the identification of the measurement location.
Each VIBCODE measurement location is identified by
a uniquely encoded plastic ring. The coding of the
®
measurement location and programming of the mea-
VIBCODE
VIBCODE
surement tasks are carried out in the OMNITREND PC
software. Acceleration
sensor
Measurement principle
The VIBCODE sensor locks firmly onto the VIBCODE
measurement stud using a bayonet mounting. The
code ring sensor then scans the tooth pattern of the
plastic code ring to identify the measurement loca-
tion. The programmed measurements are then car-
ried out for this measurement location.
VIBCODE measurement Code ring sensor
location and coded plastic ring
Advantage
Bayonet mounting: Connection and identification of the coded measurement location
Firm docking on the measurement location ensures
optimum measurement orientation and consistent
contact pressure. Consequently the results are reliable
and reproducible.
Measurement location coding:
Measurement location mixup is impossible; Safe as-
signment of the measurement results in the database
and repeatable trending.
Safety notes
- Only measure at VIBCODE measurement locations,
not directly on the machine
- Ensure that the measurement location is not cov-
¨
VIBCODE
ered, coated with oil or contaminated with grease.
- Do not use silicon oil on the measurement location.
If necessary, clean the measurement locations be-
fore measurement!
- Place the sensor UPRIGHT, press in lightly and fix
with 1/4 clockwise rotation.
- Do not use force to plug in the sensor.
- Protection cap must not be jammed between the
sensor and measurement stud.
- Place the protective caps on the measurement stud
and VIBCODE sensor after use.
Protect measurement stud and sensor from dirt!
PRÜFTECHNIK Condition Monitoring
VIBCODE® TechNote #CM1 - page 2
Cleaning notes
• Wash off slight contamination of the sensor with
soap solution or Isopropanol and cotton cloth.
• To avoid damage to sensitive components in the
sensor head, clean with a brush.
• If compressed air is used for cleaning, only use a
weak jet of air.
Never use a solvent!
Do not scratch off contamination using a
screwdriver or other hard object!
Did you know that ...
... VIBCODE can now also measure the vibration
Cleaning
signals of low speed machines?
VIBCODE sensors with serial numbers (SN) > 2500
have an extended frequency range (2Hz - 10KHz).
30 dB
... a defective or damaged sensor head is easy to
20 dB
replace?
Defective VIBCODE sensors (SN > 2500) no longer 10 dB
need to be sent to the manufacturer, but can be 0
repaired at the local branch.
-10 dB
... non-codable measurement locations can be identi- -20 dB
1 Hz 10 Hz 100 Hz 1kHz 10kHz 100kHz
fied with VIBCODE?
Simply attach a coded measurement stud near the
actual measurement location - ready! First read the Frequency response
coding with VIBCODE and then measure with
another sensor - e.g. temperature.
VIBROCORD:
The VIBCODE sensor is connected to channel A,
measurement is carried out on channel B.
VIBSCANNER & VIBROTIP:
VIBCODE is connected to a measurement channel
and can be detached after the instrument has
identified the measurement location. Measure-
ment is carried out using either an internal or
external sensor.
Measurement with an external acceleration sensor
with VIBROTIP is only possible if the VIBCODE
measurement location number is greater than
6500.
Identification of non-coded measurement locations
PRÜFTECHNIK Condition Monitoring
VIBCODE® TechNote #CM1 - page 3
Measurement studs for every
application
A range of VIBCODE measurement studs are available
in different versions*, which can be adapted to the
most varied local conditions:
*UNC thread versions are also available.
Standard measurement stud:
M8 thread, high-grade steel (VA1.4305)
Typical application:
All machines where a M8 thread with min. 14 mm
hole depth can be drilled.
Standard Bonded
Chemical-resistant standard measurement stud:
M8 thread, high-grade steel (VA1.4305)
Typical application:
As for the standard version, as well as in chemically
aggressive industrial environments.
Measurement stud with bonded mounting
Typical application:
Machine where no threaded mounting can be drilled:
Motors in intrinsically safe areas, machines with thin
bearing houses, ...
Measurement stud with extension:
M8 thread, length 55 mm
M10 thread, length 95 mm Extension
M12 thread, length 170 mm
Typical use:
Unexposed measurement locations where the stan-
dard measurement stud cannot be mounted directly
(e.g. because of cowling).
Measurement stud with lock nut:
Thread M8
Thread M10
Thread M12
Typical use:
Measurement locations which are covered by a cowl-
ing. The measurement studs can replace housing
screws.
Lock nut
PRÜFTECHNIK AG
P.O. Box 12 63
D-85730 Ismaning, Germany
Phone: (+49) 89 99 61 60
Fax: (+49) 89 99 61 62 00
http://www.pruftechnik.com Productive maintenance technology
