PCE Instruments PCE-VC 20 Vibration Meter Calibrator User Manual
- June 10, 2024
- PCE Instruments
Table of Contents
Instruments PCE-VC 20 Vibration Meter Calibrator
User Manual User Manual
PCE-VC 20 Vibration Meter Calibrator
User manuals in various languages (Deutsch, français, italiano, español,
português, nederlands, türk, polski, русский, 中文) can be downloaded here:
www.pce-instruments.com
Last change: 23 August 2017
v1.0
© PCE Instruments
Safety notes
Please read this manual carefully and completely before you use the device for
the first time.
The device may only be used by qualified personnel and repaired by PCE
Instruments personnel. Damage or injuries caused by non-observance of the
manual are excluded from our liability and not covered by our warranty.
- The device must only be used as described in this instruction manual. If used otherwise, this can cause dangerous situations for the user and damage to the meter.
- The instrument may only be used if the environmental conditions (temperature, relative humidity, …) are within the ranges stated in the technical specifications. Do not expose the device to extreme temperatures, direct sunlight, extreme humidity or moisture.
- Do not expose the device to shocks or strong vibrations.
- The case should only be opened by qualified PCE Instruments personnel.
- Never use the instrument when your hands are wet.
- You must not make any technical changes to the device.
- The appliance should only be cleaned with a damp cloth. Use only pH-neutral cleaner, no abrasives or solvents.
- The device must only be used with accessories from PCE Instruments or equivalent.
- Before each use, inspect the case for visible damage. If any damage is visible, do not use the device.
- Do not use the instrument in explosive atmospheres.
- The measurement range as stated in the specifications must not be exceeded under any circumstances.
- Non-observance of the safety notes can cause damage to the device and injuries to the user.
We do not assume liability for printing errors or any other mistakes in this
manual.
We expressly point to our general guarantee terms which can be found in our
general terms of business.
If you have any questions please contact PCE Instruments. The contact details
can be found at the end of this manual.
Specifications
Vibration magnitude (RMS values)
Vibration acceleration| 10 m/s2| ±3 % at 0 to 40 °C
Vibration velocity| 10 mm/s| ±3 % at 0 to 40 °C
Vibration displacement| 10 pm| ±3 % at 0 to 40 °C
Vibration frequency| 159.15 Hz| ±0.05 % at -10 to 55 °C
Radian frequency| 1000/s| ±0.05 % at -10 to 55 °C
Level indication| Percent display, above ±3 % beep tone
Settling time| < 10 s
Maximum weight of test object for stated accuracy| 600 g
Vibration exciter
Dynamic force| 10 N
Max. torque| 2 Nm
Nominal torque| 1 Nm
Max. transverse force| 20 Nm
Transverse vibration| < 10 % of main axis, measured 14 mm above shaker
Mounting of test object| M5 tapped hole, 7 mm deep Clamping magnet Adhesive
Operating temperature ranges for 3% accuracy
5% accuracy| 0 to 40 °C -10 to 55 °C
Humidity| <90 % at 30 °C, no condensation
Magnetic scatter field at shaker| < 0.2 mT
Power supply| Built-in NiMH accumulator, 7.2 V / 1.6 Ah
Battery operating time| Approx. 5 h with m = 100 q
Charge time of accumulator| 3 h
Charge socket| DIN 45323 (5.5 / 2.1)
Positive terminal at center pin
Charge voltage| 11 to 18 V DC
Charge current| <1 A
Dimensions| 100 x 100 x 120 mm
Weight| 2.2 kg
System description
Purpose
- Easy and simple calibration of vibration metering, recording and control equipment.
- Regular checks of such devices and installations.
- Fault finding.
Properties
-
Handy and robust battery device for laboratory and field use.
-
Load-independent vibration magnitude with and field use.
– 10 m/s2 vibration acceleration
– 10 mm/s vibration velocity
– 10 m vibration displacement -
Quartz stabilized vibration frequency of 159.15 Hz (radian frequency 1000/s).
-
Suitable for test objects weighing up to 600g.
The vibration calibrator PCE-VC20 generates mechanical vibrations with quartz
stabilized frequency and precisely controlled magnitude. Vibration sensor,
including connected cables, signal conditioners and readout instruments can be
calibrated in acceleration, velocity or displacement units.
A reference accelerometer inside the shaker head and a control circuit keep
the vibration level constant and independent of the weight of the attached
measuring object. A display indicates the error in percent. There is an
acoustical warning when the error limit is exceeded. Because of its internal
rechargeable battery, the PCE-VC20 is well suited for mobile application. The
instrument features an automatic switch-off function preventing accidental
discharging. The display indicates the battery charging condition. The unit
comes with an external mains supply for charging.
The supplied plastic carrying case allows convenient handling and safe
transport.
Operation
6.1 Attaching the Test Object
The Vibration exciter of the PCE-VC20 has a tapped M5 hole with 7 mm depth for
the attachment of the device under test. The supplied stud bolts and stud
adapters or a clamping magnet can be used for mounting. The surface of the
vibration exciter has made extremely resistant by plasma nitride coasting.
For light transducers, adhesive wax or double sided adhesive tape can be used
for mounting.
A flat surface for adhesive mounting can be obtained by using the M5
insulating flange Model 029 which is available from Metra. Magnetic and
adhesive attachments are only allowable for roughly estimated calibrations.
Accuracy is only guaranteed for screw attachment. When mounting the specimen,
pay attention to the symmetrical distribution of the object weight. Otherwise,
the vibrating system may be deflected from its main axis. When using coupling
structures for calibration of transducers, symmetrical attachment becomes
especially important, for instance, at the calibration of the x and y axis of
a triaxial accelerometer. In the case, using a balance weight as shown in the
following illustration is recommended.
Please note that heavy
connecting cables should be supported close to the test object. However, an
application of force via the cable must be avoided.
The maximal torque rating of 1 to 2 Nm at the vibration exciter must not be
exceeded since this may damage the instrument.
The PCE-VC20 should be placed on a rigid surface. Hand-held operation is not
recommended because of possible errors.
6.2 Calibration
After attaching the device under test switch the PCE-VC20 on by depressing the
“On/Off” button until the display lights up. Device information, such as
hardware and software versions and the date of the last calibration, is
displayed for a few seconds. After short time the vibration signal becomes
stable. The display shows the values of vibration frequency and magnitude
(Figure 2). Please note that these are not measuring value but only normal
values.
In the upper right hand corner
you will see the actual accuracy of the vibration magnitude in percent. After
short period of time the percent value should converge on zero.
If the absolute error exceeds 3%, the percent value will change to inverse
characters and a beep sound will be generated. In this case no calibration can
be performed.
When the maximum weight of the test object is exceeded, instead of the percent
value, an error message “OVERL” will appear and the shaker will be switched
off. To proceed with calibration, first switch the calibrator off. Then reduce
the weight of the test object and switch the calibrator back on. The
admissible weight is up to 500 grams, depending on the selected frequency. The
overload message can also be eliminated by lowering the vibration magnitude.
In the lower display line the date of the last calibration of your PCE-VC20 is
displayed. This entry can only be modified during factory calibration. Please
read also section 5 for details about calibration.
The PCE-VC20 can be switched off by depressing the “ON/OFF” key for at least
one second. Should this be omitted, a timer is provided which switches the
calibrator off after 10 minutes.
Caution: The vibration calibrator is not to be used in dirty and dusty
environments. Particular care should be taken that no ferromagnetic particles
get inside of the instrument: They may damage it within short time. Defects
due to dirt and dust are not covered by the warranty.
6.3 Changing the Accumulator
The battery indicator is located in the upper left hand corner of the display.
A full bargraph is displayed when the battery is fully charged. Even if the
bargraph is empty the instrument can still be used within its specifications
for a certain period of time. When the battery voltage drops under a critical
value, the PCE-VC20 is switched off automatically. The instrument is equipped
with a NiMH accumulator providing power for approximately 5 hours of
operating. To charge the battery, connect the supplied mains plug adapter (15
VDC) to the DIN socket at the side of the case. The unit should preferably be
switched off during charging. Charging will take about 3 hours. During the
charging process the battery indicator will be continuously moving (Figure 3).
Figure 3: Charge
indication
During the charging process the PCE-VC20 can be used for calibration. However,
this will extend the necessary charging time.
The accumulator should be changed at room temperature. At higher temperatures
charging can be stopped before reaching the full capacity because of the
build-in temperature sensor.
The battery has no memory effect. Partial charging is permissible.
Permanent connection of the mains adapter is not recommended. This may lead to
premature wear of the battery. In order to avoid overcharging the battery, it
is not recommended that you disconnect and connect the mains adapter again
immediately after charging is finished.
When the unit is not in use, the battery should be charged at least once a
year.
The build-in battery is maintenance-free. Like all accumulators it has a
limited number of charging cycles. If the operating time with a fully charged
battery becomes insufficient, the battery should be replaced. In this case,
the calibrator should then be returned to the manufacturer will also the
accuracy of the calibrator.
6.4 Reset
In the unlikely event that your PCE-VC20 cannot be switched on by the “On/Off”
key, it may be necessary to press the Reset button. This button is found on
the bottom side of the case near the key pad. Use a thin non-metallic object,
such as a toothpick, to press the button inside the hole. This will start the
instrument. Pressing the Reset button has no effect on accuracy.
Calibration
The vibration characteristics of the PCE-VC20 are very stable even after intensive use. Typical changes are below 1% per year. We recommend annual re- calibration. In case of shock load, dropping the instrument, etc. immediate recalibration is advised.
Contact
If you have any questions, suggestions or technical problems, please do not hesitate to contact us. You will find the relevant contact information at the end of this user manual.
Disposal
For the disposal of batteries in the EU, the 2006/66/EC directive of the
European Parliament applies. Due to the contained pollutants, batteries must
not be disposed of as household waste. They must be given to collection points
designed for that purpose.
In order to comply with the EU directive 2012/19/EU we take our devices back.
We either re-use them or give them to a recycling company which disposes of
the devices in line with law.
For countries outside the EU, batteries and devices should be disposed of in
accordance with your local waste regulations.
If you have any questions, please contact PCE Instruments.
PCE Instruments contact information
Germany
PCE Deutschland GmbH Im Langel 4
D-59872 Meschede
Deutschland
Tel.: +49 (0) 2903 976 99 0
Fax: +49 (0) 2903 976 99 29
info@pce-instruments.com
www.pce-instruments.com/deutsch|
France
PCE Instruments France EURL
23, rue de Strasbourg
67250 SOULTZ-SOUS-FORETS
France
Téléphone: +33 (0) 972 3537 17
Numéro de fax: +33 (0) 972 3537 18
info@pce-france.fr
www.pce-instruments.com/french
---|---
United States of America
PCE Americas Inc.
711 Commerce Way suite 8
Jupiter / Palm Beach
33458 FL
USA
Tel: +1 561-320-9162
Fax: +1 561-320-9176
info@pce-americas.com
www.pce-instruments.com/us| The
Netherlands
PCE Brookhuis B.V.
Institutenweg 15
7521 PH Enschede
Nederland
Telefoon: +31 (0) 900 1200 003
Fax: +31 53 430 36 46
info@pcebenelux.nl
www.pce-instruments.com/dutch
The Netherlands
PCE Brookhuis B.V.
Institutenweg 15
7521 PH Enschede
Nederland
Telefoon: +31 (0) 900 1200 003
Fax: +31 53 430 36 46
info@pcebenelux.nl
www.pce-instruments.com/dutch|
China
PCE (Beijing) Technology Co.,Ltd
1519 Room, 4 Building
Men Tou Gou Xin Cheng,
Men Tou Gou District
102300 Beijing
China
Tel: +86 (10) 8893 9660
info@pce-instruments.cn
www.pce-instruments.cn
Turkey
PCE Teknik Cihazları Ltd.Şti.
Halkalı Merkez Mah.
Pehlivan Sok. No.6/C
34303 Küçükçekmece – İstanbul
Türkiye
Tel: 0212 471 11 47
Faks: 0212 705 53 93
info@pce-cihazlari.com.tr
www.pce-instruments.com/turkish
Italy
PCE Italia s.r.l.
Via Pesciatina 878 / B-Interno 6
55010 LOC. GRAGNANO
CAPANNORI (LUCCA)
Italia
Telefono: +39 0583 975 114
Fax: +39 0583 974 824
info@pce-italia.it
www.pce-instruments.com/italiano|
Spain
PCE Ibérica S.L.
Calle Mayor, 53
02500 Tobarra (Albacete)
España
Tel. : +34 967 543 548
Fax: +34 967 543 542
info@pce-iberica.es
www.pce-instruments.com/espanol
Hong Kong
PCE Instruments HK Ltd.
Unit J, 21/F., COS Centre
56 Tsun Yip Street
Kwun Tong
Kowloon, Hong Kong
Tel: +852-301-84912
yi@pce-instruments.com
www.pce-instruments.cn
United Kingdom
PCE Instruments UK Ltd
Units 12/13 Southpoint Business Park
Ensign Way, Southampton
Hampshire
United Kingdom, SO31 4RF
Tel: +44 (0) 2380 98703 0
Fax: +44 (0) 2380 98703 9
info@industrial-needs.com
www.pce-instruments.com/english
References
- France.fr : Explore France and its wonders - Explore France
- iberica.es
- instruments.cn - The domain is available for purchase
- Computer Instruments | Home
- Discover Italy: Official Tourism Website - Italia.it
- N.E.E.D.S., (Nutritional Ecological Environmental Delivery System) specializes in providing products, information, and education
- PCE（北京）科技有é™å…¬å¸
- Improtek LTDA Distribuidor oficial de PCE Instruments | PCE Instruments
- PCE Teknik Cihazlar Paz. Tic. Ltd.Şti. | PCE Instruments