vacuubrand DVR 2 User manual

page 1 of 17
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the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
DVR 2
Analog/Digital Rough Vacuum Gauge
Technology for Vacuum Systems
Instructions for use

page 2 of 17
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the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Dear customer,
Your VACUUBRAND vacuum gauge shall support you at your work for a long time without any trouble
and with full load output. Thanks to our large practical experience we attained much information how you
could add to an efcient application and to personal safety. Please read these instructions for use prior
to the initial start-up of your controller.
VACUUBRAND vacuum gauges are the result of many years of experience in construction and practi-
cal operation of these vacuum gauges combined with the latest results in material and manufacturing
technology.
Our quality maxim is the „zero fault principle“: Every vacuum gauge leaving our company, is tested in-
tensively including an endurance run. Therefore faults, even those which occur rarely, are identied and
can be eliminated immediately. The achievement of the specications after the endurance run is tested
for every device.
Every VACUUBRAND device achieves the specications.
We are committed to providing our customers with this high quality standard.
We know that the device cannot replace all of your real work and hope that our products contribute to
an effective and trouble-free realisation of your work.
Yours
VACUUBRAND GMBH + CO KG
After sales service:
Contact your local dealer or call [phone].
The document ”Safety information for vacuum equipment” is part of this
manual! Read the ”Safety information for vacuum equipment” and observe
the instructions contained therein!
Trademark index:
VACUU•LAN® (US-Reg.No 3,704,401), VACUU•BUS®, VACUU•CONTROLTM, chemistry-HYBRIDTM, Peltronic®,
TURBO•MODETM, VARIO®, VARIO-SPTM, VACUUBRAND®(US-Reg.No 3,733,388) and also the shown com-
pany logos are trademarks of VACUUBRAND GMBH + CO KG in Germany and/or other countries.

page 3 of 17
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Contents
Safety information! .....................................................................................................4
General information............................................................................................................................4
Intended use.......................................................................................................................................4
Connecting the device .......................................................................................................................4
Operating conditions .........................................................................................................................5
Safety during operation .....................................................................................................................5
Maintenance and repair .....................................................................................................................5
Technical data .............................................................................................................7
Wetted parts ......................................................................................................................................7
Use and operation ......................................................................................................8
Changing the pressure unit ...............................................................................................................8
Pressure measurement .....................................................................................................................9
Clock symbol .....................................................................................................................................9
Adjusting the operating time and the measuring cycle ......................................................................9
Display of the battery‘s discharge status.........................................................................................10
Troubleshooting .......................................................................................................10
Readjustment of the vacuum gauge DVR 2 ...........................................................11
Adjustment at atmospheric pressure ............................................................................................... 11
Adjustment under vacuum............................................................................................................... 11
Adjustment to a reference pressure ................................................................................................12
Calibration in the factory .........................................................................................12
Replacing the battery ...............................................................................................13
Notes on return to the factory .................................................................................14
Health and safety clearance form ...........................................................................15
EC Declaration of Conformity .................................................................................16
➨DANGER indicates a hazardous situation which, if not avoided, will re-
sult in death or serious injury.
☞WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
• CAUTION indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
NOTICE is used to address practices not related to personal injury.
Note: The device contains a battery!
Remove battery before disposal (see section ”Replacing the bat-
tery”) and dispose of battery and device separately and according
to regulations.
NOTICE

page 4 of 17
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Safety information!
General information
☞ Read and comply with this manual before installing or operating the equip-
ment.
☞ Do not use the equipment if it is damaged.
Remove all packing material, remove the product from its packing-box, remove the
protective covers and keep, inspect the equipment.
If the equipment is damaged, notify the supplier and the carrier in writing within three
days; state the item number of the product together with the order number and the
supplier’s invoice number. Retain all packing material for inspection.
If the equipment is not used immediately, replace the protective covers. Store the
equipment in suitable conditions.
Intended use
☞The device is designed for ambient and gas temperatures at the pressure trans-
ducer connection of +10°C to +40°C at continuous operation, up to +80°C for
short periods (< 5 minutes) at the pressure transducer. If installing the device into
a cabinet or a housing check maximum temperature. Ensure that the maximum
permitted gas temperature at the pressure transducer (see ”Technical data”) is
not exceeded.
Use the equipment and all system parts for the intended use only, i.e. for measure-
ment of vacuum in vessels designed for that purpose.
Connecting the device
☞Avoid uncontrolled overpressure (e. g. when connecting to a locked or blocked
tubing system). Risk of bursting.
☞Comply with max. permitted ambient and gas temperature (see ”Technical
data”) and make sure ventilation is adequate if the equipment is installed in a
housing or if ambient temperature is elevated.
☞ Power supply by an internal 9V battery.
Do not charge the battery. Do not open the battery. Do not throw the battery into
re. Do not heat over 100°C and do not bring in contact with water.
• Comply with maximum permissible pressures at the pressure transducer. See
section ”Technical data”.
• Connect hoses gas tight at the pressure transducer connection.
• Ensure the stability of hose connections.
• In case of residues or aggressive or condensable media install a gas washing
bottle if necessary.
Avoid high heat supply (e.g., due to hot process gases).
Connect the vacuum gauge to the vacuum application.
Position the vacuum gauge and its vacuum line in such a way that condensate can-
not ow towards the internal pressure transducer.
NOTICE
NOTICE
NOTICE

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Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Allow the equipment to equilibrate to ambient temperature if you bring it from cold
environment into a room prior to operation. Notice if there is water condensation on
cold surfaces.
Comply with all applicable and relevant safety requirements (regulations and guide-
lines). Implement the required actions and adopt suitable safety measures.
The battery is free from mercury and cadmium.
Recommended type of battery see section ”Technical data”.
When replacing the battery, always mind its correct orientation when inserting it into
the battery compartment.
When using a battery of a different chemical system (e. g. alkaline), lifetime may be
considerably shorter.
Because of their lower capacity, the use of rechargeable batteries is not recom-
mended.
Operating conditions
➨The devices are not suitable for applications which involve dangerous or ex-
plosive gases or explosive or ammable mixtures.
• Ensure that the materials of the equipment’s wetted parts are compatible with the
substances in the vacuum system, see section ”Technical data”.
Safety during operation
➨Adopt suitable measures to prevent the release of dangerous, toxic, explosive,
corrosive, noxious or polluting uids, vapours and gases.
☞ Prevent any part of the human body from coming in contact with the vacuum.
☞Attention: If the pressure is higher than approximately 1060 mbar the pressure
reading becomes incorrect (saturation of the pressure transducer). The display
ashes. Immediate pressure relief necessary! Risk of bursting!
☞Use only genuine spare parts and accessories. Otherwise safety and perfor-
mance of the equipment as well as the electromagnetic compatibility of the equip-
ment might be reduced.
Possibly the CE mark becomes void if not using OEM spare parts.
Electronic equipment is never 100% fail-safe. This may lead to an ill-dened sta-
tus of the equipment or of other connected devices. Provide protective measures
against malfunction and failure. Ensure that in case of failure the device and the
vacuum system always will turn into a safe status.
Maintenance and repair
➨ Attention: Due to the operation the equipment might be contaminated by harmful
or dangerous substances, clean or decontaminate prior to maintenance.
NOTICE

page 6 of 17
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Ensure that maintenance is done only by suitably trained and supervised techni-
cians.
Interior components of the device can only be repaired at the factory.
Returned products will not be repaired or calibrated until the completed health and
safety clearance form has been received. In order to comply with law (occupational,
health and safety regulations, safety at work law and regulations for environmental
protection) vacuum pumps, components and measuring instruments returned to the
manufacturer can be repaired only when certain procedures (see section ”Notes on
return to the factory”) are followed.
NOTICE

page 7 of 17
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Technical data
Type DVR 2
Measuring principle capacitive, absolute pressure,
gas type independent
Pressure transducer ceramic diaphragm (alumina),
Pressure reading analogue and digital LCD display
Pressure units mbar, Torr or hPa (selectable)
Measuring cycle automatic, once in 3s, once in 1s, three times in
1s (factory-set: automatic)
Automatic sleep mode operation time: 1-1000 minutes or continuous
operation (”On”), (factory-set: 15 minutes)
Measuring range (absolute) 1080 mbar - 1 mbar (810 Torr - 1 Torr)
Maximum permissible pressure at pressure
transducer 1.5 bar absolute
Measurement uncertainty (absolute) after careful
adjustment and at constant temperature
<±1 mbar (0.75 Torr) /
±1 digit
Temperature coefcient <±0.07 mbar/K (0.05 Torr/K)
Maximum permissible temperature of gaseous
media at pressure transducer
continuous operation: 40°C,
for short periods (< 5 minutes): up to 80°C
Ambient temperature range (operation) 10°C to +40°C
Ambient temperature range (storage) -10°C to +60°C
Permitted relative atmospheric moisture during
operation (no condensation) 30% to 85%
Degree of protection according to IEC 529 IP 40
Vacuum connection small ange KF DN 16 and screw-in hose nozzle
DN 6/10 mm
Power supply battery 9V Lithium, 1.2 Ah, Ultralife U 9VL
Internal volume of measurement chamber 4.23 cm3(without hose nozzle)
Weight approx. 375 g
Dimensions L x W x H 115 mm x 115 mm x 66 mm
Wetted parts
Components Wetted materials
Sensor Aluminium oxide ceramic
Sensor housing stainless steel
Seals chemically resistant uoroelastomer
Vacuum connection / hose nozzle PBT / PPS glass bre reinforced
We reserve the right for technical modication without prior notice!

page 8 of 17
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Use and operation
Changing the pressure unit
➨ Select the desired pressure unit with the ” UP / DOWN” key.
➨ Switch the vacuum gauge off.
➨ Press ”MODE” key and keep it pressed while switching the
DVR 2 on (”ON/OFF” key).
☞The pressure unit as of the last operation (Torr, mbar or
hPa) is displayed.
➨ Press ”ON/OFF” key to conrm the selected pressure unit
and to terminate the mode.
Display
pressure units, selectable
adjustment mode/
warning symbol automatic sleep mode
replace battery/
display of battery capacity
ON/OFF key
UP/DOWN key
MODE key
Keys
The keys are on the rear side
of the device underneath the
symbols at the front side.
Torr
+
mbar

page 9 of 17
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
Adjusting the operating time and the measuring cycle
➨ Press ”MODE” key to select the time setting mode.
☞The clock symbol and the currently set operating time in
minutes are displayed.
To decrease the operating time:
➨ Press ”MODE” key to change the arrow to the left.
➨ Press ”UP/DOWN” key to decrease the operating time.
➨ Press ”ON/OFF” key to conrm.
☞The device switches to the mode ”Adjusting the measur-
ing cycle”.
☞The measuring cycle can be set to Automatic, 1 meas-
urement in 3s, 1 measurement in 1s and 3 measurements
in 1s.
☞The arrow to the right indicates that the time can be in-
creased using ”UP/DOWN” key.
➨ Press ”UP/DOWN” key to increase operating time.
☞The measuring cycle as of the last operation (factory-set:
”A”) is displayed.
➨ Press ”UP/DOWN” key to select the measuring cycle: A
= Automatic (automatic determination of the measuring
cycle; frequent measurement in case of great pressure
change), S1 = 1 measurement in 3s, S2 = 1 measurement
in 1s, S3 = 3 measurements in 1s.
☞ The ashing of the arrow (only ”S1”, ”S2” or ”S3”) symbol-
izes the frequency of the pressure measurement).
☞ Press ”MODE” key to change the direction of the adjust-
ment.
Adjusting the measuring cycle:
☞The vacuum gauge is equipped with an automatic sleep
mode to save battery power when the instrument is not
used. When the clock symbol appears on the display, the
vacuum gauge will switch off automatically after approx. 1
minute.
➨ Press ”ON/OFF” key. The clock symbol will disappear and
the preselected operation time will start again.
Clock symbol
☞The time until automatic switching off (operating time) can be set by the user within a range from
1 to 1000 minutes (factory-set: 15 minutes) or continuous operation ”On” can be selected.
Upon switching on, the absolute pressure (total pressure, in-
dependent of gas type) ranging from 1 mbar to 1080 mbar is
displayed in the selected pressure unit (Torr, mbar or hPa).
☞The pressure transducer was adjusted using factory stand-
ards. In general, there is no need for readjustment by the
user because of the excellent longtime stability (see sec-
tion ”Readjustment”).
Pressure measurement

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Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999001 / 04/04/2012
➨ Press ”ON/OFF” key to conrm the measuring cycle and to
terminate the mode.
When switching off the device, the remaining battery capac-
ity is displayed qualitatively by the number of arrows in the
display.
☞If the battery symbol appears in the display during meas-
urement, the battery should be replaced.
☞The correct operation of the device is no longer ensured.
Display of the battery‘s discharge status
Troubleshooting
Fault Possible cause Remedy
❑No display or display
disappears.
➨Automatic sleep mode? ✔Switch on, increase opera-
ting time if necessary.
➨Battery at? ✔Replace battery.
➨Other cause? ✔Contact local distributor.
❑Incorrect pressure read-
ing.
➨Pressure transducer not cor-
rectly adjusted?
✔Readjust pressure trans-
ducer.
➨Moisture in the pressure
transducer?
✔Dry or evacuate the pressure
transducer and readjust if
necessary.
➨Battery at, battery symbol is
displayed?
✔Replace battery.
❑Display is ickering and/
or battery symbol ap-
pears.
➨Battery at? ✔Replace battery.
❑Adjustment mode cannot
be activated.
➨At the applied pressure, read-
justment is not possible.
✔Admit air to atmospheric
pressure or evacuate to a
pressure below 20 mbar.
❑All segments of the LCD
are displayed or no dis-
play although battery has
been replaced.
➨Pressure transducer or meas-
uring electronics defective?
✔Contact local distributor.