Kracht VCA 0.04 Bedienungsanleitung
Gear-type flow meter VCA/VCN/VCG
English
11 • 18/08/2021
Operating instructions (Translation)
Table of content Kracht GmbH
ii 88025530002-11
Table of content
1 General ................................................................................................................................................................4
1.1 About the documentation ....................................................................................................................................................... 4
1.2 Manufacturer address................................................................................................................................................................ 4
1.3 Symbols........................................................................................................................................................................................... 5
2 Safety...................................................................................................................................................................6
2.1 Intended use.................................................................................................................................................................................. 6
2.2 Personnel qualification and training.................................................................................................................................... 6
2.3 Basic safety instructions............................................................................................................................................................ 7
2.4 Fundamental hazards.................................................................................................................................................................7
3 Device description.............................................................................................................................................. 9
3.1 Functional principle .................................................................................................................................................................... 9
3.2 Basic design.................................................................................................................................................................................10
3.3 Type key ........................................................................................................................................................................................11
3.4 Special numbers.........................................................................................................................................................................12
4 Technical data...................................................................................................................................................13
4.1 General ..........................................................................................................................................................................................13
4.2 Overview nominal sizes...........................................................................................................................................................14
4.3 Permissible temperature range............................................................................................................................................15
4.4 Material data ...............................................................................................................................................................................15
4.5 Weight ...........................................................................................................................................................................................16
4.6 Dimensions ..................................................................................................................................................................................16
5 Transport and storage .....................................................................................................................................17
5.1 General ..........................................................................................................................................................................................17
5.2 Transport.......................................................................................................................................................................................17
5.3 Storage ..........................................................................................................................................................................................17
5.4 Storage conditions....................................................................................................................................................................18
6 Installation ........................................................................................................................................................19
6.1 Important notes about explosion protection.................................................................................................................19
6.2 Mechanical installation............................................................................................................................................................20
6.2.1 Preparation....................................................................................................................................................................20
6.2.2 Plate connection ........................................................................................................................................................21
6.2.3 Pipe connection...........................................................................................................................................................23
6.3 Electrical connection ................................................................................................................................................................23
6.3.1 Preamplifier (S, H , K).................................................................................................................................................23
7 Operation start-up ...........................................................................................................................................25
7.1 Safety instructions for start-up ............................................................................................................................................25
7.2 Preparation...................................................................................................................................................................................25
7.3 Further operation start-up.....................................................................................................................................................25
Kracht GmbH Table of content
88025530002-11 iii
8 Removal.............................................................................................................................................................27
8.1 Safety instructions for removal ............................................................................................................................................27
8.2 Removal.........................................................................................................................................................................................28
9 Maintenance .....................................................................................................................................................29
9.1 Safety instructions for maintenance ..................................................................................................................................29
9.2 Maintenance work.....................................................................................................................................................................30
9.2.1 Cleaning - Desposits in the measuring device................................................................................................30
9.3 Maintenance instructions.......................................................................................................................................................31
9.4 Maintenance table ....................................................................................................................................................................32
9.4.1 Maintenance table......................................................................................................................................................32
9.4.2 Inspection: Discharge flow ......................................................................................................................................33
9.4.3 Inspection: Operating pressure.............................................................................................................................33
9.4.4 Inspection: Media temperature ............................................................................................................................33
9.4.5 Inspection: Check the potential compensation (if existing)....................................................................... 33
9.4.6 Inspection: Condition of operating fluid ..........................................................................................................33
9.4.7 Audiometric monitoring: Unusual noise............................................................................................................33
9.4.8 Cleaning..........................................................................................................................................................................33
9.4.9 Visual inspection: Leakages ....................................................................................................................................33
9.4.10 Inspection: Device temperature ............................................................................................................................34
9.4.11 Visual inspection: Measuring unit status...........................................................................................................34
9.4.12 Visual inspection: Condition of housing parts.................................................................................................34
9.4.13 Visual inspection: Bearing status ..........................................................................................................................34
9.4.14 Replace: Other seals...................................................................................................................................................34
9.4.15 Cleaning Desposits in the measuring device...................................................................................................34
10 Repairs...............................................................................................................................................................35
10.1 Safety instructions for repair.................................................................................................................................................35
10.2 General ..........................................................................................................................................................................................36
10.3 Detecting and eliminating failures......................................................................................................................................37
1 | General Kracht GmbH
4 / 37 88025530002-11
1 General
1.1 About the documentation
These operating instructions describe the installation, operation and maintenance of the fol-
lowing device:
Gear type flow meter VCA / VCN / VCG
These operating instructions are a component of the device and must be kept accessible for
the personnel near the device at all times.
The device is manufactured in different versions. Information about the version concerned in
the individual case can be found on the device's type plate.
If you have any questions about these operating instructions, please contact the manufac-
turer.
1.2 Manufacturer address
KRACHT GmbH
Gewerbestraße 20
DE 58791 Werdohl
Tel: +49 2392 935-0
Fax: +49 2392 935-209
E-Mail: [email protected]
Web: www.kracht.eu
Kracht GmbH General | 1
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1.3 Symbols
DANGER
Identification of an immediate hazard, which would result in death or severe bodily injury if
not avoided.
WARNING
Identification of a potential medium risk hazard, which would lead to death or severe bodily
injury if not avoided.
CAUTION
Identification of a low risk hazard, which could lead to minor or medium bodily injury if not
avoided.
ATTENTION
Flagging of notices to prevent property damage.
NOTICE
Identification of basic safety instructions.
Non-compliance can lead to hazards for people and the device.
TIP
Flagging of special user tips and other especially useful or important information.
2 | Safety Kracht GmbH
6 / 37 88025530002-11
2 Safety
2.1 Intended use
1. The device has been designed for operation with fluid.
Dry operation is not permitted.
2. The product may only be operated when completely filled.
3. The fluid must be compatible with the materials used in the product. Chemical expertise
is required for that. Be careful with ethylene oxide or other catalytically or exothermically
reacting or self-decomposing substances. Please consult the manufacturer in cases of
doubt.
4. The product may only be used in normal industrial atmospheres.
If there are any aggressive substances in the air, always consult the manufacturer.
5. The product may only be operated in compliance with these operating instructions and
the applicable documents.
Deviating operating conditions require the express approval of the manufacturer.
6. Use of the product for purposes other than those for which it is intended invalidates any
warranty.
2.2 Personnel qualification and training
The personnel designated to assemble, operate and service the device must be properly
qualified.
This can be through training or specific instruction.
Personnel must be familiar with the contents of this operating instructions.
NOTICE
Read the operating instructions thoroughly before use.
Kracht GmbH Safety | 2
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2.3 Basic safety instructions
NOTICE
Basic safety instructions
Non-compliance can lead to hazards for people and the unit.
a) Follow existing regulations for accident prevention and safety at work as well as the in-
ternal regulations of the operating company.
b) Ensure the greatest possible cleanliness.
c) Wear suitable personal protective equipment.
d) Do not remove type plates or other information or make them illegible or unrecognis-
able.
e) Do not make any technical modifications.
f) Comply with maintenance intervals.
g) Only use spare parts approved by the manufacturer.
2.4 Fundamental hazards
DANGER
Hazardous fluids
Danger to life when handling hazardous fluids.
a) Comply with the safety data sheets and regulations on handling the hazardous fluids.
b) Collect and dispose of hazardous fluids so that no hazard is created for persons or the
environment.
DANGER
Rotating parts!
Danger of death due to body parts, hair or clothing getting trapped or entangled.
a) Before all work, ensure that existing drives are voltage-free and pressure-free.
b) Securely prevent restarting during all work.
DANGER
Exposed electrical components
Risk of fatal electric shock.
a) Adhere to the special safety regulations for all work on electrical systems.
Switch off electrical systems and secure them against being switched on again.
b) Work on electrical systems may only be carried out by a qualified electrician.
c) Use only connection lines that are resistant to ambient influences and media.
2 | Safety Kracht GmbH
8 / 37 88025530002-11
WARNING
Failure of pressure bearing parts due to overload
Risk of injury from flying parts.
Risk of injury due to splashing fluids.
a) Depressurize the system before all work.
b) Securely prevent the pressure from being restored during work.
WARNING
Failure of pressure bearing parts due to overload
Risk of injury from flying parts.
Risk of injury due to fluid spurting out.
a) Use only connections and lines approved for the expected pressure range.
b) Securely prevent the permissible pressures from being exceeded, e.g. by using pressure
relief valves or bursting discs.
c) Pipelines must be designed in such a way that no tension e.g. caused by changes in
length due to fluctuations in temperature can be transferred to the product.
Kracht GmbH Device description | 3
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3 Device description
3.1 Functional principle
The measuring unit is driven by the flow of fluid based on the principle of a gear motor.
The gears run in a contactless manner in the measuring chamber. The lowfriction bearings or
plain bearings act as the bearing elements.
The gear movement is sampled in a contactless manner through the sensors installed in the
cover. There is a pressure-resistant amagnetic division between the sensor space and meas-
uring chamber.
During the rotation of the measuring unit by one tooth pitch, a signal occurs per sensor that
corresponds to the so-called geometric tooth volume of Vgz. A value that is stated in tech-
nical documents as the nominal volume to specify the unit size.
The 1-channel scan measures the flow but does not recognise its direction.
The two-channel scanning facilitates a higher measuring resolution and detection of the dir-
ection of the flow rate.
In the gear type flow meter, the drive direction of the flow of fluid is independent of the dir-
ection.
3 | Device description Kracht GmbH
10 / 37 88025530002-11
3.2 Basic design
1 Cable socket 6 Housing
2 Equipment plug 7 Gears
3 Sensor 8 Plain bearing bush
4 Cover 9 Bearing journal
5 O-ring 10 O-ring
Andere Handbücher für VCA 0.04
1
Dieses Handbuch passt für folgende Modelle
8
Inhaltsverzeichnis
Andere Kracht Messgerät Handbücher
