Kracht VC 0.025-16 User manual

Gear type flow meter VC 0.025 - 16
English
17 • 14/06/2023
D.0025420002
Operating instructions (Translation)

Table of content Kracht GmbH
ii 88025420002-17
Table of content
1 General ........................................................................................................................................ 4
1.1 About the documentation............................................................................................................................ 4
1.2 Manufacturer address .................................................................................................................................... 4
1.3 Other applicable documents....................................................................................................................... 4
1.4 Symbols................................................................................................................................................................ 5
2 Safety........................................................................................................................................... 6
2.1 Intended use ...................................................................................................................................................... 6
2.2 Personal qualification..................................................................................................................................... 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............................................................................................................................. 14
4.1 General................................................................................................................................................................. 14
4.2 Nominal sizes..................................................................................................................................................... 15
4.3 Connection sizes............................................................................................................................................... 15
4.4 Flow resistance ∆p........................................................................................................................................... 17
4.4.1 Ball bearing version ..................................................................................................................... 17
4.4.2 Plain bearing version................................................................................................................... 19
4.5 Operating pressure.......................................................................................................................................... 21
4.6 Permissible temperature range .................................................................................................................. 22
4.7 Material data...................................................................................................................................................... 23
4.8 Weight.................................................................................................................................................................. 23
4.9 Dimensions......................................................................................................................................................... 24
5 Transport and storage ............................................................................................................... 25
5.1 General................................................................................................................................................................. 25
5.2 Transport............................................................................................................................................................. 25
5.3 Storage................................................................................................................................................................. 25
5.4 Storage conditions .......................................................................................................................................... 26
6 Installation .................................................................................................................................. 27
6.1 Safety instructions for installation............................................................................................................. 27
6.2 Mechanical installation .................................................................................................................................. 29
6.2.1 Preparation...................................................................................................................................... 29
6.2.2 Plate connection ........................................................................................................................... 29
6.2.3 pipe connection ............................................................................................................................ 31

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6.3 Electrical connection....................................................................................................................................... 31
6.3.1 Preamplifier (S, H, K).................................................................................................................... 31
6.3.2 IO-Link............................................................................................................................................... 33
7 Commissioning........................................................................................................................... 40
7.1 Safety instructions for start-up................................................................................................................... 40
7.2 Preparation......................................................................................................................................................... 40
7.3 Additional commissioning............................................................................................................................ 41
8 Removal....................................................................................................................................... 42
8.1 Safety instructions for disassembly........................................................................................................... 42
8.2 Dismantling ........................................................................................................................................................ 43
9 Maintenance ............................................................................................................................... 44
9.1 Safety instructions for maintenance......................................................................................................... 44
9.2 Maintenance work ........................................................................................................................................... 45
9.2.1 Cleaning - deposits in the measuring device .................................................................... 45
9.3 Maintenance instructions.............................................................................................................................. 46
9.4 Maintenance table........................................................................................................................................... 47
9.4.1 Maintenance table........................................................................................................................ 47
9.4.2 Check the rate of flow................................................................................................................. 47
9.4.3 Check the operating pressure.................................................................................................. 48
9.4.4 Check the media temperature................................................................................................. 48
9.4.5 Check the device temperature ................................................................................................ 48
9.4.6 Check the equipotential bonding .......................................................................................... 48
9.4.7 Check the condition of the operating fluid........................................................................ 48
9.4.8 Auditory check Unusual noises ............................................................................................... 48
9.4.9 Cleaning ........................................................................................................................................... 48
9.4.10 Visual inspection for leakage................................................................................................... 48
9.4.11 Visual check of the condition of the measuring element............................................. 48
9.4.12 Visual check of the condition of housing parts ................................................................ 49
9.4.13 Visual check of the condition of the bearings................................................................... 49
9.4.14 Replacing other seals.................................................................................................................. 49
9.4.15 Cleaning to remove deposits in the measuring device ................................................. 49
10 Repair .......................................................................................................................................... 50
10.1 Safety instructions for repairs ..................................................................................................................... 50
10.2 General................................................................................................................................................................. 51
10.3 Fault table ........................................................................................................................................................... 52

1 | General Kracht GmbH
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1 General
1.1 About the documentation
These operating instructions describe the installation, operation and maintenance of the follow-
ing product:
Gear type flow meters VC 0.025 -16
These operating instructions are an integral part of the product and must be kept in the imme-
diate vicinity of the
product and accessible to the personnel at all time.
Different versions of the product are produced. Which version is concerned
is stated on the device’s type plate.
If you have any questions about this operating manual, please contact the manufacturer.
1.2 Manufacturer address
KRACHT GmbH
Gewerbestraße 20
D-58791 Werdohl
Tel: [phone]
Fax: [phone]
Email: [email protected]
Web: www.kracht.eu
1.3 Other applicable documents
In addition to these instructions, also comply with the relevant instructions of plants or plant
parts available or planned on site.

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1.4 Symbols
DANGER
Identification of an immediate hazard, which can lead to death or severe bodily injury if not
avoided.
WARNING
Identification of a potential medium risk hazard, which can lead to death or severe bodily injury
if not avoided.
CAUTION
Identification of a possible low-risk hazard that can result in minor or moderate physical injury if
not avoided.
ATTENTION
Identification of notes to prevent property damage.
NOTICE
Identification of basic safety instructions. Non-compliance can lead to hazards for people and
the product
TIP
Identification of special user tips and other particularly useful or important information

2 | Safety Kracht GmbH
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2 Safety
2.1 Intended use
1. The product has been designed for operation with fluids.
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 re-
acting 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 Personal qualification
The personnel charged with the assembly, operation and maintenance of the product must have
the necessary qualifications.
This can be achieved through training or appropriate instruction.
The personnel must be familiar with the contents of these operating instructions.
NOTICE
Read the operating instructions in full before using the product.

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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 internal
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 unrecognisable.
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 en-
vironment.
DANGER
Rotating parts
Risk to life due to entanglement or winding of parts of the body, hair or clothing items.
a) Before carrying out any work, disconnect any drives and actuators from the power supply
or depressurise them.
b) Safely prevent restarting during the 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 elec-
trical 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
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DANGER
Rotating parts
Risk to life due to entanglement or winding of parts of the body, hair or clothing items.
a) Take measures to prevent accidental touching of rotating parts.
WARNING
Rotating parts
Risk of injury caused by ejected parts
a) Enclose rotating parts so that in the event of fracture or malfunction, there is no risk caused
by ejected parts.
WARNING
Failure of pressure bearing parts due to overload
Risk of injury from flying parts.
Risk of injury due to splashing fluids.
a) Before carrying out any work, depressurise the product and all connection pipes.
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 splashing fluids.
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 re-
lief 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.
ATTENTION
Pressure increase due to blocked measuring unit
Pressure increase in front of the unit can lead to damage to the unit and/or plant.
a) In case of the absence of the signal, take the unit or the plant out of service.

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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 without contact in the measuring chamber. The bearing elements are low friction
ball bearings or plain bearings.
The gear movement is scanned contact-free by the sensors in the cover. There is a pressure-res-
istant amagnetic separator between the sensor space and the measuring chamber.
When the measuring element turns by one tooth pitch, each sensor generates a signal that cor-
responds to the so-called geometric tooth volume Vgz. A value stated in technical documents as
the nominal volume to identify the device size.
This signal is transmitted from the preamplifier to the evaluation electronics as a rectangular
pulse or according to the IO link protocol (IO link mode - process data; SIO mode - rectangular
pulse).
The dual-channel scanning enables higher measured value resolution and detection of the dir-
ection of flow.
In the gear-type flowmeter, the driving direction of the fluid flow is independent of the direction

3 | Device description Kracht GmbH
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3.2 Basic design
Gear type flow meters
1 Cover 6 Housing
2 A-magnetic divider 7 Measuring unit
3 Sensor 8 Bearing journal
4 Equipment plug/socket 9 Bearing
5 O-ring

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3.3 Type key
Ordering example
VC 1 K 1 F 1 P 2 S H
1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
Explanation of type key
1. Product name
2. Nominal ( Rated volume)
Vgz 0.025; 0.04; 0.1; 0.2; 0.4; 1; 3; 5; 12; 16
3. Bearing
KBall bearing CBall bearing (Increased clearance)
HHybrid - Ball bearing GCarbide - Plain bearings
4. Materials
1Housing: EN-GJS-400-15
Gears: Steel (St) 3Housing: EN-GJS-600 Gears: Steel (St)
2Housing: Stainless steel
Gears: Stainless steel 4Housing: Aluminium (Al) Gears: Stainless steel (Nominal 0,2)
5. Seal type
FFKM KFFKM
EEPDM QFVMQ
PFEP
6. Surface
1Standard (painted) 3Without
2Paint Skydrol resistant
7. Type of connection
PPlate structure RPipe connection
8. Sensor system
22 Sensors 42Sensors protected against vibration and
condensation
11 Sensor 5Encoder
3Without Sensor system
9. Version of the sensor system
SStandard KX ATEX High temperature PLUS
HHigh temperature RRed. supply voltage
KHigh temperature PLUS LIO-Link
TLow temperature VWithout Pre amplifier
XATEX EEncoder
10. Cable length
No spe-
cification Without cable 5With 5 m cable
2With 2 m cable 10 With 10 m cable

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Explanation of type key
11. Electrical connection
HHirschmann plug (Standard) E
Aluminium (Al) - terminal box
(M12x1)
ext. electronics decoupeable
MHirschmann plug
(M12x1/-4 pole) VWithout
KAluminium (Al) - terminal box
(M12x1/-4 pole) 512 Encoder 512 lmp/U (M12x1/-4 pole)
CAluminium (Al) - terminal box
(Cannon- plug) 2500 Encoder 2500 Imp/U (M12x1/-4 pole)
3.4 Special numbers
Special number Description
68 terminal box M12x1
Turck connector
87 Version for high-viscosity and poorly lubricating media
(VC 0.4)
101 Housing and fastening screws: with corrosion-resistant coating
112
Version without Hirschmann connector and preamplifier
Plug base rotated by 90°
+ Special number 101
(VC 1)
124 Noise-optimised version
126
Hirschmann connector
Preamplifer VV12, potted
Sensors protected with protective paint
166 Coated gears
169 Terminal box and flowmeter seals: silicone
192 Anodised housing and bearing cap
211
Particularly small design
Reduced operating pressure: max. 50 bar
High temperature up to 180 °C
Housing connection: G 1/4
(VC 0.025)
220 Special number 169
Potted sensors and terminal box
222 Special number 209
Cable outlet, top

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Special number Description
223 Special number 220
Modified PIN assignment
224 For booster systems

4 | Technical data Kracht GmbH
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4 Technical data
4.1 General
General information
Design Gear motor
Housing connection (1) Plate structure / Pipe thread
Mounting position Any
Flow direction Any
Viscosity ν … 2.500.000 mm²/s
… 5.000 mm²/s (Special number 224)
Operating pressure p Operating pressure [}21]
Permissible pressure loss ∆pmax. 16 bar
Fluid temperature ϑmPermissible temperature range [}22]
Ambient temperature ϑu
Materials Material data [}23]
Measuring accuracy
General [}14]
Permissible size of foreign particles in the
medium
Permissible media
Lubricating and poorly lubricating
Fluids within the scope of the specified
Betriebsparameter (operating parameters (if in
doubt, consult
the manufacturer.)
(1) Connection sizes [}15]
Bearing Linearized measuring ac-
curacy
Permissible size of foreign
particles in the medium
[μm]
Ball bearing ± 0.3%
from 20 mm²/s
20
50 ( Special number 224)
Ball bearing ( Increased
clearance)
± 0.5%
from 50 mm²/s 30
Hybrid - Ball bearing ± 1%
from 20 mm²/s 20
Carbide - Ball bearing ± 0.5%
from 100 mm²/s 30
Bronze - Ball bearing ± 1%
from 100 mm²/s 50

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4.2 Nominal sizes
Nominal Measuring range [l/min]
Bearing
Ball bear-
ing
Ball bearing
(Increased clear-
ance)
Hybrid - Ball
bearing
Carbide - Ball
bearing
Bronze - Ball
bearing
0.025 0.008 - 2 - 0.008 – 2 0.02 – 2(1) -
0.04 0.02 – 4 - 0.02 – 4 - -
0.1 0.04 - 8 - 0.04 – 8 0.04 - 8 -
0.2 0.16 - 16 0.16 – 16 0.16 – 16 0.16 - 16 -
0.4 0.2 - 40 - - 0.2 - 30 -
10.4 – 80 0.4 – 80 0.4 – 80 0.3 - 60 0.6 - 40
30.6 – 160 0.6 – 160 - 0.6 - 100 -
5(2) 1 – 250 1 – 250 - 1 - 160 1.2 - 80
12 2 – 600 - - - -
16 3 - 700 - - - -
(1) Linearized measuring accuracy ± 3 %; Repeatability ± 1.5 %
(2) VC 5 …/224: Measuring range 1 – 160 [l/min]; Linearized measuring accuracy ± 0.5 % from ≥
50 mm²/s; Repeatability ± 0.05 %
4.3 Connection sizes
Nominal Special number Type of connection (1)
R
(Pipe connec-
tion)
P (Plate structure)
With connection plate Without connection
plate
0.025 - G 1/8
MVC .. R. B.
G 3/8
See “Technical data
sheets”
MVC .. R. C.
G 1/2
0.04 - G 1/4
MVC .. R. B.
G 3/8
MVC .. R. C.
G 1/2
0.1 - G 3/8
MVC … R. B.
G 3/8
MVC .. R. C.
G 1/2
0.2 - G 3/8
MVC … R. B.
G 3/8
MVC .. R. C.
G 1/2

4 | Technical data Kracht GmbH
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Nominal Special number Type of connection (1)
R
(Pipe connec-
tion)
P (Plate structure)
With connection plate Without connection
plate
0.4 - G 1/2
MVC .. R. C.
G 1/2
MVC .. R. D.
G 3/4
1- G 1/2
MVC .. R. C.
G 1/2
MVC .. R. D.
G 3/4
MVC .. R. E.
G 1
3G 1 MVC .. R. E.
G 1
MVC .. R. G.
G 1 1/2
MVC .. V. E.
SAE 1“ – 6000 psi
5- G1
MVC .. R. E.
G 1
MVC .. R. G.
G 1 1/2
MVC .. V. E.
SAE 1“ – 6000 psi
MVC .. V. F.
SAE 1 1/4“ – 6000 psi
224 SAE 1“ – 3000 psi -
12 - - MVC .. V. G.
SAE 1 1/2“ – 6000 psi
16 - - MVC .. V. G.
SAE 1 1/2“ – 6000 psi
(1) Pipe thread : EN ISO 228-1; Flange connection : ISO 6162-1 (SAE J518)

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4.4 Flow resistance ∆p
4.4.1 Ball bearing version
VC 0.025
VC 0.04
VC 0.1
VC 0.2

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VC 0.4
VC 1
VC 3
VC 5

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88025420002-17 19
VC 12
VC 16
4.4.2 Plain bearing version
VC 0.025
VC 0.1

4 | Technical data Kracht GmbH
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VC 0.2
VC 0.4
VC 1
VC 3