All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without
the prior written authorisation of KROHNE Messtechnik GmbH.
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VA40 - VA45
1.1 Intended use
CAUTION!
Responsibility for the use of the measuring devices with regard to suitability, intended use and
corrosion resistance of the used materials against the measured fluid lies solely with the
operator.
INFORMATION!
This device is a Group 1, Class A device as specified within CISPR11:2009. It is intended for use in
industrial environment. There may be potential difficulties in ensuring electromagnetic
compatibility in other environments, due to conducted as well as radiated disturbances.
INFORMATION!
The manufacturer is not liable for any damage resulting from improper use or use for other than
the intended purpose.
The variable area flowmeters are suitable for measuring gases and liquids.
These devices are particularly suitable for measuring:
• Liquids
• Hydrocarbons
• Water
• Chemicals with low corrosiveness
• Industrial gases
SAFETY INSTRUCTIONS
1
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
CAUTION!
Do not use any abrasive or highly viscous media.
1.2 Certifications
CE marking
The flowmeter meets the statutory requirements of the following EC directives:
• Pressure Equipment Directive 97/23/EC
• EMC Directive 2004/108/EC for instruments with electrical options
• ATEX Directive 94/9/EC for instruments in Ex-areas
The manufacturer certifies successful testing of the product by applying the CE mark.
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SAFETY INSTRUCTIONS
1.3 Safety instructions from the manufacturer
1.3.1 Copyright and data protection
The contents of this document have been created with great care. Nevertheless, we provide no
guarantee that the contents are correct, complete or up-to-date.
The contents and works in this document are subject to copyright. Contributions from third
parties are identified as such. Reproduction, processing, dissemination and any type of use
beyond what is permitted under copyright requires written authorisation from the respective
author and/or the manufacturer.
The manufacturer tries always to observe the copyrights of others, and to draw on works created
in-house or works in the public domain.
The collection of personal data (such as names, street addresses or e-mail addresses) in the
manufacturer's documents is always on a voluntary basis whenever possible. Whenever
feasible, it is always possible to make use of the offerings and services without providing any
personal data.
VA40 - VA45
We draw your attention to the fact that data transmission over the Internet (e.g. when
communicating by e-mail) may involve gaps in security. It is not possible to protect such data
completely against access by third parties.
We hereby expressly prohibit the use of the contact data published as part of our duty to publish
an imprint for the purpose of sending us any advertising or informational materials that we have
not expressly requested.
1.3.2 Disclaimer
The manufacturer will not be liable for any damage of any kind by using its product, including,
but not limited to direct, indirect or incidental and consequential damages.
This disclaimer does not apply in case the manufacturer has acted on purpose or with gross
negligence. In the event any applicable law does not allow such limitations on implied warranties
or the exclusion of limitation of certain damages, you may, if such law applies to you, not be
subject to some or all of the above disclaimer, exclusions or limitations.
Any product purchased from the manufacturer is warranted in accordance with the relevant
product documentation and our Terms and Conditions of Sale.
The manufacturer reserves the right to alter the content of its documents, including this
disclaimer in any way, at any time, for any reason, without prior notification, and will not be liable
in any way for possible consequences of such changes.
1.3.3 Product liability and warranty
The operator shall bear responsibility for the suitability of the device for the specific purpose.
The manufacturer accepts no liability for the consequences of misuse by the operator. Improper
installation or operation of the devices (systems) will cause the warranty to be void. The
respective "Standard Terms and Conditions" which form the basis for the sales contract shall
also apply.
6
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VA40 - VA45
1.3.4 Information concerning the documentation
To prevent any injury to the user or damage to the device it is essential that you read the
information in this document and observe applicable national standards, safety requirements
and accident prevention regulations.
If this document is not in your native language and if you have any problems understanding the
text, we advise you to contact your local office for assistance. The manufacturer can not accept
responsibility for any damage or injury caused by misunderstanding of the information in this
document.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device. Special considerations and precautions are also described in the
document, which appear in the form of icons as shown below.
SAFETY INSTRUCTIONS
1
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SAFETY INSTRUCTIONS
1.3.5 Warnings and symbols used
Safety warnings are indicated by the following symbols.
DANGER!
This warning refers to the immediate danger when working with electricity.
DANGER!
This warning refers to the immediate danger of burns caused by heat or hot surfaces.
DANGER!
This warning refers to the immediate danger when using this device in a hazardous atmosphere.
DANGER!
These warnings must be observed without fail. Even partial disregard of this warning can lead to
serious health problems and even death. There is also the risk of seriously damaging the device
or parts of the operator's plant.
VA40 - VA45
WARNING!
Disregarding this safety warning, even if only in part, poses the risk of serious health problems.
There is also the risk of damaging the device or parts of the operator's plant.
CAUTION!
Disregarding these instructions can result in damage to the device or to parts of the operator's
plant.
INFORMATION!
These instructions contain important information for the handling of the device.
LEGAL NOTICE!
This note contains information on statutory directives and standards.
• HANDLING
HANDLING
HANDLINGHANDLING
This symbol designates all instructions for actions to be carried out by the operator in the
specified sequence.
iRESULT
RESULT
RESULTRESULT
This symbol refers to all important consequences of the previous actions.
1.4 Safety instructions for the operator
WARNING!
In general, devices from the manufacturer may only be installed, commissioned, operated and
maintained by properly trained and authorized personnel.
This document is provided to help you establish operating conditions, which will permit safe and
efficient use of this device.
8
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2.1 Scope of delivery
INFORMATION!
Inspect the packaging carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
DEVICE DESCRIPTION
2
Figure 2-1: Scope of delivery
1 Flowmeter in the version ordered
2 Manual
3 Certificates, calibration report (supplied to order only)
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DEVICE DESCRIPTION
2.2 Device version
• VA40V or VA45V - Screw version
• VA40S or VA45S - Tube socket
• VA40F or VA45F - Flange version
• VA40A - Aseptic version
Optional versions:
• VA40 with max. two limit switches, NAMUR
• VA40 with potential-free Reed contact
2.2.1 Device version VA40
VA40 - VA45
Figure 2-2: Device versions VA40
1 VA40V - Screw version
2 VA40S - Tube socket
3 VA40F - Flange version
4 VA40A - Aseptic version
2.2.2 Device version VA45
Figure 2-3: Device versions VA45
1 VA45V - Screw version
2 VA45S - Tube socket
3 VA45F - Flange version
10
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2.3 Nameplate
INFORMATION!
Before installing the device, make sure that the information on the nameplate corresponds to
the ordering data.
DEVICE DESCRIPTION
2
1 Type of meter
2 Manufacturer
3 Website
4 Appointed ATEX body
5 Pay regard to manual
6 Ex-data
7 Serial number
8 Year of manufacture
9 PED-data
10 Design data: Temperature & pressure rating
Additional markings on the indicator
• SN - serial number
• SO - sales order / item
• Tag-No. - customer spec.
• MD - year of manufacture
• PA - KROHNE order
• Vx - product configurator code
• AC - article code
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DEVICE DESCRIPTION
2.4 Description code
Description code VA40
The description code consists of the following elements*:
1 Type of connection
V - Screw connection
S - Tube socket
F - Flange connection
A - Aseptic connection, conforming to food standards
2 Material of the connection
R - Stainless steel 1.4404 (316 L)
ST - Steel, electroplated and chromized
PV - Platics PVDF
VA40 - VA45
3 Limit switches
K1 - one limit switch
K2 - two limit switches
* Places for items not needed may be omitted from the description code
Description code VA45
The description code consists of the following elements:
1 Type of connection
V - Screw connection
S - Tube socket
F - Flange connection
2 Material of the connection
R - Stainless steel 1.4404 (316 L)
ST - Steel, electroplated and chromized
PV - Platics PVDF
12
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3.1 General notes on installation
INFORMATION!
Inspect the packaging carefully for damages or signs of rough handling. Report damage to the
carrier and to the local office of the manufacturer.
INFORMATION!
Do a check of the packing list to make sure that you have all the elements given in the order.
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
3.2 Storage
• Store the flowmeter in a dry and dust-free location.
• Avoid lasting direct exposure to the sun.
• Store the flowmeter in its original packaging.
• The permissible storage temperature is from -40...+80°C / -40...176°F for standard meters.
INSTALLATION
3
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INSTALLATION
3.3 Installation condtitions
CAUTION!
When installing the device in the piping, the following points must be observed:
•
The variable area flowmeter must be installed vertically (measuring principle). Flow direction
from bottom to top. For installation recommendations please refer also to VDI/VDE 3513
Sheet 3.
•
Before connecting, blow or flush out the pipes leading to the device.
•
Pipes for gas flow need to be dried before the device is installed.
•
Use connectors suitable for the particular device version.
•
Align the pipes centrically with the connection bores on the measuring device so they are free
of stresses.
•
If necessary, support the pipeline to reduce vibrations being transmitted to the measuring
device.
•
Do not lay signal cables directly next to cables for the power supply.
VA40 - VA45
3.4 Transport locks
Plastic rods are fitted as transport locks to protect the float during transportation. These need to
be removed before start-up:
• FFFF - Flange version DN15/DN25
Remove yellow plastic cap from upper flange and remove fixing rod from the glass.
• FFFF - Flange version DN40/DN50
Cut through the cable tie and remove cap. Remove fixing rod from the glass.
• VVVV - Screw version
Unscrew union nut and remove yellow plastic cap from the screw connection.Remove fixing
rod. When assembling the meter, tighten the union nuts with strap wrench. Make sure the Oring is positioned correctly!
• SSSS - Tube socket
Unscrew union nut and remove yellow plastic cap from the screw connection.Remove fixing
rod. When assembling the meter, tighten the union nuts with strap wrench. Make sure the Oring is positioned correctly!
• AAAA - Aseptic
the same as tube socket
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4.1 Safety instructions
DANGER!
All work on the electrical connections may only be carried out with the power disconnected. Take
note of the voltage data on the nameplate!
DANGER!
Observe the national regulations for electrical installations!
DANGER!
For devices used in hazardous areas, additional safety notes apply; please refer to the Ex
documentation.
WARNING!
Observe without fail the local occupational health and safety regulations. Any work done on the
electrical components of the measuring device may only be carried out by properly trained
specialists.
ELECTRICAL CONNECTIONS
4
INFORMATION!
Look at the device nameplate to ensure that the device is delivered according to your order.
Check for the correct supply voltage printed on the nameplate.
4.2 VA40 limit switches
The flowmeter VA40 can be equipped with a maximum of two limit switches:
Type bistable (stable changeover from NC to NO contact and vice versa)
Type monostable (switching pulse at operating point)
Figure 4-1: Types of limit switches
1 Ring type limit switch
2 MS 14/I - potential-free Reed contact
3 TG21 - with integrated slot sensor
Operation and Technical data of the limit switches see Technical data.
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ELECTRICAL CONNECTIONS
4.2.1 Connection ring type limit switch
The connecting cables of the limit switch are guided through the long slot on the back.
Figure 4-2: Connection of the limit switch type NAMUR
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VA40 - VA45
4.2.3 Connection limit switch type TG21
Figure 4-4: Connection limit switch type TG21
1 Terminal -
2 Terminal +
The type TG21 is adapted to switch amplifiers for intrinsical safe circuits in accordance to EN
60947-5-6 NAMUR.
ELECTRICAL CONNECTIONS
4
The TG21 includes an inductive slot sensor with bistable switching performance.
The slot sensor is actuated by the dipping action of an aluminium vane. The magnet on the
dipping vane is moved by the magnet in the float and follows its movement. A magnet float is
required.
4.3 Limit switch settings
4.3.1 Setting ring type limit switch
• Untighten plastic screw 1 and move limit switch to desired operating point 2.
• Only slightly tighten screw 1! (Risk of breaking the glass)
The operating point is, as shown, at approx. half height of the ring 2.
The exact operating point is also dependent on the size of the used float!
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ELECTRICAL CONNECTIONS
4.3.2 Limit switch settings MS14
• Untighten bracket screw 1 and set switching position
• Secure bracket screw 1
The distance between the limit switch and the casing is factory set with clamp screw 2 so that
the limit switch touches the glass taper at the maximum switching point.
The limit switch must be rotated 180° to reach the lower range of the scale.
VA40 - VA45
4.3.3 Limit switch settings TG21
• Untighten bracket screw 1 and set switching position
• Secure bracket screw 1
The distance between the limit switch and the casing is factory set at approx. 1 mm (0.039") with
the clamping screw 2.
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ELECTRICAL CONNECTIONS
4.4 Minimum clearance between two ring initiators
Where two limit switches are in one device, and also where devices with ring limit switch are
arranged close together, minimum clearances must be maintained in order to avoid mutual
influence of the switches.
Minimum clearance2-wire NAMUR3-wire transistor
116 mm0,63"45 mm1,77"
4
4.5 Switching performance ring-type limit switch
Limit switch 2-wire NAMUR monostable
Float outside limit switch: signal ≥3 mA
Float inside limit switch: signal ≤1 mA
Limit switch 2-wire NAMUR bistable
Independent of float position like transit 1: signal ≥3 mA
Precondition: The float is located outside the limit switch.
Limit switch 3-wire transistor bistable
ndependent of float position like transit 2: output Ua ≤1 VDC
Precondition: The float is located outside the limit switch.
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ELECTRICAL CONNECTIONS
4.6 Limit switch function reversal
4.6.1 Conversion of the function of ring type limit switch
Bistable ring type limit switches can be changed over from NO to NC.
• Remove upper device connection
• Unscrew upper union nut
• Lift up and remove connection very carefully.On depending adhesion of the upper sealing ring,
the connection may take the measuring glass with it!
• Untighten plastic screw 1 on ring limit switch
• Carefully take the measuring glass out of the housing and the sensor. The ring limit switch
remains in the housing. Avoid CANTING (glass breakage!)
• Turn limit switch through 180°
• Assemble in reverse order. Make sure sealing ring is seated correctly!
VA40 - VA45
4.6.2 Conversion of the function of limit switch MS14
Two contact functions are available:
• Closing, at increasing flow. Arrow on reed cartridge points towards measuring glass.
• Closing, at decreasing flow. Arrow on reed cartridge points away from measuring glass.
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ELECTRICAL CONNECTIONS
4.6.3 Conversion of the function of limit switch TG21
The contact function can be changed over from NO to NC by shifting the position of the slot
sensor 3.
After untightening the screw 6 , the slot sensor 3 can be shifted to the other end position.
If vibrations could cause an unintential switching, use the grub screw 5 to adjust the force of
the frictional connection between adjusting magnet and counter-magnet 4 on the dipping vane
2.
The switching reproducibility is < 3% of the full-scale range and is influenced by the force of the
frictional connection!
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5
START-UP
5.1 Standard device
CAUTION!
When starting up the device, the following points must be observed:
•
Compare the actual operating pressure and the product temperature of the system with the
specifications on the nameplate (PS and TS). These specifications may not be exceeded.
•
Make sure materials are compatible.
•
Slowly open the shut-off valve.
•
When measuring liquids, vent the pipes carefully.
•
When measuring gases, increase pressure slowly.
•
Avoid float impact (e.g. caused by solenoid valves), as this is likely to damage the measuring
unit or float.
VA40 - VA45
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VA40 - VA45
6.1 Maintenance
Within the scope of routine maintenance of the system and pipelines, the flowmeter should also
be inspected for signs of soiling, corrosive attack and mechanical wear or damage to the
measuring glass. We advise that inspections be carried out at least once per year.
For VA40 (aseptic) a strap wrench is recommended to open the flowmeter.
Devices with flange connection tighten the union nut first before installation.
CAUTION!
Pressurized pipes to be depressurized before removing the device.
Empty pipes as completely as possible.
Devices used for measurement of aggressive media: take appropriate safety precautions
regarding residual liquid in the measuring section.
Untighten the process connection to the piping only (except devices with female threaded
connections)A
lways use new gaskets when reinstalling the flowmeter in the pipeline.
Make sure the O-ring 1 is positioned correctly!
Cleaning of surfaces (e.g. viewing window): avoid electrostatic charges!
Aseptic version: when replacing gaskets, use materials conforming to FDA standards e.g. EPDM.
Before restarting an appropiate leakage test has to be performed.
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6
SERVICE
6.2 Spare parts availability
The manufacturer adheres to the basic principle that functionally adequate spare parts for each
device or each important accessory part will be kept available for a period of 3 years after
delivery of the last production run for the device.
This regulation only applies to spare parts which are subject to wear and tear under normal
operating conditions.
6.3 Availability of services
The manufacturer offers a range of services to support the customer after expiration of the
warranty. These include repair, maintenance, technical support and training.
INFORMATION!
For more precise information, please contact your local sales office.
6.4 Returning the device to the manufacturer
VA40 - VA45
6.4.1 General information
This device has been carefully manufactured and tested. If installed and operated in accordance
with these operating instructions, it will rarely present any problems.
CAUTION!
Should you nevertheless need to return a device for inspection or repair, please pay strict
attention to the following points:
•
Due to statutory regulations on environmental protection and safeguarding the health and
safety of the personnel, the manufacturer may only handle, test and repair returned devices
that have been in contact with products without risk to personnel and environment.
•
This means that the manufacturer can only service this device if it is accompanied by the
following certificate (see next section) confirming that the device is safe to handle.
CAUTION!
If the device has been operated with toxic, caustic, flammable or water-endangering products,
you are kindly requested:
•
to check and ensure, if necessary by rinsing or neutralising, that all cavities are free from
such dangerous substances,
•
to enclose a certificate with the device confirming that is safe to handle and stating the
product used.
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VA40 - VA45
6.4.2 Form (for copying) to accompany a returned device
CAUTION!
To avoid any risk for our service personel, this form has to be accessible from outside of the
packaging with the returned device.
Company:Address:
Department:Name:
Tel. no.:Fax no. and/or Email address:
Manufacturer's order no. or serial no.:
The device has been operated with the following medium:
This medium is:radioactive
water-hazardous
toxic
caustic
flammable
We checked that all cavities in the device are free from such substances.
We have flushed out and neutralized all cavities in the device.
SERVICE
6
We hereby confirm that there is no risk to persons or the environment through any residual media contained in the
device when it is returned.
Date:Signature:
Stamp:
6.5 Disposal
CAUTION!
Disposal must be carried out in accordance with legislation applicable in your country.
Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:
Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:
Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:Separate collection of WEEE (Waste Electrical and Electronic Equipment) in the European Union:
According to the directive 2012/19/EU, the monitoring and control instruments marked with the
WEEE symbol and reaching their end-of-life must not be disposed of with other waste
The user must dispose of the WEEE to a designated collection point for the recycling of WEEE or
send them back to our local organisation or authorised representative.
must not be disposed of with other waste.
must not be disposed of with other wastemust not be disposed of with other waste
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7
TECHNICAL DATA
7.1 Functional principle
The flowmeter operates with the principle of variable area flowmeters.
A glass cone is installed in the measuring unit of VA40/45, in which a suitably formed float can
move freely up and down.
The flowmeter is inserted into a vertical pipeline and the medium flows through it from bottom to
top.
The float adjusts itself so that the buoyancy force F1 acting on it, the flow resistance F2 and its
weight F3 are in equilibrium: F3 = F1 + F2
VA40 - VA45
The height of the float in the measuring unit, which depends on the flow, is displayed on a scale.
The top edge of the float marks the reading line for flow values.
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VA40 - VA45
7.2 Technical data
INFORMATION!
•
The following data is provided for general applications. If you require data that is more
relevant to your specific application, please contact us or your local sales office.
•
Additional information (certificates, special tools, software,...) and complete product
documentation can be downloaded free of charge from the website (Downloadcenter).
Measuring system
Application range VA40Flow measurement of liquids, gases and vapors
Application range VA45Flow measurement of gasses
Operating method / measuring principleVariable area measuring principle
Measured value
Primary measured valueFloat position
Secondary measured valueOperating and standard volumetric flow
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VA40 - VA45
TECHNICAL DATA
7.4 Measuring ranges
Measuring ranges VA40
Measuring span:10 : 1
Declaration of flow:Values = 100%Water: 20°C [68°F]Air: 20°C [68°F], 1.013 bar abs. [14.7 psia]
Float materials:1 Stainless Steel or Hastelloy® - 2 PTFE with insert - 3 TFM - 4 Aluminium - 5 Polypropylene (PP)
Materials →123134512345
Cone ↓Water [l/h]Air [Nm3/h]Max. pressure loss [mbar]
G 13.11
1
DN150.4--0.016-0.007-2--1-
G 14.060.63--0.025-0.012-3--2-
G 14.081--0.04-0.02-4--3-
G 15.071.6--0.06-0.03-4--3-
G 15.092.5--0.09-0.04-5--4-
G 15.124--0.14-0.06-6--5-
G 16.086.3--0.2-0.1-6--5-
G 16.1210--0.3-0.16-7--6-
G 17.0816--0.5-0.25-7--6-
G 17.1225--0.8-0.4-8--7-
N 18.074025131.50.60.80.596231
N 18.096340222.2 0.951.20.797332
N 18.13100633531.51.81.298342
N 19.091601005552.22.81.8139452
N 19.132501608583.34.52.81611452
N 19.19400250140----2114573
N 19.26630400230----27176104
N 21.09DN2563040023018
N 21.13100063035028
N 21.181600100060049
N 21.252500160095070
N 41.09DN40160010006004522281832189115
N 41.132500160090070
N 41.19400025001500128
N 51.10DN50400025001500120
N 51.15630040002400190
N 51.211000063003500310
1 reduced accuracy 2.5%
2 only possible with guided float
2
2
2
2
2
2
2
2
2
91172214683
1418122317684
-28
-42
3645
-76
2
2
2
2
17
26
28
46
2
2
2
2
26257106
33408129
342010125
382411158
567045432512157
90110
-170
2
2
70
118
2
2
473013167
5542142010
7
INFORMATION!
The oper. press. should be at least twice the pressure loss for liquids, and at least 5
times the pressure loss for gases! The specified pressure drops are valid for water and air at maximum flow rate.
Other flow ranges on request. Conversion of other media or operating data (pressure, temperature, density,
viscosity) is performed using the calculation method in accordance with VDI /VDE Directive 3513
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TECHNICAL DATA
VA40 - VA45
Measuring ranges VA40
Measuring span:10 : 1
Declaration of flow:Values = 100%Water: 20°C [68°F]Air: 20°C [68°F], 1.013 bar abs. [14.7 psia]
Float materials:1 Stainless Steel or Hastelloy® - 2 PTFE with insert - 3 TFM - 4 Aluminium - 5 Polypropylene
Materials →123134512345
Cone ↓Water [GPH]Air [SCFM]Max. pressure loss [psi]
G 13.11
1
DN150,11--0,01-0,004-0,03--0,02-
G 14.060,17--0,015-0,007-0,04--0,03-
G 14.080,26--0,025-0,012-0,06--0,04-
G 15.070,42--0,037-0,018-0,06--0,04-
G 15.090,66--0,056-0,025-0,07--0,06-
G 15.121,06--0,087-0,037-0,09--0,07-
G 16.081,66--0,12-0,062-0,09--0,07-
G 16.122,64--0,19-0,09-0,1--0,09-
G 17.084,23--0,31-0,16-0,1--0,09-
G 17.126,60--0,5-0,25-0,1--0,1-
N 18.0710,66,63,430,93 0,370,50,310,10,10,030,040,02
N 18.0916,610,65,811,36 0,591,20,430,10,10,040,040,03
N 18.1326,416,69,251,86 0,930,740,740,10,10,040,060,03
N 19.0942,326,414,53,1 1,361,71,10,190,130,060,070,03
N 19.1366,042,322,54,96 2,052,81,70,20,160,060,070,03
N 19.1910566,037----0,30,20,07--
N 19.2616610660,8----0,40,250,09--
N 21.09DN2516610660,811,2 25,586,84,30,30,20,090,10,06
N 21.1326416692,517,4 28,68117,40,30,250,090,10,06
N 21.1842326415830,4
N 21.2566042325143,4
N 41.09DN4042326415827,9 213,617110,480,260,10,160,07
N 41.1366042323843,4 222,328
N 41.19105766039679,4
N 51.10DN50105766039674,4 234,743,427,90,620,360,170,220,1
N 51.1516641057634118 255,868
N 51.2126421664925192
1 reduced accuracy 2.5%
2 only possible with guided float
(PP)
2
2
2
2
-17
-26
-47
-105
2
2
2
2
2
2
10,5
16
17,4
28,5
43,4
73
2
0,30,30,10,150,9
2
0,480,580,10,170,13
2
0,490,290,150,170,07
2
0,550,350,160,220,1
2
0,680,440,190,230,1
2
0,80,610,20,290,15
34
INFORMATION!
The operating pressure should be at least twice the pressure loss for liquids, and at least 5
times the pressure loss for gases! The specified pressure drops are valid for water and air at
maximum flow rate. Other flow ranges on request. Conversion of other media or operating data
(pressure, temperature, density, viscosity) is performed using the calculation method in
accordance with VDI /VDE Directive 3513
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Page 35
VA40 - VA45
TECHNICAL DATA
Measuring ranges VA45
Measuring span:10 : 1
Declaration of flow::Values = 100%Air 20°C [68°F], 1.013 bar abs. [14,7 psia]
1 float form C
2 float form D
3 reading line
7
Cone no.Float
Flow airMax. pressure loss
form
[l/h][SCFH][mbar][psi]
DN15N -15.01C1500...230055,8...85,630,044
D2300…480085,6...17930,044
N -15.02C5500…9000205...33530,044
D9000…16000335...59530,044
DN25N -25.01C3000…5000112...18630,044
D5000…7500186...27930,044
N -25.02C7500…16500279...61430,044
D16500…25000614...93040,058
DN40N -40.01C17000…26000632...96740,058
D26000…34000967...126540,058
N -40.02C34000…600001265...223240,058
D60000…750002232...279040,058
INFORMATION!
The operating pressure should be at least 5 times the pressure loss for gases! The specified
pressure drops are valid for water and air at maximum flow rate. Other flow ranges on request.
Conversion of other media or operating data (pressure, temperature, density, viscosity) is
performed using the calculation method in accordance with VDI /VDE Directive 3513
Reference condition for gas measurements:
Reference condition for gas measurements:
Reference condition for gas measurements:Reference condition for gas measurements:
The flow measurement of gases are refered to
3
Nl/h or Nm
/h: Volume flow in Normal state 0°C, 1.013 bar abs. (DIN 1343)
SCFM or SCFH: Volume flow in Standard state 15°C, 1.013 bar abs. (ISO 13443)
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35
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KROHNE – Process instrumentation and measurement solutions