Kobold Heinrichs V31 Operating instructions

Heinrichs Messtechnik GmbH
EX-Supplementary Operating Manual V31
January 2021
Variable Area Flow Meter
V31
Supplementary Operating Instructions
for Hazardous Locations
This operating manual contains important information for the operation in potentially explosive atmospheres
Please read the instructions carefully and store them in a safe place for future reference

Heinrichs Messtechnik GmbH
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Ex-Supplement operating manual V31
Contents
1. GENERAL INSTRUCTIONS................................................................................................................. 3
1.1 Steps prior to operation ...............................................................................................................................................................3
1.2 Mounting, set up, start up and maintenance.........................................................................................................................3
1.3 Hazard warnings.............................................................................................................................................................................4
1.4 Intended use of the device ..........................................................................................................................................................4
2. IDENTIFICATION .................................................................................................................................. 5
2.1 Manufacturer...................................................................................................................................................................................5
2.2 Testing / Certification ................................................................................................................................................................... 5
3. BASIC TECHNICAL PRINCIPLES OF EXPLOSION PROTECTION............................................... 6
4. SAFETY INSTRUCTIONS .................................................................................................................... 7
4.1 Atmospheric conditions................................................................................................................................................................7
4.2 Hot surfaces.....................................................................................................................................................................................7
4.3 Electrostatic charge.......................................................................................................................................................................7
4.3.1 Electrostatic charge of non-conductive parts of the housing during cleaning. .................................................7
4.3.2 Process related charges...................................................................................................................................................... 8
4.4 Mechanical shock resistance ......................................................................................................................................................8
4.5 Operation in hazardous areas caused by dust ......................................................................................................................8
4.6 Installation conditions...................................................................................................................................................................9
4.7 Marking.............................................................................................................................................................................................. 9
4.7.1 Without electrical equipment ............................................................................................................................................ 9
4.7.2 With external mounted limit switches ...........................................................................................................................9
5. DECLARATION OF CONFORMITY..................................................................................................10

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Ex- Supplement operating manual V31
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1. General Instructions
1.1 Steps prior to operation
Prior to installation and operation, it is essential that the operator familiarizes himself with all of the
instructions and information contained in the manual for non-explosion proof Variable Area Flow
Meters V31 series as well as the present instructions. If any part of either manual is missing, contact
Heinrichs Messtechnik GmbH to request a new manual. These manuals can also be downloaded
from our website..
These supplementary Operating Instructions for Hazardous Locations apply to non explosion proof and non
electrical versions of the Variable Area Meters V31 series. These instructions are supplementary operating
manuals for non-explosion proof versions. If you do not have a copy of the latter instructions, please request one
from Heinrichs Messtechnik GmbH or download the instructions from our website.
The information in this manual contain essentially only the data relevant to explosion protection
The technical data in the mounting and operating instructions for non-explosion proof versions still apply insofar
as the present instructions do not replace them or exclude their application.
1.2 Mounting, set up, start up and maintenance
Installation, set up start up and maintenance are to be performed by a technician trained to work with explosion-
proof devices, or by a Heinrichs Messtechnik service technician
Warning
Any maintenance or repair that safety relevant in terms of explosion-protection is to be
carried out by the manufacturer, an authorized Heinrichs
Heinrichs Messtechnik GmbH accepts no liability for any loss or damage of any kind arising from improper
operation of any product, improper handling or use of any replacement part, or from external electrical or
mechanical effects, overvoltage or lightning. Any such improper operation, use or handling shall automatically
invalidate the warranty for the product concerned. For consequential damages due to a.m. reasons, no liability
will be accepted.
In the event of a problem please contact the service center of Heinrichs Messtechnik:
Phone: [phone]
Fax: [phone]
Internet: www.heinrichs.eu
Email: [email protected]
Contact our customer service department if your device needs repair or if you need assistance in diagnosing a
problem with your device.

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Ex-Supplement operating manual V31
1.3 Hazard warnings
The purpose of the hazard warnings listed below is to ensure that device operators and maintenance personnel are
not injured and that the flow meter and any devices connected to it are not damaged.
The safety advisories and hazard warnings in the present document that aim to avoid placing operators and
maintenance personnel at risk and to avoid material damage are prioritized using the terms listed below, which are
defined as follows in regard to the instructions herein and the advisories pertaining to the device itself.
Warning
means that failure to take the prescribed precautions could result in injury, substantial material
damage or even death. Always comply to these warnings and proceed with caution.
Caution
means that failure to take the prescribed precaution could result in material damage or
destruction of the device. We advice always to abide to these instructions!
Note
means that the accompanying text contains important information about the product, handling
the product or about a section of the documentation that is of particular importance.
1.4 Intended use of the device
Warning:
The operator is responsible for ensuring that the material used in the sensor and transmitter
housing is suitable and that such material meets the requirements for the fluid being used and
the ambient site conditions. The manufacturer accepts no responsibility in regard to such
material and housing.
Caution:
In order for the device to perform correctly and safely, it must be shipped, stored, set up,
mounted operated and maintained properly.

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Ex- Supplement operating manual V31
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2. Identification
2.1 Manufacturer
Manufacturer:
Heinrichs Messtechnik GmbH
Robert-Perthel-Strasse 9
D-50739 Cologne
Germany
Phone: [phone]
Fax: [phone]
Internet: www.heinrichs.eu
Email: [email protected]
Product type:
Area-Flow meter for liquid and gaseous media
Product name:
V31
File name:
v31-ex_ba_21.01_en.doc
Version:.
21.01,
Date, 14th January 2021
2.2 Testing / Certification
The Variable Area Flow Meter V31 in the non-electrical version was tested by the manufacturer under the Ex-
Directive 2014/34/EU according to following standards:
DIN EN 1127-1:2011 Explosive atmosphere, basis concept and methodology
and
DIN EN ISO 80079-36:2016 Non-electrical equipment for use in hazardous areas
Part1: Principles and requirements
The technical documentation was deposited in accordance with Article 8, paragraph 1b ii guideline for the Notified
Body at DEKRA Testing and Certification GmbH under the registration number BVS 10 ATEX H/B 119

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3. Basic technical principles of explosion protection
Acc. Directive 2014/34/EU (ATEX)
Example designation
0158
II
2G
Ex
h
IIC
T6
Gb
Equipment groups
I
Equipment group I applies to equipment intended for use in underground
parts of mines as well as those parts of surface installations of such mines
endangered by firedamp and/or combustible dust.
II
Equipment group II applies to equipment intended for use in other places
liable to be endangered by explosive atmospheres. This group is subdivided
into three categories.
Equipment category
Gas
Dust
Definition
1G
(0)
1 D
(20)
Equipment in this category is intended for use in areas in which
explosive atmospheres caused by mixtures of air and gases,
vapours or mists or by air/dust mixtures are present continuously, for
long periods or frequently.
2 G
(1)
2 D
(21)
Equipment in this category is intended for use in areas in which
explosive atmospheres caused by gases, vapours, mists or air/dust
mixtures are likely to occur.
3G
(2)
3D
(22)
Equipment in this category is intended for use in areas in which
explosive atmospheres caused by gases, vapours, mists, or air/dust
mixtures are unlikely to occur or, if they do occur, are likely to do so
only infrequently and for a short period only.
(The numbers in round brackets correspond to the IEC Zones.)
Acc. EN 60079-0 ff
Ex = Explosion-proof equipment
Examples of electrical types of protection
General requirements
EN DIN 60079-0
„d“
Flameproof enclosure (db, dc)
EN DIN 60079-1
„e“
Increased safety (eb, ec)
EN DIN 60079-7
„i“
Intrinsic safety (ia, ib, ic)
EN DIN 60079-11
„t"
Equipment dust ignition protection by
enclosure "t" (ta, tb, tc)
EN DIN 60079-31
Non-electrical types of protection
„h“
Basic Method and requirements
DIN EN ISO 80079-36
Explosion groups
Gases and vapours
IIA
Acetone, benzene, fuel oil, ethanoic acid
IIB
City gas, ethylene, isoprene
IIC
Acetylene, hydrogen, carbon bisulphide
Dust Atmospheres
IIIA
Fibers and flyings
IIIB
Non-conductive dusts
IIIC
Metal dusts
Temperature classes
Maximum surface temperature
Temperature class
450 °C
842 °F
T1
300 °C
572 °F
T2
200 °C
392 °F
T3
135 °C
275 °F
T4
100 °C
212 °F
T5
85 °C
185 °F
T6
Equipment protection level, EPL
Gases: Ga, Gb oder Gc
Dust: Da, Db or Dc
Explosion protection designations [square brackets] refer to “Related electrical equipment or circuits.”

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Ex- Supplement operating manual V31
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4. Safety Instructions
Warning:
Only devices with Ex marking must be operated in hazardous areas!
4.1 Atmospheric conditions
According to EN 1127-1 hazardous area is defined as a mixture of air and flammable gases, vapors mist or dust
under atmospheric conditions. These are defined according to DIN EN ISO 80079-36, para 1 with following values:
Tatm = -20°C …+60°C and Patm = 0, 8 … 1, 1 bar. Outside this range there are no safety related characteristics
available for most of ignition sources.
Inside the tube Variable Area Flow Meters work typically outside the atmospheric conditions of 0, 8 … 1, 1 bar.
Therefore, regardless of zoning, explosion protection cannot be applied due to a lack of safety related
characteristics.
The operation with flammable media is therefore only permissible if no explosive atmosphere (medium / air
mixture) is formed inside the Flow Meter. If this condition is not met, the risk of ignition in each case has to be
evaluated by the operator, taking into account the existing parameters (e.g. pressure, temperature, medium,
materials inside the tube).
4.2 Hot surfaces
The unit possesses no own energy sources, which would lead to an increase in surface temperature. Thus, the
maximum surface temperature is therefore dependent on the operating conditions (such as fluid temperature, heat
radiation or with heating jacket version of the heating medium).
For this reason, a temperature class / surface temperature range is stated on the rating plate of the device. Further
information is given in these operating instructions. The max. permissible ambient and operating temperature
corresponds to the data of the standard operating instructions.
4.3 Electrostatic charge
4.3.1 Electrostatic charge of non-conductive parts of the housing during cleaning.
Warning:
The protective cover of the measuring glass is produced of non-conductive polycarbonate
which could become electro statically charged due to friction when cleaned with a dry cloth
and thus generate an ignitable spark. Therefore, to prevent electrostatic charging clean only
with a damp cloth.
See also the warning on the instrument.
Achtung! / Caution!
Gefahr elektrostatischer
Aufladung! Nicht reiben!
Danger of electrostatic charge!
Do not rub!

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4.3.2 Process related charges
The transporting of non conductive liquids or gases in Variable Area Flow Meters can operationally lead to a charge
separation inside the measuring tube. To ensure such electrostatic build-up are discharged, Variable Area Flow
Meters must therefore be permanently grounded by the operator. If grounding is not viable via the process
connections (e.g. plastic process pipes) the flow meter must be connected to the grounding screw [1], which is
located at the rear instrument panel, via a cable to the local equipotential bonding.
(1) connection screw for grounding
4.4 Mechanical shock resistance
The instruments have been type tested for impact strength in accordance with DIN EN ISO 80079-36. The devices
were equipped with a polycarbonate protective cover for the glass measuring cone. The requirements with impact
energy of 7 Joule to metal parts and at 4 joules translucent parts were met.
Nevertheless, we recommend that you install the Variable Area Flow Meter with its glass measuring tube so that it
is protected from mechanical damage.
4.5 Operation in hazardous areas caused by dust
With regard to surface temperatures and dust deposits, the requirements for establishment according to
DIN EN 60079-14 " Electrical installations design, selection and erection“must be met.
When used in potentially explosive dust environments, regular cleaning is required to avoid dust deposits from
exceeding a thickness of 5mm.
1

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Ex- Supplement operating manual V31
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4.6 Installation conditions
For the Ex- version of the V31, the same installation conditions are valid as described in the operating instruction
of the standard instrument.
It hast to be insured by the operator that maximum ambient- and fluid temperature of the instrument does not
exceed the prevailing temperature class of the hazardous area.
The maximum permissible temperature is indicated on the label.
In addition the operator is to consider the dangers presented by hot surfaces in accordance with the requirements
of EN 1127-1:2019 (Explosion protection–Principles and Methods) paragraph 5.1 and 6.4.2.
4.7 Marking
4.7.1 Without electrical equipment
In the basic version the flow meter is a non- electrical equipment under intended operation without own sources of
ignition and complies with the requirements of DIN EN ISO 80079-36 and can be used in hazardous areas requiring
instruments of category 2.
Marking:
Type: V31 Heinrichs Messtechnik GmbH, 50739 Köln
II 2G Ex h IIC TX Gb
II 2D Ex h IIC TX°C Db
Reg. No.: BVS 10 ATEX H/B 119
Tamb -20°C…+80°C
4.7.2 With external mounted limit switches
The Variable Area Flow Meter can be equipped with external limit switches. These limit switches must possess
either:
- an own Type examination certificate according to EN 60079 ff or
- they must meet the requirements of „simple apparatus“ according
EN 60079-11 / 5.7
The Ex marking is printed on the name plate of each switch.
Caution:
The influence of the fluid temperature on the installed switch must be considered.

Heinrichs Messtechnik GmbH
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5. DECLARATION OF CONFORMITY

Heinrichs Messtechnik GmbH
Ex- Supplement operating manual V31
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Heinrichs Messtechnik GmbH
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Ex-Supplement operating manual V31