Kobold HEINRICH DWF-S User manual

Installation and operating manual DWF
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Density meter DWF
Installation and operating manual
Read these Operation Instructions thoroughly and keep them available for reference!

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Installation and operating manual DWF
Table of Contents
I. Steps prior to operation 4
1.1 Safety first! 5
1.2 Safety advisory for the user 5
1.3 Hazard warnings 5
1.4 Proper use of the device 6
1.5 Returning your sensor for servicing or calibration 6
2. Definition of the device 7
3. Applications 7
4. Operating principle and system configuration 8
5. Technical Data 9
6. Construction 10
6.1 Type of dimensions 10
6.2 Construction details 11
7. Output 12
7.1 KEI 1 or KEI 2 limit switches 12
7.2 Analog output with the ES magneto-electric transmitter 12
8. Characteristic values 12
9. Operating conditions 13
9.1 Fluid conditions 13
9.2 Mounting requirements, 13
9.3 Transport safety 13
9.4 Mounting/start-up 14
9.5 Magnetic filter 14
9.6 Device settings 15
9.6.1 Adjusting the limit transducer 15
9.7 Ambient conditions 15
9.8 Electromagnetic compatibility 15
10. Operation in hazardous areas 16
10.1 Without electrical equipment 16
10.2 With built-in electrical limit transducers 16
10.2.1 Example for built-in limit transducer: 16
10.2.2 Example for built-in sensor Type ES: 17
10.3 Marking for the electric device 17
10.3.1 Marking when the SJ 3,5...N... limit transducer is mounted 17
10.3.2 Marking for the device when the ES magneto-electric transmitter is mounted 17

Installation and operating manual DWF
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11. Electrical connection 18
11.1 Wiring diagram for ES transmitter (signal output 4-20 mA with HART®) 18
11.2 Wiring diagram for ES with 4-20 mA output and 2 limit contacts 19
11.3 Wiring diagram for ES with 4- 20 mA output, pulse output and limit contacts 19
11.4 Wiring diagram for two inductive limit contacts 20
12. Indicator unit 21
13. Auxiliary power 21
14. CE mark 21
15. Order information 21
16. Accessories 21
17. Standards and directives, certificates and approvals 21
18. Safety advisories 22
18.1 Intended purpose 22
18.2 Installation, commissioning, operating personnel 22
19. Maintenance 22
20. Trouble shooting 22
21. Replacement parts 23
22. Packaging, storage, transport 23
23. Exploded views 24
23.1 Complete indicator unit, local with scale 24
23.2 Complete indicator unit with 1 SJ 3,5 N limit transducer 24
23.3 Complete indicator unit with 2 SJ 3,5 N limit transducers 25
23.4 Indicator unit with transmitter type ES Ex HART25
24. Declaration of conformity 26
25. Notes 29
26. Decontamination certificate for device cleaning 30

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Installation and operating manual DWF
I. Steps prior to operation
It is essential that you read these operating instructions before installing and operat-
ing the device.
The device is to be installed and serviced by a qualified technician only.
The density - meter DWF is to be used exclusively to measure density, as well as
liquid, in conjunction with technical specification by Heinrichs Messtechnik.
This installation and operating manual explains how to operate, install and perform
maintenance on the density meter.
The manual doesn’t apply to non-standard versions or applications.
All devices are thoroughly tested and checked for order compliance prior to shipping. Upon receipt of the
device, check it for shipping damage.
If any problem comes to light, contact our head office in Cologne or the local sales office responsible for
your area. Please describe the problem and indicate type and serial number of the device. Heinrichs
Messtechnik extend no guarantee of any kind for repair work that is undertaken without notifying us in
advance of the intention to carry out such work. Unless otherwise agreed, any part or component for
which a claim is lodged is to be sent to us for examination.
Downloading of the present document from our web site www.heinrichs-mt.com and printing out this doc-
ument is allowed only for purposes of using our DWF density-meter. All rights reserved. No instructions,
wiring diagrams, and/or pictures, or any portion thereof, may be produced, stored, in a retrieval system or
transmitted by any means, electronic, mechanical, photocopying or otherwise, without the prior written
permission of Heinrichs Messtechnik GmbH.
Although the materials in the present document were prepared with extreme care, errors cannot be ruled
out. Hence, neither the company, the programmer nor the author can be held legally or otherwise respon-
sible for any erroneous information and/or any loss or damage arising from the use of the information
herein.
Heinrichs Messtechnik GmbH extends no express or implied warranty in regard to the applicability of the
present document for any purpose other than that described herein.
We plan to optimize and improve the products described herein and in so doing will incorporate not only
our own ideas but also, and in particular, any suggestions for improvement made by our customers. If you
feel that there is any way in which our products could be improved, please send your suggestions to the
following address:
Heinrichs Messtechnik GmbH
HM-E (Development Department)
Headword: DWF
Robert-Perthel-Straße 9
D-50739 Köln
or:
via E-mail: mailto:[e-mail]

Installation and operating manual DWF
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We reserve the right to change the technical data herein in the light of any technical progress
that might be made. For updates regarding the product herein, visit our website at
www.heinrichs-mt.com, where you will also find contact information for the Heinrichs Messtechnik distribu-
tor nearest you. For information regarding our own sales operations, contact us at [e-mail].
1.1 Safety first!
The device described herein is to be installed and serviced only by a qualified specialist such as a quali-
fied Heinrichs Messtechnik mechanic or service technician.
Warning
Before servicing the device, it must be completely empty, and disconnected from all pe-
ripheral devices. Only original replacement parts are to be used.
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, over voltage or lightning. Any such improper operation,
use or handling shall automatically invalidate the warranty for the product concerned.
In the event a problem arises with your device, please contact us at one of the following numbers to ar-
range to have your device repaired:
Phone: [phone]
Fax: [phone]
Contact our customer service department if your device needs repair or if you need assistance in diagnos-
ing a problem with your device
1.2 Safety advisory for the user
The present document contains the information that you need in order to operate the product described
herein properly. The document is intended for use by qualified personnel. This means personnel, who are
qualified to operate the device described herein safely,
mechanic engineers,
service technicians
who are conversant with the safety regulations pertaining to the use of Measuring and control engineering
devices and with the applicable laws and regulations in their own country.
Such personnel must be authorized by the facility operator to install, commission and service the product
described herein, and are to read and understand the contents of the present operating instructions before
working with the device.
1.3 Hazard warnings
The purpose of the hazard warnings listed below is to ensure that device operators and maintenance per-
sonnel are not injured and that the density-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.

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Installation and operating manual DWF
Danger
means that failure to take the prescribed precautions will result in death, severe bodily injury, or substan-
tial material damage.
Warning
means that failure to take the prescribed precautions could result in death, severe bodily injury, or sub-
stantial material damage.
Caution
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.
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 Proper use of the device
Warning
The operator is responsible for ensuring that the material used in the sensor and
housing is suitable and that such material meets the requirements for the fluid be-
ing used and the ambient site conditions. The manufacturer accepts no responsibil-
ity in regard to such material and housing.
Warning
In order for the device to perform correctly and safely, it must be shipped, stored,
set up, mounted operated and maintained properly.
1.5 Returning your sensor for servicing or calibration
Note: In accordance with the applicable German waste disposal legislation, the owner/client is respon-
sible for the disposal of special waste and hazardous materials.
Consequently, all devices sent to us for repair must be free of any hazardous materials.
This also applies to possible hollow spaces and fissures in the devices. If repair is necessary, confirm the
above-mentioned item in writing
Warning
The operator is liable for any loss or damage of any kind, including personal injury,
decontamination measures, removal operations and the like that are attributable to
inadequate cleaning of the device.
Any device sent in for servicing is to be accompanied by a certificate as
specified in Decontamination certificate for device cleaning.
The device is to be accompanied by a document describing the problem with the device. Please include in
this document the name of a contact person that our technical service department can get in touch with so
that we can repair your device as expeditiously as possible and therefore minimize the cost of repairing it.
If hazardous materials remain in or on the device after it has been returned, Heinrichs Messtechnik
shall be authorized to remove them at the client’s expense without further inquiry!

Installation and operating manual DWF
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2. Definition of the device
Vendor / Manufacture
Heinrichs Messtechnik GmbH
Robert –Perthel - Str. 9 D-50739 Köln
Phone [phone] - 0
Fax [phone] - 178
Internet: http://www.heinrichs-mt.com/
E-Mail: mailto:[email protected]
Product type and designation
Mechanical density - meter DWF
Manual issue date
30.06.2020
Version No.
20.01
file: DWF_BA_20.01_en
3. Applications
The sensor DWF is used for density metering of liquid media in pipes. The scale on the device shows the
density rate expressed as grams per liter or kg per m³. Special scale on your request.
Applications: density -metering, -monitoring, and control of liquid media.
The device can be fitted with limit switches for purposes or ES converter of process monitoring.
Note: The device is of limited use for the metering of potentially hazardous liquids. It is imperative that the
operator takes steps to ensure that, no personnel are harmed and no equipment is damaged. The system
operator is legally responsible for any effects provoked by operation of the device.

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Installation and operating manual DWF
4. Operating principle and system configuration
The measuring element is composed of a measuring
chamber (1), measuring spring-rods (3), float (2) and
a magnetic coupling system (4+5).
If a liquid medium flows through the horizontal meas-
uring chamber (1) and in direction to the arrow, the
float surrounded by the liquid is lifted until a state of
balance between the lift force (A), the measuring
spring-rods (3) and the float weight (GA) is reached.
The vertical position of the float in the chamber is a
measure for the density of the medium and will be
transmitted to the scale (6) by an encapsulated mag-
netic coupling system (4+5).
Density changes thus entail an adjustment of the local
indication or of the electrical output signal.
The readings obtained apply solely to the medium for
which the device has been calibrated or for a medium
with the same viscosity.

Installation and operating manual DWF
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5. Technical Data
Equipment execution:
DWF-S
Stainless steel
DWF-H
Hastelloy
Process - connection
DIN / EN
Body 1 Ø D=108mm
25 PN40
Body 2 Ø D=140mm
50 PN40
Body 3 Ø D=194mm
50 PN40
Max. process pressure
PN16
higher pressure on request
Ambient conditions
dimension
700mm
Flow direction
horizontal
Flow in and out
horizontal
Largest flow range
Body 1
max. 2500 l/h
water 20°C
Body 2
max. 5000 l/h
Body 3
max. 10000 l/h
Measuring range
density
700 –1900 g/l
Measuring span
50g/l … 600g/l
Measured error
50 g/l
± 1,25 g/l
100 g/l
± 2 g/l
200 g/l
± 3 g/l
300 g/l
± 4,5 g/l
600 g/l
± 6 g/l
Repeatability
± 1% of Measuring span
Linearity
± 1% of Measuring span
Ambient conditions
Ambient temperature
-20°C … +80 °C without electrical accessories
-20°C … +70 °C with ES converter
-20°C ... +65 °C with limit transducer
Storage temperature
identical to the ambient temperature ranges.
Climatic category
weather-protected and/or unheated locations,
class C according to IEC 654 Part 1
Shock resistance /
vibration resistance
the meter should be protected against extreme
shocks and vibrations, which could end in
damage.
Fluid conditions
Fluid temperature
-20°C … +150°C
Max. flow
max. flow ranges of the bodys based on density
and viscosity of water at 20°C.
It will be less by higher density and viscosity.
Physical state
liquid
Viscosity
measuring output will be changed by viscosity of
liquid.
Options
Limit switches
KEI 1 (inductive)
KEI 2 (inductive)
ES converter
HART
Profibus PA
Magnetic filter
On request
Connections
special connections on request

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Installation and operating manual DWF
6. Construction
6.1 Type of dimensions
DN / EN PN Ø D (mm) A (mm) B(mm) DWF Nr.
25 40 108 30 258 1
50 40 140 40 258 2
50 40 194 65 258 3

Installation and operating manual DWF
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6.2 Construction details
Pos. Bezeichnung Pos. Bezeichnung
1 process connection - flow inlet 8 measuring scale
2 spring-rods - float suspension 9 follow magnet indication system
3 measuring range adjustment 10 indication part compl.
4 measuring spring -rods 11 coupling magnet
5
measuring chamber 12 float
6
closing screw - Transport-safety device G1/2" 13 zero point adjustment compl.
7 process connection - flow outlet 14 flow deflector

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Installation and operating manual DWF
7. Output
Various electrical contact makers or converter may be installed in the indicator unit.
7.1 KEI 1 or KEI 2 limit switches
1 or 2 limit switches, type SJ 3,5N, make Pepperl + Fuchs
to the connection to NAMUR electrical circuits to EN 60974-5-6.
(special switch possible, e.g. SN version)
Technical data:
Safety class, SJ 3,5 N
PTB Nr. 99ATEX 2219 X
7.2 Analog output with the ES magneto-electric transmitter
The magneto-electric transmitter is factory-calibrated to the scale values upon shipment. The signal out-
put is supplied exclusively in a two-wire connection at 4-20 mA. Normally, the 4-20 mA signal has the
HARTprotocol; alternatively it can have PROFIBUS PA.
Additional options:
1-2 limit values.
The signal output and the limit values can be configured using a HARTmodem operating on the follow-
ing configuration programs: SensorPort from Bopp & Reuther, PDM from Siemens or AMS from Rose-
mount.
Furthermore, a HARThand-held terminal (with DD software) can also be used.
For more information about configuration, please refer to the separate Operating Instructions for the ES.
Safety class: DMT 00 ATEX 075 / II 2G Ex ia IIC T6 Gb
When installing electrical equipment in hazardous areas, the conditions and provisions specified
in the approval documents must be followed.
8. Characteristic values
Density of fluid:
700 –1900 g/l
Measuring range:
50g/l ...600g/l
Measuring accuracy:
Measuring span
Measuring accuracy
50 g/l
± 1,25 g/l
100 g/l
± 2 g/l
200 g/l
± 3 g/l
300 g/l
± 4,5 g/l
600 g/l
± 6 g/l
Additional inaccuracy for:
ES = +/- 0.2%
Repeatability:
+/- 1 % of measuring span
Linearity:
+/- 1% of measuring span

Installation and operating manual DWF
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Influence of ambient temperature
Without electrical equipment and with limit switches without influence
With ES transmitter:
+/- 0.5 % / 10 K reference temperature 22°C
Influence of fluid temperature
Deviations in fluid temperature from the temperature observed during calibration can result in a propor-
tional display fault because of the corresponding change in density.
Changes in viscosity cause a non-linear display.
9. Operating conditions
9.1 Fluid conditions
Liquids with:
sufficient flow ability
that are free of solids
do not bond
do not tend to settle
9.2 Mounting requirements,
The mounting location must be suitable for a horizontal direction of flow from left to right.
The limit values for temperature and air humidity at the mounting location must be maintained. Avoid cor-
rosive atmospheres. If this cannot be avoided, ventilation must be installed.
Please make sure that there is adequate clearance from parts that might cause magnetic interferences
such as solenoid valves and ferromagnetic components like steel brackets/supports. We recommend that
the minimum lateral distance between two adjacently mounted devices be 300 mm. The devices can be
mounted close together if offset by one device length. The minimum lateral clearance for interfering steel
parts should be 200 mm. In case of doubt, check the interference by moving the device back and forth in
the selected distance by about 200 mm and testing whether the pointer position changes.
Select the mounting location so as to enable a reliable reading of the scale values. Please take note as
well of the space requirement for any possible disassembly of the device.
9.3 Transport safety
Process connection will be protected by yellow caps
The float will be protected by two transport locks in plastic during transportation and storage. This
transport locks need to be changed before installation with two closing screws which are fixed at the body.

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Installation and operating manual DWF
9.4 Mounting/start-up
The device must be mounted in horizontal direction of flow from left to right
The nominal size of the device and that of the pipes must be the same. The pressure stages and, hence,
the dimensions of the flanges must coincide. The surface roughness of the flange-sealing surface must be
suitable for the prescribed gaskets.
Check whether the mounting clearance between the flanges of the pipes corresponds to the assembly
dimension of the device plus two gaskets. To achieve stress-free mounting, the connections of the pipes
must be aligned parallel to the connections of the device.
Use connecting bolts and gaskets in the prescribed dimensions. The gaskets must be suitable for the
operating pressure, the temperature and the measured medium
Tighten the screws crosswise so that the process connections are tight.
Please check whether the pipe is adequately stable to rule out the possibility of vibration or swinging of the
device. (Do not use steel mounting parts on the device.)
The DWF-density meter be sensitive by dirt in fluids
If there is risk of dirt or solid matter penetrating the process pipes, flush them beforehand so that these
materials do not get caught in the device. If these materials are still present during normal operating con-
ditions, mount a filter in front of the device.
Especially Ferromagnetic solid matter such as spatter can lead to the breakdown of the device. If these
materials are still present during normal operating conditions, mount a magnetic filter (accessory) in front
of the device.
When using liquids, flush to avoid a surge of gas bubbles. Basically, avoid activation using solenoid valves
to prevent the float from shooting upwards.
9.5 Magnetic filter
When dealing with flow media with ferrous particles, we recommend the connection of a magnetic filter.
To protect from corrosion, encapsulated permanent magnets are laid out in spiral form. The spiral mount-
ing produces optimum effect at small pressure loss. The filter can be supplied with groove or tongue,
projection or return, other standards or special connections according to customer wishes.
Dimension:
DN
g (mm)
25
68
50
102

Installation and operating manual DWF
Page 15
9.6 Device settings
The measuring equipment is delivered ready for operation according to your order specifications.
The limit transducers are set to the desired values. If you have submitted no requirements, the basic
setting for:
1 contact device: - Minimum contact switching point at 10% of descending density
(damped / closed-circuit principle).
2 contact devices: Minimum contact switching point at 10% of descending density and maximum contact
switching point at 90% of ascending density.
9.6.1 Adjusting the limit transducer
The contacts are adjustable through the contact position indicators located on the scale. Dismantle the
indicator cover, unfasten the contact position indicators, set to the desired value and reattach them.
9.7 Ambient conditions
Ambient temperature ranges
Warning
Without electrical accessories:
-40 °C to + 80 °C
With limit transducer:
-40 °C to + 65 °C
With ES signal output:
-40 °C to + 70 °C
For the hazardous area version, take note of the maximum ambient temperatures depending on the tem-
perature class as specified in the Type Examination Certificate.
Storage temperature
The storage temperature is identical to the ambient temperature ranges
Climatic category
Weather-protected and/or unheated locations, class C according to IEC 654 Part 1
Degree of protection
IP 65 (Aluminum indicator unit)
IP 67 (Stainless steel indicator unit)
Shock resistance/vibration resistance
Warning
The meter should be protected from extreme shocks and vibrations, which could
cause damage.
9.8 Electromagnetic compatibility
EN 61000-6-2:2011 Immunity industrial environment
EN 61000-6-1:2007 Emitted interference residential environment
EN 55011:2011 Group 1, Class B
NAMUR recommendation NE 21

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Installation and operating manual DWF
10. Operation in hazardous areas
10.1 Without electrical equipment
The basic version of the density meter is a non-electrical device without its own ignition sources and
meets DIN EN 13463-1 requirements. It can be used in hazardous areas that require Category 2 equip-
ment.
Marking:
II 2G Ex h IIC TX Gb
II 2D Ex h IIIC TX°C Db
Reg. Nr.: BVS 03 ATEX H/B 112
Tech. File Ref. 03-02 X
Since the device does not have its own power sources that would result in a temperature increase, the
fluid temperature is decisive for the maximum surface temperature.
When used in potentially explosive dust atmospheres, the device must be cleaned regularly in order to
avoid deposits exceeding 5 mm.
10.2 With built-in electrical limit transducers
When the limit transducers are installed, the device becomes an electrical assembly and receives a mark-
ing in accordance with DIN EN 50014 from the entire device with the built-in electrical limit transducers.
The electrical and thermal data and the special conditions of the EC Type Examination Certificate of the
built-in limit transducers must be observed.
The influence of the fluid temperature on the built-in limit transducers must be observed. The over tem-
perature of the maximum fluid temperature based on the maximum ambient temperature must be consid-
ered with a factor according 0,3.
10.2.1 Example for built-in limit transducer:
Max. ambient temperature Tamb = 40°C
Max. fluid temperature Tm = 120°C
Factor for brought-in heat F = 0.3
Temperature class T4
Tü= Over temperature
Ta = Ambient temperature of limit transducer
CCCTambFTüTa
CCCTambTmTü


64403,0*80*
8040120
In accordance with the tables in the PTB 99 ATEX 2219 X EC Type Examination Certificate, the SJ 3,5-...
N... inductive sensor must be operated in the T5 temperature class with an intrinsically safe circuit that
does not exceed the maximum values of the Type 3 circuit.
When using the device in hazardous areas, follow the applicable national installation rules.

Installation and operating manual DWF
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10.2.2 Example for built-in sensor Type ES:
Ta= 70°C
Tamb = 60°C
F = 0.2
CC
CC
Tamb
F
TambTa
Tm 













9360
3,0 6070
10.3 Marking for the electric device
10.3.1 Marking when the SJ 3,5...N... limit transducer is mounted
PTB 99 ATEX 2219 X
II 2G Ex ia IIC T6-T4 Gb
10.3.2 Marking for the device when the ES magneto-electric transmitter is mounted
DMT 00 ATEX 075
II 2G Ex ia IIC T6 Gb

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Installation and operating manual DWF
11. Electrical connection
Wiring
To connect the auxiliary power, remove the indicator cover, insert the connector cable into the cable gland
and attach it to the terminals according to terminal diagram. Tighten the cable gland securely, remount the
indicator cover and close it tightly.
11.1 Wiring diagram for ES transmitter (signal output 4-20 mA with HART®)

Installation and operating manual DWF
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11.2 Wiring diagram for ES with 4-20 mA output and 2 limit contacts
11.3 Wiring diagram for ES with 4- 20 mA output, pulse output and limit contacts

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Installation and operating manual DWF
11.4 Wiring diagram for two inductive limit contacts