KROHNE H250-RR Operating Manual

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Handbook

H250 M40

H250 M40H250 M40

Variable area flowmeter

HandbookHandbook

Page 2

IMPRINT

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Subject to change without notice.

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H250 M40

CONTENTS

1 Safety instructions 5

1.1 Intended use ..................................................................................................................... 5

1.2 Certifications .................................................................................................................... 6

1.3 Pressure equipment directive.......................................................................................... 6

1.4 Safety instructions from the manufacturer ..................................................................... 8

1.4.1 Copyright and data protection ................................................................................................ 8

1.4.2 Disclaimer ............................................................................................................................... 8

1.4.3 Product liability and warranty ................................................................................................ 9

1.4.4 Information concerning the documentation........................................................................... 9

1.4.5 Warnings and symbols used................................................................................................. 10

1.5 Safety instructions for the operator............................................................................... 10

2 Device description 11

2.1 Scope of delivery............................................................................................................. 11

2.2 Device version................................................................................................................. 12

2.2.1 Indicator versions ................................................................................................................. 13

2.2.2 Float damping ....................................................................................................................... 15

2.2.3 Pointer damping.................................................................................................................... 15

2.3 Nameplate ...................................................................................................................... 16

2.4 Description code............................................................................................................. 17

2.5 Electronic revision.......................................................................................................... 18

3 Installation 19

3.1 General installation notes .............................................................................................. 19

3.2 Storage ........................................................................................................................... 19

3.3 Installation conditions ....................................................................................................20

3.3.1 Tightening torques................................................................................................................ 22

3.3.2 Magnetic filters ..................................................................................................................... 22

3.3.3 Heat insulation ...................................................................................................................... 23

4 Electrical connections 24

4.1 Safety instructions.......................................................................................................... 24

4.2 Electrical connection for indicator M40 ......................................................................... 25

4.2.1 Connection of the limit switches K1/K2................................................................................ 25

4.2.2 Current output ESK4 / ESK4A............................................................................................... 28

4.2.3 ESK4-T limit outputs............................................................................................................. 31

4.2.4 ESK4-T pulse output ............................................................................................................. 33

4.2.5 ESK4-T binary input .............................................................................................................. 34

4.2.6 ESK4-FF / ESK4-PA fieldbus communication...................................................................... 35

4.2.7 Harting HAN 7D connection.................................................................................................. 36

4.3 Grounding connections................................................................................................... 37

4.4 Ingress protection .......................................................................................................... 37

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CONTENTS

H250 M40

5 Start-up 38

5.1 Standard device .............................................................................................................. 38

5.2 Indicator ESK4-T ............................................................................................................ 38

6 Operation 39

6.1 ESK4 / ESK4A - Loop Check Mode................................................................................. 39

6.2 Operating elements ESK4-T........................................................................................... 40

6.3 Basic principles of operation ESK4-T ............................................................................ 41

6.3.1 Description of the operating keys......................................................................................... 41

6.3.2 Navigation within the menu structure.................................................................................. 41

6.3.3 Change the settings in the menu..........................................................................................42

6.4 Overview of the units ESK4-T......................................................................................... 43

6.5 Error messages ESK4-T................................................................................................. 44

6.6 ESK4-T menu.................................................................................................................. 46

6.6.1 Factory settings .................................................................................................................... 46

6.6.2 Menu structure ..................................................................................................................... 47

6.6.3 Menu description .................................................................................................................. 49

7 Service 56

7.1 Maintenance ................................................................................................................... 56

7.2 Replacement and retrofitting......................................................................................... 56

7.2.1 Replacing floats .................................................................................................................... 56

7.2.2 Retrofitting of the float damping .......................................................................................... 57

7.2.3 Retrofitting of the limit switch .............................................................................................. 58

7.2.4 Replacement - Retrofitting ESK4 / ESK4A ........................................................................... 59

7.2.5 Replacement - Retrofitting add-on module ESK4-T / PA / FF............................................. 60

7.3 Spare parts availability...................................................................................................60

7.3.1 List of spare parts................................................................................................................. 60

7.4 Availability of services .................................................................................................... 64

7.5 Returning the device to the manufacturer..................................................................... 64

7.5.1 General information.............................................................................................................. 64

7.5.2 Form (for copying) to accompany a returned device............................................................ 65

7.6 Disposal .......................................................................................................................... 65

7.7 Disassembly and recycling............................................................................................. 66

7.7.1 Description of the device components ................................................................................. 66

7.7.2 Indicator versions ................................................................................................................. 67

8 Technical data 70

8.1 Functional principle........................................................................................................ 70

8.2 Technical data................................................................................................................. 71

8.3 Dimensions and weight .................................................................................................. 79

8.4 Measuring ranges...........................................................................................................82

9 Notes 90

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H250 M40

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 clean gases, vapours and liquids.

Intended use:

• The product may not contain any ferromagnetic particles or solids. It may be necessary to install magnetic filters or mechanical filters.

• The product must be sufficiently liquid and free of deposits.

• Avoid pressure surges and pulsing flows.

• Open valves slowly. Do not use solenoid valves.

SAFETY INSTRUCTIONS

Use suitable measures to eliminate compression vibrations during gas measurements:

• Short pipeline lengths to next restriction

• Nominal pipe size not greater than nominal device size

• Use of floats with damping

• Increase in operating pressure (while taking into account the resulting change in density and

thus change in scale)

Observe installation conditions according to VDI/VDE 3513-3.

DANGER!

For devices used in hazardous areas, additional safety notes apply; please refer to the Ex documentation.

CAUTION!

Do not use any abrasive media containing solid particles or highly viscous media.

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SAFETY INSTRUCTIONS

1.2 Certifications

CE marking

The device fulfils all applicable statutory requirements of the EU directives:

• Pressure equipment directive

• For devices with electrical installations: EMC directive

• Devices for use in hazardous areas: ATEX directive

as well as

• NAMUR recommendations NE 21, NE 43 and NE 107

The manufacturer certifies successful testing of the product by applying the CE marking. An EU declaration of conformity regarding the directives in question and the associated harmonised standards can be downloaded from our internet site.

H250 M40

1.3 Pressure equipment directive

A conformity assessment in accordance with pressure equipment directive has been carried out for the devices described. Conformity is certified by applying the CE mark. The number of the notified body is also stated.

The PED key describes the rating of the devices:

Example: PED/G1/III/H G Gases and vapours 1Fluid group 1 III Category III H Conformity assessment method according to Module H

The PED key identification can be found on the nameplate of the device (for details refer to

Nameplate

INFORMATION!

The stated pressures (PS) and temperatures (TS) only apply as refers to the pressure resistance of the sensor body. As regards the functionality of the entire device, further restrictions of the maximum temperature may need to be observed (e.g. ATEX approval). Devices rated below category I due to their size, do not receive the CE mark in the scope of the PED. These devices are subject to applicable sound engineering practice (SEP).

on page 16).

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H250 M40

SAFETY INSTRUCTIONS

Residual risk

A risk analysis in accordance with the pressure equipment directive has been carried out for the devices . The residual risk is described as follows:

• The devices are designed according to the valid and applicable rules and standards for static operation and their pressure resistance is calculated for the declared maximum pressure and temperature (no calculation for cyclical change).

• Responsibility for the use of the measuring devices with regard to corrosion resistance of the used materials against the measured fluid lies solely with the operator.

• Avoid abrasion.

• Avoid pulsation and cavitation.

• Protect devices from vibration and high-frequency oscillation.

• Draining (backflow) may be delayed due to the float in the measuring tube.

• Implement appropriate measures to counteract external fire hazards

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SAFETY INSTRUCTIONS

1.4 Safety instructions from the manufacturer

1.4.1 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.

H250 M40

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.

1.4.2 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.

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H250 M40

1.4.3 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.

1.4.4 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

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SAFETY INSTRUCTIONS

1.4.5 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.

H250 M40

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.

i RESULT

RESULT

RESULTRESULT This symbol refers to all important consequences of the previous actions.

1.5 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.

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H250 M40

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

Figure 2-1: Scope of delivery

1 Measuring device in ordered version 2 For the ESK4-T version - bar magnet 3 Documentation 4 Certificates, calibration report (supplied to order only) 5 Wrench

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DEVICE DESCRIPTION

2.2 Device version

• H250 with indicator M40

• H250 with M40 indicator with display cut-out for ESK4-T

Figure 2-2: Device version - H250 with M40 indicator

Description of the device version

1. H250/RR/M40

• Local indicator without auxiliary power

• Max. 2 limit switches, type NAMUR, NAMUR safety-oriented or transistor (3-wire)

• Electrical signal output 4...20 mA, HART

• Intrinsically safe (Ex i) or in explosion-proof enclosure (Ex d)

or Fieldbus communication

H250 M40

2. H250/RR/M40

• Additional LCD, measured value and/or flow counter

• 2 configurable binary outputs, limit value or pulse output

• 1 binary input, Start / Stop / Reset flow counter

• 2-wire current output 4…20 mA, HART

communication

• Intrinsically safe (Ex i) or in explosion-proof enclosure (Ex d)

Optional versions:

•

H250 with indicator M40 as high temperature version HT

•

H250 with indicator M40 with increased corrosion protection (special paint finish)

•

H250H for use in horizontal pipelines

•

H250U for use in vertical fall pipes

•

H250F with hygienic measuring tube design for Food & Pharma

•

H250C with PTFE / TFM liner for aggressive media

Indicator options

• M40 - Aluminium, two-layer powder coating (epoxy / polyester)

• M40R - Stainless steel without coating

Offshore wet coating for aluminium or stainless steel on request

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H250 M40

2.2.1 Indicator versions

The M40 indicator can be fitted with various modules.

DEVICE DESCRIPTION

Figure 2-3: Basic version

1 Pointer module 2 Bolts for ESK4 / ESK4A attachment 3 Base plate 4 Module profile 5 Pressure piece for ESK4 / ESK4A attachment 6 Housing cover locking device 7 Ground terminal external

Figure 2-4: Versions K1 / K2 and ESK4 / ESK4A

1 Indicator with K2 contact module 2 Indicator with ESK4 / ESK4A current output 4...20 mA

Both versions can be combined with one another.

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DEVICE DESCRIPTION

Figure 2-5: Version ESK4-T

1 ESK4 / ESK4A connection 2 Module cover 3 Display 4 Display module ESK4-IO 5 Operating keys ^ ↑ 6 Connection binary outputs and reset input 7 Module connection cable

H250 M40

Figure 2-6: Version Fieldbus ESK4-FF / ESK4-PA

1 Basic module with electronic magnet sensors ESK4 / ESK4A 2 Connection bus module 3 DIP switch for bus settings

For more details refer to the supplementary instructions "H250 M40 Foundation Fieldbus" or "H250 M40 Profibus PA".

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H250 M40

2.2.2 Float damping

Float damping is characterised by high standstill times and self-centering. The damping sleeve is made of high performance ceramic or PEEK, depending on the medium and the application. Float damping can also be retrofitted for the user (refer to "Service").

Use of damping

• Generally when CIV and DIV floats are used for gas measurement.

• For TIV floats (H250/RR and H250/HC only) with an operating primary pressure:

EN 1092-1 ASME B16.5 [bar] [psig]

DN50 1/2" ≤0.3 ≤4.4 DN25 1" ≤0.3 ≤4.4 DN50 2" ≤0.2 ≤2.9 DN80 3" ≤0.2 ≤2.9

DN100 4" ≤0.2 ≤2.9

DEVICE DESCRIPTION

Nominal size according to Operating primary pressure

2.2.3 Pointer damping

In principle, the indicating element with its magnetic system contains indicator damping. An additional eddy current brake is advantageous in the event of fluctuating or pulsing flows. The magnets on the eddy current brake surround the pointer vane without touching it, damping its movement. The result is a much steadier pointer position, without distorting the measured value. The eddy current brake can be retrofitted during operation without recalibration. Note the maximum tightening torque (0.12 Nm) for the turnbuckle!

Figure 2-7: Pointer damping

1 Eddy current brake 2 Pointer vane 3 Support 4 Pointer cylinder 5 Turnbuckle, max. tightening torque is 0.12 Nm

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DEVICE DESCRIPTION

2.3 Nameplate

INFORMATION!

Check on the device nameplates, that the device is supplied according to your order.

H250/.././M40/..-Ex P/A: 011123456.001

PED/G1/II/H PTmax: xxx bar

Tag-No.:

PTB 11 ATEX 2012 X

II2G Ex ia IIC T6

IECEx PTB 11.0069 X

amb

: -20°C... +60°C (T6: +40°C)

T Ui = xxV Ii = xxmA Pi = xW

ESK...

Ci = xxnF Li = xuH Ui = xxV Ii = xxmA Pi = xW

Kmin1

Ci = xxnF Li = xuH Ui = xxV Ii = xxmA Pi = xW

Kmin2

Ci = xxnF Li = xuH

MD:201x

PS: xxx bar

TS: xx °C

0035 0102

H250 M40

www.krohne.com

Figure 2-8: Example of a nameplate

1 Device type 2 Manufacturer 3 Notified body 4 Rating data: temperature & pressure rating 5 PED data 6 Ex data 7 Electrical connection data 8 Internet site

Additional markings on the indicator

• SN - serial number

• SO - sales order / item

• PA - production order

• Vx - product configurator code

• AC - article code

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H250 M40

2.4 Description code

The description code consists of the following elements *:

Figure 2-9: Description code

1 Device type

Device type

Device typeDevice type H250 - standard version H250H - horizontal flow direction H250U - flow direction from top to bottom 2 Materials / versions

Materials / versions

Materials / versionsMaterials / versions RR - stainless steel C - PTFE or PTFE/ceramics

HC - Hastelloy Ti - Titanium Mo - Monel In - Inconel F - aseptic version (food) 3 Heating jacket version

Heating jacket version

Heating jacket versionHeating jacket version B - with heating jacket 4 Type series of indicators

Type series of indicators

Type series of indicatorsType series of indicators M40 - Indicator M40 M40R - indicator in stainless steel housing 5 High-temperature version

High-temperature version

High-temperature versionHigh-temperature version HT - version with HT extension 6 Electrical signal output

Electrical signal output

Electrical signal outputElectrical signal output ESK - electrical signal output 4...20 mA (ESK4 / ESK4A)

- optionally available with counter, I/O module and display (ESK4-T)

- Foundation Fieldbus (ESK4-FF)

- Profibus PA (ESK4-PA) 7 Limit switches

Limit switches

Limit switchesLimit switches K1 - one limit switch K2 - two limit switches 8 Explosion protection

Explosion protection

Explosion protectionExplosion protection Ex - Explosion-protected equipment 9 SIL version

SIL version

SIL versionSIL version SE - SIL compliant electronic signal output SK - SIL compliant limit switch

DEVICE DESCRIPTION

* positions which are not needed are omitted (no blank positions)

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DEVICE DESCRIPTION

2.5 Electronic revision

The electronic revision (sticker on the base module ESK4 / ESK4A) indicates the respective hardware/software status of the electronics. All add-on modules (ESK4-T, ESK4-FF and ESK4PA) have an additional sticker indicating their respective firmware version.

Electronic revision Explanations

H250 M40

ER 1.1.x Basic version (cannot be combined with other indicator versions):

ESK4 / current output 4…20 mA with HART (ESK4 HART DD 01.01. AMS10x AMS11x ESK4 HART DD 01.01. PDM6.0 ESK4 HART DTM 1.0.3 FDT1.2)

ER 2.0.x Functional add-on to ER 1.1.x:

ER 2.1.x Functional add-on to ER 2.0.x:

ER 2.2.x Functional add-on to ER 2.1.x:

ER 3.0.x Functional add-on:

Table 2-1: Electronic revision

can be combined with indicator version ESK4 FF / Foundation Fieldbus; (Firmware version FF module from 1.0.2)

can be combined with indicator version ESK4-PA / Profibus PA (Firmware version PA module from 1.0.0) can be combined with indicator version ESK4-T / LCD, binary inputs/outputs (Firmware version T module from 1.1.0)

Support of failure signal (low) according to NE 43 for the ESK4 current output module

Update for HART can be combined with ESK4-FF (Firmware version FF module from 1.0.2) Firmware Version ESK4-PA (... PA module from 1.0.0) Firmware Version ESK4-T (... T module from 1.2.0)

communication from 5.9 to 7.4 including new DD/DTM

communication

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H250 M40

3.1 General installation notes

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 device in a dry, dust-free location.

• Avoid direct exposure to the sun.

• Store the measuring device in the original packaging.

• The permissible storage temperatures for standard devices are: -40...+80°C / -40...+176°F

INSTALLATION

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INSTALLATION

3.3 Installation conditions

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 directive VDI/VDE 3513, sheet 3.

H250Hs are installed horizontally and H250U devices are installed vertically with the flow direction from top to bottom.

•

A straight unimpeded inlet run of ≥ 5 DN upstream of the device and a straight outlet run of ≥ 3 DN downstream of the device are recommended.

•

Screws, bolts and gaskets are to be provided by the customer and must be selected in accordance with the pressure rating of the connection or the operating pressure.

•

The inner diameter of the flange deviates from the standard dimensions. Flange seal standard DIN 2690 or ASME B16.21 can be applied.

•

Align the gaskets. Tighten the nuts with the tightening torques of the appropriate pressure rating.

For devices with PTFE liner or ceramic liner and PTFE raised faces, refer to chapter "Tightening torques".

•

Control devices are to be positioned downstream of the measuring device.

•

Shutoff devices are preferably to be positioned upstream of the measuring device.

•

Before connecting, blow or flush out the pipes leading to the device.

•

Piping for gas flow need to be dried before the device is installed.

•

Use connectors suitable for the particular device version.

•

Align the piping centrically with the connection bores on the measuring device so they are free of stresses.

•

If necessary, the piping has to be supported to reduce the vibrations transmitted to the measuring device.

•

Do not lay signal cables directly next to cables for the power supply.

H250 M40

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H250 M40

INSTALLATION

Minimum distance between devices

When several devices are installed next to each other, a minimum distance of > 300 mm / 11.8" between the devices is necessary.

Figure 3-1: Minimum distance between devices

Take special note of the installation position for the H250H with horizontal flow direction:

Figure 3-2: Installation position for H250H

In order to comply with thermal parameters and measuring accuracy, H250H flowmeters for horizontal installation are to be installed in the pipeline so that the display is located on the side of the measuring tube. The maximum product and ambient temperatures indicated as well as the measuring accuracy are based on lateral installation of the indicator.

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INSTALLATION

3.3.1 Tightening torques

For devices with PTFE liner or ceramic liner and PTFE raised face, tighten the flange threads with the following torques:

Nominal size according to Stud bolts Max. torque

EN 1092-1 ASME B16.5 EN ASME EN 1092-1 ASME 150 lb

DN PN Inch lb 150 lb 300 lb Nm ft*lbf Nm ft*lbf

15 40 1/2" 150/300 4x M12 4x 1/2" 4x 1/2" 9.8 7.1 5.2 3.8

25 40 1" 150/300 4x M12 4x 1/2" 4x 5/8" 21 15 10 7.2

50 40 2" 150/300 4x M16 4x 5/8" 8x 5/8" 57 41 41 30

80 16 3" 150/300 8x M16 4x 5/8" 8x 3/4" 47 34 70 51

100 16 4" 150/300 8x M16 8x 5/8" 8x 3/4" 67 48 50 36

Table 3-1: Tightening torques

3.3.2 Magnetic filters

H250 M40

The use of magnetic filters is recommended when the medium contains particles which can be influenced magnetically. The magnetic filter is to be installed in the flow direction upstream of the flowmeter. Bar magnets are positioned helically in the filter to provide optimal efficiency at low pressure loss. All of the magnets are coated individually with PTFE to protect against corrosion. Material: 1.4404 / 316L

Figure 3-3: Types of magnetic filters

1 Type F - fitting part with flange - overall length 100 mm / 4" 2 Type FS - fitting part without flange - overall length 50 mm / 2"

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H250 M40

3.3.3 Heat insulation

CAUTION!

The indicator housing may not be heat-insulated. The heat insulation 3 may only reach as far as the housing fastening 4.

Figure 3-4: Heat insulation

1 Standard indicator M40 2 Indicator with HT extension

INSTALLATION

CAUTION!

The heat insulation 1 may only reach to the rear of the housing 2. The area around the cable entries 3 must be freely accessible.

Figure 3-5: Heat insulation - cross-section

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ELECTRICAL CONNECTIONS

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.

H250 M40

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.

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H250 M40

ELECTRICAL CONNECTIONS

4.2 Electrical connection for indicator M40

4.2.1 Connection of the limit switches K1/K2

The M40 indicator can be fitted with a maximum of two limit switches. The limit switch operates as a proximity switch which is activated inductively by the semicircular metal vane of the pointer. The switching points are set using the contact pointers. The position of the contact pointers is indicated on the scale.

Figure 4-1: Design of limit switch module

1 MIN contact 2 MAX contact 3 Locking screw 4 Peak value 5 Connection terminal

The connection terminals have a pluggable design and can be removed to connect the cables. The built-in limit switch types are shown on the nameplate of the indicator.

Contact MIN MAX

Terminal number 1 2 3 4 5 6

Connection 2-wire NAMUR - + - +

Connection 3-wire + - + -

Connection Reed SPST + - + -

Table 4-1: Electrical connection of the limit switches

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ELECTRICAL CONNECTIONS

Connection diagram for the limit switches

Figure 4-2: Connection terminals for limit switches

1 Limit switch 2-wire NAMUR 2 Limit switch 3-wire 3 Limit switch Reed SPST 4 Terminal connection of Min. contact 5 Terminal connection of Max. contact 6 3-wire load 7 NAMUR isolated switching amplifier 8 3-wire power supply

H250 M40

Limit setting

Figure 4-3: Limit setting

1 Contact pointer MAX 2 Contact pointer MIN 3 Locking screw (max. tightening torque is 0.2 Nm) 4 Scale support

Setting is carried out directly via contact pointers 1 and 2:

• Pull the upper scale support 2 mm / 0.08" flexibly upwards and pull out the scale from its

locking point to the side.

• Loosen the locking screw 3 slightly.

• Slide in the scale up to the locking point.

• Set contact pointers 1 and 2 to the desired switching point.

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H250 M40

ELECTRICAL CONNECTIONS

After the setting:

• Pull the upper scale support 2 mm / 0.08" flexibly upwards and pull out the scale again from

its locking point to the side.

• Tighten the locking screw 3 with max. 0.2 Nm.

• Slide in the scale up to the locking point.

CAUTION!

If the maximum torque (0.2 Nm) is exceeded, the locking screw can be torn off during tightening!

Definition of switch contact

Figure 4-4: Definition of switch contact

1 MIN contact 2 MAX contact 3 Pointer vane with switching vane

If the pointer vane goes into the slot, an alarm is triggered. If the pointer vane is outside of the proximity switch, a wire break in a NAMUR contact also triggers the alarm.

The 3-wire limit switch does not have any wire break detection.

Figure 4-5: Definition MIN-MIN - MAX-MAX

1 MIN 2 contact or MAX 1 contact 2 MIN 1 contact or MAX 2 contact

Contact Type Current consumption

MIN 1 NAMUR ≤ 1mA MIN 2 NAMUR ≤ 1mA MAX 1 NAMUR ≥ 3mA MAX 2 NAMUR ≥ 3mA

Table 4-2: Current consumption in the position shown:

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ELECTRICAL CONNECTIONS

4.2.2 Current output ESK4 / ESK4A

The connecting terminals of the ESK4 / ESK4A have a pluggable design and can be removed in order to connect the cables.

Figure 4-6: ESK4 / ESK4A connection

1 Current output of ESK4 / ESK4A 2 Power supply 14...30 VDC 3 Measuring signal 4...20 mA

4 External load, HART

communication

H250 M40

Power supply M40 with galvanic isolation

Wiring must be planned with great care when it comes to connecting other devices such as evaluation units or process control. Internal connections in these devices (e.g. GND with PE, mass loops) may lead to non-permitted voltage potentials which could negatively affect the function of the converter itself or that of a device connected to it. In such cases a protected extralow voltage (PELV) is recommended.

Figure 4-7: Power supply M40 with galvanic isolation

1 Terminal connection 2 Converter supply isolator with galvanic isolation 3 Power supply (refer to isolator information) 4 Measuring signal 4...20 mA

5 External load, HART

communication

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H250 M40

ELECTRICAL CONNECTIONS

Power supply

INFORMATION!

The supply voltage has to be between 14 VDC and 30 VDC. This is based on the total resistance of the measuring loop. To calculate this, the resistance of each component in the measuring loop (not including the device) must be added up.

The required supply voltage can be calculated using the following formula:

= RL * 24 mA + 14 V

ext.

with U

= minimum supply voltage

ext.

= total measuring loop resistance

INFORMATION!

The power supply has to be able to supply a minimum of 30 mA.

HART

HART® communication

HARTHART

When HART® communication is carried out with the ESK4, the analogue measured data transmission (4...20 mA) is not impaired in any way.

Exception for multidrop operation. In multidrop operation a maximum of 15 devices with HART function can be operated in parallel, whereby their current outputs are switched to inactive (I approx. 4 mA per device).

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ELECTRICAL CONNECTIONS

Load for HART® communication

INFORMATION!

For HART

The maximum load resistance is calculated as follows:

communication a load of at least 230 Ω is required.

DANGER!

Use a twisted two-core cable to prevent electrical interference from impeding the DC output signal. In some cases a shielded cable may be necessary, e.g if noise levels higher than the NE 21 specification are anticipated.

H250 M40

Configuration

The ESK can be configured via HART® communication. DD (Device Description) for AMS and PDM

as well as a DTM (Device Type Manager) for PACTware They can be downloaded free of charge from the website of the manufacturer.

The current flow rate can be transmitted using the integrated HART counter can be configured. Two limit values can be monitored. The limit values are assigned either to flow values or to the counter overflow.

are available for the configuration.

communication. A flow

Self monitoring - Diagnostics

During both start-up and operation, a wide variety of diagnostic functions are performed cyclically in the ESK4 / ESK4A in order to guarantee function reliability. When an error is detected, a failure signal (high) is activated (current > 21 mA, typically 22 mA) via the analogue

output. In addition more detailed information can be requested via HART signal is not activated for information and warnings.

(CMD#48). The failure

Diagnostic functions (Monitoring):

• Plausibility of FRAM data

• Plausibility of ROM data

• Working range of internal reference voltages

• Signal detection of the measuring range of the internal sensors

• Temperature compensation of the internal sensors

• Calibration based on the application

• Plausibility of counting value

• Plausibility of physical unit, system and selected unit

For ESK4A (HART

7) the diagnosis is reported in compliance with NE 107.

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H250 M40

4.2.3 ESK4-T limit outputs

Once the housing cover has been unscrewed, the scale can be removed. The connection terminals have a pluggable design and can be removed to connect the cables.

ELECTRICAL CONNECTIONS

Figure 4-8: Position of the connection terminals

1 Binary output 1 2 ESK4 / ESK4A power supply / current output 3 Binary output 2 4 Binary input

The binary inputs/outputs are electrically isolated from each other and from the ESK4 / ESK4A current output.

INFORMATION!

The binary inputs/outputs can only be operated if the power supply is applied to ESK4 / ESK4A terminal 11+ and 12-. The binary inputs/outputs are inactive by default and must thus be activated prior to first use (for details refer to ESK4-T menu on page 46

Connection binary outputs

Connection binary outputsConnection binary outputs

In accordance with the desired signal transmission, select one of the following connection types for binary outputs B1 and B2:

• NAMUR (DC interface acc. to EN 60947-5-6)

• Transistor output (passive, Open Collector)

Binary output B1 B2

Terminal no. 1 2 3 4 5 6

Connection NAMUR + - + -

Connection transistor output + B

Table 4-3: Terminal assignment of the binary output

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+ B

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ELECTRICAL CONNECTIONS

Figure 4-9: Connection switching output

1 NAMUR terminal connection 2 Isolated switching amplifier 3 OC switch output terminal connection 4 Power supply U

5 Load R

ext.

H250 M40

NC contact NO contact

Switching value reached < 1 mA > 3 mA

Switching value not reached > 3 mA < 1 mA

Table 4-4: Value range for NAMUR

Value range applies only when connected to a switching amplifier with the following reference values:

• Open-circuit voltage U0 = 8.2 VDC

• Internal resistance R

Signal voltages UL [V] UH [V]

via load R

Table 4-5: Value range for transistor output

Signal currents IL [mA] IH [mA]

Category 2 0 2 20 110

Table 4-6: Value range for transistor output

= 1 kΩ

lower limit upper limit lower limit upper limit

0 2 16 30

lower limit upper limit lower limit upper limit

To ensure the value ranges, a load RL between 250 Ω and 1 kΩ is recommended for the passive transistor output with a nominal voltage of 24 VDC.

If other loads are used, caution is advised as the range of values of the signal voltages then no longer corresponds to the range of values for the inputs of process control systems and controls (DIN IEC 946).

CAUTION!

The upper limit of the signal current must not be exceeded as this may damage the transistor output.

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H250 M40

4.2.4 ESK4-T pulse output

INFORMATION!

The binary outputs can also be operated as pulse outputs. When using the binary outputs as a pulse output, two separate signal circuits are required. Each signal circuit requires its own power supply. The total resistance 4 must be adapted so that the total current I

Figure 4-10: Electrical connection of pulse output

1 Terminal for power supply - current output 2 Terminal B2 3 Flow measurement 4...20 mA 4 Pulse output load e.g. counter 5 Power supply for ESK4 6 Power supply for pulse output

ELECTRICAL CONNECTIONS

does not exceed 100 mA.

tot

The pulse output B2 is a passive "open collector" output which is electrically isolated from the current output and output B1. It can be operated as a low-resistance output or as a NAMUR output.

Figure 4-11: Data for pulse output

= 10 Hz

1 f

max

2 t

3 t

off

The pulse width t

can be configured from 50...500 ms in the indicator menu.

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ELECTRICAL CONNECTIONS

4.2.5 ESK4-T binary input

The binary input can be used to control the internal flow counter (start/stop/reset).

Binary input B3

Terminal no. 7 8

Connection + -

Table 4-7: Value range for NAMUR

H250 M40

Figure 4-12: Binary input

1 Function active HI 2 Function active LO

This binary input can be activated in the menu of the indicator and can be configured to ACTIVE HI or ACTIVE LO.

If the input is set as ACTIVE LO, an interruption causes the counter to be reset.

For further information on configuration of each function refer to

Input voltage UL [V] UH [V]

lower limit upper limit lower limit upper limit

Terminal (7) (8) 0 2 16 30

Table 4-8: Value range

The binary input has an internal resistance R

of 20 kΩ.

ESK4-T menu

on page 46.

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H250 M40

ELECTRICAL CONNECTIONS

4.2.6 ESK4-FF / ESK4-PA fieldbus communication

Figure 4-13: ESK4-FF / ESK4-PA fieldbus communication

1 FF HSE Bus / Profibus DP 2 Linking device / bus coupler 3 FF H1 Bus / Profibus PA, 2-wire with shielding 4 H250/M40/ESK4-FF / H250/M40/ESK4-PA

ESK4-FF / ESK4-PA

• 2-wire, bus-supplied

• Polarity protected

• Bus voltage 9...32 VDC

• Nominal current 16 mA

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ELECTRICAL CONNECTIONS

4.2.7 Harting HAN 7D connection

Figure 4-14: Terminal assignment

1 Terminal assignment of HAN® 7D - View of plug connection

H250 M40

1 Pin number HAN® 7D

K1/K2 NAMUR contacts

R1/R2 Reed contacts

ESK4/ESK4A Terminal number

NAMUR Reed

1 2 NAMUR MIN (-) 2 Reed MIN - 1 1 2 2 NAMUR MIN (+) 2 Reed MIN - 2 3 3 3 NAMUR MAX (-) 3 Reed MAX - 4 4 4 3 NAMUR MAX (+) 3 Reed MAX - 5 6 5 - - 4 4...20mA (+) 11 6 - - 4 4...20mA (-) 12

7 - - -

8 - - -

Table 4-9: Terminal assignment - Harting plug to terminal number

Combinations of K1 / K2 and ESK4 / ESK4A are possible.

1 Pin number HAN® 7D

1 5 Binary output B1 open coll. (+) 1 2 5 Binary output B1 open coll. (-) 3 3 7 Binary output B2 open coll. (+) 4 4 7 Binary output B2 open coll. (-) 6 5 6 4...20mA (+) 11 6 6 4...20mA (-) 12

7 -

8 -

Table 4-10: Terminal assignment - Harting plug to terminal number for ESK4-T

ESK4-T Terminal number

INFORMATION!

No Harting connection for module ESK4-FF/PA is provided and is only available on request.

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H250 M40

4.3 Grounding connections

Figure 4-15: Grounding connections

1 Grounding connection on the indicator 2 Outer grounding connection

DANGER!

The grounding wire may not transfer any interference voltage. Do not use this grounding cable to ground any other electrical devices.

ELECTRICAL CONNECTIONS

4.4 Ingress protection

The measuring device meets all requirements of ingress protection IP66/68.

DANGER!

After all servicing and maintenance work on the measuring device, the specified protection class must be ensured again.

Therefore it is essential to observe the following points.

• Use only original gaskets. They must be clean and free of any damage. Defective gaskets must

be replaced.

• The electrical cables must be undamaged and must comply with regulations.

• The cables must be laid with a loop 3 upstream of the measuring device to prevent water

from getting into the housing.

• The cable feedthroughs 2 must be tightened.

• Close the unused cable feedthroughs using blanking plugs 1.

Figure 4-16: Laying the cable

1 Use blanking plugs if no cable is routed through 2 Tighten cable feedthrough firmly 3 Lay the cable in a loop

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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 ensure that the pipelines are carefully evacuated.

•

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.

A minimum operating pressure (primary pressure) is necessary to operate the device:

Medium Pressure loss : operating pressure

H250 M40

Liquids 1 : 2

Gases without float damping 1 : 5

Gases with float damping 1 : 2

5.2 Indicator ESK4-T

INFORMATION!

The device is always preset for the user and his application.

Start After the device is switched on, the display shows

• "INITIALISING"

• Firmwareversion IO-Modul

The device first performs a self-test. Here, all of the parameters preset for the customer are analysed and checked for plausibility. The device then switches to measuring mode and indicates the current measured value.

Operation

INFORMATION!

The device is low-maintenance Comply with the application limits with regard to temperature of the medium and ambient temperature.

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H250 M40

6.1 ESK4 / ESK4A - Loop Check Mode

The ESK4 / ESK4A is equipped with a loop check function, enabling a simple test of the entire

4…20 mA current loop.

It is activated and operated using a microswitch 1.

OPERATION

Figure 6-1: Position of the microswitch

CAUTION!

When activating the loop check mode, ensure that no alarms are unintentionally triggered in the downstream system components.

Figure 6-2: Loop Check Mode

• Press and hold the microswitch 1 for more than 6 seconds to activate the loop check mode 3.

The current output jumps to constant 4 mA.

• Change the current output from constant 4 mA to constant 20 mA as often as you like by briefly

pressing it (less than 6 seconds) to check the function of the measuring circuit.

• Exit loop check mode by holding down the microswitch (longer than 6 seconds). The current

output jumps back to measuring mode 2.

INFORMATION!

If the microswitch has not been pressed for longer than 60 seconds, the ESK4 / ESK4A automatically returns to measuring mode 2.

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OPERATION

6.2 Operating elements ESK4-T

H250 M40

The device is operated with the cover on the front open, using the mechanical keys cover closed using a bar magnet

bar magnet.

bar magnetbar magnet

keys, or with the

keyskeys

CAUTION!

The switching point of the magnetic sensors is directly at the height of the corresponding circle (see figure). Only touch the circle vertically and from the front using the bar magnet. Touching it from the side may cause an error in the measurement as the float position is recorded by the magnetic field sensors.

Figure 6-3: Display and operating elements

1 Enter button (circuit for bar magnet) 2 Up button (circuit for bar magnet) 3 Right button (circuit for bar magnet)

The mechanical keys and keys for the bar magnet have the same functionality. In this documentation the keys are represented as symbols to describe the operating functions:

Key Symbol

1 Enter ^^^^ 2 up ↑ 3 right →

Table 6-1: ESK4-T operation keys

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H250 M40

6.3 Basic principles of operation ESK4-T

6.3.1 Description of the operating keys

OPERATION

→

↑

^^^^

Table 6-2: Description of the operating keys

Switch from measuring mode to menu mode

Switch to one menu level lower

Open menu item and activate change mode

Confirm query whether data should be accepted

In change mode:

In change mode: Move the input cursor one position to the right. After the last digit the

In change mode:In change mode: input cursor jumps back to the beginning.

Change between the menu items within a menu level

In measuring mode:

In measuring mode: Switch between measured values and error messages

In measuring mode:In measuring mode:

In change mode:

In change mode: Changing parameters or settings. Run through the available characters

In change mode:In change mode: (including decimal point.

In measuring mode:

In measuring mode: Switch between measured value display and error messages /

In measuring mode:In measuring mode: warnings

Switch to one menu level higher

Return to measuring mode with a query whether the data should be accepted

Cancel the query, whether data should be accepted

6.3.2 Navigation within the menu structure

Navigate through the menu using the →, ↑ and ^^^^ keys. Pressing the → key takes you one menu lower. Using the ↑ key takes you one menu item higher (e.g. from 1 to 2). Pressing the ^^^^ key takes you one menu higher.

If you are already at the lowest level (function level), the key takes you to the change mode, where you can set data and values.

If you are at the first level (main menu), you can use the ^^^^ key to exit the menu mode and return to the measuring mode.

If settings were changed, the query whether they should be saved will appear. Confirm this query with the → key or cancel it with the ^^^^ key.

Measuring

mode

Table 6-3: Navigation within the menu structure

→ Main menu↑→ Submenu↑→ Function↑→ Edit

^^^^ ^^^^ ^^^^ ^^^^

→ ↑ ^^^^

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OPERATION

6.3.3 Change the settings in the menu

Starting operation

Operation is started using the → key.

If an operation lock is set, the code (→ → → ^ ^ ^ ↑ ↑ ↑) must be entered. The code can be set in menu 3.13. The code shown here is set at the factory but not activated. If no key is activated within 5 seconds or an incorrect code is entered, a warning message is displayed and the indication returns to measuring mode.

Exit operation

Operation is exited by pressing the ^^^^ key several times.

If data have been changed:

H250 M40

Save Yes → Changes are accepted. An update is carried out and the display returns to

Save No ^^^^ Changes are discarded and the display returns to measuring mode.

measuring mode.

CAUTION!

Each time parameters or settings are changed, the measuring device carries out an internal plausibility check. If inplausible entries were made, a warning message is shown. If this warning is confirmed with the ^^^^ key, the display returns to the respective menu item without saving the relevant change. A new entry can now be made.

Example: Changing the flow unit from m3/h to l/h

Display Display

Example: 7.2

1x → Fct. 1111

OPERATION

2x ↑ Fct. 3333

INSTALLATION

1x → Fct 3.1111

LANGUAGE

10x ↑ Fct 3.11

F.S.& UNIT

1111

1x → Fct. 3.11.1111

1x → 10.0000

4x ↑ 10000

3x ^^^^ 7200

MEAS’D VALUE

l/h

Confirm with →

deny ^

l/h

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H250 M40

6.4 Overview of the units ESK4-T

Volume units can either represent real operating volumes (no prefix before the unit) or standard volumes virtually converted to reference statuses.

Prefix Volume definition

None

Measured variables Units

Operating volume flow e.g. m3/h or ft3/h Volume flow at standard (norm.) conditions (0°C - 1.013 bara) acc. to DIN 1343 e.g. Nm Volume flow at standard (std.) conditions (15°C - 1.013 bara) acc. to ISO 13443 e.g. Sft

OPERATION

Operating volume flow

Standard (norm.) volume flow

Standard (std.) volume flow

Mass flow g/s g/min g/h -

Operating volume totalizer

Standard (norm.) volume totalizer

Standard (std.) volume totalizer

Mass totalizer kg g t lb

Temperature °C °F K

Table 6-4: Overview of the units ESK4-T

m3/s m3/min m3/h m3/d

L/s L/min L/h -

ft3/s ft3/min ft3/h ft3/d

gal/s gal/min gal/h gal/d

bbl/s bbl/min bbl/h bbl/d

ImpGal/s ImpGal/min ImpGal/h ImpGal/d

Nm3/s Nm3/min Nm3/h Nm3/d

NL/s NL/min NL/h -

Sm3/s Sm3/min Sm3/h Sm3/d

SL/s SL/min SL/h -

Sft3/s Sft3/min Sft3/h Sft3/d

kg/s kg/min kg/h kg/d

- t/min t/h t/d

lb/s lb/min lb/h lb/d

- STon/min STon/h STon/d

- - LTon/h LTon/d

ImpGal gallon bbl bbl (liq)

Sft

STon LTon

l hl

In addition to the predefined units shown here, a user-defined unit can be activated in Menu 3.12 by entering a conversion factor and a unit designation as free text.

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OPERATION

6.5 Error messages ESK4-T

Error messages and warnings are indicated by one of the following symbols in the bottom left corner of the display. The ^^^^ key switches from the measured value display to the display of current errors / warnings. The table below contains a description of possible error messages.

H250 M40

Symbol NE107

Description Consequence

Category

FFFF Failure No measured value available

S Out of specification Measurement available but increasing measurement

M Maintenance required Measurement still sufficiently accurate but

C Check request Device is in test or linearization mode. The output

I Information No influence on the measurement, information only.

Table 6-5: Description of the symbols

Output signal invalid. Error current signal is output.

uncertainty. Device must be checked.

maintenance required.

signal temporarily does not correspond to the measurement.

Error message Description Category Remedy

NOT LINEARIZED Linearization faulty or not

NEW LINEARI. TABLE BAD

LINEARIZATIO UNDER CONFIG

UNIT SYSTEM CONFLICT

TOO FEW ENTRIES The linearization table has

NOT MONOTONOUS The sequence of the

FIRST NOT 0 % The first flow value if the

LAST NOT 100 % The last flow value if the

activated = measuring error

Faulty or missing data in the linearization table = measuring error

The device is in linearization mode = measuring error

The unit for the linearization flow is incompatible with the selected flow type (mass/volume)

too few data points

linearization values is not strictly monotonic increasing

linearization table is not 0%

linearization table is not 100%

S 1

S Correct error, carry out linearization again if

S Check linearization and/or carry it out again

Activate linearization or carry it out again (HART® communication and linearization software are required; the original calibration values must be known), or send the device back to the manufacturer for linearization.

Complete the linearization and activate it (HART® communication and linearization software are required), or send the device back to the manufacturer for linearization.

necessary (HART linearization software are required), or send the device back to the manufacturer for linearization.

Carry out linearization at at least 5 points (HART® communication and linearization software are required), or send the device back to the manufacturer for linearization.

(HART software are required), or send the device back to the manufacturer for linearization.

communication and

communication and linearization

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H250 M40

Error message Description Category Remedy

OPERATION

NO ZERO CAL OF AO

NO F.SC. CAL OF AO

NO TEMP. COMPENSATION

WRONG ELEC.REV. The ER revision of the

OUTPUT NOT LINEARIZED

COUNTER LOST Totalizer value was reset

FRAM WRITE FAULT Internal communication

ROM/FLASH ERROR Memory error detected

RESTART OF DEVICE A device restart has taken

MULTIDROP MODE

CRYSTAL OSC FAULT Internal error in device F The device must be sent back to the manufacturer

REF VOLTAGE FAULT Internal error in device SENSOR A FAULT Internal error in device F 1

SENSOR B FAULT Internal error in device

MEMORY CORRUPTION

AO FIXED The current output is set

AO SATURATED Current output saturated I The current output is saturated at >20.4 mA and is

The current output zero point 4.00mA is not calibrated. = possible measuring error in process control.

The current output 100% =

20.00mA is not calibrated. = possible measuring error in process control.

The sensor temperature compensation of the device is faulty or was not carried out = possible measuring error

ESK4 / ESK4A is not compatible with the addon module, or the ribbon cable connection is not connected properly.

Linearization is not activated = measuring error

by error/overflow

error

during self-test.

place

The HART® multidrop mode is activated. The current output is set to a fixed value of 4.5 mA.

Internal memory error, caused by a hardware or software problem

to a fixed value.

S Perform calibration using ammeter and menu

3.10 or using standard HART control system and poss. external ammeter. Caution: during calibration, switch the measuring point to manual control.

S Perform calibration using ammeter and menu

item 3.11 or using standard HART external ammeter if necessary. Caution: during calibration, switch the measuring point to manual control.

S The device, together with an indication of the

S Check that the ribbon cable fits properly. Check

S 1 Because the reset time is not known: Controlled

F Check whether the display is plugged in correctly

F Restart device. If the error occurs again: send the

I The device has been restarted using menu item

F Restart the device; if the error occurs again the

I The current output is fixed and does not reflect

error, must be sent back to the manufacturer for checking.

module compatibility (for details refer to

Electronic revision

reset of the counter using menu item 1.6.1 or using HART

and restart the device. If the error occurs again: send the device back to the manufacturer with an indication of the error.

device back to the manufacturer with an indication of the error.

1.6.2 since the last time the error messages were reset.

The HART® multidrop mode is activated with selection of a polling address not equal to 0 using menu item 3.7. Polling address 0 reactivates the current output.

with an indication of the error.

device must be sent back to the manufacturer with an indication of the error.

the measured value. This is the case in multidrop mode, with current output test/calibration using

the menu or HART

no longer linked to the measurement.

on page 18).

tools/process control system.

tools/process

tools and

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OPERATION

Error message Description Category Remedy

H250 M40

ERROR TIMEOUT Data not transferred, or

WARNING TIMEOUT I

Table 6-6: Error messages ESK4-T

1 Category can be changed by user.

transferred incorrectly from the ESK to the counter module

6.6 ESK4-T menu

6.6.1 Factory settings

Function Setting

1.1.1 OUTPUT B1 INACTIVE

1.2.1 OUTPUT B2 INACTIVE

1.3.1 PULSE WIDTH 50ms

1.3.2 PULSE/UNIT 1 Pulse/Unit

1.4 DISPLAY MEAS’D VALUE

1.4.2 ROTATION 0°

1.5 TIME CONST 1.0s

1.6.1 COUNTER NO

1.6.2 ERROR NO

1.6.3 RE-INIT IO NO

3.1 LANGUAGE ENGLISH

3.2 FUNCTION B1 INACTIVE

3.3 CONTACT B1 NORM.OPEN

3.4 FUNCTION B2 INACTIVE

3.5 CONTACT B2 NORM.OPEN

3.6 FUNCTION B3 INACTIVE

3.7 MULTIDROP POLLING ADD: 00

3.8 4mA CALIBR. 4.000mA

3.9 20mA CALIBR. 20.000mA

3.10 ALARM CURR. ALARM HIGH

3.11 F.S.& UNIT Application specific

3.11.2 COUNTER Application specific

3.12 USER DEFINED User defined unit / factor

3.13 L.FL.CUTOFF 4% ON; 6% OFF

3.14 DESCRIPTOR Free text

3.15 ENTRY CODE OFF

3.16 DEFAULT VAL. NO

Table 6-7: Factory settings

F Confirm menu item "1.6.3 WRITE INFO I/O".

INFORMATION!

The measuring device has been preset at the factory in accordance with the customer order. Therefore subsequent configuration via the menu is only necessary if the intended use of the device is changed.

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H250 M40

OPERATION

6.6.2 Menu structure

Main menu Submenu 1 Submenu 2

1 OPERATION 1.1 OUTPUT B1 1.1.1 INACTIVE, MEAS.VAL. B1, CNT. VAL. B1, PULSE WIDTH

1.1.2 HYST. B1, PULSE/UNIT

1.2 OUTPUT B2 1.2.1 INACTIVE, MEAS.VAL. B2, CNT. VAL. B2, PULSE WIDTH

1.2.2 HYST. B2, PULSE/UNIT

1.3 PULSE OUTP. 1.3.1 PULSE WIDTH

1.3.2 PULSE/UNIT

1.4 DISPLAY 1.4.1 MEAS'D VALUE, COUNTER, MV/COUNTER, MV&COUNTER,

1.5 TIME CONST -

1.6 RESET 1.6.1 COUNTER

2 TEST & INFO 2.1 4-20mA OUTP 2.1.1 NORMAL OP

2.2 ALARM CURR. ALARM HIGH, ALARM LOW

2.3 OUTPUT B1 2.3.1 NORMAL OP

2.4 OUTPUT B2 2.4.1 NORMAL OP

2.5 INPUT B3 ACTIVE HI, ACTIVE LO, ON, OFF

2.6 DEV. IDENT. 2.6.1 ELEC. REV.

PERCENT

1.4.2 ROTATION

1.6.2 ERROR

1.6.3 WRITE INFO IO

2.1.2 4.0mA

2.1.3 5.6mA

2.1.4 7.2mA

2.1.5 8.8mA

2.1.6 10.4mA

2.1.7 12.0mA

2.1.8 13.6mA

2.1.9 15.2mA

2.1.10 16.8mA

2.1.11 18.4mA

2.1.12 20.0mA

2.1.13 21.6mA

2.3.2 OPEN

2.3.3 CLOSED

2.4.2 OPEN

2.4.3 CLOSED

2.6.2 SN ESK4

2.6.3 PROD. ORDER

2.6.4 DEV. SN.

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OPERATION

Main menu Submenu 1 Submenu 2

2 TEST & INFO 2.7 SOFT.VERSION 2.7.1 FW. ESK4

2.7.2 FW. ESK4 I/O

2.8 TAG NB. 8 characters

2.9 LONG TAG 32 characters

3 INSTALLATION 3.1 LANGUAGE 3.1.1 ENGLISH

3.1.2 DEUTSCH

3.1.3 FRANCAIS

3.1.4 ITALIANO

3.1.5 ESPANOL

3.1.6 CESKY

3.1.7 POLSKI

3.1.8 NEDERLANDS

3.1.9 DANSK

3.2 FUNCTION B1 INACTIVE, SWITCH POINT, COUNT. LIMIT, PULSE OUTP.

3.3 CONTACT B1 NORM.OPEN, NORM.CLOSED

3.4 FUNCTION B2 INACTIVE, SWITCH POINT, COUNT. LIMIT, PULSE OUTP.

3.5 CONTACT B2 NORM.OPEN, NORM.CLOSED

3.6 FUNCTION B3 INACTIVE, ACTIVE HI, ACTIVE LO, STARTH STOPL, STARTL STOPH

3.7 MULTIDROP POLLING ADD.

3.8 4mA CALIBR. 4.000mA

3.9 20mA CALIBR. 20.000mA

3.10 ALARM CURR. OFF, ALARM HIGH, ALARM LOW

3.11 F.S.& UNIT 3.11.1 MEAS'D VALUE

3.11.2 COUNTER

3.12 USER DEFINED 3.12.1 MEAS'D VALUE

3.12.2 COUNTER

3.13 L.FL.CUTOFF 3.13.1 CONTROL ON, CONTROL OFF

3.13.2 ON VALUE

3.13.3 OFF VALUE

3.14 DESCRIPTOR Free text

3.15 ENTRY CODE OFF, ON

3.16 DEFAULT VAL. SET ALL

Table 6-8: Menu structure

H250 M40

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H250 M40

OPERATION

6.6.3 Menu description

1 OPERATION

Selection / Input Explanation

1.1 OUTPUT B1

1.1 OUTPUT B1 Output B1 is a binary switching output. In Fct. 3.2, one of the following functions can be

1.1 OUTPUT B11.1 OUTPUT B1

1.1.1

INACTIVE -

MEAS.VAL. B1 Switching point of flow value

selected for this output: INACTIVE, SWITCH POINT, COUNT. LIMIT, PULSE OUTP.

One of the following functions can be selected as contact type in Fct. 3.3: NORM.OPEN 1 / NORM.CLOSED 2

Value range: 0.0…full scale range The switching point is entered in flow units. If the current flow value exceeds this pre-determined switching point, output B1 changes its binary state 3.

In Fct. 1.1.2 a hysteresis can be specified additionally.

CNT. VAL. B1 Switching point of totaliser value

PULSE WIDTH Pulse weight (pulse/unit)

1.1.2 HYST. B1 Hysteresis for the switching point of the flow value

Value range: 0.0…counter limit The switching point is entered in volume or mass units. If the the current counter value exceeds this pre-determined switching point, output B1 changes its binary state 3. There is no hysteresis setting for the switching point of the counter value.

The weight is only displayed here.

A configuration takes place in Fct. 1.3.1 PULSE WIDTH, 1.3.2 PULSE/UNIT and 3.11.2 COUNTER.

Value range: 0.0…switching point If the current flow value exceeds the pre-determined switching point from Fct. 1.1.1, output B1 changes its binary state 3. In order for output B1 to change its binary state back to the initial setting, the switching point made smaller by the hysteresis must be undershot 4.

Example:

Example:Example: In 1.1.1, a switching point of 200 L/h is set. The possible value range for the hysteresis is then 0.0…200 L/h. With a hysteresis value of 0, the switching point has no hysteresis (3=4). If a hysteresis value of 20 L/h is entered, output B1 changes its binary state to the initial setting, if it drops below 180 L/h 4.

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OPERATION

H250 M40

Selection / Input Explanation

1.2 OUTPUT B2

1.2 OUTPUT B2 Output B2 is a binary switching output. In Fct. 3.4, one of the following functions can be

1.2 OUTPUT B21.2 OUTPUT B2

1.2.1

INACTIVE -

MEAS.VAL. B2 Refer to MEAS.VAL. B1

CNT. VAL. B2 Refer to CNT. VAL. B1

PULSE WIDTH B2 Refer to PULSE WIDTH B1

1.2.2 HYST. B2 Refer to HYST. B1

1.3 PULSE OUTP.

1.3 PULSE OUTP. -

1.3 PULSE OUTP.1.3 PULSE OUTP.

1.3.1 PULSE WIDTH

50ms Ti = 50 ms; f

100ms Ti = 100 ms; f

200ms Ti = 200 ms; f

500ms Ti = 500 ms; f

1.3.2 PULSE/UNIT 0.001...1000

selected for this output: INACTIVE, SWITCH POINT, COUNT. LIMIT, PULSE OUTP.

One of the following functions can be selected as contact type in Fct. 3.5: NORM.OPEN 1 / NORM.CLOSED 2

In Fct. 1.2.2 a hysteresis can be specified additionally.

A configuration takes place in Fct. 1.3.1 PULSE WIDTH, 1.3.2 PULSE/UNIT and 3.11.2 COUNTER.

= 10 Hz

max. pulses/h = 36000

max. pulses/h = 18000

max. pulses/h = 9000

max. pulses/h = 3600

max

= 5 Hz

= 2.5 Hz

= 1 Hz

Pulse per volume or mass unit of counter (setting in Fct. 3.11.2), which can be output via one of the binary outputs. The maximum frequency for the pulse output (refer to Fct 1.3.1) cannot be exceeded, even at maximum flow rate (full scale).

Example:

Example:Example: Final value Q

If the factor 1 is entered, 1 pulse/litre = 1200 pulses are generated in one hour at maximum flow rate. Number of max. permissible pulses:

= 1200 L/h; volume unit of counter = Litre; pulse width = 100ms;

max

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H250 M40

1.4 DISPLAY

1.4 DISPLAY Different measured values can be selected for permanent or alternating display.

1.4 DISPLAY1.4 DISPLAY

1.4.1 MEAS’D VALUE Permanent display of flow in flow units

COUNTER Permanent display of totalizer

MV/COUNTER Alternating display of flow value in flow units and totalizer

MV&COUNTER Simultaneous display of flow value and totalizer

PERCENT Permanent display of flow value in percent

1.4.2 ROTATION 0° The reading is not rotated. 90° The reading on the display is rotated by 90°. 180° The reading on the display is rotated by 180°. 270° The reading on the display is rotated by 270°.

1.5 TIME CONST

1.5 TIME CONST 0.0...20.0s

1.5 TIME CONST1.5 TIME CONST

The reading on the display can be rotated.

Given in seconds The output variables (value of the current loop and indicated flow value) follow the current process by the value set here (in seconds) with a time delay.

OPERATION

Note:

Note:Note: If the current flow is polled via HART

also played back with a delay.

1.6 RESET

1.6 RESET Local resetting of totalizer and acknowledgement of warnings.

1.6 RESET1.6 RESET

1.6.1 COUNTER Confirming with "YES" resets the value of the totalizer to 0.0.

1.6.2 ERROR Confirming with "YES" acknowledges all existing warnings.

1.6.3 RE-INIT IO As a general rule, data is transferred from the counter module to the ESK4 and vice versa

Table 6-9: Menu description - 1 OPERATION

There is always a safety prompt ("YES / NO"), to avoid accidental resetting.

Note:

Note:Note: External resetting of the totalizer can be installed with the binary input B3.

Note:

Note:Note: Confirming with "YES" acknowledges existing errors and warnings.

when the device starts. For safety, another data transmission can be performed by selecting this menu item and confirming with "YES".

communication, the transferred measured value is

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OPERATION

2 TEST & INFO

Selection / Input Explanation

2.1 4-20mA OUTP

2.1 4-20mA OUTP Testing the current loop by setting various current values.

2.1 4-20mA OUTP2.1 4-20mA OUTP

Note:

Note:Note: The test is not available in HART

Attention:

Attention:Attention: During the test, the value of the current loop does not follow the current process.

2.1.1 NORMAL OP The value of the current loop follows the current process.

2.1.2 4.0mA The value of the current loop no longer follows the current process.

2.1.3 5.6mA

2.1.4 7.2mA

2.1.5 8.8mA

2.1.6 10.4mA

2.1.7 12.0mA

2.1.8 13.6mA

2.1.9 15.2mA

2.1.10 16.8mA

2.1.11 18.4mA

2.1.12 20.0mA

2.1.13 21.6mA

2.2 OUTPUT B1

2.2 OUTPUT B1 <3.6 / >21 mA

2.2 OUTPUT B12.2 OUTPUT B1

2.3 ALARM CURR.

2.3 ALARM CURR. Testing the binary switching output B1 by changing its binary status.

2.3 ALARM CURR.2.3 ALARM CURR.

It is set to the selected current value.

Testing the alarm current HIGH/LOW according to the settings in Fct. 3.10.

multi-drop mode (refer to Fct. 3.7)

H250 M40

Attention:

Attention:Attention: During the test, the binary status does not correspond to the current process.

2.3.1 NORMAL OP The binary status of the switching output corresponds to the current process.

2.3.2 OPEN The binary status of the switching output no longer corresponds to the current process.

2.3.3 CLOSED

2.4 OUTPUT B2

2.4 OUTPUT B2 Refer to 2.2 OUTPUT B1

2.4 OUTPUT B22.4 OUTPUT B2

2.4.1 NORMAL OP

2.4.2 OPEN

2.4.3 CLOSED

2.5 INPUT B3

2.5 INPUT B3 The current binary status of the binary input B3 is displayed. External switching of the

2.5 INPUT B32.5 INPUT B3

The selected status is tested.

voltage applied to input B3 activates a change of the displayed binary status.

Note:

Note:Note: A reaction to the switching of the voltage applied to input B3 only occurs if the function B3 is activated (refer to Fct. 3.6).

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H250 M40

Selection / Input Explanation

2.6 DEV. IDENT.

2.6 DEV. IDENT. Information for device identification

2.6 DEV. IDENT.2.6 DEV. IDENT.

2.6.1 ELEC. REV. Electronic revision

2.6.2 SN ESK4 Serial number ESK4

2.6.3 PROD. ORDER Production order for the complete flowmeter

2.6.4 DEV. SN. Serial number for the complete flowmeter

2.7 SOFT.VERSION

2.7 SOFT.VERSION Information about software revision status

2.7 SOFT.VERSION2.7 SOFT.VERSION

2.7.1 FW. ESK4 Software revision status for device insert ESK4-Basic

2.7.2 FW. ESK4 IO Software revision status for optional add-on module ESK4-T

2.8 TAG NB.

2.8 TAG NB. 8 digits

2.8 TAG NB.2.8 TAG NB.

Measuring point identifier Alphanumerical characters. Up to eight digits are possible.

2.9 LONG TAG 32 digits

Measuring point identifier Alphanumerical characters. Up to 32 digits are possible.

Table 6-10: Menu description - 2 TEST & INFO

OPERATION

3 INSTALLATION

Selection / Input Explanation

3.1 LANGUAGE

3.1 LANGUAGE Language selection for the displayed menu texts.

3.1 LANGUAGE3.1 LANGUAGE

3.1.1 ENGLISH The menu texts are displayed in the selected language.

3.1.2 DEUTSCH

3.1.3 FRANCAIS

3.1.4 ITALIANO

3.1.5 ESPANOL

3.1.6 CESKY

3.1.7 POLSKI

3.1.8 NEDERLANDS

3.1.9 DANSK

3.2 FUNCTION B1

3.2 FUNCTION B1 -

3.2 FUNCTION B13.2 FUNCTION B1

INACTIVE The binary switching output B1 has no function.

SWITCH POINT The binary switching point B1 acts as a limit switch depending on the current flow value.

Configuration of the switching point is in Fct. 1.1.1 MEAS.VAL. B1.

COUNT. LIMIT The binary switching point B1 acts as a limit switch depending on the current counter

PULSE OUTP. The binary switching point B1 acts as a pulse output depending on the current flow value.

value.

Configuration of the switching point is in Fct. 1.1.1 MEAS.VAL. B1.

Pulses of a maximum of up to 10 Hz can be generated. The configuration is in Fct. 1.3.1 PULSE WIDTH and 1.3.2 PULSE/UNIT.

Note:

Note:Note: The configuration in Fct. 1.3.1 and Fct. 1.3.2 applies to both pulse outputs. If both B1 and B2 are configured as pulse outputs, both binary outputs behave in exactly the same way.

3.3 CONTACT B1

3.3 CONTACT B1 -

3.3 CONTACT B13.3 CONTACT B1

NORM.OPEN The contact type of the binary switching output B1 is "normally open".

NORM.CLOSED The contact type of the binary switching output B1 is "normally closed".

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OPERATION

H250 M40

Selection / Input Explanation

3.4 FUNCTION B2

3.4 FUNCTION B2 -

3.4 FUNCTION B23.4 FUNCTION B2

INACTIVE Refer to FUNCTION B1

SWITCH POINT Refer to FUNCTION B1

COUNT. LIMIT Refer to FUNCTION B1

PULSE OUTP. Refer to FUNCTION B1

3.5 CONTACT B2

3.5 CONTACT B2 -

3.5 CONTACT B23.5 CONTACT B2

NORM.CLOSED Refer to CONTACT B1

NORM.OPEN Refer to CONTACT B1

3.6 FUNCTION B3

3.6 FUNCTION B3 -

3.6 FUNCTION B33.6 FUNCTION B3

INACTIVE The binary switching input B3 has no function.

ACTIVE HI The internal flow counter is reset to 0.0 if there is an H level at input B3 for at least 100 ms.

ACTIVE LO The internal flow counter is reset to 0.0 if there is an L level at input B3 for at least 100 ms.

STARTH STOPL The counter is started by creating an H level at input B3 and stopped by creating an L level

STARTL STOPH The counter is started by creating an L level at input B3 and stopped by creating an H level

3.7 MULTIDROP

3.7 MULTIDROP 0…15

3.7 MULTIDROP3.7 MULTIDROP

Configuration of the switching point is in Fct. 1.2.1 MEAS.VAL. B2.

The configuration is in Fct. 1.3.1 PULSE WIDTH and 1.3.2 PULSE/UNIT.

at input B3.

Polling address for HART® multi-drop mode When the address is 0, the HART

Attention:

Attention:Attention: When the HART

(fixed current value of "4.5mA") and no longer follows the current process.

3.8 4mA CALIBR.

3.8 4mA CALIBR. D/A calibration for lower range value (4mA)

3.8 4mA CALIBR.3.8 4mA CALIBR.

Note:

Note:Note: This function is not available in HART

Attention:

Attention:Attention: During calibration, the value of the current loop does not follow the current process.

If an ampere meter detects in the 4...20 mA loop a deviation from the desired value of "4.000mA", the measured value must be entered. The correction value is accepted following the query to save and confirm with yes.

3.9 20mA CALIBR.

3.9 20mA CALIBR. D/A calibration for the full scale value (20 mA)

3.9 20mA CALIBR.3.9 20mA CALIBR.

Note:

Note:Note: This function is not available in HART

Attention:

Attention:Attention: During calibration, the value of the current loop does not follow the current process. If an ampere meter detects in the 4...20 mA loop a deviation from the desired value of "20.000mA", the measured value must be entered. The correction value is accepted following the query to save and confirm with yes.

3.10 ALARM CURR.

3.10 ALARM CURR. -

3.10 ALARM CURR.3.10 ALARM CURR.

OFF Error indication via the current loop is deactivated. The current loop follows the current

process.

multi-drop mode (Address 1…15) is activated, the current loop is inactive

multi-drop mode is disabled.

multi-drop mode.

Note:

Note:Note: This function is not available in HART

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multi-drop mode.

Page 55

H250 M40

OPERATION

Selection / Input Explanation

ALARM HIGH Error indication via the current loop is activated (failure signal "high" acc. to NE43).

Note:

Note:Note: This function is not available in HART

ALARM LOW Error indication via the current loop is activated (failure signal "low" acc. to NE43).

Note:

Note:Note:

1) This function is not available in HART

2) This function is supported from ER 2.2.x.

3.11 END&UNIT

3.11 END&UNIT By changing the unit, the respective final value is scaled accordingly. Depending on

3.11 END&UNIT3.11 END&UNIT calibration, either units for volume or mass flow measurement are available for selection.

3.11.1 MEAS'D VALUE For units for volume flow or mass flow, refer to

3.11.2 COUNTER For units for volume counter or mass counter and pulse output, refer to

units ESK4-T

3.12 USER DEFINED

3.12 USER DEFINED User-defined unit with conversion to calibrated unit.

3.12 USER DEFINED3.12 USER DEFINED

3.13 L.FL.CUTOFF

3.13 L.FL.CUTOFF L.FL.CUTOFF stands for low flow cutoff.

3.13 L.FL.CUTOFF3.13 L.FL.CUTOFF

on page 43.

To ensure a stable zero point of the current output, the current output can be set to a stable value of "4.00mA" 3 in a selectable range.

multi-drop mode.

Overview of the units ESK4-T

on page 43.

Overview of the

3.13.1

CONTROL OFF LFC function is not active.

CONTROL ON L.FL.CUTOFF function is active.

3.13.2 ON VALUE Switch-on value 1:

3.13.3 OFF VALUE Switch-off value 2:

3.14 DESCRIPTOR

3.14 DESCRIPTOR 12 digits

3.14 DESCRIPTOR3.14 DESCRIPTOR

3.15 ENTRY CODE

3.15 ENTRY CODE Entry code for the local operating menu.

3.15 ENTRY CODE3.15 ENTRY CODE

3.15.1 OFF The use of an entry code is not activated.

3.15.2 ON If "YES" is selected, the last code that was entered has to be typed in.

3.16 DEFAULT VAL.

3.16 DEFAULT VAL. Resetting parameters to factory default.

3.16 DEFAULT VAL.3.16 DEFAULT VAL.

Value range 1…19% (of full scale range) The flow is greater than the switch-on value. The current output corresponds to this. If the flow rate falls, the current output follows until the switch-on value 1. If the flow value continues to fall, the current output is switched to "4.00mA" 3.

Note:

Note:Note: The switch-on value to be set must be smaller than the previously selected switch-off value.

Value range 2…20% (of full scale range) The flow rate is 0. The current output is "4.00mA" 3. If the flow rate increases, the current output remains at "4.00mA" until it has reached the switch-off value 2.

Note:

Note:Note: The switch-off value to be set must be greater than the previously selected switch-on value.

Free text input for header in LCD

The entry code is not active by default.

Factory code: → → → ^ ^ ^ ↑ ↑ ↑ If, after confirmation with "YES", the → key is pressed additionally, then a new, individual, nine digits code can be typed in. The display shows the required key combination.

There is always a safety prompt ("YES / NO"), to avoid accidental resetting.

Table 6-11: Menu description - 3 INSTALLATION

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SERVICE

7.1 Maintenance

Within the scope of routine maintenance of the system and pipelines, the flowmeter should also be inspected for signs of fouling, corrosion, mechanical wear and leaks, as well as damage to the measuring tube and the indicator. We advise that inspections are carried out at least once per year. The device must be removed from the pipeline before cleaning.

CAUTION!

Pressurised pipes have to be depressurised before removing the device. Empty the pipelines as completely as possible. In the case of devices used for measuring aggressive or hazardous media, appropriate safety precautions must be taken with regard to residual liquids in the measuring unit. New gaskets have to be used when re-installing the device in the pipeline. Avoid electrostatic charges when cleaning the surfaces (e.g. sight window)!

7.2 Replacement and retrofitting

Some components of the variable area flowmeter can be retrofitted:

H250 M40

• Float damping

Indicator M40:

Indicator M40:Indicator M40:

• Limit switch module K1 / K2

• Current output 4..20 mA ESK4 / ESK4A

• Counter module with LCD and I/O ESK4-T

• Fieldbus interface ESK4-PA / FF

7.2.1 Replacing floats

• Remove the device from the pipeline.

• Take the upper span ring out of the measuring unit.

• Take the upper float stop and float out of the measuring unit.

• Insert the new float into the centre hole of the lower float stop and push into the measuring

unit along with the upper float stop. While doing this, the float's upper guide rod must be guided through the middle hole of the float stop.

• Insert the span ring into the measuring unit.

• Fit the device back into the pipeline.

CAUTION!

Without a recalibration an additional measuring error is to be expected.

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H250 M40

7.2.2 Retrofitting of the float damping

• Take the upper span ring 1 out of the measuring unit.

• Take the upper float stop 2 and float 5 out of the measuring unit.

• Fasten the retaining ring 3 into the lower slot of the float's guide rod.

• Slide ceramic sleeve 4 on to the float's guide rod and attach it to the top slot using the

retaining ring 3.

• Insert float into the lower float guide in the measuring unit.

• Retrofit the supplied damping cylinder with the integrated float stop 2 into the measuring

unit.

• Insert upper span ring 1.

SERVICE

Figure 7-1: Design of the float damping

1 Span ring 2 Float stop 3 Retaining ring 4 Ceramic sleeve 5 Float

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SERVICE

7.2.3 Retrofitting of the limit switch

• Remove ESK4 / ESK4A add-on module (if available).

• Merge contact pointer 2 in the middle.

• Loosen the locking screw 1 on the contact pointer.

• Insert the contact module into slot 3 of the bracket until the semi-circle 1 on the contact

board surrounds the pointer cylinder.

H250 M40

For the setting of the limits refer to

Figure 7-2: Retrofitting of the limit switch

The contact module connecting terminals feature a pluggable design and can be removed in order to connect the cables.

Connection of the limit switches K1/K2

on page 25.

WARNING!

Do not damage the indicating element!

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H250 M40

7.2.4 Replacement - Retrofitting ESK4 / ESK4A

CAUTION!

When replacing or retrofitting an ESK4 / ESK4A, it is mandatory to indicate the serial number (SN) or sales order (SO) when ordering. This information can be found on the indicator nameplate.

The ESK4 / ESK4A is factory calibrated, making it possible to replace it or retrofit it without recalibrating.

• De-energise the ESK4 / ESK4A.

• Lift and remove the ESK4 / ESK4A with a screwdriver.

WARNING!

Do not damage the indicating element!

SERVICE

Figure 7-3: Replacement - Retrofitting ESK4 / ESK4A

• The ESK4 / ESK4A plug-in tongues 1 are plugged in under the two bolts 2 on the base plate.

• Slight pressure is used to press the ESK4 / ESK4A onto the spring pins 3 until it stops, firmly

attaching the ESK4 / ESK4A.

If a change in measuring range, product temperature, product, density, viscosity or pressure is desired, this can be done with the help of a variable area calculation program and with a HART

modem. However, each measuring unit is subject to its own physical limits, which the variable area calculation program correctly calculates, and may thus reject the desired change. If a change is performed using the program, the new data is also transmitted to the ESK4 / ESK4A:

• Device identification

• Device address

• Serial number

• Measuring point identifier

• Digital measured value query in flow units, % and mA

• Test / setting functions

• Calibration 4.00 and 20.00 mA

• Set current output to any desired value

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7.2.5 Replacement - Retrofitting add-on module ESK4-T / PA / FF

The add-on module for the ESK4 / ESK4A can be replaced or retrofitted on-site without removing the device from the process control.

• ESK4-T (Display module with LCD and I/O)

• ESK4-PA (Profibus PA interface)

• ESK4-FF (Foundation Fieldbus interface)

More detailed information can be found in the service manual included with each retrofit or replacement set.

7.3 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.

H250 M40

7.3.1 List of spare parts

Spare part Order number

DN15

DN15DN15

Float CIV 15, 1.4404 X251041000

Float DIV 15, 1.4404 X251042000

Float TIV 15, 1.4404 X251043000

Float DIVT 15, 1.4404 X251044000

Float TIV 15, Aluminium X251043100

Float TIV 15, Titanium X251043200

Set float stop; standard (1 float stop, 1 span ring) X251050100

Set float stop; gas damping (ZrO2) X251050200

Set float stop; gas damping (PEEK) X251050300

Damping bush (7x8) ZrO2 incl. 2 retaining rings X251053100

Damping bush (7x8) PEEK incl. 2 retaining rings X251053200

DN25

DN25DN25

Float CIV 25, 1.4404 X252041000

Float DIV 25, 1.4404 X252042000

Float TIV 25, 1.4404 X252043000

Float DIVT 25, 1.4404 X252044000

Set float stop; standard (1 float stop, 1 span ring) X252050100

Set float stop; gas damping (ZrO2) X252050200

Set float stop; gas damping (PEEK) X252050300

Damping bush (12x8) ZrO2 incl. 2 retaining rings X252053100

Damping bush (12x8) PEEK incl. 2 retaining rings X252053200

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Spare part Order number

DN50

DN50DN50

Float CIV 55, 1.4404 X253041000

Float DIV 55, 1.4404 X253042000

Float TIV55, 1.4404 X253043000

Float DIVT 55, 1.4404 X253044000

Set float stop; standard (1 float stop, 1 span ring) X253050100

Set float stop; gas damping (ZrO2) X253050200

Set float stop; gas damping (PEEK) X253050300

Damping bush (14x10) ZrO2 incl. 2 retaining rings X253053100

Damping bush (14x10) PEEK incl. 2 retaining rings X253053200

DN80

DN80DN80

Float CIV 85, 1.4404 X254041000

Float DIV 85, 1.4404 X254042000

Float TIV 85, 1.4404 X254043000

Float DIVT 85, 1.4404 X254044000

Set float stop; standard (1 float stop, 1 span ring) X254050100

Set float stop; gas damping (ZrO2) X254050200

Set float stop; gas damping (PEEK) X254050300

Damping bush (18x14) ZrO2 incl. 2 retaining rings X254053100

Damping bush (18x14) PEEK incl. 2 retaining rings X254053200

DN100

DN100DN100

Float CIV 105, 1.4404 X255041000

Float DIV 105, 1.4404 X255042000

Float DIVT 105, 1.4404 X255044000

Set float stop; standard (1 float stop, 1 span ring) only for bottom! X255050100

Set float stop; gas damping (ZrO2) X255050200

Set float stop; gas damping (PEEK) X255050300

Damping bush (18x14) ZrO2 incl. 2 retaining rings X254053100

Damping bush (18x14) PEEK incl. 2 retaining rings X254053200

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H250 M40

Indicator M40

Indicator M40Indicator M40

Housing components

Housing componentsHousing components

Standard indicator housing M40 complete, no scale * X251110000

Standard indicator housing M40R complete, no scale* (stainless steel, non-coated) X251111000

Standard cover M40 X251110100

Standard cover M40R (stainless steel, non-coated) X251110400

Cover seal X251112100

M40R standard base plate (stainless steel, non-coated) * X251120300

Standard = not pressure-tight

Standard = not pressure-tightStandard = not pressure-tight

Housing components indicator M40

Housing components indicator M40Housing components indicator M40

Retrofit kit HT extension X251021000

Module carrier (profile rail) X251121100

Set housing attachment parts X251121300

Pointer system, complete * X251122100

Magnetic brake for indicating element X251122200

* Accuracy loss without recalibration

NAMUR 2-wire limit module

NAMUR 2-wire limit moduleNAMUR 2-wire limit module

Contact module K1 min I7S23,5-N X251135100

Contact module K1 max I7S23,5-N X251135200

Contact module K2 min / max I7S23,5-N X251135300

Contact module K1 min SC3,5 N0 X251133100

Contact module K1 max SC3,5 N0 X251133200

Contact module K2 min / max SC3,5 N0 X251133300

Contact module K2 min / min min - SJ3,5 S1N / SJ 3,5 SN X251133400

Contact module K2 max / max max - SJ3,5 S1N / SJ 3,5 SN X251133500

Contact module K1 min SJ3,5 SN X251133600

Contact module K1 max SJ3,5 SN X251133700

Contact module K1 min / max SJ3,5 SN X251133800

3-wire limit module, normally closed

3-wire limit module, normally closed3-wire limit module, normally closed

Contact module K1 min SB3,5 E2 - act.Low X251133900

Contact module K1 max SB3,5 E2 - act.Low X251134000

Contact module K1 min / max SB3,5 E2 - act.Low X251134100

3-wire limit module, normally open

3-wire limit module, normally open3-wire limit module, normally open

Contact module K1 min SB3,5 E2 - act.High X251134200

Contact module K1 max SB3,5 E2 - act.High X251134300

Contact module K1 min / max SB3,5 E2 - act.High X251134400

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Electronic modules

Electronic modulesElectronic modules

ESK4, ESK4-FF, ESK4-PA, ESK4-FF (serial number required)

Cover for add-on modules X251121500

Connection cable ESK4 to add-on modules X251121600

Plugs (10 pcs) for ESK4 connection for bus modules X251132500

Replacement connector

Replacement connectorReplacement connector

Replacement connector 11/12 for ESK4 X251121700

Replacement connector D/D+ for ESK4-FF or ESK4-PA X251121800

Replacement connectors 1/2/3, 4/5/6, 7/8 for ESK4-T X251121900

Replacement cable gland

Replacement cable glandReplacement cable gland

Single cable gland M20x1.5 black, plastic - for non-Ex / Ex-i X251150300

Single cable gland M20x1.5 blue, plastic - for non-Ex / Ex-i X251150100

Single cable gland M20x1.5 brass - for non-Ex / Ex-i / Ex-nA X251151000

Single cable gland M20x1.5 brass Ex-d/t - for Ex-d / Ex-t X251152000

Single plug M20x1.5 brass Ex-d/t - for Ex-d / Ex-t X251153000

Single cable gland M20x1.5 stainless steel Ex-d/t - for Ex-d / Ex-t X251154000

Single plug M20x1.5 stainless steel Ex-d/t - for Ex-d / Ex-t X251155000

INFORMATION!

Other spare parts on request.

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7.4 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.

7.5 Returning the device to the manufacturer

7.5.1 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.

WARNING!

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.

H250 M40

WARNING!

If the device has been operated with toxic, caustic, radioactive, 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 it is safe to handle and stating the product used.

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H250 M40

7.5.2 Form (for copying) to accompany a returned device

CAUTION!

To avoid any risk for our service personnel, 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

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:

7.6 Disposal

LEGAL NOTICE!

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:

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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7.7 Disassembly and recycling

This section describes how to handle and disassemble the device in order to dispose of it following end of use. The information provided enables the end user to identify and separate the main components of the device for the purpose of recycling.

INFORMATION!

•

Wear personal protective equipment

•

Make sure to use a stable workstation / bench to disassemble

7.7.1 Description of the device components

H250 M40

Figure 7-4: Description of the device components

1 Measuring unit 2 Indicator housing

The variable area flowmeter consists of a mechanical, metallic measuring unit 1 and an indicator housing attached to it 2, which may contain electronic components. The metallic measuring unit can be sent to metal recycling after the indicator housing has been removed. Depending on the version, the measuring unit may weigh between 2...50 kg /

4.4...110.2 lb.

CAUTION!

Check and ensure that the measuring units, including all cavities, are free of hazardous substances by rinsing or neutralising if required. This should be done especially in the case of devices that have been operated with toxic, corrosive, radioactive, flammable or watercontaminating products to protect both the environment and the health and safety of staff.

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H250 M40

7.7.2 Indicator versions

The following discusses the indicator housing and optional electronics in more detail. The indicator housing can be fitted with various electronic modules. These can be easily removed from the housing in order to send them to electronics recycling/disposal.

SERVICE

Figure 7-5: Basic version

1 Pointer module 2 Bolts for ESK4 / ESK4A attachment 3 Base plate 4 Module profile 5 Pressure piece for ESK4 / ESK4A attachment 6 Housing cover locking device 7 Ground terminal external

The indicator housing consists of the following components:

Approx. information Weight Remarks

Glass panel 135 cm² / 20.9 in² -

Coated aluminium, cover + base plate

Stainless steel, cover + base plate

Other metal parts, pressure pin, bolts, grounding connection

PA module profile 75 g / 0.17 lb Can be removed by taking out the screw

Pointer system Can be removed after removing the module profile

Aluminium 30 g / 0.07 lb

Plastic 1 g / 0.002 lb

Magnetic material 10 g / 0.02 lb

Other metals 2 g / 0.004 lb

1.2...1.4 kg / 2.6...3.1 lb For M40 indicator type (see nameplate)

3.2...3.7 kg / 7.1...8.2 lb For M40R indicator type (see nameplate)

50 g / 0.1 lb -

The indicator housing may contain optional electronic components which can be seen when the cover is opened. They may be removed individually from the indicator housing.

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H250 M40

Figure 7-6: Versions K1 / K2 and ESK4 / ESK4A

1 Indicator with K2 contact module 2 Indicator with ESK4 / ESK4A current output 4...20 mA

Figure 7-7: Version ESK4-T

1 ESK4 / ESK4A connection 2 Module cover 3 Display 4 Display module ESK4-IO 5 Operating keys ^ ↑ 6 Connection binary outputs and reset input 7 Module connection cable

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H250 M40

Figure 7-8: Version Fieldbus ESK4-FF / ESK4-PA

1 Basic module with electronic magnet sensors ESK4 / ESK4A 2 Connection bus module 3 DIP switch for bus settings

The optional electronic modules consist of the following main components:

SERVICE

All information is approximate ESK4 ESK4-I/O ESK4-FF /

ESK4-PA

PCB 68 cm² / 10.5 in² 2x62cm² /

2x9.6in²

PA housing 63 g / 0.14 lb 42 g / 0.09 lb 42 g / 0.09 lb -

Potting (silicone) 135 g / 0.30 lb 100 g / 0.22 lb 100 g / 0.22 lb 5 g / 0.01 lb

Batteries - - - -

Electrolytic capacitors - - - LC display - 16 cm² / 2.5 in² - -

62 cm² / 9.6 in² 75 cm² / 11.6 in²

Contact module K1/K2

INFORMATION!

Silicone is used when potting the PCBs in the PA housings. It is thus not easy to separate the components by hand.

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TECHNICAL DATA

8.1 Functional principle

The H250 flowmeter operates in accordance with the float measuring principle. The measuring unit consists of a metal cone in which a float can move freely up and down. The medium flows through the flowmeter from bottom to top. The float adjusts itself so that the buoyancy force F1 acting on it, the form resistance F2 and its weight F3 are in equilibrium: F3 = F1 + F2

H250 M40

Figure 8-1: Measuring principle - general

1 Indication principle M40 magnetic coupling 2 Magnetic coupling sensors

1 For the indicator, the flow-dependent height of the float in the measuring unit is transmitted

by means of a magnetic coupling and displayed on a scale.

2 For a built-in signal converter (ESK4 / ESK4A), the flow-dependent height of the float in the measuring unit is detected by the S1 and S2 magnetic field sensors and electronically processed.

Figure 8-2: Measuring principle for H250H and H250U

1 H250H - horizontal flow direction 2 H250U - flow direction from top to bottom

The flowmeter operates in accordance with a modified float measuring principle. The guided float adjusts itself so that the flow force acting on it is in equilibrium with the opposing spring force. The flow-dependent position of the float in the measuring unit is displayed on a scale by means of a magnetic coupling.

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H250 M40

TECHNICAL DATA

8.2 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 Flow measurement of liquids, gases and vapours

Function / Measuring principle Float measuring principle

Measured value

Primary measured value Float position

Secondary measured value Operating volume flow, standard volume flow or mass flow

Measuring accuracy

Directive VDI/VDE 3513, sheet 2 (qG = 50%)

H250 /RR /HC /F 1.6%

H250/C (ceramic, PTFE), H250H, H250U, H250 (100 : 1) 2.5%

Precision (repeatability)

Precision (repeatability)Precision (repeatability)

H250 /RR /HC /F 0.25%

H250H, H250U, H250 (100 : 1) 0.5%

Operating conditions

Temperature

TemperatureTemperature Max. operating temperature TS -196...+300°C / -321...+572°F

Pressure

PressurePressure

Max. operating pressure PS, max. test pressure PT Depending on the version (refer to nameplate)

Min. required operating pressure 2 times greater than pressure loss (refer to measuring

Pressure/temperature heating for measuring cone

Pressure/temperature heating for measuring conePressure/temperature heating for measuring cone DN15...DN50 PS = 40 barg / 580 psig, TS = 300°C/ 572°F DN80...DN100 PS = 25 barg / 363 psig, TS = 300°C/ 572°F

Ingress protection

Ingress protectionIngress protection

M40, M40R IP66/68 according to EN 60529, NEMA 4/4X/6 according to

M40R IP69K according to DIN 40050-9

Float damping during gas measurement recommended

Float damping during gas measurement recommendedFloat damping during gas measurement recommended

DN15...25 / 1/2...1" Operating pressure <0.3 barg / 4.4 psig

DN50...100 / 2...4" Operating pressure <0.2 barg / 2.9 psig

Depending on the version (refer to nameplate)

ranges)

NEMA 250

Installation conditions according to VDI/VDE 3513, sheet 3

Inlet section ≥ 5 x DN Outlet section ≥ 3 x DN

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TECHNICAL DATA

H250 M40

Materials

Device Flange Measuring tube Float Float guide Ring orifice

H250/RR CrNi steel 1.4401 / 1.4404, 316 / 316L (dual

H250/HC

H250/F - Food CrNi steel 1.4435 CrNi-steel 1.4435 / 1.4404

H250/C Ceramic/PTFE

1 DN100/4" only PTFE 2 TFM/PTFE liner (electrically non-conductive), conductive PTFE on request

certification)

Hastelloy® C4 (2.4610) solid or plated

CrNi steel 1.4571 with TFM/PTFE

Hastelloy® C4

1.4404, 316L

PTFE or Al2O3 with FFKM gasket

Al2O3 and PTFE

Other options on request:

• Special materials: e.g. SMO 254/6Mo/1.4547, Titanium Grade 2, Hastelloy® C276/2.4819,

Monel

• Float damping: PEEK (only for gas) or ceramic

• Standard gasket for devices with female thread as insert: O-ring FPM / FKM, others optional

e.g. FFKM, EPDM

M40 Aluminium, two-layer powder coating (epoxy / polyester)

M40R Stainless steel without coating 1.4408 / CF8M

Offshore Wet coating on request

/2.4360, Inconel®/2.4856 a.o.

Al2O

Temperatures

TemperaturesTemperatures

For devices to be used in hazardous areas, special temperature ranges apply. These can be found in the Ex supplementary instructions.

Temperatures H250/M40 - mechanical indicator without auxiliary power

Material Product temperature Ambient temperature

Float Liner [°C] [°F] [°C] [°F]

H250/RR Stainless steel -196...+300 -321...+572 -40...+120 -40…+248 H250/RR screw fitting FPM/FKM -20...+200 -4...+392 -20…+120 -4…+248

H250/HC H250/C PTFE -196...+70 -321...+158 -40...+70 -40…+158

H250/C Ceramic PTFE -196...+150 -321...+302 -40...+70 -40…+158 H250/C Ceramic TFM / Ceramic -196...+250 -321...+482 -40...+120 -40…+248 H250 H/U Spring material stainless steel 1.4301 -40...+100 -40…+212 -40…+120 -40…+248

Hastelloy

Spring material Hastelloy® 2.4610

-196...+300 -321...+572 -40...+120 -40…+248

-40...+200 -40...+392 -40…+120 -40…+248

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H250 M40

TECHNICAL DATA

Ambient temperatures T

with electrical components

amb

Version [°C] [°F]

ESK4, ESK4A, ESK4-FF, ESK4-PA

Limit switches SJ3,5-SN / I7S23,5-N / Reed SPST -40...+70 -40...+158

Limit switches SC3,5-N0 / SJ3,5-S1N / SB3,5-E2 -25...+70 -13...+158

1 Display contrast out of the temperature range 0...+60°C / +32...+140°F decreasing.

-40...+70 -40...+158

INFORMATION!

The device must not be heated by radiated heat (e.g. exposure to the sun) to an electronics housing surface temperature above the maximum permissible ambient temperature. A sunshade is available as option.

Maximum product temperatures H250/M40 - with electrical components [°C]

< +40°C T

amb

EN ASME Version with Standard HT Standard HT

DN15, DN25

DN50 2" ESK4 / ESK4A, -FF, -PA +200 +300 +165 +300

DN80, DN100

1/2", 1" ESK4 / ESK4A, -FF, -PA +200 +300 +180 +300

ESK4-T +200 +300 +140 +290

Limit switch NAMUR +200 +300 +200 +300

Limit switch 3-wire +200 +300 +130 +295

ESK4-T +200 +300 +140 +290

Limit switch NAMUR +200 +300 +200 +300

Limit switch 3-wire +200 +300 +120 +195

3", 4" ESK4 / ESK4A, -FF, -PA +200 +300 +150 +250

ESK4-T +200 +300 +130 +270

Limit switch NAMUR +200 +300 +200 +300

Limit switch 3-wire +190 +300 +110 +160

< +60°C 1

amb

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TECHNICAL DATA

Maximum product temperatures H250/M40 - with electrical components [°F]

EN ASME Version with Standard HT Standard HT

< +104°F T

amb

< +140°F 1

amb

H250 M40

DN15, DN25

DN50 2" ESK4 / ESK4A, -FF, -PA 392 572 165 572

DN80, DN100

1/2", 1" ESK4 / ESK4A, -FF, -PA 392 572 356 572

ESK4-T 392 572 284 554

Limit switch NAMUR 392 572 392 572

Limit switch 3-wire 392 572 266 563

ESK4-T 392 572 284 554

Limit switch NAMUR 392 572 392 572

Limit switch 3-wire 392 572 248 383

3", 4" ESK4 / ESK4A, -FF, -PA 392 572 302 482

ESK4-T 392 572 266 518

Limit switch NAMUR 392 572 392 572

Limit switch 3-wire 374 572 230 320

1 if there are no heat insulation measures, a heat-resistant cable is necessary (continuous operating temperature of the cable to be used: +100°C / +212°F)

Abbreviation

HT High-temperature version

ESK4 / ESK4A

ESK4-T ESK4 with LCD, binary status outputs, digital counter and pulse output

ESK4-FF FOUNDATION FIELDBUS interface

ESK4-PA PROFIBUS PA interface

2-wire current output 4…20 mA with HART 5

/ HART 7

Cable glands

Material Cable diameter

[mm] [Inch]

M20x1.5 Standard PA 8...13 0.315...0.512

M20x1.5 Nickel-plated brass 10...14 0.394...0.552

M20x1.5 Stainless steel 10...14 0.394...0.552

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H250 M40

Limit switches K1/K2

TECHNICAL DATA

Terminal connection

2.5 mm

Limit switches I7S23,5-N

SJ3,5-SN 1SJ3,5-S1N

SB3,5-E2 Reed

SC3,5-N0

NAMUR (IEC 60947-5-6) Yes Yes Yes No No

Connection type 2-wire 2-wire 2-wire 3-wire 2-wire

Switching element function

Nominal voltage U

Pointer vane not detected ≥ 3mA ≥ 3mA ≤ 1mA ≤ 0.3 VDC U

Normally closed

Normally open PNP NO NC SPST

8.2 VDC 8.2 VDC 8.2 VDC 10...30 VDC max. 32 VDC

Pointer vane detected ≤ 1mA ≤ 1mA ≥ 3mA UB - 3 VDC 0VDC

Continuous current - - - Max. 100 mA Max. 100 mA

No load current I

- - - ≤ 15 mA -

Switching cycles - - - - 100000

1 safety oriented 2 no inductances

Current output ESK4 / ESK4A

Terminal connection

Power supply 14...32 VDC (12...32 VDC without ESK4-T), intrinsically safe

Min. power supply for HART

Measuring signal 4.00...20.00 mA = 0...100% flow value in 2-wire technology

Power supply influence <0.1%

External resistance dependency <0.1% Temperature influence <5 µA/K Max. external resistance / load 650 Ω at 30 VDC

Min. load for HART

NAMUR conformity NE43, NE107, NE21

2.5 mm

max. 30 VDC 20 VDC at 250 Ω load

250 Ω

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TECHNICAL DATA

ESK4 HART® configuration

Manufacturer name (code) KROHNE Messtechnik (0x45 = 69)

Model name / HART® revision

Physical Layer FSK

ESK4 / ESK4A process variable

Upper range limit +102.5 (±1%) 20.24...20.56

Device error identification > 106.25 >21.00

Multidrop operation 4.5

ESK4-FF

Physical Layer IEC 61158-2 and FISCO model

Communication standard H1 FOUNDATION Fieldbus protocol ITK version 6.3 (FW ≥ V 2.01)

Power supply Bus supply: 9...32 VDC, intrinsically safe max. 30 VDC

Nominal current 16 mA typical (17 mA rated)

Error current 23 mA

Boot-up current after 10 ms < Nominal current

ESK4 (214 = 0xD6) / HART 5.9

ESK4A (17854 = 0x45BE) / HART 7.4

Values [%] from full scale range

Signal output [mA]

(changeable to 3.6 mA)

H250 M40

For more details refer to the supplementary instructions "H250 M40 Foundation Fieldbus".

ESK4-PA

Physical Layer IEC 61158-2 and FISCO model

Communication standard Profibus PA profile 3.02

PNO ID 4531 HEX

Power supply Bus supply: 9...32 VDC, intrinsically safe max. 30 VDC

Nominal current 16 mA

Error current 23 mA

Boot-up current after 10 ms < Nominal current

For more details refer to the supplementary instructions "H250 M40 Profibus PA".

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H250 M40

TECHNICAL DATA

ESK4-T with LCD, binary inputs and outputs and digital counter

Binary output

Two binary outputs Galvanically isolated, passive

Mode Switching output NAMUR or transistor (OC)

Configurable as switch contact or pulse output NC / NO or max. 10 pulses/s

NAMUR switching output

Power supply 8.2 VDC

Signal current > 3 mA switching value not reached; < 1 mA switching value reached

Switching output transistor (Open Collector)

Power supply Nominal 24 VDC, maximum 30 VDC

max

Continuous current Max. 100 mA

No load current I

500 mW

≤ 2mA

Pulse output

off

Pulse weight

Configurable from 50...500 ms

Depending on flow rate

Configurable in flow units e.g. 5 pulses/m

Binary input

Input Galvanically isolated

Mode Reset counters or Start / Stop

Configurable as active HI / active LO

H signal 16...30 VDC

Internal resistance R

Ton (active) ≥ 500 ms

Typical 20 kΩ

LC display

Technology Passive graphic LCD

Display Measurement with units and/or counter reading with units.

Configuration Local plain text menu navigation via microswitch or bar magnet or using

Counter reading max. 11-digit with power failure proof storage. Binary flags for limit value status. 0...100% bargraph for measurement. NE 107 diagnostic status symbols. Plain text menu for configuration.

DD/DTM software

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TECHNICAL DATA

Approvals

Standard Indicator Marking

H250 M40

ATEX / IECEx M40 mechanical II2GD IIC

M40 electrical II2G Ex ia IIC T6 Gb

FM (USA) NEC500 FM (Canada) NEC505

NEPSI M40 electrical Ex ia, Ex d, Ex nA, Ex t

CCOE/PESO M40 electrical Ex ia, Ex d

EAC M40 mechanical Ex c

INMETRO M40 electrical Ex ia, Ex d, Ex nA, Ex t

KGS M40 electrical Ex ia, Ex d, Ex nA, Ex t

M40 electrical IS Class I Div 1, Class I Zone 1 AEx ia

M40 electrical Ex ia, Ex d, Ex nA, Ex t

II3GD IIC

II2G Ex d IIC T6 Gb II3G Ex nA IIC T6 Gc II2D Ex t IIIC T70°C Db II2D Ex ia IIIC T85°C Db

XP Class I Div 1, Class I Zone 1 AEx d NI Class I Div 2, Class I Zone 2 AEx nA DIP Class II / III Div 1, Class II/III Zone 21 AEx tb

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H250 M40

TECHNICAL DATA

8.3 Dimensions and weight

Dimensions H250/M40

Front view Side view with heating High-temperature

a b d h

[mm] ["] [mm] ["] [mm] ["] [mm] ["]

H250/RR flange, H250/F Clamp connection

H250/RR from 2" 600 lb, ISO 228, ASME B1.20.1, SMS

141 5.56 250 9.85 150 5.91 150 5.91

300 11.82

EN ASME c 1 e 2 Ø f g j

[mm] ["] [mm] ["] [mm] ["] [mm] ["] [mm] ["]

DN15 ½" 94 3.70 114 4.49 20 0.80 97 3.82 197 7.76

DN25 1" 94 3.70 127 5.00 32 1.28 109 4.27 209 8.23

DN50 2" 107 4.22 141 5.55 65 2.57 125 4.90 222 8.74

DN80 3" 107 4.22 157 6.18 89 3.51 143 5.61 238 9.37

DN100 4" 107 4.22 167 6.57 114 4.50 150 5.91 248 9.76

1 without cable gland; 2 Ex d, Ex t, Ex nA +10 mm / 0.39"

ISO 228 / ASME B1.20.1

Female thread screwed

ISO 228 / ASME B1.20.1

Female thread welded

H250/F 1 Clamp

connection

H250/F screw connection

DIN 11851

1 Stainless steel 1.4435 - wetted surfaces Ra ≤ 0.8 / 0.6 µm

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TECHNICAL DATA

Weight

WeightWeight

H250 M40

H250 Heating

Nominal size EN 1092-1 with flange connection with Ermeto connection

EN ASME [kg] [lb] [kg] [lb] [kg] [lb]

DN15 1/2" 3.5 7.7 5.6 12.6 3.9 8.6

DN25 1" 5 11 7.5 16.5 5.8 12.8

DN50 2" 8.2 18.1 11.2 24.7 9.5 21

DN80 3" 12.2 26.9 14.8 32.6 13.1 28.9

DN100 4" 14 30.9 17.4 38.4 15.7 34.6

H250/C [Ceramic / PTFE] Screw connection

Nominal size EN 1092-1 ASME 150 lb ASME 300 lb DIN 11864-1

EN ASME [kg] [lb] [kg] [lb] [kg] [lb] [kg] [lb]

DN15 1/2" 3.5 7.7 3.2 7.1 3.5 7.7 2 4.4

DN25 1" 5 11 5.2 11.5 6.8 15 3.5 7.7

DN50 2" 10 22.1 10 22.1 11 24.3 5 11

DN80 3" 13 28.7 13 28.7 15 33.1 7.6 16.8

DN100 4" 15 33.1 16 35.3 17 37.5 10.3 22.7

Process connections

Process connectionsProcess connections

Standard Conn. dim. Pressure rating

Flanges (H250/RR /HC /C) EN 1092-1 DN15...150 PN16...250

ASME B16.5 1/2...6" 150...2500 lb JIS B2220 15…100 10...20K

Clamp connections (H250/RR /F) DIN 32676 DN15...100 10...16 bar

ISO 2852 Size 25...139.7 10...16 bar

Screw connections (H250/RR /HC /F) DIN 11851 DN15...100 25...40 bar

SMS 1146 1...4" 6barg/ 88.2psig

Female thread welded (H250/RR /HC) ISO 228 G1/2...G2" ≥ 50 barg / 735 psig

ASME B1.20.1 1/2…2" NPT

Female thread (H250/RR /HC) with insert, FPM gasket and union nut

Thread connection aseptic (H250/F) DIN 11864-1 DN15…50 PN40

Flange aseptic (H250/F) DIN 11864-2 DN15…50 PN40

Measuring device (H250/RR /HC) with heating:

Measuring device (H250/RR /HC) with heating:Measuring device (H250/RR /HC) with heating:

Heating with flange connection EN 1092-1 DN15 PN40

Heating pipe connection for Ermeto - E12 PN40

ISO 228 G1/2…2 ≤ 50 barg / 735 psig ASME B1.20.1 1/2…2" NPT

DN80…100 PN16

DN80…DN100 PN16

ASME B16.5 1/2" 150 lb / RF

Higher pressure ratings and other connections on request.

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H250 M40

Bolts and tightening torques

For measuring devices with PTFE liner or ceramic liner and PTFE raised face, tighten the flange threads with the following torques:

Nominal sizes EN

TECHNICAL DATA

Stud bolts Tightening torques

Nominal size according to

Quantity x size [Nm] [lb-ft]

EN 1092-1

DN15 PN40

DN25 PN40

DN50 PN40

DN80 PN16

DN100 PN16

1 Standard connections; other connections on request

4x M12 9.8 7.1

4x M12 21 15

4x M16 57 41

8x M16 47 34

8x M16 67 48

Nominal size ASME

Stud bolts Tightening torques

Nominal size acc. to ASME B16.5 Quantity x size [Nm] [lb-ft]

150 lb 300 lb

1/2" 150 lb / 300 lb

1" 150 lb / 300 lb

2" 150 lb / 300 lb

3" 150 lb / 300 lb

4" 150 lb / 300 lb

1 Standard connections; other connections on request

4x 1/2" 4x 1/2" 5.2 3.8

4x 1/2" 4x 5/8" 10 7.2

4x 5/8" 8x 5/8" 41 30

4x 5/8" 8x 3/4" 70 51

8x 5/8" 8x 3/4" 50 36

Pressure tightness (vacuum) H250/C

Max. process temperature  +70°C / +158°F +150°C / +302°F +250°C / +482°F

Min. operating pressure

Nominal size Float Liner [mbara] [psia] [mbara] [psia] [mbara] [psia]

DN15...100 PTFE PTFE 100 1.45 - - - -

DN15...80 Ceramic PTFE 100 1.45 250 3.63 - -

DN15...80 Ceramic TFM / Ceramic 100 1.45 100 1.45 100 1.45

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TECHNICAL DATA

8.4 Measuring ranges

H250 M40

H250/RR - stainless steel, H250/HC - Hastelloy

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

Water Air Max. pressure loss

Float  TIV CIV DIV TIV

Nominal

Cone [l/h]

Alu.

TIV DIV TIV

[Nm3/h]

TIV CIV DIV

Alu.

[mbar]

size

DN15, 1/2" K 15.1 18 25 - 0.42 0.65 - 12 21 26 -

K 15.2 30 40 - 0.7 1 - 12 21 26 -

K 15.3 55 63 - 1 1.5 - 12 21 26 -

K 15.4 80 100 - 1.7 2.2 - 12 21 26 -

K 15.5 120 160 - 2.5 3.6 - 12 21 26 -

K 15.6 200 250 - 4.2 5.5 - 12 21 26 -

K 15.7 350 400 700 6.7 10 18

K 15.8 500 630 1000 10 14 28

K 15.8 - - 1600

DN25, 1" K 25.1 480 630 1000 9.5 14 - 11 24 32 72

K 25.2 820 1000 1600 15 23 - 11 24 33 74

K 25.3 1200 1600 2500 22 35 - 11 25 34 75

K 25.4 1700 2500 4000 37 50 110

K 25.5 3200 4000 6300 62 95 180

DN50, 2" K 55.1 2700 6300 8400 58 80 230

K 55.2 3600 10000 14000 77 110 350

K 55.3 5100 16000 25000 110 150 700

DN80, 3" K 85.1 12000 25000 37000 245 350 1000

K 85.2 16000 40000 64000 280 400 1800

DN100, 4" K105.1 19000 63000 100 000 - 550 2800

1 P >0.5 bar 2 with TR float 3 300 mbar with damping (gas measurement)

- - 50

12 21 28 38

13 22 32 50

- - - 85

12 26 38 78

13 30 45 103

8 13 74 60

8 13 77 69

9 13 84 104

8 16 68 95

9 16 89 125

- - 120 220

INFORMATION!

The operating pressure should be at least double the pressure loss for liquids and five times for gases. The indicated pressure losses are valid for water and air at maximum flow rate. Other flow ranges on request. Conversion of other media or operating data 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: Flow measurements for gases are attributed to:

Nl/h or Nm

/h: Volume flow at standard (norm.) conditions 0°C / +32°F, 1.013 bara / 14.7 psia

(DIN 1343)

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H250 M40

TECHNICAL DATA

H250/RR - stainless steel, H250/HC - Hastelloy

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

Water Air Max. pressure loss

Float  TIV CIV DIV TIV

Nominal

Cone [GPH] [SCFM] [psig]

Alu.

TIV DIV TIV

Alu.

TIV CIV DIV

size

DN15, 1/2" K 15.1 4.76 6.60 - 0.26 0.40 - 0.18 0.31 0.38 -

K 15.2 7.93 10.6 - 0.43 0.62 - 0.18 0.31 0.38 -

K 15.3 14.5 16.6 - 0.62 0.93 - 0.18 0.31 0.38 -

K 15.4 21.1 26.4 - 1.05 1.36 - 0.18 0.31 0.38 -

K 15.5 31.7 42.3 - 1.55 2.23 - 0.18 0.31 0.38 -

K 15.6 52.8 66.0 - 2.60 3.41 - 0.18 0.31 0.38 -

K 15.7 92.5 106 185 4.15 6.20 11.2

K 15.8 132 166 264 6.20 8.68 17.4

K 15.8 - - 423

DN25, 1" K 25.1 127 166 264 5.89 8.68 - 0.16 0.35 0.47 1.06

K 25.2 217 264 423 9.30 14.3 - 0.16 0.35 0.49 1.09

K 25.3 317 423 660 13.6 21.7 - 0.16 0.37 0.50 1.10

K 25.4 449 660 1057 22.9 31.0 68.2

K 25.5 845 1057 1664 38.4 58.9 111

DN50, 2" K 55.1 713 1664 2219 36.0 49.6 143

K 55.2 951 2642 3698 47.7 68.2 217

K 55.3 1347 4227 6604 68.2 93.0 434

DN80, 3" K 85.1 3170 6604 9774 152 217 620

K 85.2 4227 10567 16907 174 248 1116

DN100, 4" K105.1 5019 16643 26418 - 341 1736

1 P >7.4 psig 2 with TR float 3 4.4 psig with damping (gas measurement)

- - 31.0

0.18 0.31 0.41 0.56

0.19 0.32 0.47 0.74

- - - 1.25

0.18 0.38 0.56 1.15

0.19 0.44 0.66 1.51

0.12 0.19 1.09 0.88

0.12 0.19 1.13 1.01

0.13 0.19 1.23 1.53

0.12 0.24 1.00 1.40

0.13 0.24 1.31 1.84

- 1.76 3.23

INFORMATION!

Reference condition for gas measurements:

Reference condition for gas measurements:Reference condition for gas measurements: Flow measurements for gases are attributed to:

SCFM or SCFH: Volume flow at standard (std.) conditions +15°C / +59°F, 1.013 bara / 14.7 psia

(ISO 13443)

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TECHNICAL DATA

H250/C - Ceramic/PTFE

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

Flow rate Max. pressure loss

Water Air Water Air

Liner / Float  PTFE Ceram. PTFE Ceram. PTFE Ceram. PTFE Ceram.

H250 M40

Nominal

Cone [l/h]

[Nm3/h]

[mbar]

size

DN15, 1/2" E 17.2 25 30 0.7 - 65 62 65 62

E 17.3 40 50 1.1 1.8 66 64 66 64

E 17.4 63 70 1.8 2.4 66 66 66 66

E 17.5 100 130 2.8 4 68 68 68 68

E 17.6 160 200 4.8 6.5 72 70 72 70

E 17.7 250 250 7 9 86 72 86 72

E 17.8 400 - 10 - 111 - 111 -

DN25, 1" E 27.1 630 500 16 18 70 55 70 55

E 27.2 1000 700 30 22 80 60 80 60

E 27.3 1600 1100 45 30 108 70 108 70

E 27.4 2500 1600 70 50 158 82 158 82

E 27.5 4000

DN50, 2" E 57.1 4000 4500 110 140 81 70 81 70

E 57.2 6300 6300 180 200 110 80 110 80

E 57.3 10000 11000 250 350 170 110 170 110

E 57.4 16000

DN80, 3" E 87.1 16000 16000 - - 81 70 - -

E 87.2 25000 25000 - - 95 85 - -

E 87.3 40000

DN100, 4" E 107.1 40000 - - - 100 - - -

E 107.2 60000

1 Special float

2500 120 75 290 100 194 100

- - - 284 - - -

- - - 243 - - -

- - - 225 - - -

INFORMATION!

Reference condition for gas measurements:

Reference condition for gas measurements:Reference condition for gas measurements: Flow measurements for gases are attributed to

Nl/h or Nm

/h: Volume flow at standard (norm.) conditions 0°C / +32°F, 1.013 bara / 14.7 psia

(DIN 1343)

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H250 M40

TECHNICAL DATA

H250/C - Ceramic/PTFE

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

Flow rate Max. pressure loss

Water Air Water Air

Liner / Float  PTFE Ceram. PTFE Ceram. PTFE Ceram. PTFE Ceram.

Nominal

Cone [GPH] [SCFM] [psig]

size

DN15, 1/2" E 17.2 6.60 7.93 0.43 - 0.94 0.90 0.94 0.90

E 17.3 10.6 13.2 0.68 1.12 0.96 0.93 0.96 0.93

E 17.4 16.6 18.5 1.12 1.49 0.96 0.96 0.96 0.96

E 17.5 26.4 34.3 1.74 2.48 0.99 0.99 0.99 0.99

E 17.6 42.3 52.8 2.98 4.03 1.04 1.02 1.02 1.02

E 17.7 66.0 66.0 4.34 5.58 1.25 1.04 1.25 1.04

E 17.8 106 - 6.2 - 1.61 - 1.61 -

DN25, 1" E 27.1 166 132 9.92 11.2 1.02 0.80 1.02 0.80

E 27.2 264 185 18.6 13.6 1.16 0.87 1.16 0.87

E 27.3 423 291 27.9 18.6 1.57 1.02 1.57 1.02

E 27.4 660 423 43.4 31.0 2.29 1.19 2.29 1.19

E 27.5 1056

DN50, 2" E 57.1 1057 1189 68.2 86.8 1.18 1.02 1.18 1.02

E 57.2 1664 1664 111.6 124 1.60 1.16 1.60 1.16

E 57.3 2642 2906 155 217 2.47 1.60 2.47 1.60

E 57.4 4226

DN80, 3" E 87.1 4227 4227 - - 1.18 1.02 - -

E 87.2 6604 6604 - - 1.38 1.23 -

E 87.3 10567

DN100, 4" E 107.1 10567 - - - 1.45 - -

E 107.2 15850

1 Special float

660 74.4 46.5 4.21 1.45 2.81 1.45

- - - 4.12 - - -

- - - 3.55 - -

- - - 3.29 - -

INFORMATION!

Reference condition for gas measurements:

Reference condition for gas measurements:Reference condition for gas measurements: Flow measurements for gases are attributed to:

SCFM or SCFH: Volume flow at standard (std.) conditions +15°C / +59°F, 1.013 bara / 14.7 psia

(ISO 13443)

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TECHNICAL DATA

H250H - Horizontal installation position

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

H250 M40

EN ASME Cone Water [l/h]

Air [Nm3/h]

Pressure loss

[mbar]

DN15 1/2" K 15.1 70 1.8 195

K 15.2 120 3 204

K 15.3 180 4.5 195

K 15.4 280 7.5 225

K 15.5 450 12 250

K 15.6 700 18 325

K 15.7 1200 30 590

K 15.8 1600 40 950

K 15.8 2400 60 1600

DN25 1" K 25.1 1300 35 122

K 25.2 2000 50 105

K 25.3 3000 80 116

K 25.4 5000 130 145

K 25.5 8500 220 217

K 25.5 10000 260 336

DN50 2" K 55.1 10000 260 240

K 55.2 16000 420 230

K 55.3 22000 580 220

K 55.3 34000 900 420

DN80 3" K 85.1 25000 650 130

K 85.2 35000 950 130

K 85.2 60000 1600 290

DN100 4" K 105.1 80000 2200 250

K 105.1 120000 3200 340

INFORMATION!

Reference condition for gas measurements:

Reference condition for gas measurements:Reference condition for gas measurements: Flow measurements for gases are attributed to:

Nl/h or Nm

/h: Volume flow at standard (norm.) conditions 0°C / +32°F, 1.013 bara / 14.7 psia

(DIN 1343)

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H250 M40

TECHNICAL DATA

H250H - Horizontal installation position

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

EN ASME Cone Water [GPH] Air [SCFM] Pressure loss

DN15 1/2" K 15.1 18.5 1.12 2.87

K 15.2 31.7 1.86 3.00

K 15.3 47.6 2.79 2.87

K 15.4 74.0 4.65 3.31

K 15.5 119 7.44 3.68

K 15.6 185 11.2 4.78

K 15.7 317 18.6 8.68

K 15.8 423 24.8 14.0

K 15.8 634 37.2 23.5

DN25 1" K 25.1 343 21.7 1.79

K 25.2 528 31.0 1.54

K 25.3 793 49.6 1.71

K 25.4 1321 80.6 2.13

K 25.5 2245 136 3.19

K 25.5 2642 161 4.94

DN50 2" K 55.1 2642 161 3.53

K 55.2 4227 260 3.38

K 55.3 5812 360 3.23

K 55.3 8982 558 6.17

DN80 3" K 85.1 6604 403 1.91

K 85.2 9246 589 1.91

K 85.2 15851 992 4.26

DN100 4" K 105.1 21134 1364 3.68

K 105.1 31701 1984 5.00

[psig]

INFORMATION!

Reference condition for gas measurements:

Reference condition for gas measurements:Reference condition for gas measurements: Flow measurements for gases are attributed to

SCFM or SCFH: Volume flow at standard (std.) conditions +15°C / +59°F, 1.013 bara / 14.7 psia

(ISO 13443)

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TECHNICAL DATA

H250U - Vertical installation position

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

Flow direction: Vertical downwards

H250 M40

EN ASME Cone Water [l/h]

Air [Nm3/h]

Pressure loss

[mbar]

DN15 1/2" K 15.1 65 1.6 175

K 15.2 110 2.5 178

K 15.3 170 4 180

K 15.4 260 6 200

K 15.5 420 10 220

K 15.6 650 16 290

K 15.7 1100 28 520

K 15.8 1500 40 840

DN25 1" K 25.1 1150 30 97

K 25.2 1800 45 85

K 25.3 2700 70 92

K 25.4 4500 120 115

K 25.5 7600 200 172

DN50 2" K 55.1 9000 240 220

K 55.2 15000 400 230

K 55.3 21000 550 240

INFORMATION!

Reference condition for gas measurements:

Reference condition for gas measurements:Reference condition for gas measurements: Flow measurements for gases are attributed to:

Nl/h or Nm

/h: Volume flow at standard (norm.) conditions 0°C / +32°F, 1.013 bara / 14.7 psia

(DIN 1343)

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H250 M40

TECHNICAL DATA

H250U - Vertical installation position

Measuring span: 10 : 1 Flow values: Values = 100% Water: +20°C/ +68°F Air: +20°C/ +68°F, 1.013 bara / 14.7 psia

Flow direction: Vertical downwards

EN ASME Cone Water [GPH] Air [SCFM] Pressure loss

DN15 1/2" K 15.1 17.2 0.99 2.57

K 15.2 29.1 1.55 2.62

K 15.3 44.9 2.48 2.65

K 15.4 68.7 3.72 2.94

K 15.5 111 6.20 3.23

K 15.6 172 9.92 4.26

K 15.7 291 17.4 7.64

K 15.8 396 24.8 12.3

DN25 1" K 25.1 304 18.6 1.42

K 25.2 476 27.9 1.25

K 25.3 713 43.4 1.35

K 25.4 1189 74.4 1.69

K 25.5 2008 124 2.53

DN50 2" K 55.1 2378 149 3.23

K 55.2 3963 248 3.38

K 55.3 5548 341 3.53

[psig]

INFORMATION!

Reference condition for gas measurements:

Reference condition for gas measurements:Reference condition for gas measurements: Flow measurements for gases are attributed to:

SCFM or SCFH: Volume flow at standard (std.) conditions +15°C / +59°F, 1.013 bara / 14.7 psia

(ISO 13443)

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NOTES

H250 M40

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H250 M40

NOTES

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KROHNE – Process instrumentation and measurement solutions

•

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•

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•

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•

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•

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Services

Head Office KROHNE Messtechnik GmbH Ludwig-Krohne-Str. 5 47058 Duisburg (Germany) Tel.: +49 203 301 0 Fax: +49 203 301 10389 info@krohne.com

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