All rights reserved. It is prohibited to reproduce this documentation, or any part thereof, without
the prior written authorisation of KROHNE Messtechnik GmbH.
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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
1
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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1
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
GGases and vapours
1Fluid group 1
IIICategory III
HConformity 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).
6
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H250 M40
SAFETY INSTRUCTIONS
1
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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1
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.
8
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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
1
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1
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.
iRESULT
RESULT
RESULTRESULT
This symbol refers to all important consequences of the previous actions.
1.5 Safety instructions for the operator
10
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
2
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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2
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 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:
Nominal size according toOperating primary pressure
2
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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2
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
16
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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
2
* positions which are not needed are omitted (no blank positions)
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2
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 revisionExplanations
H250 M40
ER 1.1.xBasic 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.xFunctional add-on to ER 1.1.x:
ER 2.1.xFunctional add-on to ER 2.0.x:
ER 2.2.xFunctional add-on to ER 2.1.x:
ER 3.0.xFunctional 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
3
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3
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
20
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H250 M40
INSTALLATION
3
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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3
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 toStud boltsMax. torque
EN 1092-1ASME B16.5ENASMEEN 1092-1ASME 150 lb
DNPNInchlb150 lb300 lbNmft*lbfNmft*lbf
15401/2"150/3004x M124x 1/2"4x 1/2"9.87.15.23.8
25401"150/3004x M124x 1/2"4x 5/8"2115107.2
50402"150/3004x M164x 5/8"8x 5/8"57414130
80163"150/3008x M164x 5/8"8x 3/4"47347051
100164"150/3008x M168x 5/8"8x 3/4"67485036
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"
22
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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
3
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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4
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.
24
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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.
4
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.
ContactMINMAX
Terminal number123456
Connection 2-wire NAMUR-+-+
Connection 3-wire+-+-
Connection Reed SPST+-+-
Table 4-1: Electrical connection of the limit switches
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4
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.
26
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H250 M40
ELECTRICAL CONNECTIONS
4
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
ContactTypeCurrent consumption
MIN 1NAMUR≤ 1mA
MIN 2NAMUR≤ 1mA
MAX 1NAMUR≥ 3mA
MAX 2NAMUR≥ 3mA
Table 4-2: Current consumption in the position shown:
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4
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
4
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
U
ext.
with
U
= minimum supply voltage
ext.
R
= total measuring loop resistance
L
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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4
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
TM
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
30
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
4
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
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 outputB1B2
Terminal no.123456
Connection NAMUR+-+-
Connection transistor output+B
Table 4-3: Terminal assignment of the binary output
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OC
+B
OC
31
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4
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
L
ext.
H250 M40
NC contactNO 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 voltagesUL [V]UH [V]
via load R
Table 4-5: Value range for transistor output
Signal currentsIL [mA]IH [mA]
Category 20220110
Table 4-6: Value range for transistor output
L
= 1 kΩ
i
lower limitupper limitlower limitupper limit
021630
lower limitupper limitlower limitupper limit
32
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
4
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
on
3 t
off
The pulse width t
can be configured from 50...500 ms in the indicator menu.
on
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4
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 inputB3
Terminal no.78
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 voltageUL [V]UH [V]
lower limitupper limitlower limitupper limit
Terminal (7) (8)021630
Table 4-8: Value range
The binary input has an internal resistance R
of 20 kΩ.
i
ESK4-T menu
on page 46.
34
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H250 M40
ELECTRICAL CONNECTIONS
4.2.6 ESK4-FF / ESK4-PA fieldbus communication
4
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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4
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/ESK4ATerminal number
NAMURReed
12 NAMUR MIN (-)2 Reed MIN-11
22 NAMUR MIN (+)2 Reed MIN-23
33 NAMUR MAX (-)3 Reed MAX-44
43 NAMUR MAX (+)3 Reed MAX-56
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
15 Binary output B1 open coll. (+)1
25 Binary output B1 open coll. (-)3
37 Binary output B2 open coll. (+)4
47 Binary output B2 open coll. (-)6
56 4...20mA (+)11
66 4...20mA (-)12
7-
8-
Table 4-10: Terminal assignment - Harting plug to terminal number for ESK4-T
ESK4-TTerminal number
36
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
4.4 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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5
START-UP
5.1 Standard device
CAUTION!
When starting up the device, the following points must be observed:
•
Compare the actual operating pressure and the product temperature of the system with the
specifications on the nameplate (PS and TS). These specifications may not be exceeded.
•
Make sure materials are compatible.
•
Slowly open the shut-off valve.
•
When measuring liquids 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:
MediumPressure loss : operating pressure
H250 M40
Liquids1 : 2
Gases without float damping1 : 5
Gases with float damping1 : 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.
38
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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
6
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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6
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:
KeySymbol
1Enter^^^^
2up↑
3right→
Table 6-1: ESK4-T operation keys
40
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H250 M40
6.3 Basic principles of operation ESK4-T
6.3.1 Description of the operating keys
OPERATION
6
→
↑
^^^^
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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6
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
DisplayDisplay
Example:7.2
m
1x →Fct. 1111
OPERATION
2x ↑Fct. 3333
INSTALLATION
1x →Fct 3.1111
LANGUAGE
10x ↑Fct 3.11
F.S.& UNIT
3
/h
11
1111
1x →Fct. 3.11.1111
1x →10.0000
4x ↑10000
3x ^^^^7200
MEAS’D VALUE
3
/h
m
l/h
Confirm with →
deny ^
l/h
42
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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.
PrefixVolume definition
None
N
S
Measured variablesUnits
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
3
/h
3
/h
6
Operating
volume flow
Standard (norm.)
volume flow
Standard (std.)
volume flow
Mass flowg/sg/ming/h-
Operating
volume totalizer
Standard (norm.)
volume totalizer
Standard (std.)
volume totalizer
Mass totalizerkggtlb
Temperature°C°FK
Table 6-4: Overview of the units ESK4-T
m3/sm3/minm3/hm3/d
L/sL/minL/h-
ft3/sft3/minft3/hft3/d
gal/sgal/mingal/hgal/d
bbl/sbbl/minbbl/hbbl/d
ImpGal/sImpGal/minImpGal/hImpGal/d
Nm3/sNm3/minNm3/hNm3/d
NL/sNL/minNL/h-
Sm3/sSm3/minSm3/hSm3/d
SL/sSL/minSL/h-
Sft3/sSft3/minSft3/hSft3/d
kg/skg/minkg/hkg/d
-t/mint/ht/d
lb/slb/minlb/hlb/d
-STon/minSTon/hSTon/d
--LTon/hLTon/d
3
m
ImpGalgallonbblbbl (liq)
3
Nm
3
Sft
STonLTon
lhl
NL
SL
Sm
3
3
ft
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
SymbolNE107
DescriptionConsequence
Category
FFFFFailureNo measured value available
SOut of specificationMeasurement available but increasing measurement
MMaintenance requiredMeasurement still sufficiently accurate but
CCheck requestDevice is in test or linearization mode. The output
IInformationNo 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 messageDescriptionCategoryRemedy
NOT LINEARIZEDLinearization faulty or not
NEW LINEARI. TABLE
BAD
LINEARIZATIO UNDER
CONFIG
UNIT SYSTEM
CONFLICT
TOO FEW ENTRIESThe linearization table has
NOT MONOTONOUSThe 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
S 1
S
SCorrect error, carry out linearization again if
S
SCheck 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
44
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H250 M40
Error messageDescriptionCategoryRemedy
OPERATION
6
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 LOSTTotalizer value was reset
FRAM WRITE FAULTInternal communication
ROM/FLASH ERRORMemory error detected
RESTART OF DEVICEA device restart has taken
MULTIDROP MODE
CRYSTAL OSC FAULTInternal error in deviceFThe device must be sent back to the manufacturer
REF VOLTAGE FAULTInternal error in device
SENSOR A FAULTInternal error in deviceF 1
SENSOR B FAULTInternal error in device
MEMORY
CORRUPTION
AO FIXEDThe current output is set
AO SATURATEDCurrent output saturatedIThe 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.
SPerform 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.
SPerform 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.
SThe device, together with an indication of the
SCheck that the ribbon cable fits properly. Check
S
S 1Because the reset time is not known: Controlled
FCheck whether the display is plugged in correctly
FRestart device. If the error occurs again: send the
IThe device has been restarted using menu item
I
FRestart the device; if the error occurs again the
IThe 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
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.
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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6
OPERATION
Error messageDescriptionCategoryRemedy
H250 M40
ERROR TIMEOUTData not transferred, or
WARNING TIMEOUTI
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
FunctionSetting
1.1.1 OUTPUT B1INACTIVE
1.2.1 OUTPUT B2INACTIVE
1.3.1 PULSE WIDTH50ms
1.3.2 PULSE/UNIT1 Pulse/Unit
1.4 DISPLAYMEAS’D VALUE
1.4.2 ROTATION0°
1.5 TIME CONST1.0s
1.6.1 COUNTERNO
1.6.2 ERRORNO
1.6.3 RE-INIT IONO
3.1 LANGUAGEENGLISH
3.2 FUNCTION B1INACTIVE
3.3 CONTACT B1NORM.OPEN
3.4 FUNCTION B2INACTIVE
3.5 CONTACT B2NORM.OPEN
3.6 FUNCTION B3INACTIVE
3.7 MULTIDROPPOLLING ADD: 00
3.8 4mA CALIBR.4.000mA
3.9 20mA CALIBR.20.000mA
3.10 ALARM CURR.ALARM HIGH
3.11 F.S.& UNITApplication specific
3.11.2 COUNTERApplication specific
3.12 USER DEFINEDUser defined unit / factor
3.13 L.FL.CUTOFF4% ON; 6% OFF
3.14 DESCRIPTORFree text
3.15 ENTRY CODEOFF
3.16 DEFAULT VAL.NO
Table 6-7: Factory settings
FConfirm menu item "1.6.3 WRITE INFO I/O".
46
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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OPERATION
Main menuSubmenu 1Submenu 2
2 TEST & INFO2.7 SOFT.VERSION2.7.1 FW. ESK4
2.7.2 FW. ESK4 I/O
2.8 TAG NB.8 characters
2.9 LONG TAG32 characters
3 INSTALLATION3.1 LANGUAGE3.1.1 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 B1INACTIVE, SWITCH POINT, COUNT. LIMIT, PULSE OUTP.
3.3 CONTACT B1NORM.OPEN, NORM.CLOSED
3.4 FUNCTION B2INACTIVE, SWITCH POINT, COUNT. LIMIT, PULSE OUTP.
3.5 CONTACT B2NORM.OPEN, NORM.CLOSED
3.6 FUNCTION B3INACTIVE, ACTIVE HI, ACTIVE LO, STARTH STOPL, STARTL STOPH
3.7 MULTIDROPPOLLING 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.& UNIT3.11.1 MEAS'D VALUE
3.11.2 COUNTER
3.12 USER DEFINED3.12.1 MEAS'D VALUE
3.12.2 COUNTER
3.13 L.FL.CUTOFF3.13.1 CONTROL ON, CONTROL OFF
3.13.2 ON VALUE
3.13.3 OFF VALUE
3.14 DESCRIPTORFree text
3.15 ENTRY CODEOFF, ON
3.16 DEFAULT VAL.SET ALL
Table 6-8: Menu structure
H250 M40
48
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H250 M40
OPERATION
6.6.3 Menu description
1 OPERATION
Selection / InputExplanation
1.1 OUTPUT B1
1.1 OUTPUT B1Output 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. B1Switching 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.
6
In Fct. 1.1.2 a hysteresis can be specified additionally.
CNT. VAL. B1Switching point of totaliser value
PULSE WIDTHPulse weight (pulse/unit)
1.1.2 HYST. B1Hysteresis 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: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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6
OPERATION
H250 M40
Selection / InputExplanation
1.2 OUTPUT B2
1.2 OUTPUT B2Output 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. B2Refer to MEAS.VAL. B1
CNT. VAL. B2Refer to CNT. VAL. B1
PULSE WIDTH B2Refer to PULSE WIDTH B1
1.2.2 HYST. B2Refer to HYST. B1
1.3 PULSE OUTP.
1.3 PULSE OUTP.-
1.3 PULSE OUTP.1.3 PULSE OUTP.
1.3.1 PULSE WIDTH
50msTi = 50 ms; f
100msTi = 100 ms; f
200msTi = 200 ms; f
500msTi = 500 ms; f
1.3.2 PULSE/UNIT0.001...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
max
max
max
= 5 Hz
= 2.5 Hz
= 1 Hz
50
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: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 DISPLAYDifferent measured values can be selected for permanent or alternating display.
1.4 DISPLAY1.4 DISPLAY
1.4.1
MEAS’D VALUEPermanent display of flow in flow units
COUNTERPermanent display of totalizer
MV/COUNTERAlternating display of flow value in flow units and totalizer
MV&COUNTERSimultaneous display of flow value and totalizer
PERCENTPermanent 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 CONST0.0...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
6
Note:
Note:
Note:Note:
If the current flow is polled via HART
also played back with a delay.
1.6 RESET
1.6 RESETLocal resetting of totalizer and acknowledgement of warnings.
1.6 RESET1.6 RESET
1.6.1 COUNTERConfirming with "YES" resets the value of the totalizer to 0.0.
1.6.2 ERRORConfirming with "YES" acknowledges all existing warnings.
1.6.3 RE-INIT IOAs 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:Note:
External resetting of the totalizer can be installed with the binary input B3.
Note:
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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6
OPERATION
2 TEST & INFO
Selection / InputExplanation
2.1 4-20mA OUTP
2.1 4-20mA OUTPTesting the current loop by setting various current values.
2.1 4-20mA OUTP2.1 4-20mA OUTP
Note:
Note:
Note:Note:
The test is not available in HART
Attention:
Attention:
Attention:Attention:
During the test, the value of the current loop does not follow the current process.
2.1.1 NORMAL OPThe value of the current loop follows the current process.
2.1.2 4.0mAThe 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:Attention:
During the test, the binary status does not correspond to the current process.
2.3.1 NORMAL OPThe binary status of the switching output corresponds to the current process.
2.3.2 OPENThe binary status of the switching output no longer corresponds to the current process.
2.3.3 CLOSED
2.4 OUTPUT B2
2.4 OUTPUT B2Refer 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 B3The 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: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 / InputExplanation
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 ESK4Serial number ESK4
2.6.3 PROD. ORDERProduction order for the complete flowmeter
2.6.4 DEV. SN.Serial number for the complete flowmeter
2.7 SOFT.VERSION
2.7 SOFT.VERSIONInformation about software revision status
2.7 SOFT.VERSION2.7 SOFT.VERSION
2.7.1 FW. ESK4Software revision status for device insert ESK4-Basic
2.7.2 FW. ESK4 IOSoftware 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 TAG32 digits
Measuring point identifier
Alphanumerical characters. Up to 32 digits are possible.
Table 6-10: Menu description - 2 TEST & INFO
OPERATION
6
3 INSTALLATION
Selection / InputExplanation
3.1 LANGUAGE
3.1 LANGUAGELanguage selection for the displayed menu texts.
3.1 LANGUAGE3.1 LANGUAGE
3.1.1 ENGLISHThe 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
INACTIVEThe binary switching output B1 has no function.
SWITCH POINTThe 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. LIMITThe 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: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.OPENThe contact type of the binary switching output B1 is "normally open".
NORM.CLOSEDThe contact type of the binary switching output B1 is "normally closed".
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OPERATION
H250 M40
Selection / InputExplanation
3.4 FUNCTION B2
3.4 FUNCTION B2-
3.4 FUNCTION B23.4 FUNCTION B2
INACTIVERefer to FUNCTION B1
SWITCH POINTRefer to FUNCTION B1
COUNT. LIMITRefer 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.CLOSEDRefer to CONTACT B1
NORM.OPENRefer to CONTACT B1
3.6 FUNCTION B3
3.6 FUNCTION B3-
3.6 FUNCTION B33.6 FUNCTION B3
INACTIVEThe binary switching input B3 has no function.
ACTIVE HIThe internal flow counter is reset to 0.0 if there is an H level at input B3 for at least 100 ms.
ACTIVE LOThe internal flow counter is reset to 0.0 if there is an L level at input B3 for at least 100 ms.
STARTH STOPLThe counter is started by creating an H level at input B3 and stopped by creating an L level
STARTL STOPHThe counter is started by creating an L level at input B3 and stopped by creating an H level
3.7 MULTIDROP
3.7 MULTIDROP0…15
3.7 MULTIDROP3.7 MULTIDROP
Configuration of the switching point is in Fct. 1.2.1 MEAS.VAL. B2.
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.
at input B3.
Polling address for HART® multi-drop mode
When the address is 0, the HART
Attention:
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:Note:
This function is not available in HART
Attention:
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:Note:
This function is not available in HART
Attention:
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.
®
multi-drop mode.
54
Note:
Note:
Note:Note:
This function is not available in HART
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®
multi-drop mode.
Page 55
H250 M40
OPERATION
Selection / InputExplanation
ALARM HIGHError indication via the current loop is activated (failure signal "high" acc. to NE43).
Note:
Note:
Note:Note:
This function is not available in HART
ALARM LOWError indication via the current loop is activated (failure signal "low" acc. to NE43).
Note:
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&UNITBy 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 VALUEFor units for volume flow or mass flow, refer to
3.11.2 COUNTERFor units for volume counter or mass counter and pulse output, refer to
units ESK4-T
3.12 USER DEFINED
3.12 USER DEFINEDUser-defined unit with conversion to calibrated unit.
3.12 USER DEFINED3.12 USER DEFINED
3.13 L.FL.CUTOFF
3.13 L.FL.CUTOFFL.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.
®
multi-drop mode.
Overview of the units ESK4-T
on page 43.
Overview of the
6
3.13.1
CONTROL OFFLFC function is not active.
CONTROL ONL.FL.CUTOFF function is active.
3.13.2 ON VALUESwitch-on value 1:
3.13.3 OFF VALUESwitch-off value 2:
3.14 DESCRIPTOR
3.14 DESCRIPTOR12 digits
3.14 DESCRIPTOR3.14 DESCRIPTOR
3.15 ENTRY CODE
3.15 ENTRY CODEEntry code for the local operating menu.
3.15 ENTRY CODE3.15 ENTRY CODE
3.15.1 OFFThe use of an entry code is not activated.
3.15.2 ONIf "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: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: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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7
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: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
7
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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• 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.
• 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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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 partOrder number
DN15
DN15
DN15DN15
Float CIV 15, 1.4404X251041000
Float DIV 15, 1.4404X251042000
Float TIV 15, 1.4404X251043000
Float DIVT 15, 1.4404X251044000
Float TIV 15, AluminiumX251043100
Float TIV 15, TitaniumX251043200
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 ringsX251053100
Damping bush (7x8) PEEK incl. 2 retaining ringsX251053200
DN25
DN25
DN25DN25
Float CIV 25, 1.4404X252041000
Float DIV 25, 1.4404X252042000
Float TIV 25, 1.4404X252043000
Float DIVT 25, 1.4404X252044000
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 ringsX252053100
Damping bush (12x8) PEEK incl. 2 retaining ringsX252053200
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H250 M40
SERVICE
Spare partOrder number
DN50
DN50
DN50DN50
Float CIV 55, 1.4404X253041000
Float DIV 55, 1.4404X253042000
Float TIV55, 1.4404X253043000
Float DIVT 55, 1.4404X253044000
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 ringsX253053100
Damping bush (14x10) PEEK incl. 2 retaining ringsX253053200
DN80
DN80
DN80DN80
Float CIV 85, 1.4404X254041000
Float DIV 85, 1.4404X254042000
Float TIV 85, 1.4404X254043000
Float DIVT 85, 1.4404X254044000
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 ringsX254053100
Damping bush (18x14) PEEK incl. 2 retaining ringsX254053200
DN100
DN100
DN100DN100
Float CIV 105, 1.4404X255041000
Float DIV 105, 1.4404X255042000
Float DIVT 105, 1.4404X255044000
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 ringsX254053100
Damping bush (18x14) PEEK incl. 2 retaining ringsX254053200
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SERVICE
H250 M40
Indicator M40
Indicator M40
Indicator M40Indicator M40
Housing components
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 M40X251110100
Standard cover M40R (stainless steel, non-coated)X251110400
Cover sealX251112100
M40R standard base plate (stainless steel, non-coated) *X251120300
Standard = not pressure-tight
Standard = not pressure-tight
Standard = not pressure-tightStandard = not pressure-tight
Contact module K1 min SB3,5 E2 - act.LowX251133900
Contact module K1 max SB3,5 E2 - act.LowX251134000
Contact module K1 min / max SB3,5 E2 - act.LowX251134100
3-wire limit module, normally open
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.HighX251134200
Contact module K1 max SB3,5 E2 - act.HighX251134300
Contact module K1 min / max SB3,5 E2 - act.HighX251134400
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H250 M40
SERVICE
Electronic modules
Electronic modules
Electronic modulesElectronic modules
ESK4, ESK4-FF, ESK4-PA, ESK4-FF (serial number required)
Cover for add-on modulesX251121500
Connection cable ESK4 to add-on modulesX251121600
Plugs (10 pcs) for ESK4 connection for bus modulesX251132500
Replacement connector
Replacement connector
Replacement connectorReplacement connector
Replacement connector 11/12 for ESK4X251121700
Replacement connector D/D+ for ESK4-FF or ESK4-PAX251121800
Replacement connectors 1/2/3, 4/5/6, 7/8 for ESK4-TX251121900
Replacement cable gland
Replacement cable gland
Replacement cable glandReplacement cable gland
Single cable gland M20x1.5 black, plastic - for non-Ex / Ex-iX251150300
Single cable gland M20x1.5 blue, plastic - for non-Ex / Ex-iX251150100
Single cable gland M20x1.5 brass - for non-Ex / Ex-i / Ex-nAX251151000
Single cable gland M20x1.5 brass Ex-d/t - for Ex-d / Ex-tX251152000
Single plug M20x1.5 brass Ex-d/t - for Ex-d / Ex-tX251153000
Single cable gland M20x1.5 stainless steel Ex-d/t - for Ex-d / Ex-tX251154000
Single plug M20x1.5 stainless steel Ex-d/t - for Ex-d / Ex-tX251155000
7
INFORMATION!
Other spare parts on request.
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SERVICE
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
7
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: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
SERVICE
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.
The indicator housing consists of the following components:
Approx. informationWeightRemarks
Glass panel135 cm² / 20.9 in²-
Coated aluminium, cover + base
plate
Stainless steel, cover + base
plate
Other metal parts, pressure pin,
bolts, grounding connection
PA module profile75 g / 0.17 lbCan be removed by taking out the screw
Pointer systemCan be removed after removing the module profile
Aluminium30 g / 0.07 lb
Plastic1 g / 0.002 lb
Magnetic material10 g / 0.02 lb
Other metals2 g / 0.004 lb
1.2...1.4 kg / 2.6...3.1 lbFor M40 indicator type (see nameplate)
3.2...3.7 kg / 7.1...8.2 lbFor 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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SERVICE
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
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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8
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
70
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 rangeFlow measurement of liquids, gases and vapours
Function / Measuring principleFloat measuring principle
Measured value
Primary measured value Float position
Secondary measured valueOperating volume flow, standard volume flow or mass flow
1 Display contrast out of the temperature range 0...+60°C / +32...+140°F decreasing.
1
-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]
T
< +40°CT
amb
ENASMEVersion withStandard HTStandard HT
DN15,
DN25
DN502"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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8
TECHNICAL DATA
Maximum product temperatures H250/M40 - with electrical components [°F]
ENASMEVersion withStandard HTStandard HT
T
< +104°FT
amb
< +140°F 1
amb
H250 M40
DN15,
DN25
DN502"ESK4 / ESK4A, -FF, -PA392572165572
DN80,
DN100
1/2", 1"ESK4 / ESK4A, -FF, -PA392572356572
ESK4-T392572284554
Limit switch NAMUR392572392572
Limit switch 3-wire392572266563
ESK4-T392572284554
Limit switch NAMUR392572392572
Limit switch 3-wire392572248383
3", 4"ESK4 / ESK4A, -FF, -PA392572302482
ESK4-T392572266518
Limit switch NAMUR392572392572
Limit switch 3-wire374572230320
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
HTHigh-temperature version
ESK4 / ESK4A
ESK4-TESK4 with LCD, binary status outputs, digital counter and pulse output
ESK4-FFFOUNDATION FIELDBUS interface
ESK4-PAPROFIBUS PA interface
2-wire current output 4…20 mA with HART 5
®
/ HART 7
®
Cable glands
MaterialCable diameter
[mm][Inch]
M20x1.5 StandardPA8...130.315...0.512
M20x1.5Nickel-plated brass10...140.394...0.552
M20x1.5Stainless steel10...140.394...0.552
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H250 M40
Limit switches K1/K2
TECHNICAL DATA
8
Terminal connection
2.5 mm
Limit switchesI7S23,5-N
2
SJ3,5-SN 1SJ3,5-S1N
1
SB3,5-E2Reed
SC3,5-N0
NAMUR (IEC 60947-5-6)YesYesYesNoNo
Connection type2-wire2-wire2-wire3-wire2-wire
Switching element
function
Nominal voltage U
0
Pointer vane not detected≥ 3mA≥ 3mA≤ 1mA≤ 0.3 VDCU
Power supply14...32 VDC (12...32 VDC without ESK4-T), intrinsically safe
Min. power supply for HART
®
Measuring signal4.00...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 / load650 Ω at 30 VDC
Min. load for HART
®
NAMUR conformityNE43, NE107, NE21
2
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 LayerFSK
ESK4 / ESK4A process variable
Upper range limit+102.5 (±1%)20.24...20.56
Device error identification> 106.25>21.00
Multidrop operation4.5
ESK4-FF
Physical LayerIEC 61158-2 and FISCO model
Communication standardH1 FOUNDATION Fieldbus protocol
ITK version6.3 (FW ≥ V 2.01)
Power supplyBus supply: 9...32 VDC, intrinsically safe max. 30 VDC
Nominal current16 mA typical (17 mA rated)
Error current23 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 LayerIEC 61158-2 and FISCO model
Communication standardProfibus PA profile 3.02
PNO ID4531 HEX
Power supplyBus supply: 9...32 VDC, intrinsically safe max. 30 VDC
Nominal current16 mA
Error current23 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 outputsGalvanically isolated, passive
ModeSwitching outputNAMUR or transistor (OC)
Configurable asswitch contact or pulse outputNC / NO or max. 10 pulses/s
NAMUR switching output
Power supply8.2 VDC
Signal current> 3 mA switching value not reached;< 1 mA switching value reached
Switching output transistor (Open Collector)
Power supplyNominal 24 VDC, maximum 30 VDC
P
max
Continuous currentMax. 100 mA
No load current I
0
500 mW
≤ 2mA
Pulse output
T
on
T
off
Pulse weight
Configurable from 50...500 ms
Depending on flow rate
Configurable in flow units e.g. 5 pulses/m
3
8
Binary input
InputGalvanically isolated
ModeReset counters or Start / Stop
Configurable asactive HI / active LO
H signal16...30 VDC
Internal resistance R
Ton (active)≥ 500 ms
i
Typical 20 kΩ
LC display
TechnologyPassive graphic LCD
DisplayMeasurement with units and/or counter reading with units.
ConfigurationLocal 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
StandardIndicatorMarking
H250 M40
ATEX / IECExM40 mechanicalII2GD IIC
M40 electricalII2G Ex ia IIC T6 Gb
FM (USA) NEC500
FM (Canada)
NEC505
NEPSIM40 electricalEx ia, Ex d, Ex nA, Ex t
CCOE/PESOM40 electricalEx ia, Ex d
EACM40 mechanicalEx c
INMETROM40 electricalEx ia, Ex d, Ex nA, Ex t
KGSM40 electricalEx ia, Ex d, Ex nA, Ex t
M40 electricalIS Class I Div 1, Class I Zone 1 AEx ia
M40 electricalEx 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 viewSide viewwith heatingHigh-temperature
8
abdh
[mm]["][mm]["][mm]["][mm]["]
H250/RR flange,
H250/F Clamp connection
H250/RR from 2" 600 lb,
ISO 228, ASME B1.20.1, SMS
1415.562509.851505.911505.91
30011.82
ENASMEc 1e 2Ø fgj
[mm]["][mm]["][mm]["][mm]["][mm]["]
DN15½"943.701144.49200.80973.821977.76
DN251"943.701275.00321.281094.272098.23
DN502"1074.221415.55652.571254.902228.74
DN803"1074.221576.18893.511435.612389.37
DN1004"1074.221676.571144.501505.912489.76
1 without cable gland; 2 Ex d, Ex t, Ex nA +10 mm / 0.39"
1 P >0.5 bar
2 with TR float
3 300 mbar with damping (gas measurement)
2
--50
1
1
2
1
1
1
1
1
1
1
1
12212838
13223250
---85
12263878
133045103
8137460
8137769
91384104
8166895
91689125
--120220
3
82
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:Reference condition for gas measurements:
Flow measurements for gases are attributed to:
3
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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1 P >7.4 psig
2 with TR float
3 4.4 psig with damping (gas measurement)
2
--31.0
1
1
2
1
1
1
1
1
1
1
1
0.180.310.410.56
0.190.320.470.74
---1.25
0.180.380.561.15
0.190.440.661.51
0.120.191.090.88
0.120.191.131.01
0.130.191.231.53
0.120.241.001.40
0.130.241.311.84
-1.763.23
3
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: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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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:Reference condition for gas measurements:
Flow measurements for gases are attributed to
3
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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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: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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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:Reference condition for gas measurements:
Flow measurements for gases are attributed to:
3
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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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: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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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.
88
Reference condition for gas measurements:
Reference condition for gas measurements:
Reference condition for gas measurements:Reference condition for gas measurements:
Flow measurements for gases are attributed to:
3
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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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: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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