Spirax Sarco elm Installation, Operating And Maintenance Instructions

IM-P309-02
3090050/1
MI Issue 2
ELM
ElectroMagnetic Inductive Flowmeter
Installation, Operating and Maintenance Instructions
1.Introduction
2. Safety information
3. General product information
4. Steps prior to operation
5.Applications
6. Operational mode
and system design
7. Performance characteristics
and environmental conditions
8. Installation / conditions for use
9. Maintenance and repair
10.Dimensions and weight
11.Commissioning
12.System design
13.Configuration and operation
14. Operating modes
15.ELM functions
16. Standard operating mode
17.Standards & Directives
18.Maintenance
19. Decontamination certificate
for device cleaning
IM-P309-02 MI Issue 2
© Copyright 2014
1
Printed in GB
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IM-P309-02 MI Issue 2
1. Introduction
This installation and operating manual explains how to operate, install and perform
maintenance on the flowmeter. Please read the manual carefully before installing
the device and putting it into operation. The manual does not apply to non-standard
versions or applications.
All devices are thoroughly tested and checked for order compliance prior to shipping.
Upon receipt of the device, check it for shipping damage.
If any problem comes to light, contact your local Spirax Sarco representative. Please
describe the problem and indicate type and serial number of the device. We extend
no guarantee of any kind for repair work that is undertaken without notifying us in
advance of the intention to carry out such work. Unless otherwise agreed, any part or
component for which a claim is lodged is to be sent to us for examination.
2. Safety information
Safe operation of this unit can only be guaranteed if it is properly installed,
commissioned and maintained by a qualified person (see Section 1.11) in compliance
with the operating instructions. General installation and safety instructions for pipeline
and plant construction, as well as the proper use of tools and safety equipment must
also be complied with.
Supplier:
Spirax-Sarco Limited
Charlton House
Charlton Kings
Cheltenham
Glos
GL53 8ER
The product is designed and constructed to withstand the forces encountered during
normal use. Use of the product for any other purpose, or failure to install the product
in accordance with these Installation and Maintenance Instructions, could cause
damage to the product, will invalidate the marking, and may cause injury or fatality to
personnel.
The following conditions should be avoided as they may create interference above
the heavy industrial limits if:
- The product or its wiring is located near a radio transmitter.
- Cellular telephones and mobile radios may cause interference
if used within
approximately 1 metre (39") of the product or its wiring. The actual separation
distance necessary will vary according to the surroundings of the installation and
the power of the transmitter.
If this product is not used in the manner specified by this IMI, then the protection
provided may be impaired.
IM-P309-02 MI Issue 2
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Installation, commissioning, operating personnel
Mechanical and electrical installation, as well as commissioning,
maintenance and operation, are to be realized solely by qualified
personnel that are authorized by the installation operator to perform
such work. All such personnel must read and understand the content
of the applicable operating instructions before working with the device.
In general, follow the conditions and provisions applicable in your country.
The present document contains the information that you need in order to operate the
product described herein properly. The document is intended for use by qualified
personnel. This means personnel who are qualified to operate the device described
herein safely, including electronics engineers, electrical engineers, or service
technicians who are conversant with the safety regulations pertaining to the use
of electrical and automated technical devices and with the applicable laws and
regulations in their own country.
Such personnel must be authorized by the facility operator to install, commission and
service the product described herein, and are to read and understand the contents of
the present operating instructions before working with the device.
2.1 Hazard warnings
The purpose of the hazard warnings listed below is to ensure that device operators
and maintenance personnel are not injured and that the flowmeter and any devices
connected to it are not damaged.
The safety advisories and hazard warnings in the present document that aim to avoid
placing operators and maintenance personnel at risk and to avoid material damage
are prioritized using the terms listed below, which are defined as follows in regard to
these instructions herein and the advisories pertaining to the device itself.
2.2Danger
means that failure to take the prescribed precautions will result in death, severe bodily
injury, or substantial material damage.
2.3Warning
means that failure to take the prescribed precautions could result in death, severe
bodily injury, or substantial material damage.
2.4Caution
means that the accompanying text contains important information about the product,
handling the product or about a section of the documentation that is of particular
importance.
Note means that the accompanying text contains important information about the
product, handling the product or about a section of the documentation that is of
particular importance.
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IM-P309-02 MI Issue 2
2.5 Proper use of the device
Warning
The operator is responsible for ensuring that the material used in the
sensor and housing is suitable and that such material meets the
requirements for the fluid being used and the ambient site conditions.
The manufacturer accepts no responsibility in regard to such material
and housing.
Warning
In order for the device to perform correctly and safely, it must be shipped,
stored, set up, mounted, operated and maintained properly.
2.6 Returning your flowmeter for servicing or calibration
Before sending your flowmeter back to us for servicing or calibration, make sure it is
completely clean. Any residues of substances that could be hazardous to the
environment or human health are to be removed from all crevices, recesses, gaskets,
and cavities of the housing before the device is shipped.
Warning
The operator is liable for any loss or damage of any kind, including
personal injury, decontamination measures, removal operations and
the like that are attributable to inadequate cleaning of the device.
Any device sent in for servicing is to be accompanied by a certificate as specified in
Section 18!
The device is to be accompanied by a document describing the problem with the
device. Please include in this document the name of a contact person that our technical
service department can get in touch with so that we can repair your device as
expeditiously as possible and therefore minimize the cost of repairing it.
2.7 Replacement of the transmitter electronics
Before replacing the transmitter electronics, read the safety instructions in Section
10 Installation and servicing.
Warning
Make sure that you abide by the applicable standards and regulations
pertaining to electrical devices, device installation and process
technology when replacing the transmitter electronics. The highly
integrated electronic components in the device carry the risk of ESD
hazards and are only protected when installed in the device pursuant
to EMC standards.
The exchange of electronic components or board is described in details in Section 9
Maintenance and repair.
IM-P309-02 MI Issue 2
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Caution
The complete insert is to be replaced with all of its printed boards (except
for the memory chip (DSM)). This is particularly important for the
explosion-proof transmitter. The specified precision and interchangeability
of the electronics are only guaranteed if the complete insert is replaced.
2.8 Intended purpose
The electromagnetic flowmeter is to be used solely for measuring the volume flow of
liquids, suspensions and pastes with conductivity ≥ 5 µS/cm (≥ 20 µS/cm demineralized
cold water). The manufacturer accepts no responsibility for any damage or loss
resulting from any other use or from improper use.
Before using corrosive or abrasive fluids, the operator must test the resistance of all
wetted materials. We will be happy to assist you in testing the corrosion resistance
of wetted parts (for special fluids including cleaning fluids). However, sole responsibility
for ensuring that the device is used in accordance with the manufacturer’s
recommendations rests with the system operator. Minor changes of temperature,
concentration or the degree of contamination in the process may cause changes in
corrosion resistance. The manufacturer accepts no responsibility for any damage
with respect to corrosion resistance of wetted materials in a certain application.
Intended use
Referring to the Installation and Maintenance Instructions, name-plate and Technical
Information Sheet, check that the product is suitable for the intended use / application.
The product listed complies with the requirements of the European Pressure
Equipment Directive 97 / 23 / EC, carries the mark when so required. The product falls
within the following Pressure Equipment Directive categories:
Group 1
Gases
Group 2
Gases
Group 1
Liquids
Group 2
Liquids
ELM DN50
-
-
2
-
ELM DN150 – DN200
-
-
2
-
Product
i) The ELM flow meter range has been designed for use on water / condensate which
are in Group 2 liquids of the above mentioned Pressure Equipment Directive. The
product’s use on other liquids in Group 1 or Group 2 may be possible but, if this is
contemplated, Spirax Sarco should be contacted to confirm the suitability of the
product for the application being considered.
ii) Check material suitability, pressure and temperature and their maximum
and minimum values. If the maximum operating limits of the product are lower
than those of the system in which it is being fitted, or if malfunction of the product
could result in a dangerous overpressure or overtemperature occurrence, ensure
a safety device is included in the system to prevent such over-limit situations.
iii) Determine the correct installation situation and direction of fluid flow.
iv) This product is not intended to withstand external stresses that
may be induced by any system to which they are fitted. It is the responsibility of
the installer to consider these stresses and take adequate precautions to minimise
them.
v) Remove all protective covers from all connections and protective packaging where
appropriate, before installation on high temperature applications.
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2.9
Packaging, storaging, transport
Be careful not to damage the device while unpacking it. The device should be stored
in a clean, dry room until it is installed so as to prevent particulate matter from entering
the device. Make certain that the ambient temperature in the room in which the device
is stored lies within the prescribed range.
Check to ensure that the technical product data indicated on the delivery note is
consistent with the stipulated requirements. If, after the device is unpacked, it is sent
elsewhere to be installed, the original packaging and transport protection inserts
should be used.
2.10Returning the device for repair and servicing
Note: According to German waste disposal legislation, it is the owner’s or customer’s
responsibility to dispose of hazardous waste. Thus, any devices sent to us for servicing,
including their crevices and cavities, must be devoid of any such material.
When sending a device for repair, please confirm your compliance with this regulation
in writing. In the event any hazardous material is detected on or inside any device sent
to us for servicing, we reserve the right to bill the customer for the cost of disposing
of such material (see Section 19 "Decontamination certificate").
IM-P309-02 MI Issue 2
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3. General product information
3.1Manufacturer
Manufactured for Spirax Sarco by Heinrichs Messtechnik GmbH
Robert-Perthel-Str. 9 · D-50739 Köln
Telephone: +49 221 49708 – 0, Fax: +49 221 49708 - 178
Internet: http://www.heinrichs.eu, Email: mailto:[email protected]
3.2 Product type
Magnetic-inductive flowmeter based on Faraday’s law of induction
3.3 Product name
ELM
3.4 Designation/rating plate
Fig. 1 Transmitter Label
The rating plate states the following information:
Logo
Supplier’s logo
CE
CE Marking in accordance with
the applied EC Directives
Type
Type designation
Ser. No.
Serial number (for tracking reasons)
Tag No.
Operator’s measuring point
number (if stated in the order)
MF-Date
Year of manufacture
DN
Flange designation
PN
Pressure stage of flange
Materials
Material of wetted parts such as
pipe lining, material of electrodes
and seal
Tm
Medium temperature range
T amb
Ambient temperature range
C
Sensor constant
Fig. 2 Main Label
Degrees
Degrees of protection in
of
accordance with DIN EN
protection 60529:2000
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IM-P309-02 MI Issue 2
4. Steps prior to operation
It is essential that you read these operating instructions before installing and
operating the device. The device is to be installed and serviced by a qualified
technician only.
No instructions, wiring diagrams, and/or supplied software, or any portion
thereof, may be produced, stored, in a retrieval system or transmitted by any
means, electronic, mechanical, photocopying or otherwise, without prior written permission.
Although the materials in the present document were prepared with extreme care, errors
cannot be ruled out. Hence, neither the company, nor the programmer nor the author can be
held legally or otherwise responsible for any erroneous information and/or any loss or damage
arising from the use of the information enclo
No express or implied warranty is extended in regard to the applicability of the present
document for any purpose other than that described.
We plan to optimize and improve the products described and in so doing will incorporate not
only our own ideas but also, and in particular, any suggestions for improvement made by our
customers.
We reserve the right to change the technical data in this manual in the light of
any technical progress that might be made.
5. Applications
The electromagnetic flowmeter is used to measure or monitor the volume flow of fluids with
and without solids concentration, slurries, pastes and other electrically conductive media
while minimizing pressure drops. The conductivity of the medium must be at least 5 µS/cm.
Pressure, temperature, density and viscosity do not affect the volume measurements. Small
quantities of solid particles and small gas pockets are also measured as part of the volume
flow. A larger number of solid particles or gas pockets will result in failures and/or inaccuracy
of measurement.
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6. Operational mode and
system design
6.1 Operational mode
In 1832 Faraday suggested utilizing the principle of electrodynamic induction for measuring
flow velocities. His experiments in the Thames, though unsuccessful due to superimposed
polarization effects, are nonetheless regarded as the first in the field of magnetic-inductive
flow measurement. According to Faraday's law of electromagnetic induction, an electrical
field E is produced in a conductive liquid moving through a magnetic field B at a velocity v in
accordance with the vector product E = [v x B].
A fluid with a flow velocity v and a flow rate Q flowing through a tube (1) with an insulating
lining (2) produces a measuring-circuit voltage Um at the two electrodes (4) at right angles
to the direction of flow and the magnetic field B generated by the field coils (3). The strength
of this measuring-circuit voltage is proportional to the mean flow velocity and therefore the
volume flow rate.
6.2 System design
The electromagnetic ELM-*** flowmeter consists of a sensor, which picks up an induced
measuring signal from the medium flowing through the pipe, and a transmitter which transforms
this signal into standardized output signals (4-20 mA or pulses). The sensor is installed in the
pipe while the transmitter is mounted directly on the sensor.
3
B
UM
1
2
D
V
4
UM
Q
B
Fig. 3
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IM-P309-02 MI Issue 2
7. Performance characteristics
and environmental conditions
7.1 Measuring accuracy
7.1.1 Measured error
+/- [0.3% of actual value + 0.0001 * (Q at 10 m/s)]
Accuracy
Flow velocity v [m/s]
Fig. 4
7.1.2 Repeatability
+/- [0.15% of actual value + 0.00005 * (Q at 10 m/s)]
7.1.3 Reference conditions
In accordance with DIN EN 29104
Fluid temperature 22°C ± 4 K
Ambient temperature 22°C ± 2 K
Inlet section of ≥ 10 x DN and outlet section of ≥ 5 x DN
7.2 Fluid conductivity
≥ 5 µS/cm (≥ 20 µS/cm for demineralized water)
7.3 Influence of ambient temperature
-20°C to +60°C
7.4 Ambient temperature
- 20° Celsius to + 60°Celsius (-4°F to 140°F), below 0degC the readability of the LC display
will be limited
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7.5 Ambient temperature range
-20°Celsius to + 60°Celsius (-4°F to 140°F)
In the case of an outdoor installation, the device must be protected against direct solar
irradiation with a weather shield.
7.6 Storage temperature
- 25°Celsius to + 60°Celsius (-13°F to 140°F)
7.7 Degree of protection
SG2b standard housing, IP68 (NEMA 6P).
Caution:
Ingress protection IP 68 is only achieved if suitable and tightly
screwed down cable glands or conduits are used. If the cable
glands are only tightened manually water may leak into the
terminal compartment in the housing.
Danger:
Particular care must be taken if the window in the housing
becomes fogged over or discolored because moisture, water or
product might seep through the wire sheath into the terminal
compartment in the housing!
Warning:
Electromagnetic compatibility is only achieved if the electronics
housing is closed. Leaving the enclosure open can lead to
electromagnetic disturbances.
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IM-P309-02 MI Issue 2
7.8 Process conditions
7.8.1 Fluid temperature
The data sheet/rating plate of the connected transmitter must be observed. With directly
mounted transmitter on the sensor the heat entry must be considered from the process to
the transmitter.
7.8.2 State of aggregation
Liquid
7.8.3 Viscosity
No restrictions.
The data sheet/rating plate of the connected transmitter must be observed.
7.8.4 Fluid temperature limit
The data sheet/rating plate of the connected transmitter must be observed.
medium and the cleanliness of the electrodes.
7.8.5 Flow rate limit
The data sheet/rating plate of the connected transmitter must be observed.
7.8.6 Pressure loss
The data sheet/rating plate of the connected transmitter must be observed.
7.8.7 Empty pipe detection
Transmitters, which are equipped with a control unit BE3, have an on and off switch able empty
pipe detection. The operating reliability depends on the conductivity of the liquid medium and
the cleanliness of the electrodes.
7.9 Materials
7.9.1 Wetted parts
Parts
Standard
Lining
PTFE
Measuring and grounding electrodes
St. st. 1.4571, Hastelloy C4
7.9.2 Non-wetted parts
Parts
Standard
Flow tube
Stainless steel 1.4571
Housing
St. st. 1.4571, Hastelloy C4
DN 10 – 300
Varnished steel
Flange
Varnished steel
Terminal box for remote mount transmitter
Aluminum pressure casting, varnished
IM-P309-02 MI Issue 2
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8. Installation/conditions for use
8.1 Receipt of goods and transport
8.1.1 Receipt of goods
Check the packaging and contents for damage.
Inspect the supplied goods to ensure complete delivery and compare the consignment with
your order specifications.
8.1.2 Transport
The protection caps should only be removed immediately before installation of the device
in the pipe.
Never lift the devices by the mounted transmitter housing or terminal box for transport. When
transporting heavy devices, use slings. Place these around both process connections. Do
not use chains as these can damage the surface coating and the housing.
When transporting devices without lugs, and when looping the slings around the flow tube,
the center of gravity of the entire device can be higher than both attachment points of the
slings. When transporting the device ensure that it does not rotate or slip accidentally. This
could cause injury.
Sensors with a nominal width of more than DN 150 should not be lifted by the sheet metal
of the shell with a forklift truck. This could dent the sheet metal of the shell and damage the
internal solenoid coils. There is also the risk that the device could roll off the forks.
Fig. 5
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IM-P309-02 MI Issue 2
8.2 Installation conditions
The installation location in the pipe must be selected so that the sensor is always fully
filled with the fluid and cannot run empty. This can best be guaranteed if it is installed in an
ascending pipe or drain.
The measuring principle is generally independent of the flow profile of the fluid provided no
standing vortices reach into the area where the value is measured, such as downstream
from elbows or half-open sliding valves upstream from the sensor. In these cases measures
must be taken to normalize the flow profile. Practical experience ¬has shown that in most
cases a straight inlet section of ≥ 5 x DN and an outlet section of ≥ 2 x DN of the rated width
of the sensor is sufficient. The occurrence of strong electromagnetic fields in the vicinity of
the installed sensor is not permitted.
In order to be able to perform flow and return measurements, both sides of the sensor must
be provided with a straight pipe section with the rated width of the sensor and a length of 5
DN of the rated width of the sensor. It is advisable to install actuators, such as regulating or
shut-off devices, downstream from the sensor. The flow direction is marked on the sensor
with an arrow. When mounting sensors, always observe the specified screw torques.
The electrical system can be taken into operation when the sensor and the cables have been
installed and connected. In order to prevent measuring errors caused by gas pockets in the
fluid and damage lining of the sensor caused by negative pressure, the following points must
be observed.
8.2.1 Long pipe systems
As pressure surges may occur in long pipes systems, the regulating and shut-off devices
must be installed downstream from the sensor. When mounted in vertical pipes - in particular
in flow tubes with PTFE lining and in case of higher operating temperatures - the regulating
and shut-off devices must be installed upstream from the sensor. (Danger of vacuum might
be involved!)
8.2.2 Pumps
Do not mount the sensor on the suction side of a pump. (Danger of vacuum!)
8.2.3 Bypass
In order to easily dismount, empty and clean the sensor, a bypass pipe may be installed. The
bypass with a blind flange permits the fluid pipe to be cleaned without having to dismount the
flowmeter. This is recommended for highly soiling fluids.
8.2.4 Flow tube lining
As the flow tube is lined with PTFE, the flowmeter must be installed with special care. The tube
lining is bordered at the flanges (seal). This must not be damaged or removed as it prevents
the fluid from penetrating between flange and flow tube destroying the electrode insulation.
IM-P309-02 MI Issue 2
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8.3 Installation
Screws, bolts, nuts and seals are not supplied and must therefore be provided by the operator.
Install the sensor between the pipes. Please observe the required torques stated Section
8.3.4. The installation of additional grounding rings is described in Section 8.3.3. Use for
the flanges only seals in accordance with DIN 2690. Mounted seals must not reach into the
pipe cross section.
Caution!
Do not use conductive sealing compounds such as graphite. This could
result in a conductive layer on the inside of the flow tube that shortcircuits the measuring signal.
8.3.1 Installation in pipes with larger nominal sizes
The flowmeter can also be installed in pipes with larger nominal sizes by using pipe tapers
(e.g. flange transition pieces in accordance with DIN EN 545). However, the resulting pressure
loss must be taken into consideration. In order to avoid flow interruptions in the flow tube, a
reducing angle ≤ 8° for the tapers should be adhered to.
8.3.2 Horizontal and vertical installation
The flowmeter can be installed wherever required, whereby the intended x-y electrode axis
should run almost horizontal. A vertical Electrode axis should be avoided as otherwise the
accuracy could be affected by the gas pockets or the solid particles in the fluid.
Incorrect installation
for horizontal pipe system
Correct installation system
X
Y
X
Y
Fig. 6
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IM-P309-02 MI Issue 2
Installation examples
In order to avoid measuring errors caused
by gas pockets and lining damage caused
by negative pressure, the following points
must be observed:
Horizontal lining
Installation in a slightly ascending pipe.
Highest point in pipe system. Air bubbles
will accumulate in the tube. Incorrect
measurement!
Fig. 8
Fig. 7
Preferred assembly locations
Free inlet or outlet section
Preferably install the device in a drain.
The empty pipe detection circuit in the
transmitter is an additional safety feature
for recognizing empty or partially filled
pipes.
Fig. 9
Caution! There is the danger of
accumulations of solids in the drain. It is
advisable to arrange for a cleaning aperture
in the pipe.
Fall pipe over five meters long
In case of fall pipes that are more than
five meters long, arrange for a syphon or a
venting valve in order to avoid a negative
pressure in the pipe and damage to the
lining. In addition, this measure prevents
the flow from stopping so that air pockets
can be avoided.
> 5m
Fig. 10
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Long pipes
Always install regulating and shut-off devices downstream from the sensor.
(Danger of vacuum!)
Fig. 11
Installation of pumps
Do not install flowmeters on the suction side of pumps in order to avoid a negative pressure
and damage to the tube lining.
Fig. 12
If necessary, arrange for pulsation dampeners when using piston, diaphragm or hose pumps.
Please consider space requirements with respect to a potential uninstallation of
the device.
8.3.3 Grounding
For safety reasons and to ensure faultless operation of the electromagnetic flowmeter, the
sensor must be grounded. In accordance with VDE 0100 Part 410 and VDE 0100 Part 540 the
grounding connections must be at protective conductor potential. For metrological reasons,
the potential should be identical to the potential of the fluid. The grounding cable should not
transmit any interference voltage. For this reason do not ground other electrical devices with
this cable at the same time.
The measuring signal tapped at the electrodes is only a few millivolts. Correct grounding of
the electromagnetic flowmeter is therefore an important prerequisite for exact measurement.
The transmitter requires a reference potential to evaluate the measured voltage on the
electrodes. In the simplest case the non-insulated metal pipe and/or the connecting flange
may be used as a reference potential.
In case of pipes with an electrically insulating lining or pipes made of plastic, the reference
potential is picked up from a grounding electrode. This establishes the necessary conductive
connection to the fluid and is made of a chemical-resistant material.
The grounding cables are not included in the scope of supply and must be provided by the
plant operator.
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8.3.3.1 Grounding the ELM flowmeter
Ground Wire:
Min 4mm2 Cu
Earth bonding
- Uninsulated metal pipes only (not
required for plastic pipe installations)
Protective
Earth
Seal
Pipe
Seal
ELM
Pipe
Pipe
Flanges
Fig. 13
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8.3.4 Torques for studs and nuts
Electromagnetic flowmeters must be installed in the pipe system with special care due to the
fact that the flow pipe lining is made of PTFE which is malleable under pressure.
If the flange nuts are tightened too much, the sealing surface will deform. If the seals are
supposed to function properly, the correct torque is highly important.
Tighten the nuts crosswise, so that the process connections are tight. When tightening the
nuts for the first time, approximately 50% of the required torque should be reached, and for
the second time, the torque should be 80%. The required torque should reach 100% when
the nuts are tightened for the third time. For higher torques it is advisable to use protectors.
The following tables state the maximum torques:
20
Nominal size
(mm)
DIN Pressure
rating (bar)
Studs
Maximum torques
(Nm)
DN25
PN40
4 x M12
25
DN32-40
PN40
4 x M16
45
DN50
PN40
4 x M16
65
DN65
PN16
4 x M16
85
DN80
PN16
8 x M16
55
DN100
PN16
8 x M16
55
DN150
PN16
8 x M20
100
DN200
PN16
12 x M20
95
Nominal size
(inch)
ASME Pressure
rating (lbs)
Studs
Maximum torques
(Nm)
1"
Class 300
4 x ⅝"
15
1 ¼"-1 ½"
Class 300
4 x ¾"
35
2"
Class 300
8 x ⅝"
25
2 ½"
Class 150
4 x ⅝"
85
3"
Class 150
4 x ⅝"
80
4"
Class 150
8 x ⅝"
55
6"
Class 150
8 x ¾"
105
8"
Class 150
8 x ¾"
145
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8.4 Wiring
Caution!
Installation and wiring may only be performed when the auxiliary
power is switched off. Non-compliance can result in electric shock and
irreparable damage to electronic parts.
8.5 Nominal size and ranges
Volume flow depends on the flow velocity and the nominal size of the flowmeter. The
electromagnetic flowmeter has been designed in such a way that it operates within the range
of the flow velocities occurring in practical applications. The flow velocities have an upper
range value of between 0.5 m/s and 10 m/s.
The nominal size DN of the sensor must be selected, if possible, in such a way that the
flow velocity does not drop below the upper range value of 0.5 m/s. In case of fluids with
solid particles, the flow velocity should range between 3 m/s and 5 m/s in order to prevent
sedimentation in the sensor.
Size
Litres / sec.
m3/h
Qmin
Qmax
Qmin
Qmax
DN25 (1")
0.24
4.89
0.88
17.6
DN32 (1¼")
0.40
8.03
1.45
28.9
DN40 (1½")
0.54
10.75
1.94
38.7
DN50 (2")
0.87
17.33
3.12
62.4
DN65 (2½")
1.56
31.11
5.61
112
DN80 (3")
2.27
45.28
8.17
163
DN100 (4")
4
80
14.42
288
DN150 (6")
9
186
33.96
671
DN200 (8")
17
330
59.99
1188
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8.6 Ambient conditions
Ambient temperature range
For fluid temperatures > 60°C
As the sensors are an element of the pipe, these are normally thermally
isolated when installed to save energy and prevent accidental physical
contact. Due to the process temperature heat is introduced through the
support for securing the integral mount transmitter or the terminal box. For
this reason the thermal insulation of the sensor should not extend over more
than half of the support. It is essential to prevent inclusion of the installed
transmitter or the terminal box in the thermal insulation.
The maximum permissible fluid temperature range is stated on the rating plate of the
respective version.
8.6.1 Maximum ambient temperature depending on the fluid temperature
Max. ambient temperature (°C)
70
65
60
55
50
45
40
35
30
25
20
60
70
80
90
100
110
120
Max. fluid temperature (°C)
130
140
150
Fig. 14
8.6.2 Storage temperature range
The storage temperature range is identical to the ambient temperature range.
8.6.3 Climatic category
In accordance with DIN EN 60654-1; not weather-protected Class D1 locations exposed
directly to open-air climate.
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8.6.4 Ingress protection
The sensor meets the requirements of the protection class IP 67. The following must be
observed to ensure compliance with protection class IP 67 when the device has been installed
or serviced:
-
The housing seals must be clean and undamaged when placed in the sealing groove. If
necessary the seals must be cleaned or replaced.
Tighten the screw cap of the transmitter.
The cables used for connection must comply with the specified outer diameter for the
cable glands used.
Tighten the cable glands firmly.
Loop the cable in front of the cable gland. Any moisture running along the cable can then
drip off and not penetrate the device. Always install the device so that the cable gland
does not face upwards.
Any unused cable glands must be closed with a plug which is suitable for the respective
protection class.
Fig. 15
8.6.5 Shock resistance/vibration resistance
The flowmeter should be protected from extreme shocks and vibrations, which could cause
damage.
Maximum permissible shock/vibration: 15 m/s2 (10 to150 Hz).
IM-P309-02 MI Issue 2
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8.7 Process pressure
The maximum permissible process pressure PS is stated on the rating plate and depends
on the fluid temperature.
PN40
bar
PN25
PN16
PN10
PN6
°C
Fig. 16
8.8 Fluid temperature
The maximum permissible fluid temperature of the device depends on the version and the
lining material of the flow tube and is stated on the rating plate. The German Industrial Safety
Act stipulates that very cold or hot components of working equipment must be provided with
guards which prevent physical contact of workers with the respective parts. For this reason
and also to save energy, in practical applications at temperatures of > 60°C, all pipes and
installed measuring instruments are normally thermally insulated.
Refer to Section 8.6 for information on the relation between the fluid temperature and the
ambient temperature limits.
The temperature ranges for use of the device are listed below for the lining materials
Lining material
Fluid temperature ranges
PTFE
- 20°C to 150°C
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IM-P309-02 MI Issue 2
8.9 Electrical connection
Mains:
24 Vdc
Power input:
10 VA
Fuse:
5x20mm DIN 41571-3
Voltage = 24 Vdc
Current = 1 AT
Rated voltage = 250 Vac
Breaking capacity = 80A / 250Vac
e. g. Fa. Wickmann series 201
±15%
8.10 Process terminals
Terminals located at the rear side of the transmitter’s housing.
Fig. 17
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25
8.11 Output Signal
8.11.1 Isolation
All signal outputs are electronically isolated from each other and ground (PE)
8.11.2 Analog output
A single 0/4-20mA current output is fitted with optional HART communications and can be
configured to output flow rate in volumetric or velocity units.
8.11.3 Pulse output
A single pulse output is fitted.
Passive via optocoupler:
U = 24 V
Umax = 30 V
Imax = 60 mA
Pmax = 1.8 W
Pulse duration: 50ms (default value)
Pulse duration adjustable from: 0.1 to 2000ms
Mark-to-space ratio: 1 to 1 if the maximum pulse duration is not met
When adjusting the pulse duration, a check is carried out to ensure the pulse duration does
not exceed the upper limit. If the upper limit is exceeded an error message will be displayed.
Frequency: fmax = 1 kHz
Pulse value: 1 pulse/unit. The pulse value can be multiplied by a factor between 0.001 and
100.0 in decade increments of the selected units e.g. m3
Status output: for forward and reverse flow, MIN and MAX flow rate or alarm
8.11.4 Failure signal
A failure in the meter can be indicated via the current output or the status output.
The current output can be set to alarm of I < 3.8mA of I > 22mA.
The status output can be configure as a make or break output.
8.11.5 Current output load
Standard version: 600 Ohms
HART version: minimum load > 250 Ohms
8.11.6 Damping
Programmable: from 0 to 60 seconds
8.11.7 Low flow cut-off
Configurable: from 0 to 20% of maximum flow.
If the measured value is lower than the low flow cut-off set value the flow rate will show zero
and the analogue output will switch to 0/4 mA and the pulse output will stop generating pulses.
The configurable hysteresis only takes effect on one side of this limit.
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IM-P309-02 MI Issue 2
8.12 Mains and signal terminals
+Loop
-Loop
+Status
-Status
+Pulse
-Pulse
ELM mains and signal terminals
Fuse
Fig. 18
Process terminals
Terminal
Label
1
PE
2
N
Polarity
Function
Protective conductor
Mains
3
L
4
Pulse
-
Pulse output (passive)
5
Pulse
+
Pulse output (passive)
6
Status
-
Status output (passive)
7
Status
+
Status output (passive)
8
Current Out.
-
Current output (active)
9
Current Out.
+
Current output (active)
IM-P309-02 MI Issue 2
Mains
27
8.13 HART® connection
A number of options are available for HART® communication. However, for all these options
loop resistance must be less than the maximum load specified in Section Error! Reference
source not found. Error! Reference source not found. (Error! Bookmark not defined. ). The
HART® -Interface is connected via terminals 8 and 9 of the active current output. The minimum
load impedance must be 250 Ω.
8.14 Wiring diagram for the separate version
For cable specification see section 8.16. The outer shield has to be connected to the metalized
cable glands at both ends. The inner shields are connected to each other and are plugged
into the terminal labeled "Schirm / shield". They are related to the potential of the function
earth FE. (See also section 11.2 Potentials.)
E2
E1
FE
SP+
FE
SP-
Transmitter
Note: terminal diagram
Schematic representation of a
wiring between flow sensor and
remote mounted transmitter.
Terminal diagram is always
shown is the documentation of
flow sensor.
Caution:
E2
E1
FE
SP+
FE
SP-
Do not connect or disconnect the
field coil cable before the primary
power of the meter has been
disconnected!
Sensor
Fig. 19
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IM-P309-02 MI Issue 2
8.15 ELM sensor terminals
Terminal
1
2
3
4
5
6
Label
FE
SP SP +
FE
E1
E2
Sensor terminals
Polarity
+
Function
Screen field coil
Field coil
Field coil
Shield / Functional ground
Elektrod 1
Elektrod 2
1
2
3
4
5
6
FE
SP-
SP+
FE
E1
E2
Observe also the advice
in chapter 7 Environmental conditions.
Fig. 20
8.16 Cable specification
If the transmitter is mounted separately from the sensor, the following cables must be used:
Electrode cable and field coil cable as shielded twisted pair. In order to protect the cable from
external interference, the twisted-pair wires are covered by an additional, overall shield e.g.
LIYCY-CY TP 2 x 2 x 0.25 mm².
At cable length more than 10m a wire cross section of at least 0.75 mm² is required e.g.
SLIYCY-C11Y ( 2 x ( 2 x 0.75 mm²)).
The outer shield is grounded by means of special EMC-compliant cable glands at both ends
of the cable.
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29
9. Maintenance and repair
The transmitter ELM is designed as maintenance-free performance. It contains no parts,
which have to be replaced or adjusted cyclically.
While commissioning or maintenance, mains power must be switched off. Do not connect or
disconnect the wirings between sensor and transmitter while power is on!
9.1 Mains fuse
The mains fuse is located in the terminal compartment. Before exchanging the fuse, the
power has to be switched off. Check, if voltage free. The fuse may only be exchanged by the
exactly same kind of fuse! (See also section 8.9 Electrical connection.)
9.2 Replacement of terminal board
The terminal board is located in the terminal compartment. Before exchanging the board,
the power has to be switched off. Check, if voltage free. The board may only be exchanged
by the exactly same kind of board.
To exchange the terminal board, all pluggable connectors have to be released. The board is
fixed by 4 screws. To exchange the board, these screws have to be loosened.
Installing the board, the screws have to be secured again by toothed washers. Only after all
connectors are plugged in, the power can be switched on again.
9.3 Exchange of transmitter electronic
The transmitter electronic may be exchanged only as complete module. With the exchange of
individual components the transmitter is afterwards no longer calibrated neither regarding its
measuring characteristics nor its analog outputs. The exchange has to be done as described
in the following:
-
Mains power off.
Unclamp the 6 pole tab connector in the terminal compartment.
Remove the control unit BE2 or decoration foil inside the electronic compartment.
Unplug the green connector on the power supply board.
Disconnect the sensor’s wires on the power supply board.
Screw out all 3 studs consistently and simultaneously.
Pull out carefully the electronic boards.
The data memory chip (DSM) has to be plug out of the socket and to be placed into the
same socket of the new electronic stack.
Insert the new electronics and feed the tab connection again into the terminal compartment
through the hole in the compartment partitions wall.
Reverse to item 1 to 6 of this list assemble the transmitter.
Before powering on, check all connectors to be plugged in correctly and all wires and
devices are fixed.
After the exchange the transmitter is calibrated by the take-over of the data memory chip
(DSM) for the sensor. All totalized counts and settings are taken on.
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IM-P309-02 MI Issue 2
10. Dimensions and weight
10.1 Dimension drawing of meter assemblies
205
115
108
Ø110
B
M20 X 1.5 cable entry point (2)
ØC
D
ØA
ØA
DN25 (1")
PN40
ASME
Class 300
PN16
ASME
Class 150
DN32 (1¼")
B
284
ØC
D
Weight (kg)
(approximate values)
72
82
4.4
DN40 (1½")
290
92
DN50 (2")
295.5
107
DN65 (2½")
307
127
DN80 (3")
313
138
DN100 (4")
323
162
DN150 (6")
351
218
134
10.4
DN200 (8")
379
274
219
12.4
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104
5.4
5.4
6.4
31
10.2 Installation and servicing
The devices described in this manual are to be installed and serviced only by qualified
technical personnel.
Warning
Before servicing the device, it must be completely switched off, and
disconnected from all peripheral devices. The technician must also
check to ensure that the device is completely off-circuit. Only original
replacement parts are to be used.
Spirax Sarco accepts no liability for any loss or damage of any kind arising from
improper operation of any product, improper handling or use of any replacement part,
or from external electrical or mechanical effects, overvoltage or lightning. Any such
improper operation, use or handling shall automatically invalidate the warranty for
the product concerned.
Contact our customer service department if your device needs repair or if you need assistance
in diagnosing a problem with your device
11. Commissioning
11.1 Installation of magnetic-inductive flowmeters
At the installation of the magnetic-inductive flow sensor the instructions and notes of
the assembly instructions and operating manuals have to be followed. Also, observe the
grounding, potential equalization and internal grounding guidelines.
11.2 Potentials
All outputs are electrically isolated from the auxiliary power, the sensor circuit and from
each other. The housing and the interference suppression filters of the power supply are
connected to PE.
The electrodes and measuring electronics are related to the potential of the function earth
FE of the sensor. FE is not connected to PE, but may be connected with each other in the
sensor junction box. If the sensor is grounded by using ground disks (earthing rings), these
must in connected with the function earth FE.
At a separate assembly of sensor and transmitter the outer screen of the connecting cable is
connected to the transmitter housing and has PE potential. The inner screens of the electrode
line are connected to FE inside the junction box of the sensor and to the mass (Gnd) of the
transmitters electronics.
Details of all wirings, terminals and drawing can be found in the section 8.9 Electrical
connection .
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IM-P309-02 MI Issue 2
11.3 Cathodic protective units
Using a cathodic protective unit to avoid corrosion, which put a voltage to the tube wall, it
must be connected to terminal FE. The transmitter boards, control panel and internal switches
are on the same potential as FE.
Warning
According to EN 50178:1997 all electrical circuits with protective safety
isolation without any protection against contacts must observe the
following maximum voltages:
Maximum AC voltage (root mean square value) 25 V
Maximum DC voltage 60 V
It is strictly forbidden to connect FE to any higher voltage!
11.4 Zero point calibration
In order to ensure that precise measurements are obtained, zero point calibration is to be
realized the first time the device is put into operation and before any regular operations are
carried out. Zero point calibration is to be carried out using a fluid.
The zero calibration procedure is as follows:
- Install the sensor as described in the manufacturer’s instructions.
- Check to ensure that the sensor is completely filled with fluid and that there are no gas
bubbles in the flow tubes.
- Define the process conditions such as pressure, temperature and density.
- Close a potential shut-off device behind the sensor.
- Operate the transmitter in accordance with the instructions in chapter 11.4 Zero point
calibration.
- Make sure that sufficient time is allowed for the electronics to warm up.
- Allowing fluid to flow through the sensor during the zero calibration procedure will skew
the zero point and result in false readings.
11.5 Startup conditions
The device is not subject to specific startup conditions. However, pressure surges should
be avoided.
IM-P309-02 MI Issue 2
33
12. System design
The meter can be used to perform measurements with any liquid, conductive media, providing
that the sensor’s material is suitable for the product being used.
12.1 Standard version
As standard ELM has 1 active 0/4 … 20 mA analogue output, 1 passive pulse or frequency
output and 1 passive status output.
12.2 Display and Keypad
A LCD display with backlight is a standard feature. The display shows measured values as
well as diagnostics. With 6 keypads customers are able to configure comfortable and simple
the transmitter without any other tool.
Fig. 21
12.3 Optional equipment
12.3.1 HART-Interface
An analog 0/4–20 mA output is a standard feature and digital data transmission via HART®
protocol as an optional feature of the device. A retrofit by customer is not possible.
12.3.2 Empty pipe detection
Transmitters, which are equipped with a control unit BE3, have an on and off switch able
empty pipe detection. The operating reliability depends on the conductivity of the liquid
medium and the cleanliness of the electrodes. As bigger the conductivity is, as more reliable
operates the empty pipe detection. Insulation coatings on the electrodes surface worse the
empty pipe detection.
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IM-P309-02 MI Issue 2
12.3.3 Data memory chip DSM
The replaceable data memory chip (DSM) is an EEPROM device in DIL-8 housing, located
in a socket on the power supply board. It contains all characteristic data of the sensor e.g.
sensor constant, version or serial number. Consequently, the memory module is linked to the
sensor and in case of a transmitter replacement it has to remain by the sensor!
After replacing the transmitter or its electronics, the DSM will be installed in the new
transmitter. After the measuring system has been started, the measuring point will continue
working with the characteristic values stored in the DSM. Thus, the DSM offers maximum
safety and high comfort when exchanging device components.
Electronic, Power supply board ELM
Slot DSM
Fig. 22
At any exchange watch the polarity of the memory chip. Pin 1 is signed by a dot or a notch.
12.3.4 Safety of operation
A comprehensive self-monitoring system ensures maximum safety of operation.
Potential errors can be reported immediately via the configurable status output. The
corresponding error messages will also be displayed on the transmitter display. A failure of
the auxiliary power can also be detected via the status output.
When the auxiliary power fails, all data of the measuring system will remain in the DSM
(without back-up battery).
All outputs are electrically isolated from the auxiliary power, the sensor circuit and from
each other.
IM-P309-02 MI Issue 2
35
13. Configuration and operation
13.1 Introduction
The ELM can be operated depending on equipment by using the HART® interface.
In the following, the ELM operation and parameterization using the keypad are described.
The keypad is located in the electronic compartment and covered by an inspection window.
LC Display
Keypad
Enter
Escape
Cursor up
Cursor left
Cursor down
Cursor right
Fig. 23
13.2 Display
The ELM has an integrated back lighted, alphanumeric display with two 16-character lines
(format 16 x 60 mm). Measurement data and settings can be read directly from this display.
The LCD display is designed be operated at temperatures ranging from − 20°C to + 60°C (-4° F to 140°F) without incurring any damage. However, at freezing or near-freezing
temperatures, the display becomes slow and readability of the measured values is reduced. At
temperatures below − 10 C° (14°F), only static values (parameter settings) can be displayed.
At temperatures exceeding 60 C° (140°F), contrast decreases substantially on the LCD and
the liquid crystals can dry out.
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IM-P309-02 MI Issue 2
14. Operating modes
The ELM can be operated in the following modes:
1. Display mode: In display mode, measured values can be displayed in various combinations
and ELM settings can also be displayed. Parameter settings cannot be changed in this mode.
Display mode is the standard (default) operating mode when the device is switched on.
Programming mode: In programming mode, ELM parameters can be redefined. After entering
the correct password, changes that are permissible for the customer (customer password)
or all functions (service password for technicians) can be realized.
14.1 Operation
14.1.1 Operation interface
Functional classes are displayed as headings beneath which displays and parameters are
shown in logical groups.
Beneath this is the menu level, which lists all measured value displays or the headings for
their underlying parameters (parameter level).
All functional classes are interlinked horizontally, while all subpoints that are assigned to a
functional class are displayed beneath the relevant class.
Legend
Headline
Main menu
Functional class
Functional class
Functionial class
Functionial class
Function with
Function
with
numerical
Input
numerical Input
Numerical Input
153.40
Parameter level
Display
Display
Menu level subpoint
Selection
[no]
___________
no
yes
Function
valueFunction
selected
value
selected
from list
from list
Fig. 24
14.1.2 The keys and their functions
There are sic keys to change the settings.
Caution!
Do not press these keys with sharp or sharp-edged objects such as
pencils or screwdrivers!
IM-P309-02 MI Issue 2
37
Cursor keys: Using the cursor keys, the operator can change numerical values, give YES/
NO answers and select parameters. Each key is assigned a symbol in the following table:
Descriptor
Symbol
Cursor key, arrow to the right
>
Cursor key, arrow to the left
<
Cursor key, arrow to the top
>
Cursor key, arrow to the bottom
<
Esc key: The "Esc" key allows you to cancel the current action. Pressing Esc moves you
to the next higher level where the operator can repeat the action. Pressing Esc twice moves
you directly to the MEASURED VALUES functional class.
ENTER key: Pressing  (ENTER key) moves you from the menu level to the parameter level.
You confirm all entries with the  key.
LC Display
Keypad
Enter
Escape
Fig. 25
Cursor up
Cursor left
Cursor down
Cursor right
14.1.3 Functional classes, functions and parameters
Functional classes are written in all upper case letters (headings). The functions beneath
each functional class are written in upper and lower case.
The various functional classes and functions are describes in Section 15.11„ UMF2 (B)
transmitter functions".
The lower lines contain the following elements:
- Informational texts
- YES/NO answers
- Alternative values
- Numerical values (with dimensions, if applicable)
- Error messages.
If the user attempts to modify values for any of these parameters without entering the required
password, the message "Access denied" will be displayed (see also section 14 Operating
modes and 14.1.3.3 Passwords)
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IM-P309-02 MI Issue 2
14.1.3.1 Selection window / make a selection
In the selection window, the first line of the LCD always contains the heading, while the second
line displays the current setting. This setting is shown in square brackets if the system is in
Programming mode.
Function name
[Selection]
In Programming mode (see section 14 Operating modes), i.e. after a password has been
entered (see 14.1.3.3 Passwords and 15.2 PASSWORD functional class ), the operator can
navigate to the desired setting by using the  key or the
key and the operator can then
confirm your selection by pressing  (ENTER key). To retain the current setting, press Esc.

14.1.3.2 Input window / modify a value
In the input window, the first line of the LCD always shows the heading, while the second
line shows the current setting.
Example:
Function name
-4,567 Unit
These modifications can only be made in Programming mode (refer to 14 Operating modes),
which means that a correct password (see 14.1.3.3 Passwords and 15.2 PASSWORD functional
clas) must be entered. To move the cursor from one decimal place to the next, use the < or >
keys. To increase the value of the decimal place just under the cursor by "1," use the  key,
and use
key to lower the number by 1. To change the minus and plus sign, place the cursor
in front of the first digit. To confirm and apply the change, press enter. To retain the current
value, press Esc.

14.1.3.3 Passwords
Programming mode is password protected. The customer password allows all changes to be
made that are permissible for customers. This password can be changed when the device is
first put into operation. Such changes should be kept in a safe place.
The ELM customer password in the device when delivered is 0002.
The service password allows for modification of all ELM functions. This password is not given
to customers.
For further information on customer passwords, see Section 15.2 PASSWORD functional class.
IM-P309-02 MI Issue 2
39
15. ELM functions
The software functions of the ELM transmitter are divided into functional classes, are arrayed
in a circle and can be navigated by using the < or > cursor keys. To go back to your starting
point (the measured values functional class) press Esc.
Fig. 26
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IM-P309-02 MI Issue 2
In the following, all software functions that can be accessed using the customer password
are described. Functions that are only accessible to the vendor (service functions) are not
described in the present document.
15.1 Measured values functional class
The measured values functional class contains all functions for displaying the measured values.
Fig. 27
IM-P309-02 MI Issue 2
41
15.1.1 Volume flow rate
If you select the function "volume flow," the following will be displayed (example):
Volume flow
100.0 l/h
The LCD shows the current volume flow rate. You define the display unit in the functional
class FLOW using the function "volume flow unit".
15.1.2 Forward flow counter 1
Forward flow counter 1 and forward flow counter 2 are independent counters that can also be
reset separately. With counter 1, for example, you can measure the yearly or monthly volume.
If you select the function "forward flow counter 1", the following will be displayed (example):
Counter 1 forw.
+ 000001.0 l
The LCD shows the current value of forward flow counter 1. You define the display unit in the
functional class COUNTERS using the function "unit of counter".
15.1.3 Forward flow counter 2
The function is identical with the function of forward flow counter 1. For example, forward flow
counter 2 can be used as a daily counter. If you select the function "forward flow counter 2",
the following will be displayed (example):
Counter 2 forw.
+ 000001.0 l
The LCD shows the current value of forward flow counter 2. You define the display unit in the
functional class COUNTERS using the function "unit of counter".
15.1.4 Reverse flow counter
If you select the function "reverse flow counter," the following will be displayed (example):
Counter reverse
000000.0 l
The LCD shows the current value of the reverse flow counter. You define the display unit in
the functional class COUNTERS using the function "unit of counter".
15.1.5 Flow velocity
If you select the function "flow velocity," the following will be displayed (example):
flow velocity
1.5 m/s
The LCD shows the current value of the mean flow velocity of the medium. The display unit is
always meters per second (m/s). The mean velocity is calculated from the measured volume
flow and the flow area of the meter tube. In order to calculate the flow area of the meter tube,
enter the inside diameter of the meter tube. To do so, use the "inside diameter" function in
the functional class SETTINGS SENSOR + ELM.
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IM-P309-02 MI Issue 2
15.1.6 Relative flow rate
The relative flow rate is the percentage ratio of the (current) volume flow and the entered
upper range value of the volume flow. You set this upper range value in the functional class
FLOW using the function "volume flow QV URV."
The calculation of the relative flow rate is based on the following formula:
relative flow rate = 100% x (Qabs – lower range limit) / (upper range limit – lower range limit)
If you select the function "relative flow," the following will be displayed (example):
Relative flow
95.3%
15.1.7 QV + Forward flow counter
If the function "QV+ forward flow counter 1" is selected, in the first line the actual flow will
be displayed:
XXX.X l
XXX.XX l/h
In the second line the LCD shows the current value of the forward flow counter 1. The displayed
unit is defined in the functional class FLOW using the function "volume flow unit". The unit
of the counter is defined in the functional class COUNTER using the function "counter unit".
15.1.8 QV + Forward flow counter 2
If the function "QV+ forward flow counter 2" is selected, in the first line the content of the
actual flow will be displayed:
XXX.X l
XXX.XX l/h
In the second line the LCD shows the current value of the forward flow counter 2. The displayed
unit is defined in the functional class FLOW using the function "volume flow unit". The unit
of the counter is defined in the functional class COUNTER using the function "counter unit".
15.1.9 QV + flow velocity
If the function "QV + flow velocity" is selected, the following will be displayed:
XXX.X l/h
XXX.X m/s
The first line shows the actual volume flow rate and the second line the mean flow velocity
of the medium. The displayed volume flow unit is defined in the functional class FLOW using
the function "volume flow unit", the unit of the medium’s velocity is always m/s.
IM-P309-02 MI Issue 2
43
15.1.10 Display mode during startup
By choosing the Display mode during startup function the operator can define the default
display. After the operator switched the device on and did not touch any keys for a longer
period of time, the defined default display will be shown.
Display mode
(QV)
According to the description in Section 14.1.3.1 "Selection window / make a selection", one
of the following default displays can be selected.
QV (volume flow rate),
Counter 1 forward flow,
Counter 2 forward flow,
Counter reverse flow,
Velocity,
QVabs + QVrel,
QV + counter 1,
QV + counter 2,
QV + velocity,
and raw values.
15.1.11 Raw values
The "Raw value display" supports fault diagnostics and trouble shooting. Please inform our
service department about the clear text error messages and contents of the "Raw value
display".
xxx.xxx ggooo
iiii gguuu
The displayed values are decimals and have the following meaning:
xxx.xxx:
ggooo:
iiii:
gguuu:
44
Is a gauge for the measured electrode voltage.
Is a gauge for the upper value of the reference calibration.
Is a gauge for the current to generate the field coil’s magnetic field.
Is a gauge for the lower value of the reference calibration.
IM-P309-02 MI Issue 2
15.2 Password functional class
The password functional class is comprised of the functions for entering and changing the
customer password and entering the service password. To cancel the current action, press
Esc.
Fig. 28
15.2.1 Customer-password
After selecting the Customer password function and pressing enter, the following will be
displayed:
Password?
0000
According to the description in Section 14.1.3.2 "Input window / modify a value ", the password
can be changed.
If the entered password is correct, the following message will be displayed:
Password
valid
If the entered password is not correct, the following message will be displayed:
Password
invalid
IM-P309-02 MI Issue 2
45
The customer password in the device when delivered is 0002.
A valid customer password allows all software parameter changes to be made that are
permissible for customers. After the operator switched the device off or did not touch any
keys for about 15 minutes, the authorization to change settings related to password entry will
automatically be canceled. If the operator does not enter a valid password, all settings can
be displayed but not changed. Parameter changes via HART may be carried out any time
without entering password.
15.2.2 Change customer password
After entering a valid customer password, you may change the existing password and enter
a new one. After selecting the Change customer password function and pressing enter, the
following will be display
Enter New password
0000
According to the description in Section 1.2.3.2 "value" the current value can be changed.
Press  to confirm and save the new password. Make sure that you entered the desired
password!
A copy of the password should be kept in a safe place. Reactivation of a
transmitter at the vendor’s site due to a lost password is not part of our warranty!
15.2.3 Service password
You do not need the service password for setting the functions necessary for operation.
The service password is reserved for service technicians and not provided to customers.
Correct settings are essential for proper operation of the device (e.g. parameterization and
calibration values).
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15.3 Counter functional class
The counters functional class is comprised of the following functions:
Fig. 29
To change the current settings, enter the customer password. Otherwise, the settings can
only be displayed but not changed. To cancel the current action, press Esc.
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15.3.1 Unit of counters
After choosing the Unit of counters function and pressing enter, the current forward and
reverse counter unit will be displayed:
Accumulation of:
(kg)
According to the description in Section 14.1.3.1 Selection window / make a selection, one of
the following units can be selected.
Volume units:
Mass units:
m³ and l, kg and t.
as well as USG, UKG, ft³ or
When the unit is changed, the counters will be reset to 0.00 automatically.
The mass unit only makes sense if density factor has been programmed for mass flow
calculation. Press  to confirm and save the selection. Forward and reverse counters will
now show the selected unit.
15.3.2 Reset counter
The ELM has 3 independent totalizing counters. Counter 1 and Counter 2 for forward flow
and a reverse flow counter. Each of them can be reset individually on the initial value 0.00.
To reset one of the totalizing counters, you definitely need to toggle to [yes].
Reset counter
(no)
According to the description in Section 14.1.3.1 Selection window / make a selection, "yes" or
"no" can be selected. By pressing Esc or toggling to (no) the operator can cancel the current
action without changing the counter readings.
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15.4 Measurement processing functional class
The measurement processing functional class is comprised of all functions that affect the
processing of the measured values.
To change the current settings, enter the customer password. Otherwise, the settings can
only be displayed but not changed. To cancel the current action, press Esc.
Fig. 30
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15.4.1 Damping
The damping value is intended to dampen abrupt flow rate changes or disturbances. It affects
the measured value display and the current and pulse outputs. It can be set in intervals of 1
second from 1 to 60 seconds. After choosing the Damping value function and pressing enter,
the following selection field will be display
Damping
03 s
The current damping value will be displayed. According to the description in Section 14.1.3.2
"Input window / modify a value", the current value can be changed. After setting the new
damping value, press  to confirm your entry.
15.4.2 Low flow cut-off
The value for low flow cut-off (low flow volume) is a limiting value stated as a percentage that
relates to the upper-range value of the flow rate. If the volume drops below this value (e.g.
leakage), the displayed value and the current outputs will be set to "ZERO." The value for low
flow cut-off can be set from 0 to 20% in 1-percent increments. After choosing the Low flow
cut-off function and pressing enter, the following selection field will be displa
Low flow cut-off
00%
The low flow volume will be displayed. According to the description in Section 14.1.3.2 Input
window / modify a value, the current value can be changed. After setting the new low flow
volume, you confirm your entry with en
15.4.3 Low flow cut-off hysteresis
The hysteresis of the low flow volume is the flow rate expressed as a percentage of the upper
range value by which the volume must fall below or surpass the set low flow volume in order
to activate or deactivate the function. The hysteresis of the low flow volume can be set in
1-percent increments from 0 to 10%. After selecting the Low flow cut-off hysteresis function
and pressing enter, the following selection field will be display
Low flow cut-off
hysteresis 00%
The current hysteresis will be displayed. According to the description in Section 14.1.3.2 "Input
window / modify a value", the current value can be changed. After setting the new hysteresis
value, you confirm your entry with en
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15.4.4 Zero point calibration
Using the Zero point calibration function the operator can recalibrate the zero point of your
meter in the measuring system. Zero point calibration is to be realized after any installation
procedure or after any type of work has been performed on in the pipes near the sensor.
Refer also Section 11.4 Zero point calibration.
CAUTION:
This function may only be carried out if it is certain that the fluid in the
sensor is not flowing. Otherwise, the flow rates measured subsequently
will be incorrect. The sensor must be completely filled with fluid. A
partially filled sensor or air bubbles will lead to an incorrect zero point
calibration.
After choosing the Zero point calibration function and pressing enter, the current remaining
flow will be display
0.00 l/h
cal.? (no)
According to the description in Section 14.1.3.2 Selection window / make a selection, "yes" or
"no" can be selected. By pressing Esc or toggling to [no] the operator can cancel the current
action. Enter [yes] to have the zero point recalibrated.
15.4.5 Filter
For a noise reduction of the actual readings a signal filter can be used. Following settings
are available:
• none
• weak
• mid (standard factory setting)
• strong
Selecting "weak" or "mid" influences the dynamics of the actual readings not or just very
less. The setting of damping time (see section 8.11.6 "Damping") determines the dynamic
behaviour of sensor and transmitter. Filter "strong" operates as an intense low pass filter
to reduce the noise of the actual readings. Then if setting the damping time shorter than 3
seconds, the low pass filter determines the dynamic behavior to actual reading’s variations.
According to the description in Section 14.1.3.2 Selection window / make a selection, noise
filter type can be selected.
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15.5 Flow functional class
The FLOW functional class is comprised of functions that affect lower- and upper-range
values and the processing of the measured flow rates. In Programming mode (see section
14 Operating modes), i.e. after a password has been entered (see 14.1.3.3 Passwords, 15.2
PASSWORD functional class), the operator can change the settings regarding flow.
Fig. 31
To change the current settings, enter the customer password. Otherwise, the settings can
only be displayed but not changed. To cancel the current action, press Esc.
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15.5.1 Volume flow QV unit
Using this function, the operator can define the physical unit for all display functions, limit
values and the upper-range value of volume flow. After choosing the Volume flow QV unit
function and pressing enter, the following selection field will be displa
Volume flow QV in
(l/h)
According to the description in Section 14.1.3.1 Selection window / make a selection, one of
the following units can be selected:
l/h, l/min, l/s
m³/h, m³/min, m³/s
USG/h, USG/min, USG/s,
UKG/h, UKG/min, UKG/s,
Kg/h, t/h,
ft³/s, MGD (Mega US Gallons / day).
Press  to confirm and save the selection.
15.5.2 Volume flow lower-range value
This function allows the operator to set the lower-range value for volume flow. The lower-range
value takes on the unit defined using the Volume flow unit function. The lower-range value will
scale the current and frequency outputs assigned to volume flow. After choosing the Volume
flow lower-range value function and pressing enter, the following selection field will be display
QV LRV = 0%
XXXXX.XX l/h
The current lower-range value for volume flow will be displayed. According to the description
in Section 14.1.3.2 Input window / modify a value, the current value can be changed.
15.5.3 Volume flow upper-range value
This function allows the operator to set the upper-range value for volume flow. The upperrange value takes on the unit defined using the Volume flow unit function. The upper-range
value will scale the current and frequency outputs assigned to volume flow. After choosing
the Volume flow upper-range value function and pressing enter, the following selection field
will be display
QV URV = 0%
XXXXX.XX l/h
The current upper-range value for volume flow will be displayed. According to the description
in Section 1.2.3.2 Input window / modify a value, the current value can be changed.
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15.5.4 Volume flow limit MIN
The MIN limiting value for volume flow can be evaluated via the status output. You enter the
value as a percentage of the set upper-range value. If the volume flow is lower than that limit
value, the status output will be set in case the corresponding assignment has been made.
If the alarm function has also been activated for the current output, the applied current will
change to < 3.2 mA or > 20.5 mA / 22 mA. After choosing the Volume flow limit MIN function
and pressing enter, the following selection field will be display
Volume flow limit
MIN = 10%
The current MIN upper-range value for volume flow will be displayed. According to the
description in Section 14.1.3.2 "Input window / modify a value", the current value can be
changed.
15.5.5 Volume flow limit MAX
The MAX limiting value for volume flow can be evaluated via the status output. You enter the
value as a percentage of the set upper-range value. If the volume flow surpasses this limit
value, the status output will be set in case the corresponding assignment has been made.
If the alarm function has also been activated for the current output, the applied current will
change to < 3.2 mA or > 20.5 mA / 22 mA. After choosing the Volume flow limit MAX function
and pressing enter, the following selection field will be display
Volume flow limit
MAX = 90%
The current MAX upper-range value for volume flow will be displayed. According to the
description in Section 14.1.3.2 "Input window / modify a value", the current value can be
changed.
15.5.6 QV limit hysteresis
The hysteresis of the QV limiting values is the flow rate in percent based on the upper-range
value and indicates the value which must fall below or surpass the set limiting values in order
to activate or deactivate the function. The hysteresis of the QV limiting values can be set
in 1-percent increments from 0 to 10%. After choosing the QV limit hysteresis function and
pressing enter, the following selection field will be display
QV limit
Hysteresis 00%
The current hysteresis value will be displayed. According to the description in Section 14.1.3.2
"Input window / modify a value", the current value can be changed.
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15.5.7 Density
If a mass unit in kg or t is used as flow unit (2.5.1 Volume flow QV unit), the density of the
medium must be entered in the unit of g/l. Using the entered density value, the mass flow is
calculated from the volume flow measurement.
After choosing the Density function and pressing enter, the following selection field will be
display
Density
998.2 g/l
The current density value will be displayed. According to the description in Section 14.1.3.2
"Input window / modify a value", the current value can be changed.
The value of the density is not measured. It is a parameter.
15.5.8 Volume flow LSL (information field)
This value represents the minimum lower range value based on the inside diameter of the
sensor. This value is normally set for a flow velocity of 0.25 m/s.
QV LSL
XX.XXX l/h
15.5.9 Volume flow USL (information field)
This value represents the maximum upper range value based on the inside diameter of the
sensor. This value is normally set for a flow velocity of 11 m/s.
QV USL
XX.XXX l/h
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15.6 Pulse output functional class
The pulse output functional class is comprised of the functions regarding the pulse output.
Fig. 32
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15.6.1 Pulse or frequency output
The Pulse or frequency output function allows the operator to define whether pulses per
represent a unit of flow or a frequency between 0 and 1 kHz that represents an analog output
over the measuring range.
After selecting the frequency setting, the maximum frequency of 1 kHz will be generated when
the upper-range value for mass or volume flow is reached (depending on the selected pulse
unit). If the flow rate falls below the low flow volume, the actual frequency is 0 Hz.
After selecting the pulse setting, pulse value and unit the transmitter will determine the number
of pulses per flow volume. When choosing a combination of these settings that cannot be
fulfilled in real time for the upper-range value (e.g. the number of pulses per time unit cannot
be generated due to the pulse width which is too large), the error message "Pulse width too
large" or "Inconsistent parameter" will be displayed.
Press 
to display the current setting:
Output of
(Pulses)
According to the description in Section 14.1.3.1 Selection window / make a selection, the
operator can toggle between frequency and pulse output (default setting).
15.6.2 Pulse output unit
This function allows the operator to define the unit to be counted. After selecting the Pulse
output unit function, press  to display the following selection field:
Accumulation of
1.0 l
The current value will be displayed. As mentioned in Section 14.1.3.1 Selection window /
make a selection, the operator can choose between the following units:
Mass units:
kg, t
Volume units:
m³, l, USG, UKG, ft³.
15.6.3 Pulse value
This function allows the operator to define how many pulses will be output per unit counted.
After selecting the Pulse value function, press  to display the current unit:
1 pulse per
(1.0) unit
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
choose between the following pulse values:
Values:
0.001, 0.01, 0.1, 1.0, 10.0, 100.0
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15.6.4 Pulse width
This function allows the operator to change the width of the output pulse to be output. If the
pulse width is too large for the actual pulse number, it will be reduced automatically. In this
case the warning "Pulse output saturated" will be displayed.
After selecting the Pulse width function, press  to display the following selection field:
Pulse width
0050.0 ms
The current pulse width will be displayed. As mentioned in Section 14.1.3.2 "Input window /
modify a value", the operator can change the current value.
The maximum output frequency can be calculated from the following formula:
f=
1
2 * pulse width [ ms ]
≤ 1000Hz
If connecting to electrical counter relays, we recommend pulse widths greater than 4 ms; for
electromechanical counter relays the preset value should be 50 ms.
15.7 Status output functional class
The functional class output is comprised of the functions for setting the status output.
Fig. 33
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15.7.1 Status output active state
The status output can be compared to an electrical relay that can function as make or break
contact. For safety-relevant applications, the operator will choose the break contact setting
so that a power failure or failure of the electronics can be detected like an alarm. In standard
applications, the output is used as make contact.
The Status output state active state function allows the operator to define the behavior of
the status output.
Output active
(closed)
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
choose between the following settings:
-
closed
open.
15.7.2 Status output assignment
This function allows the operator to define to which event the status output is to be assigned.
The most general assignment is the reverse flow assignment.
After selecting the Status output assignment function, press  to display the current
assignment.
Output assigned to
(Reverse flow)
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
choose between the following settings:
-
Flow direction recognition
Forward flow
Reverse flow
Limiting values:
- MIN QV
- MAX QV
- All limiting values and error detection
- Alarm.
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15.8 Current output functional class
The current output functional class allows the operator to perform the settings for the current
outputs of the transmitter.
Fig. 34
The current output is always assigned to volume flow.
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15.8.1 Current output 0/4 - 20 mA
The Current output 0/4 to 20 mA function allows the operator to define the range in which
the current output is to be operated. Within the range from 0 to 21.6 mA (= 0 ... 110%)
HART® communication is not possible. The range from 4 to 20.5 mA follows the NAMUR
recommendation and covers the range from 0 to 104% of the measuring range. The standard
range from 4 to 21.6 mA allows for a control of the measuring range of up to 110%.
Press  to display the current setting.
Current output I1
(4) – 21.6 mA
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
choose between the following settings:
0 – 21.6 mA
4 – 21.6 mA
4 – 20.5 mA
Output current
-
4-21.6 mA only
4-20.5 mA and 4-21.6 mA
Fig. 35
0-20 (21.5) mA
Measured value
15.8.2 Current output alarm
This function allows the operator to define the state taken on by the current output when a
state of alarm is detected. This information can be analyzed in the control system. Press 
to display the current setting:
Alarm
(>22mA)
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
choose between the following settings:
-
not used
no alarm function
> 22 mA current rise in the case of an alarm
< 3.8 mA current reduction in the case of an alarm
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15.9 Simulation functional class
The functional class simulation is comprised of the functions for simulating the outputs. If
simulation is activated, all output signals will be generated based on the selected type of
simulation. The peripherals connected to the device can be tested without a flowing product.
Simulation will be deactivated automatically if the operator switched the device off or did
not touch any control unit keys for about 10 minutes. Simulation can also be activated and
controlled via HART® commands.
Fig. 36
15.9.1 Simulation on / off
The Simulation on/off function allows the operator to activate or deactivate simulation. If
simulation is activated, all output signals will be generated based on the selected type of
simulation. The peripherals connected to the device can be tested without a flowing product.
Press  to display the current status.
Simulation
(off)
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator toggles
between the "on" and "off."
Simulation will be deactivated automatically if the operator switched the device off or did not
touch any control unit keys for about 10 minutes.
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15.9.2 Simulation direct / preset value Q
This function allows the operator to define whether simulation is comprised of the measurement
of the volume flow or whether the outputs will be set directly. Press  to display the selected
type of simulation.
Simulation
[direct]
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
choose between the following settings:
-
Direct
QVabs
pulse and current outputs are programmed directly
a measurement is simulated
If "direct" simulation is activated, any output will perform based on the settings described in
Sections 15.9.5 Status output simulation to 15.9.5.7 Current output simulation. It is therefore
recommended that the settings be defined before starting simulation. They can then be
purposefully changed during simulation.
Simulation will be deactivated automatically if the operator switched the device
off or did not touch any control unit keys for about 10 minutes.
15.9.3 Simulation measured flow Q
If the operator selected the setting "QVabs" described in Section 15.9.2, the following settings
of a volume flow will affect the output behavior during measured value simulation.
In order to simulate volume flow, the operator can define a "measured value." The flow rates
will be simulated in both directions. All outputs will perform based on the simulated measured
value.
Preset QVabs
±0900.0 l/h
The simulation value is entered as described in Section 14.1.3.2 "Input window / modify a
value".
15.9.4 Direct simulation of outputs
If the operator selected the setting "Direct simulation" described in Section 15.9.2 „Simulation
direct ", the following 3 possible settings will affect the output. All outputs are simulated at
the same time by these settings.
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15.9.5 Status output simulation
The Status output simulation function allows the operator to purposefully activate the status
output.
Press  to display the current state.
Status output
(off)
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
toggle between "on" and "off".
15.9.6 Pulse output simulation
The Pulse output simulation function allows the operator to define a frequency to be assigned
to the pulse output. After selecting this function and pressing enter, the following selection
field will be display
Set frequency
0210.0 Hz
This field shows the current frequency. As mentioned in Section 14.1.3.2 "Input window /
modify a value", the definable frequency ranges from 6 Hz to 1100 Hz.
15.9.7 Current output simulation
This function allows the operator to define a current for current interface 1. Press  to display
the set current.
Set I1
I1 = 10.50 mA
As mentioned in Section 14.1.3.2 "Input window / modify a value", the current value can be
changed.
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15.10 Self-test functional class
The self-test function class is comprised of the functions relating to the self-test of the sensor.
The diagnostic functions of the transmitter, which monitor the proper functioning of the
electronics and the software, are always active and cannot be switched off. The excitation
current can be monitored in addition.
Fig. 37
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65
15.10.1 Self-test test on / off
The Self-test on/off function allows the operator to activate or deactivate the monitoring
function of the field coil current.
Self-test
(off)
According to the description in Section 14.1.3.1 Selection window / make a selection, the
operator can toggle between "on" and "off." The standard factory setting is "on."
The measurement is intended to suppress temperature dependences of the transmitter.
During the sampling time of 0.5 seconds, the transmitter is offline; the last measured value
will be displayed at the signal outputs.
Self-test period (STP)
With the help of this function, you set the time period after which the field coil current will be
measured periodically. You can set periods between 35 seconds and 999 seconds.
Self-test
STP = 040 s
This field shows the current self-test period. As mentioned in Section 14.1.3.2 "Input window
/ modify a value", the current value can be changed.
15.10.2 Reference calibration on / off
With the help of the function Reference calibration on/off, the periodic recalibration of the
transmitter can be activated or deactivated. The objectives of the function are periodic selfmonitoring and an increase in long-term stability. During the automatic reference calibration
of 30 seconds, the transmitter is offline; the last measured value will be displayed at the
signal outputs. After choosing this function and pressing enter, the following selection field
will be display
Reference calibration
(off)
According to the description in Section 14.1.3.1 Selection window / make a selection, the
operator can toggle between "on" and "off." If switched on, the reference calibration will be
done periodically.
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15.10.3 Reference calibration period (GAP)
The function Reference calibration period is a multiplication of the function "self-test period"
.With the help of this function, you define after how many STP’s the reference calibration is
to be performed.
Reference calibration
GAP = 540 * STP
This field shows the current reference calibration period. As mentioned in Section 14.1.3.2
"Input window / modify a value", the current value can be changed.
Example:The "self-test period" has been set to 40 seconds; a reference calibration is to be
carried out every 6 hours.
GAP = 6 * 3600s / 40s = 540
15.10.4 Empty pipe detection on / off
With the help of the function Empty pipe detection on / off, continuous empty-pipe detection
can be activated or deactivated. After selecting this function and pressing enter, the following
selection field will be display
Empty pipe detection
(off)
According to the description in Section 14.1.3.1 Selection window / make a selection, the
operator can toggle between "on" and "off." If switched on, the empty pipe detection will be
done periodically.
15.10.5 Empty pipe detection period
With the help of the function Empty pipe detection period, the time after which the detection
will be carried out can be set. When entered 00 minutes, the detection will be performed
continuously.
After choosing this function and pressing enter, the following selection field will be display
Leerrohrprüfung
alle 10 Min
This field shows the current empty pipe detection period. As mentioned in Section 14.1.3.2
"Input window / modify a value", the current value can be changed.
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15.11 Settings sensor + UMF2 (B) functional class
This functional class is comprised of the general settings affecting the behavior of the
transmitter.
SETTINGS SENSOR + UMF2
functional class
SETTINGS
SETTINGS
SENSOR
+ UMF2
SENSOR + UMF2
Sensor constant C
Sensor constant C
Sensor type
Sensor type
Sensor constant /mV
03321.9 l/h
Sensor type
[PITY]
_______________
EPY
EPYE
EPS
PIT-520
PIT-571
PIT-573
PIK
PITY
other
Version of UMF2
Version
of UMF2
software
software
Serial number
Serial number
Inside diameter
Inside diameter
Language
Language
Excitation
Excitation
frequency
frequency
Mains frequency
Mains frequency
Flow direction
[forward & reverse]
_________________
forward & reverse
forward
reverse
Flow
Flow
direction
direction
Version of UMF
001.06
Serial number
123456
Inside diameter
0125.5 mm
LAnguage
[English]
_________________
German
English
Excitation frequency
[6.25] Hz
_________________
1.56
3.125
6.25
12.5
25
Show system
Show
errorssystem
errors
Reset system
Reset
errorsystem
error
System error
0000000
Reset
[no]
_________________
yes
no
Mains frequency
[50] Hz
_________________
50
60
Fig. 38
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15.11.1 Sensor constant C
The sensor constant C is the calibration value of the sensor connected to the transmitter. The
calibration value must be entered in the ELM transmitter to ensure a correct measurement.
The constant will be defined after the calibration of the meters and can be found on the rating
plate of the sensor.
After selecting the Sensor constant function, press  to display the current setting.
Sensor constant /mV
01234.56 l/h
As mentioned in Section 14.1.3.2 "Input window / modify a value", the current value can be
changed.
CAUTION:
Changing sensor constant C to a value that differs from the value on the rating
plate of the sensor connected to the flowmeter will result in false readings!
Note:
The sensor constant must always be preceded by a plus or minus sign. The
delivery default setting is a plus sign. If inlet and outlet section are interchanged
when the device is installed (the flow direction is indicated by an arrow on the
sensor), the transmitter will display a "forward flow" negative measurement value. If the (plus
or minus) sign of the sensor constant is then changed without changing the actual value, a
plus sign will again be displayed. No changes need be made in the disposition of the electrical
connections (wires).
15.11.2 Sensor type
The function Sensor type contains the type of the sensor with which the transmitter has been
delivered. The distinction is necessary and required because the flow rate measurement uses
different calculations depending on the type of the used sensor. After selecting this function,
press  to display the current setting.
Sensor type
(PITY)
This type code can be found on the sensor rating plate. This setting is defined by the vendor
when the device is first put into operation at the factory. It should only be changed if the
transmitter is mounted onto another sensor.
15.11.3 Inside diameter
The inside diameter of the sensor connected to the transmitter is necessary for calculating
the mean flow velocity. The inside diameter must be checked in the ELM (on mm exact) to
ensure a correct measurement. After choosing the function "inside diameter" and pressing
enter, the following selection field will be displa
Inside diameter
50 mm
As mentioned in Section 14.1.3.2 "Input window / modify a value", the current value can be
changed.
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15.11.4 Language
Two languages are available in the ELM: German and English..
Language
(English)
As mentioned in Section 14.1.3.1 Selection window / make a selection, the operator can
toggle between these languages:
-
German
English.
15.11.5 Excitation frequency
With the help of the function Excitation frequency, you can set the excitation frequency of the
field coil current. Since the excitation frequency depends on the sensor, it cannot be assigned
freely. The excitation frequency defaults to 6.25 Hz.
Excitation frequency
(6.25 Hz)
The selection is confirmed and taken over with the  key.
Caution!
If the excitation frequency is changed, then a reference calibration
(Section 15.10.2 Reference calibration on / off ) must be accomplished!
Otherwise the measuring accuracy is not ensured.
15.11.6 Mains frequency
In order to ensure with mains frequency (50 Hz or 60 Hz per second) optimal interference
suppression, the input of the frequency is necessary. The standard setting is 50 Hz
After choosing the function Mains frequency and pressing enter, the following selection field
will be display
Mains frequency
(50 Hz)
The selection is confirmed and taken over with the  key.
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15.11.7 Flow direction
This function allows the operator to define the flow direction that the transmitter will evaluate.
Only "forward" should be selected so as to prevent reverse flow from being measured. The
standard factory setting is "forward & reverse." After selecting the Flow direction function,
press  to display the current setting.
Flow direction
(forward)
As mentioned in Section 14.1.3.1 Selection window / make a selection the operator can
choose between:
forward
reverse
forward & reverse
Output (current, pulse)
-
Reverse flow
Forward flow
Fig. 39
Measured value
15.11.8 Software version (information field)
After selecting this function, the version of the transmitter software will be shown
(example: 1.06):
Version of ELM
001.06
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15.11.9 Serial number (information field)
With the help of the Serial number function, the transmitter is assigned to an order. This
number provides access to internal vendor data if the device needs servicing. The serial
number is printed on the rating plate of the transmitter. After selecting this function, press 
to display the following information field:
Serial number:
100683
This entry should never be changed so as to ensure that the sensor, the transmitter and the
documents created within quality management are assigned correctly.
15.11.10 Show system errors
With the help of this function, you can show the error code of the system errors that have
occurred.
The integrated diagnostic system of the ELM distinguishes between two types of errors
(see also Section 15.11.12 "ELM error messages"). Self-test errors such as problems with a
sensor line or inconsistent parameter inputs are displayed as textual error messages. Once
the error has been eliminated, the message automatically disappears from the display. For
further information, see Section 16.1.1 "Display of self-test errors".
Errors that are attributable to system memory or software, division by zero, or a fault in
the electronics unit are designated as system errors. These error messages are not reset
automatically after the error (usually of very brief duration) is eliminated.
15.11.11 Reset system error
Before resetting a system error manually, we advise that you contact our technical service
department. For further information, see Section 16.1.2 "Display of system error".
Reset error
(no)
If the operator toggles to [yes] and confirms the action according to the description in Section
14.1.3.1 Selection window / make a selection , the error messages disappears from the
display. If the message reappears shortly after, do contact our technical service department.
15.11.12 ELM error messages
The integrated diagnostic system of the ELM distinguishes between two types of errors. Selftest errors such as problems with a sensor line or inconsistent parameter inputs are displayed
as textual error messages. Once the error has been eliminated, the message automatically
disappears from the display. For further information, see Section 16.1.1 "Display of self-test
errors".
Errors that are attributable to system memory or software, division by zero, or a fault in
the electronics unit are designated as system errors. These error messages are not reset
automatically after the error (usually of very brief duration) is eliminated. Before resetting
a system error manually, we advise that you contact our technical service department. For
further information, see Section 16.1.2 "Display of system error".
If the cause of any of the error messages described below cannot be eliminated, contact the
device vendor.
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16. Standard operating mode
The transmitter operates as described above. After the cause of the error message has been
eliminated, the message automatically disappears.
16.1 List of error messages
16.1.1 Display of self-test errors
Self-test errors are displayed as plain text in the set language (German or English) on the
second line of the LCD.
Display
(German)
Display
(English)
Description
Possible cause of
error and remedy
Rohr leer
empty pipe
Empty-pipe detection
has been activated.
Fluid density is below
the limit value for
density; empty-pipe
detection, pipe is
empty.
Product contains
air bubbles/pipe
is empty. Bubblefree filling must be
ensured.
Spulenstrom
Exciter
current?
Interruption / short
circuit in the connection
of excitation coil. All
signal outputs will be
set to no flow.
Check the wiring
between transmitter
and sensor.
Messkreis überst.
meas. circ. sat.
The flow measurement
circuit is overloaded.
The measured
electrode voltage is too
high. All signal outputs
will be set to no flow.
Flow rate exceeds
the upper range value
(URL).
High electrostatic
voltage at the
electrodes.
Strom überst.
curr. saturated
The output of current
interface is overloaded.
Based on the selected
settings and the
currently assigned
measured variable, the
current to be output is >
21.6 mA.
Check the upperrange value and the
flow rate settings.
IMP übersteuert
pulse out satur.
The pulse output
is overloaded. The
current measured value
requires a pulse rate,
which can no longer
be generated with the
help of the set pulse
duration and pulse
value.
Check pulse duration,
pulse value, and
measuring range.
Check the flow rate.
Table continued overleaf
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16.1.1 Display of self-test errors (continued)
Display
(German)
Display
(English)
Description
Possible cause of
error and remedy
Parameter inkons.
params
inconsist
Parameter is
inconsistent.
Check the parameter
settings.
The set parameters
are contradictory.
Check the parameter
settings.
The set parameters
are contradictory.
Example: Upperrange value, pulse
value and pulse
duration must be
matched in such
a way that the
combination fits for
all measured values.
ext EEPROM fehlt
missing
EEPROM
The data memory
module (DSM)
with the calibration
data of the sensor
and the customerspecific settings of
the transmitter is not
plugged-in.
Insert the data
storage module
(DSM) in the socket
on the power supply
board UMF2-20.
Information:
Error message: "Parameter is inconsistent" (system error 0x0400)?
To generate a list of the inconsistencies, first enter a valid password and then
an invalid password. The control unit will show a list of current errors (only
once). The operator can then correct the inconsistent settings after entering a
valid password.
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16.1.2 Display of system error
System errors consist of the message text "system error" and a 5-digit number in hexadecimal
code. The meaning of the individual error codes is described in the following table. If several
errors occur at the same time, the hexadecimal sum of the individual errors will be displayed.
The errors are coded in such a way that the individual errors can be easily identified. The
sums are unique.
Descriptor label
(never displayed)
Constant/
display
Description
SystemfehlerExtEEProm
0x00002
External EEPROM (data memory chip DSM)
plugged in but empty, not initialized
SystemfehlerIntEEProm
0x00004
Internal EEPROM (calibration UMF2 (B)
transmitter) erased, UMF2 uncalibrated
SystemfehlerEEPROM
0x00010
Unsuccessful saving or reading of memory
data / defective memory
16.1.3 Reset system error
After the fault recovery the displayed system error message can be reset.
For this purpose the customer password has to be entered. (Refer to 15.2.1 Customerpassword).
Select the function Show system error. (Refer to 15.11.10 Show system error).
Analyse the fault and repair the transmitter or sensor.
Finally reset the system error message. (Refer to 15.11.11 Reset system error)
17. Standards & Directives
General standards and directives
EN 60529 Degrees of protection provided by enclosures (IP code)
EN 61010-1:2010 Safety requirements for electrical equipment for measurement, control, and laboratory use.
NAMUR guideline NE21, Version 2012-05-09
Directive 97/23/EC (Pressure Equipment Directive)
AD-2000 Guidelines
Electromagnetic compatibility
EMC Directive 2004/108/EC
EN 61000-6-2:2005 (immunity for industrial environments)
EN 61000-6-3:2007 +A1:2011 (emission standard for residential, commercial and light-industrial environments)
EN 55011:2009 +A1:2010
group 1, class B (emitted interference)
DIN EN 61326-1:2013
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18. Maintenance
The device requires no maintenance if used according to its intended purpose. Cleaning might
be necessary due to deposits and dirt on the electrodes or the flow tube.
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19. Decontamination certificate for
device cleaning
Company name: ...............................
Address: ...............................................
Department: ....................................
Name of contact person: ....................
Phone: .................................
Information pertaining to the enclosed flowmeter
Model ELM- ................
was operated using the following fluid: ........................................
In as much as this fluid is water-hazardous / toxic / corrosive / combustible
we have done the following:
Checked all cavities in the device to ensure that they are free of fluid residues*
Washed and neutralized all cavities in the device*
*cross out all non-applicable items
We hereby warrant that no health or environmental hazard will arise from any fluid
residues on or in the enclosed device.
Date: .............................
Signature: ...........................
Stamp
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