KROHNE IFM4042K User Manual

Installation and
operating instructions

ALTOFLUX 2W
IFM 4042 K

Electromagnetic flowmeters

Variable area flowmeters

Vortex flowmeters

Flow controllers

Electromagnetic flowmeters

Ultrasonic flowmeters

Mass flowmeters

Level measuring instruments

Communications engineering

Engineering systems & solutions

Applicable to
Software Versions

● Display/Control unit

No. 3.19019.xx00

● ADC module

No. 3.19749.xx00

● I/O module

No. 3.18748.xx00

DIN A4: 7.10004.31.00

©

KROHNE 02/2001 US size: 7.10004.71.00

GR/OP

How to use these Instructions

The flowmeters are supplied ready for operation.

– Installation in the pipeline (Section 1) Pages 5-10
– Electrical connection (Section 2) Pages 11-13
– Start-up (Section 3) Page 17

Power the flowmeter. THAT’S ALL. The system is operative.

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Here you can note down the settings of the signal converter !

Fct. No. Function Settings

1.01 Full-scale range

1.02 Time constant

1.03 Low-flow cutoff - ON: - OFF:

1.04 Display

1.05 Current output

Flow
Counter
Messages
Function
Range
Error

1.06. Pulse output

Function
Pulse width
Pulses / Volume

1.07 Status output

3.01 Language

3.02 Primary head Meter size

GKL value
Flow direction

3.4 Application Empty pipe
Field current
Mode field current
Limit
Filter

3.5 Hardware Function of terminal B:

3.6 HART

off HART
Current 4 mA trim.:
Current 20 mA trim.:
Address
I-Multidrop:

2

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02/2001

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•

•

•

•

•

Your operatig data 2
System description 4
Product liability and warranty 4
CE / EMC / Standards / Approvals 4
Software history 4

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1 Installation 5 - 10

1.1 Items included with supply 5

1.2 Handling 5

1.3 Installation location 6

1.4 Suggestions for installation 7
1,5 Installation in the pipeline 8

1.6 Torques 9

1.7 Grounding 10

2 Electrical connection 11 – 16

2.1 Information on electrical connection and connection data 11

2.2 Output circuit diagrams 12 – 13

2.3 Characteristic of the outputs 14 – 16

3 Start-up 17

3.1 Power ON and measurement 17

3.2 Factory settings 17

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4 Operation of the signal converter 18 - 33

4.1 KROHNE operator control concept 18

4.2 Operating and check elements 19

4.3 Function of keys 20 – 21

4.4 Table of settable function 22 – 32

4.5 Error messages in measuring mode 33

4.6 Reset counter and cancel error messages 33

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5 Technical Data 34 - 40

5.1 Full-scale ranges 34

5.2 Error limits at reference conditions 35

5.3 IFC 040 Signal converter 36 – 37

5.4 IFS 4002 Primary head 38

5.5 Dimensions and weights 39

5.6 Limits 40

6 Block diagram of signal converter 41
7 Measuring principle 42
8 If you need to return flowmeters for testing or repair to KROHNE 43

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ystem description

Electromagnetic 2-wire flowmeters with IFC 040 signal converter are precision instruments
designed for linear flow measurement of liquid products.

The process liquids need to be electrically conductive, ≥ 5 µS/cm
(for cold demineralized water ≥ 20 µS/cm).

Depending on the meter size, the full-scale range Q

100%

can be set between 85 Liter/h and 763 m3/h, equivalent to a flow velocity v = 0,3- 12 m/s,
see flow table in Section 5.1.

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Electromagnetic 2-wire flowmeters with IFC 040 signal converter are designed solely for
measuring the volumetric flowrate of electrically conductive, liquid process products.

These flowmeters are also available for use in hazardous areas. Special codes and regulations
apply in this connection and these are referred to in the special ‘EEx’ notes.

Responsibility for suitability and intended use of these electromagnetic flowmeters rests solely
with the operator.

Improper installation and operation of the flowmeters (systems) may lead to loss of warranty.
In addition, the “General conditions of sale” forming the basis of the purchase contract are

applicable.
If flowmeters need to be returned to KROHNE, please note the information given on the last-but-

one page of these Instructions. KROHNE regret that they cannot repair or check your
flowmeter(s) unless accompanied by the completed form sheet.

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Electromagnetic flowmeters with IFC 040 signal converter
meet the protection requirements of Directive 89/336/EEC in conjunction with

EN 50081-1 (1992) and EN 50082-2 (1995), and Directives 73/23/EEC and
93/68/EEC in conjunction with EN 61010-1, and also bear the CE symbol..

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Display and control unit PC user software Hart® module
IFC 040 IFC 040

Software Status Software Status Software Status

3.19019.xx00 current 3.19136.xx00 current 3.18748.xx00 current

ADC module I/O module

Software Status Software Status

3.19749.xx00 current 3.18748.xx00 current

4

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02/2001

Part A Installation and Start-up Section 1.1 + 1.2

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1.1 Items included with supply

Flowmeter in the size as ordered

•

Connecting wires for grounding, refer to Section 1.7 Grounding

•

Certificate of calibration data

•

Grounding rings (option), if ordered

•

Installation and operating instructions for the signal converter

•

Fitting accessories (stud bolts, screws, gaskets, etc.)

1.2 Handling

to be provided by customer!

are not supplied,

Do not lift flowmeter by the signal converter
housing or the terminal box.

Do not set flowmeter down on the signal
converter housing.

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5

Section 1.3 Part A Installation and Start-up

1.3 Installation location

• Temperatures

Refer to Section 5.6 “Limits“ for operating pressure and vacuum load based on flange
standards and type of tube liner.

Standard -25 to +60 °C -13 to +140 °F

EEx -25 to +60 °C -13 to +140 °F

Storage and handling -25 to +60 °C -13 to +140 °F

• Location and position as required,

but in a horizontal pipe run
electrode axis

Ambient temperature

-25 to +40 °C -13 to +104 °F

-25 to +40 °C -13 to +104 °F

Process temperature

-25 to ≤ + 60 °C -13 to ≤ +140 °F

-25 to ≤ +140 °C -25 to ≤ +284 °F

-25 to ≤ + 60 °C -13 to ≤ +140 °F

-25 to ≤ +140 °C -25 to ≤ +284 °F

X – • – • – • – X

should be approximately horizontal.

Y Signal converter housing

• Measuring tube must be completely filled at all times.

• Direction of flow is arbitrary: arrow on flowmeter can normally be ignored.

For exceptions, refer to Sect. 3.2 “Factory settings” in the Installation and Operating
Instructions for the signal converter.

• Stud bolts and nuts: to install, make sure there is sufficient room next to the pipe flanges.

• Vibration: support pipeline on both sides of flowmeter. Level of vibration in conformity with

IEC 068-2-34: below 2.2g for flowmeters in the 20-150 Hz frequency range.

• Do not expose to direct sunlight: fit a sunshade if necessary, not included with flowmeter,
to be provided by customer.

• Avoid strong electromagnetic fields in vicinity of flowmeter.

• Inlet run 5 × DN and outlet run 2 × DN, straight pipeline,

measured from electrode axis (DN = meter size)

• Vortex and corkscrew flow: increase length of inlet and outlet runs or
install flow conditioners.

• Mixing different process liquids: install flowmeter upstream of the mixing point or at an
adequate distance downstream (min. 30 × DN), otherwise display may be unsteady.

• Plastic pipelines and internally coated metal pipelines: grounding rings required,
refer to Sect. 1.7 “Grounding“.

• Insulated pipeline: do not insulate flowmeter.

• Zero setting: not necessary. To check, it should be possible to set “zero“ flow velocity

when the measuring tube is completely filled. Shutoff valves should therefore be provided,
either downstream of the flowmeter or upstream and downstream of the flowmeter.

• Electrical connection to VDE 0100 “Regulations governing heavy-current installations
with line voltages up to 1000 V” or equivalent national regulations.

• Hazardous areas: subject to special regulations,
refer to special ‘EEx’ information (texts with grey background).

6

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02/2001

Part A Installation and Start-up Section 1.4

1.4 Suggestions for installation

To avoid measuring errors due to gas/air inclusion or to pipe running empty,
please observe the following:

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7

Section 1.5 Part A Installation and Start-up

1.5 Installation in the pipeline

• Installation material not included, to be provided by customer
(stud bolts, nuts, gaskets, etc.).

• Pipe flanges and operating pressure: refer to “limits“ tables in Section 5.6

• Distance between pipe flanges:
see fitting dimension a in Section 5.5 “Dimensions and weights“

• High-temperature service
Where process temperatures exceed 100°C/212°F, provide facilities to compensate for
longitudinal expansion on heat-up of the pipeline.
For short pipelines, use resilient gaskets, and
for long pipelines install flexible pipe elements (e.g. elbows).

• Flange position: Install flowmeter in line with pipe axis.
Pipe flange faces must be parallel to each other.

• Gaskets
No additional gaskets required for primary heads fitted with tube liners of Teflon® - PFA or
Teflon® - PTFE. Refer to Sect. 1.6 for torques.

• Grounding rings / protection rings (option)
On plastic pipelines and internally coated metal pipelines, grounding rings are required to
form the conductive connection with the process liquid. Refer to Sect. 7 “Grounding“ for

electrical connection.

Please note: The cylindrical neck must be inside the measuring tube

(to protect the liner, particularly at the inlet edge).

8

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Part A Installation and Start-up Section 1.6

1.6 Torques

• Stud bolts:

See table for number and type.

• 10 Nm ~ 1.0 kpm ~ 7.23 ft × lbf

Meter
size

DN mm
10

15
25
50
80
100
150

tighten uniformly in diagonally opposite sequence.

Pressure

rating

PN

40
40
40
40
25
16
16

Bolts

Max.

torques

Nm

4 × M 12 7.6 5.5
4 × M 12 9.3 6.7
4 × M 12 22
4 × M 16 55
8 × M 16 47
8 × M 16 39
8 × M 20 68

ft × lbf

11
31
25
30
47

Meter
size

inches

3

/

1

/
1
2
3
4
6

Flange

class

Ib

150

8
2

150
150
150
150
150
150

Bolts

for

ANSI

class 150

flanges

4 × 1/2" 3.5
4 × 1/2" 3.5
4 × 1/2" 6.7

4 × 5/8” 24
4 × 5/8” 43
4 × 5/8” 34

8 × 3/4" 61

Nm

Max.

torques

ft × lbf

2.5

2.5

4.8

17.4

31.1

24.6

44.1

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9

Section 1.7 Part A Installation and Start-up

1.7 Grounding

• All flowmeters must be properly grounded to avoid personnel shock hazard.

• The ground conductor should not transmit any interference voltages, therefore do not
ground any other electrical devices together with this conductor.

Repeater power supply unit

• Protective separation (PELV) must be ensured
(VDE 0100 / VDE 0106 or IEC 364 / IEC 536, or equivalent national regulations).

• For measurement reasons, connect an FE functional ground conductor.

Metal pipelines, not internally coated

Metal pipelines,

with or without internal coating,

and plastic pipelines

grounding without grounding rings

grounding with grounding rings

D1, D2, D3 Gaskets, not included with supply, to be provided by customer.
E Grounding rings (option)
F Flowmeter flanges
FE Functional ground, wire ≥ 4 mm2 Cu (10 AWG), not included with supply,

to be provided by customer.

R Pipeline
RF Pipe flanges
V1, V2 Interconnecting wires, included with supply
Y Terminal box or signal converter

10

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02/2001

Part A Installation and Start-up Section 2.1

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2.1 Information on electrical connection and connection data

• Rated values: The flowmeter housings protect the electronic equipment from dust and

moisture and should always be kept properly closed. Creepage distances and clearances in air
have been dimensioned in conformity with VDE 0110 and IEC 664 for contamination category

2. Supply circuits and output circuits are designed to meet the standards of overvoltage classes
III and II, respectively.

• Safety isolation: The flowmeter must be provided with an isolating facility.

• Note information on instrument nameplate(s).

• PE conductor / FE functional ground must be connected to the separate U-clamp

terminal in the terminal compartment of the signal converter.

• For measurement reasons, the flowmeter must be properly grounded. The ground conductor

should not transmit any interference voltages. Therefore, do not ground any other electrical
devices together with this conductor.

• In hazardous areas, the ground conductor is used simultaneously for equipotential bonding.

CAUTION: Where a power booster (1L= / 0L=) is used, electrical isolation is required

between the power booster and the current output, otherwise the electronic equipment will
substain irreparable damage.

Standard power terminals

EEx power terminals

FE
PE

Current output

Ι

(not polarity sensitive)

Ι ⊥

B 2

Pulse or status output

NAMUR

B ⊥
B 1

Pulse or status output

high current

B ⊥

Functional ground
Safety conductor / equipotential bonding

V

= 36 V Ι

max

V

= 24 V Ι

nom

= 14 V Ι

V

min

NAMUR terminals (B2 + B ⊥)

= 0.4 mA Ι

Ι

open

High-current terminals (B1 + B ⊥)

closed: V
open: V

Common ground (negative) Take note of polarity!

B ⊥
1L=

Power booster

0L=

(not polarity sensitive)

Ι +

2nd power terminal
V

= 36 V V

max

V

= 24 V Ι

nom

not used, no internal connection

10 for internal use only

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ALTOFLUX 2W

= 22.4 mA (fault current)

max

= 4 - 20 mA

nom

= 3.6 mA (fault current)

min

closed

max
max

V

nom

min

nom

= 6 mA

= 2 V Ι
= 36 V Ι
= 24 V Ι

= 14 V
= 22 mA

max
max
nom

= 100 mA
= 2 mA
= 1,5 mA

11

Section 2.2 Part A Installation and Start-up

2.2 Output circuit diagrams

Supply power and current output - standard

Note data given in Sect. 2.1!

Supply power and current output - operation via repeater power supply unit

Repeater power supply unit

Repeater power supply unit, e.g.:

CEAG 6 / 420 or
Phoenix Contact PI/Ex-ME-RPSS-I/I Note data given in Sect. 2.1!

12

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02/2001

Part A Installation and Start-up Section 2.2

Pulse or status output

current limited

to 100 mA

Note data given in Sect. 2.1!

Pulse or status output - operation via repeater power supply unit

Repeater power supply unit

Repeater power supply unit e.g.:

Phoenix PI/Ex-ME-2NAM/COC Note data given in Sect. 2.1!

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13

Section 2.3 Part A Installation and Start-up

2.3 Characteristic of the outputs

Fig. 1 Low-flow cutoff SMU (see Fct. 1.3 in Section 4.4)

I,P,S,..

-2.Number

-1.Number

L. F. Cutoff

Q

1.Number

2.Number

Fig. 2 Current output (see Fct. 1.5 in Section 4.4)

positive
direction

-Q

100%

negative
direction

I

100%

I,P

I,P

absolute

I

100%

I

0%

0

Q

Q

100%

-Q

100%

I,P

I

100%

I

0%

0

Q

negative-zero-positive

I

I

0%

100%

Q

0

Q

100%

I

I

0%

0

Q

Q

100%

14

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02/2001

Part A Installation and Start-up Section 2.3

Fig. 3 Pulse output

positive
direction

negative
direction

-Q

100%

(see Fct. 1.6 in Section 4.4)

I,P

I

100%

I

0%

0

I,P

I

100%

I

0%

0

Q

Q

100%

Q

-Q

100%

absolute

I

100%

I

I,P

0%

0

Q

Q

100%

Fig. 4 Status output: Automatic range change BA

I

I

100%

I

0%

-Q

100%

02/2001

-Limit

Limit

S

closed

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Q

Q

100%

Qopen

(see Fct. 1.7 in Section 4.4)

15

Section 2.3 Part A Installation and Start-up

Fig. 5 Status output: Limit switches

(see Fct. 1.7 in Section 4.4)

S

closed

open

-off limit

-on limit

off limit

on limit

Q

-on limit

Fig. 6 Noise / Change of flow (see Fct. 3.4 in Section 4.4)

Noise without Noise Filter

Flow Change

Noise Level

-off limit

S

closed

open

on limit

off limit

Q

Noise

-Noise Flow
0

Noise

Noise Flow

Fig. 7 Pulse duration (see Fct. 3.4 in Section 4.4)

Q

Pulse Width

16

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Q

t

02/2001

Part A Installation and Start-up Section 3.1+ 3.2

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3.1 Power ON and measurement

• Before powering the system, please check that it has been correctly installed according to
Sections 1 and 2.

• The flowmeter is delivered ready for operational use. All operating data have been factory-
set in accordance with your specifications.

Please also refer to Section 3.2 “Factory settings”.

• Power the unit, and the flowmeter will immediately start process flow measurements.

• When powered, the display shows in succession: START UP and READY. This is followed by

indication of the current flow rate and/or the current counter count, on either a continuous or
alternating basis, depending on the setting under Fct. 1.04.

• For operator control, refer to Section 4.

3.2 Factory settings

All operating data are factory set according to your order specifications.
If you have not made any particular specifications at the time of ordering, the devices are

delivered with the standard parameters and functions listed in the table below.
To facilitate easy and rapid start-up, the current output is set to process flow measurement in

“absolute“, so that the current flow rate is displayed independent of the direction of flow. On the
display, measured values may possibly be shown with a “ - ” sign.

This factory setting for the current output may possibly cause measuring errors:
For example, when pumps are switched off and a “backflow“ occurs that is not within the range

of the low-flow cutoff SMU, or when separate displays and counts are required for both flow
directions.

To avoid faulty measurements, therefore, it may be necessary to change the factory setting of
some or all of the following functions. For operator control see Section 4.4:

• Low-flow cutoff SMU, Fct. 1.03

• Display, Fct. 1.04

• Current output, Fct. 1.05

• Pulse output, Fct. 1.06

Standard factory settings

Function Setting Function Setting

1.01 Full scale range Q

1.02 Time constant 3,0 s

1.03 Low-flow cutoff OFF: 0,4 % 3.01 Language English

1.04 Display Meter size see nameplate

Flow rate Percent Flow direction
Counter m3 (see arrow on primary head) Pos. flow

1.05 Current output 3.04 Application

Function Absolute Empty pipe yes

Range 4 - 20 mA Field current 100-50-25 mA
Error message 22 mA Mode field current two times

1.06 Pulse output Limit 150 %

Function off Filter off
Pulse per volume 1 Pulse / m3
Pulse width 50 ms 3.06 HART no

02/2001

100%

see nameplate 1.07 Status output off

ON: 0,5 % 3.02 Primary head

3.05 Hardware Pulse output

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17

Section 4.1 Part B IFC 040 Signal converter

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4.1 KROHNE operator control concept

136.49 Measuring mode
m3/h

→

↵

Menu column Function column Data column

4.2 COUNTER RESET

4.0 RESET 4.1 ERROR RESET

3.6 HART

3.5 HA RDWARE

3.4 APPLICATION

3.3 ZERO SET

3.2 FLOW METER

Direction of
movement

3.0 INSTALLATION 3.1 LANGUAGE

2.2 HARDWARE INFO

2.0 TEST 2.1 TEST Q

1.7 STATUS OUTPUT

1.6 PULSE OUTPUT

CURRENT OUTPUT

1.5

1.4 DISPLAY

1.3 L.F.CUTOFF

1.2 TIME CONSTANT

1.0 OPERATION 1.1 FULL SCALE

↑

→

↑

↵ ↵

→

see

Section

4.4

18

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02/2001

Part B IFC 040 Signal converter Section 4.2

4.2 Operating and check elements
Control by way of ...

5

...

the 3 keys



, after twisting off the cover of
the electronics compartment using the
special wrench (supplied).

...

the 3 magnetic sensors

 and the bar

magnet (supplied) without opening the

housing.

Flow

rate

IFC 090 D

IFC 040

16

2

3

+

Totalizer

m3/h

-

4

I

Overange

P

PLEASE NOTE !

Do not damage the screw thread and gasket of the cover, never allow dirt to accumulate, and
make sure they are well greased at all times.
Replace any damaged gasket immediately!











Display 1st line

Display 2nd line 4-character light writing

Display 3rd line Arrows to identify display

Flowrate
Counter

Overrange

+

-

Σ
Ι

P

Current flow rate
Positive counter
Negative counter
Sum counter (+ and -)
Overranging, current output
Overranging, pulse output

Keys for operator control of signal converter

Magnetic sensors to set the converter by means of a handheld bar magnet without
opening the housing.
Function of sensors same as keys



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19

Section 4.3 Part B IFC 040 Signal converter

4.3 Function of keys
The cursor, flashing part of display or horizontal scrolling, has a grey background.

To start operator control

Measuring mode Operator control mode

13.57 1 FCt. 1. 0
m3 / h O P E R A T I O N

To select function

Increase number = select next function

FCt. 1.4 FCt. 1.5

D I S P L A Y C U R R E N T O U T P U T

To transfer to subfunction

→

↑

FCt. 1.5 info

C U R R E N T O U T P U T F U N C T I O N

To transfer to setting of subfunction

info Edit

F U N C T I O N P o S . d i r e c t i o n

To alter texts

When (e.g. flow) units are changed, the numerical value is converted automatically.

Edi t Edi t

P o S . d i r e c t i o n N e G . d i r e c t i o n

To transfer to next subfunction

Edi t i nfo

N e G . d i r e c t i o n 0 P e R . C u R R e n t

To transfer to setting of subfunction

→

↵

↑

↵

info 0 4. 0

0 P e R . C u R R e n t mA

20

↵

ALTOFLUX 2W

02/2001

Part B IFC 040 Signal converter Section 4.3

To move cursor

To change a number

To terminate operator control

Press key

1.0 OPERATION, 2.0 TEST

is displayed.

(flashing position)

each keystroke moves 1 place to the right

0 4. 0 0 4. 0

0 4. 005. 0

repeatedly until one of the functions

↵

or

FCt. 3. 0End

I N S T A L L A T I O N Y E S

Store new parameters

→

mA mA

↑

mA mA

3.0 INSTALLATION

↵

Press key ↵ to confirm “
continued with the new parameters.

”, measuring mode

YES

Do not store new parameters

02/2001

Press key ↵ to confirm “NO”, return to Fct.

1.0 OPERATION

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21

Section 4.4 Part B IFC 040 Signal converter

4.4 Table of settable functions

Display texts
FCt. 1.1

FULL SCALE

XXX.XXX

↑ "user unit"

Range:

0.3-12 m/s = 1-40 ft/

FCt. 1.2

TIME CONSTANT

XX.X

Range 0.5 ... 99.9s

Standard 3.0s

FCt. 1.3

L.F. CUTOFF

XX XX

Range 1 ... 20%

st

(1

value < 2nd value)

Standard: 04 ... 05%.

m3/h

l/s

Ga./m

Perc.

Description and settings
Full-scale range

→

Set full-scale range, i.e. for the maximum occurring flow rate.
This affects all functions where values have to be set as % of
full-scale range:

Fct. 1.3 SMU Fct. 1.5 Current output

↵

s

Fct. 1.7 Status output Fct. 2.1 Test Q
Fkt. 3.4 Application

Time constant

→

Setting the time constant for a two-pole low pass for signal

S

flow rate in order to attain 67% of the new flow value.

damping. This time is needed after an abrupt change in the

↵

The time constant acts equally on the current output and the
display, and also on the status output when the ‘sign’ or ‘limit
value’ functions are selected.
The value can be transmitted via the HART interface with or
without use of the time constant.
If the time constant is changed, the noise level needs to be
reset if the noise filter is activated (see Fct. 3.4 Application
“Filter setting").

Low-flow cutoff (SMU)

For characteristic, see Fig. 1 in Section 2.3

→

At low flows, flow display and counting are suppressed. This
also applies to the negative flow direction.

↵

Cutoff ‘off’ value (1st figure) and cutoff ‘on’ value (2nd figure)
must be set as a percentage of the full-scale range (see Fct.

1.1 Full-Scale). The SMU acts on the current output, pulse or
status output, all counters and also values via the HART
interface and the display.

FCt. 1.4

inFo

diSPlaY Flow

Edit

↑ "user unit"

Standard: Percent

22

DISPLAY

Percent

no diSPlaY

m3/h

l/s

Ga./m

Display

Setting for display form of measured values and messages in

→

the local display. The following settings are possible:

Display of flow

↵

Select unit for display of current flow.
Nothing displayed when “no display" has been set.

↵

ALTOFLUX 2W

02/2001

Part B IFC 040 Signal converter Section 4.4

Display texts

inFo
Edit

"user unit"

↑

Standard: m3

inFo

8.88888

88.8888

888.888

8888.88

88888.8

888888.
Auto.

Standard: 888888.

inFo

Edit

↑

Standard: No

inFo

Edit

↑

Standard: No

inFo

Edit

↑

Standard: No

inFo

diSP.meSSaGeS

Edit

↑

Standard: Yes

dim. counter

m3

Gal.

disPL,Format

"units see above"

PoS cnt.disP.

YES

NO

neG cnt.disP.

YES

NO

Sum cnt.disP.

YES

NO

YES

NO

Description and settings
Dimension of counters

↵

Select unit (dimension)
for positive, negative and sum counters.

l

↵

Display format

↵

Select format for positive, negative and sum counters. The
first six settings have fixed positions for the decimal point. If
an off-scale indication occurs here, the marker flashes
against the displayed value. Off-scale indication can be
prevented by selecting a different format.
The setting “Automatic" will change the display such that
always the highest counter value is displayed, if necessary in

↵

exponential format. An appropriate warning is shown when
an off-scale indication occurs, provided the display of
messages is activated in Function 1.4 “Display" setting
“Display of messages". A change of format will not alter the
value of the counter.

• Positive counter display

↵

• Negative counter display

• Sum counter display

↵

The positive, negative and sum counter display functions
allow the respective counter to be switched on (Yes) or off
(No).
When several displays are selected, display of numerical

↵

values is cyclic.

↵

↵

↵

Display of messages

↵

Setting as to whether, in addition, messages from self-test
functions are to be displayed (Yes) or not (No).

↵

02/2001

ALTOFLUX 2W

23

Section 4.4 Part B IFC 040 Signal converter

Display texts
FCt. 1.5

CURRENT OUTPUT

For HART function “No" or

address “0"

inFo

Function

Edit

PoS.direction
neG.direction

abSolute

↑ neG-0-PoS

Standard: absolute

inFo

0 Perc.current

XX.X

Range 4.0 ... 14.0mA

Standard: 4.0 mA

inFo

100 Perc.current

XX.X

Range 10.0 ... 20.0 mA

I

< I

0%

100%

Standard: 20 mA

inFo

error current

XX.X

Range 3.6 ... 22.4 mA

I

< I0% or I

Error

100%

< I

Standard: 22 mA

mA

mA

mA

Error

off

Description and settings
Current output

For characteristic, see Fig. 2 in Section 2.3

→

Settings for the current output
Not possible when ”Address 1 –15” is set under Fct. 3.6
HART (equivalent to multidrop mode).
In that case, only a constant current needs to be set,
see Fct. 3.6 HART “I Multidrop".
Fct. 1.5 Current output then has “no function".

↵

Setting the characteristic of the current output
“off” = 0 per cent current output

Please note:
Fct. 1.7 Status output, “Automatic range change" setting.

↵

0 per cent current

↵

Setting of current at “zero” flow(I0%)

↵

100 per cent current

↵

Setting of current at 100 % flow (I
according to the full-scale range (Q

↵

under Fct. 1.1 Full Scale.

100%

100%

),

)

Fault current

↵

The fault current that is output in the event of a fault.

↵

Please note:
When the current output is overranged, the maximum current
is 21mA and has been preset by factory.

24

ALTOFLUX 2W

02/2001

Part B IFC 040 Signal converter Section 4.4

Display texts
FCt. 1.6

PULSE OUTPUT

inFo

Edit

PoS.direction
neG.direction

abSolute

↑

Standard: absolute

Other selection

inFo

XXX0.

Range 30 ... 1000 ms

Standard: 50 ms

inFo

Pulse/Volume

XXX.XXX

↑

Range 0 ... 10 Hz

Standard:

1 pulse per m3

Function

off

PulSe width

mS

m3

Gal.

user unit"

“

Description and settings
Pulse output

Settings for the pulse output

→

Characteristic, see Fig. 3 in Section 2.3
Only possible when “Pulse output” is set under Fct. 3.5

Hardware.
When “Status output” selected, Fct. 1.6 has “no function".

Function

↵

Setting of the characteristic of the pulse output
“off” = switch at output open

↵

Pulse width

Minimum interpulse period = half pulse width

↵

Pulse width defines the time during which the switch at the
output is closed and high current flows between terminals B1

↵

or B2 and B⊥. The maximum pulse rate is selected at the
same time, as the interpulse period is at least equal to half

the pulse width:

rate Pulse

max

=

1

widthpulse1.5

×

Pulses / Volume

Number of pulses per unit volume

↵

Pulses/Volume is used to set the number of pulses that are
output for the given volume. If 10.0 is set at Unit m

l

pulses are output per cubic metre. If 0.01 is set at Unit l , one
pulse is output per 100 litres.

3

, 10

↵

A large pulse width together with a high pulse rate will

•

cause overranging. Therefore, pulse rate is limited so
that the minimum interpulse period does not drop below
half the pulse width. In that case, error message due to
overranging of the pulse output, i.e. marker flashes and,
if activated in Fct. 1.4 “Display", is output in the form of
horizontal scrolling.

02/2001

When the pulse output is overranged, the missing pulses

•

are output later, at times of lower flow.

ALTOFLUX 2W

25

Section 4.4 Part B IFC 040 Signal converter

gang

Display texts
FCt. 1.7

STATUS OUTPUT

inFo

Edit

emPtY PiPe

(für Stromaus

↑ limit value

Standard: off

inFo

XXX

Range 5 ... 80%

Standard: 20%

Function

off
on

all error

SiGn

overflow

auto.ranGe

limit

Perc.

Description and settings
Status output

Settings for the status output

→

Only possible when “Status output” set under Fct. 3.5
Hardware.
When “Pulse output” selected, Fct. 1.7 has “no function".

↵

Setting the characteristic of the pulse output

Switch open Switch closed

permanently -

- permanently
error no error
positive flow negative flow
no overranging overranging
pipe/tube completely filled pipe/tube empty

↵

range above limit range below limit

)

normal function zoom-in function active

inactive active

When automatic range change selected

the limit value must be set as a percentage of the full-scale

↵

range (Q

↵

Below the set limit value, the current output has a zoom-in

), (see Fct. 1.1):

100%

function. The flow range from “0” to “Limit” is projected to the
I0% to I

100%

range.

inFo

XXX

Range 0.1 ... 110 %

Standard: 10 %

inFo

XXX

Range 0.1 ... 110 %

Standard: 20 %

26

1.limit.value

Perc.

2.limit.value

Perc.

For characteristic of automatic range change, see Fig. 4 in
Section 2.3

When limit value selected

the ‘on’ and ‘off’ values must be set as a percentage of the

↵

full-scale range (Q

↵

with adjustable hysteresis, as the ‘on’ value can be smaller or

) (see Fct. 1.1):

100%

larger than the ‘off’ value.
For characteristic of limit switch, see Fig. 5 in Section 2.3

↵

↵

ALTOFLUX 2W

02/2001

Part B IFC 040 Signal converter Section 4.4

Display texts
FCt. 2.1

Edit

YeS Sure

↑

↑

FCt. 2.2

HARDWARE INFO

inFo.no

modul ADC

StAtUS

modul ADC

inFo.no

StAtUS

inFo.no

modul diSPlaY

StAtUS

modul diSPlaY

inFo.no

modul HART

StAtUS

modul HART

TEST Q

not Sure

-110.0

-100.0

-50.0

-10.0

0.0

10.0

50.0

100.0

110.0
Perc.

x.xxxxx.

xxxx

xxxxxx

xxxx

modul IO

x.xxxxx.

xxxx

modul IO

xxxxxx

xxxx

x.xxxxx.

xxxx

xxxxxx

xxxx

x.xxxxx.

xxxx

xxxxxx

xxxx

Description and settings
Test measuring range Q

→

Operator inquiry as to whether test to be carried out?

↵

If “YeS Sure”, fixed values for the outputs can be set relative
to the full-scale range.

No setting for the outputs. When the function is terminated,
the outputs operate as before.

↵

Hardware information and error status

→

In the event of an error, scan and note down all information

↵

(software number = Info Number, and status).
Important if factory needs to be consulted.

↵

Settings are not possible here.

↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵
↵

02/2001

ALTOFLUX 2W

27

Section 4.4 Part B IFC 040 Signal converter

Display texts
FCt. 3.1

LANGUAGE

Edit

EnGliSh

French

↑ German

Standard: English

FCt. 3.2

FLOW METER

inFo

diameter

XXX.X

mm

Range

10 - 250 mm = 3/8“ - 6“

Standard: see nameplate

inFo

Full Scale

XXX.XXX

m3/h

Ga./m

↑ "user unit"

Range:

0.3-12 m/s = 1-40 ft/

inFo

PrimarY conStant

XX.XXXX

GKL

Range 1.0 ... 19.9999

Standard: see nameplate

X.XXXX

K50

Range 0.5 ... 1,5

Standard: see nameplate

X.XXXX

K25

Range 0.5 ... 1.5

Standard: see nameplate

inFo

Flow direction

Edit

PoS. Flow

↑ neG. Flow

Standard: pos. flow

l/s

Description and settings
Select language for display texts

→

↵

Primary head – to set data

Data have been factory-set. Changes here only necessary

→

when the electronic unit has been replaced.

Meter size (nominal diameter)

↵

Set nominal diameter / meter size of the primary head
(flowmeter). DN 150 / 6” is currently the largest size

↵

available.

Full-scale range

↵

Set full-scale range, i.e. the maximum occurring flow. This
affects all functions in which values have to be set as % of
the full-scale range:

Fct. 1.3 Low-flow cutoff Fct. 1.5 Current output

↵

s

Fct. 1.7 Status output Fct. 2.1 Test Q
Fct. 3.4 Application

Primary constant

↵

The primary constant is used for setting three calibration
values for the primary head.

↵

GKL describes the calibration value at 100mApp field current
(see nameplate).
K50 describes the variation at 50mApp field current compared
to 100mApp (see nameplate).

↵

K25 describes the variation at 25mA
to 100mApp (see nameplate).

↵

field current compared

pp

Define direction of flow

according to direction shown by arrow on the primary head

↵

Set the main direction of flow or
the forward flow in the case of F/R mode:
in direction of arrow = PoS. DFl. (positive flow)

↵

opposite dir. of arrow = neG. DFl. (negative flow)

28

ALTOFLUX 2W

02/2001

Part B IFC 040 Signal converter Section 4.4

Display texts
FCt. 3.3

ZERO POINT

Edit

YeS Sure

↑

8 XXX.X

Edit

not Save

Yes Save

not Sure

Perc.

Description and settings
Calibrate the zero

→

Carry out only after a replacement of the electronic unit or if,
at low flow, an offset is presumed.

↵

Please note!

Measuring tube must be completely filled with the

•

process liquid!

Flow must truly be “zero”!

•

Display of current flow rate as a percentage of the full-scale
range. (The segments of the “8” are reduced in keeping with

↵

the progress of measurement.)
Save new zero value?

↵

02/2001

ALTOFLUX 2W

29

Section 4.4 Part B IFC 040 Signal converter

Display texts
FCt. 3.4

APPLICATION

inFo

emPtY PiPe

Edit

YES

↑ NO

Standard: Yes

inFo

Field current

Edit

100-50-25mA

50-25mA

↑ 25mA

Standard: 100-50-25mA

inFo

ModuS F.current

Edit

two timeS

↑ three timeS

Standard:

two times

inFo

limit

Edit

150 Perc.
300 Perc.

↑ 1000 Perc.

Standard: 150 %

inFo

Filter

Edit

Filter off

PulSe Filter

↑ noiSe Filter

Standard: filter off

Description and settings
Application = set characteristic of measuring point

→

Pipe/tube has run dry

↵

The empty pipe identifier can be switched on (YES) and off
(NO). A load-independent current of approx. 25nA flows
continuously from the electrodes to ground (pipeline /

↵

grounding rings). If this current can no longer flow, and the
empty pipe identifier is activated, the measured value is set to
zero and an error message is enabled (see Fct. 1.4, setting of
“Display messages"). If not required, deactivate the empty
pipe identifier (=NO).

Field current

Default value for maximum allowable field current.

↵

If the available energy is not sufficient for the set maximum
field current, automatic reduction to the next lower value.
Where flow is pulsating, it is advised to reduce the field
current from 100mA

↵

(setting: 50-25mA). Above approx. 10-20% flow, continuous

(setting: 100-50-25mA) to 50mA

pp

measurement is then present.

F current mode

↵

• The double setting is standard

(follows flow at a faster rate),

• The triple setting reduces strong interference

↵

(e.g. from solids contents).

Limitation

↵

1 150% setting is standard,
2 300% and 1000% settings (advisable with pulsating flow

or low conductivity),

all as percentage of full-scale value, see Fct. 1.1.

↵

Please note:
3 if noise filter used (see following function), set limitation

to 1000%.

4 Do not increase limitation if process liquids contain

solids.

Filter

↵

• Filter ‘off’ setting is standard,

• Noise filter if conductivity is low

• Activate pulse filter if solids contents or other pulsed

↵

(for characteristic, see Fig. 6 in Section 2.3)

interference involved
(for characteristic see Fig. 7 in Section 2.3).

Please note:
Further settings are required when pulse filter or noise filter is
activated, see below:

pp

30

ALTOFLUX 2W

02/2001

Part B IFC 040 Signal converter Section 4.4

Display texts

selection

“Pulse Filter"

inFo

PulSe duration

XX.X

Range 0.1 ... 25.0 s

Standard: 1.0 s

inFo

XXX

Range 1 ... 100 %

Standard: 5 %

selection

“noiSe Filter"

inFo

noiSe SuPPreS

Edit

↑

Standard:

inFo

XXX

Range 5 ... 100 %

Standard: 20 %

inFo

XX.X

Range 0.1 ... 25.0 %

Standard: 5 %

PulSe limit

two timeS

three timeS

four timeS

two times

noiSe Flow

noiSe level

Perc

Perc.

Perc.

Description and settings

... pulsed interference is suppressed. In addition to the setting
“Limitation” over the total measuring range, see above,
“Pulse duration” and “Pulse limitation” dynamically limit
abrupt changes in the measured value.

Pulse duration

↵

Setting the pulse duration limitation

S

↵

Time must be longer than the duration of the pulsed
interference (see Fig. 7 in Section 2.3).

Pulse limitation

↵

The pulse limitation allows setting of the size of change from
one measured value to the next (as percentage of the full-

↵

scale range, see Fct. 1.1).

... suppresses unsteady measured values caused e.g. by low
electrical conductivity of the process liquid or high solids
contents. When noise filter is activated, the “Limitation”, see
above, should be set to 1000%, otherwise measured values
are too low in the upper flow range.

Noise rejection

.

↵

The level of noise rejection can be selected as a factor of the
interference level.

↵

Noise flow

Adjustment when noise is dependent on flow.

↵

approx. 20% in normal 2-wire operation

•

approx. 80% when operated with power booster

•

↵

in both cases as percentage of full-scale range (see Fct. 1.1)
(see Fig. 6 in Section 2.3)

Noise level

Setting of the noise level (unsteadiness) that can be

↵

observed without use of the filter.
Setting the noise level “peak-to-peak”
(e.g. width on a recorder or difference between minimum and

↵

maximum value in display) as percentage of full-scale range
(see Function 1.1).
Measurement at high flow rate (maximum flow rate) when
filter deactivated. If time constant has been changed (see Fct.

1.2) this setting must be carried out again. The filter will not
take effect if the noise level is set too low. It is better to set
the noise level too high rather than too low (see Fig. 6 in
Section 2.3).

02/2001

ALTOFLUX 2W

31

Section 4.4 Part B IFC 040 Signal converter

Display texts
FCt. 3.5

HARDWARE

inFo

Function term.B

Edit

PulSe outPut

↑ StatuSoutPut

Standard: pulse output

FCt. 3.6

HART

inFo

Function

Edit

YES

↑ NO

Standard: No

inFo

I 4mA trim.

X.XXX

mA

Range 3.700 ... 5.000 mA

Standard: 4.000 mA

inFo

I 20mA trim.

XX.XXX

mA

Range 18.000 ... 21.000 mA

Standard: 20.000 mA

inFo

AdreSS

XX

Adr

Range 0 ... 15

Standard: 0

selection “1 ... 15"

inFo

i multi droP

XX.X

mA

Range 4.0 ... 20.0 mA

Standard: 5.0 mA

Description and settings
Hardware

Setting the function of terminals B1 and B2

→

↵

This is active when “Pulse output” selected (see Fct. 1.5) and
the status output (see Fct. 1.6) has “no function“.

↵

This is active when “Status output” selected (see Fct. 1.6)
and the pulse output (see Fct. 1.5) has “no function".

®

HART

Settings for HART® communication

→

(FSK modulation with 1200 bauds on the current output)

Function

activate (=YES) or deactivate (=NO) the interface

↵

When HART

®

interface is activated, the decimal point on the
left in the display flashes when communication is taking place
(in the multidrop mode only when the appropriate device

↵

responds).

The ‘I 4mA trim.’ and ‘I 20mA trim.’ values correspond to the

↵

values to be set via the HART

↵

These values have no function when HART® is deactivated.

®

interface (Cmd #45 and #46).

↵

↵

Address

↵

Set address for a device in the case of HART
communication.

↵

®

If the address is greater than “0”, the current output is
operated with constant current (multidrop).

Multidrop mode

↵

In the multidrop mode a constant current is present at the
current output. This is 4 mA in accordance with the HART

↵

agreements. However, if there are sufficient reserves in the
network, better measuring results are obtained with 5 mA to 6
mA (signal-to-noise ratio). Set 4mA when operating with the
power booster (no benefit from higher values).

®

32

ALTOFLUX 2W

02/2001

Part B IFC 040 Signal converter Section 4.5 + 4.6

4.5 Error messages in measuring mode

Warnings Description of error Eliminate error
Pipe empty (1)

Field coil defective

Linearity

Low energy

Overranging (2)
Overflow current

Overflow pulse (3)

Overflow counter
Line interrupt (4)

Fatal error

Is checked only when “Application“ is activated in Fct. 3.4

(1)

Value for checking overranging is set in Fct. 3.4 "Application" relative to full-scale range

(2)

Missing pulses are recovered at times when pulse rate is low

(3)

Is checked only when a counter is activated in Fct. 1.4 "Display"

(4)

Pipe (partially) empty Fill pipe
Poor grounding, or none at all Check grounding system
Electrical conductivity too low Check process liquid
Electrodes contaminated Clean electrodes
Electrode wire break Repair wires
Short-circuit, break, or excess

temperature
Analog/digital converter (ADC)
defective
Primary head defective Replace primary head
K 50 constant incorrect Correct, see nameplate
ADC zero incorrect Replace electronic unit
Energy too low for correct
measurements
ADC overranged Change Fct. 3.4 Limitation

Measured value higher than full­scale range
Pulse rate too high,
max. 1 / (1.5×pulse width)
Overflow of a counter Reset counter

Power failure Delete error message and, if
Severe error, measurement

interrupted

Check and eliminate fault
Replace electronic unit

Voltage is less than 14 V,
increase energy

Check device parameters and
correct if necessary
Check device parameters and
correct if necessary

necessary, reset counter
Replace electronic unit

4.6 Reset counters and cancel error messages

Display texts

... measuring mode ...

Description and settings
Entry into RESET menu

↵

FCt. 4.0

RESET MENUE

FCt. 4.1

ERROR RESET

→

Resetting the messages

power failure and counter overflow

↑

rESEt

NO

↵

→

Reset

all counters

FCt. 4.2

YES

↑

COUNTER RESET

rESEt

NO

YES

↑

02/2001

↵

ALTOFLUX 2W

33

Section 5.1 Part C Technical data, Block diagram and Measuring principle

 7HFKQLFDOGDWD

5.1 Full-scale ranges
Full-scale range Q

100%

Flow Q = 100% 85 Liter/h - 763 m3/h (0.37 – 3361 US Gal/min), adjustable as required,

equivalent flow velocity 0,3 – 12 m/s (1 – 40 ft/s)

Units m3/h, Liter/s, US Gal/min user-defined unit, e.g. US MGal/min

Flow tables

v = flow velocity in m/s v = flow velocity in ft/s

Meter size Full-scale range Q

100%

in m3/h

v=0.3m/s v=1m/s v=12 m/s v=1 ft/s v=3.3 ft/s v=40 ft/sDNmminch

(minimum) (maximum)
103/
151/

0.0849 0.2827 3.392 103/

8

0.1909 0.6362 7.634 151/

2

25 1 0.5302 1.767 21.20 25 1 0.5302 1.767 21.20
50 2 2.121 7.069 84.82 50 2 2.121 7.069 84.82
80 3 5.429 18.10 217.1 80 3 5.429 18.10 217.1
100 4 8.483 28.27 339.2 100 4 8.483 28.27 339.2
150 6 19.09 63.62 763.4 150 6 19.09 63.62 763.4

Meter size Full-scale range Q

In US Gal/min

DNmminch

(minimum) (maximum)

0.0849 0.2827 3.392

8

0.1909 0.6362 7.634

2

100%

34

ALTOFLUX 2W

02/2001

Part C Technical data, Block diagram and Measuring principle Section 5.2

5.2 Error limits at reference conditions
Display, digital values, pulse output

• calibated in accredited test rigs to EN 17 025 by direct comparison of volume

maximum error in % of measured values (not typical values)

F

Flow velocity in m/s and ft/s

v

Reference conditions similar to EN 29104

Product water at 10 – 30 °C / 50 – 86 °F
Electrical conductivity
Power supply (rated voltage)
Ambient temperature 20 - 22 °C / 68 – 71.6 °F
Warm-up time 60 min
Inlet / outlet runs 10 × DN / 2 × DN (DN = meter size)
Primary head properly grounded and centered
Measuring time 100 s

>300 µS/cm

(±2%)

U

N

Meter size Maximum error
DN mm inch

DN 10 - 1503/8” – 6“

Current output
Reproducibility

at

constant flow

v ≥ 1 m/s / ≥ 3 ft/s:

0,5% MV

≤ ±

Same error limits as above, additionally ± 10 µA

v ≥ 1 m/s / ≥ 3 ft/s:

0,1% MV

≤ ±

in % of measured value (MV)

v < 1 m/s / < 3 ft/s:

5 mm/s /

≤ ±

v < 1 m/s / < 3 ft/s:

1 mm/s /

≤ ±

at ...

≤ ±

≤ ±

0.2 inch/s

0.04 inch/s

External influences typical values maximum values

Ambient temperature
Pulse output 0,003 % MV 1)0,01 % MV
Current output 0,01 % MV 1)0,025 % MV

Power supply

All KROHNE signal converters undergo burn-in tests, duration minimum 20 hours at varying ambient temperature

1)

–20 to + 60 °C / -4 to +140 °F. The tests are controlled by computers.

02/2001

< 0,02 % MV 0,05 % MV at 10 % variation

ALTOFLUX 2W

1)

1)

at 1 K / 1.8 °F variation

}

35

Section 5.3 Part C Technical data, Block diagram and Measuring principle

5.3 IFC 040 Signal converter

Current output

Function • all operating data configurable

• for passive mode

• standard HART® communication

Current: fixed ranges

variable ranges

Current: fixed ranges

4-20 mA
for Q = 0% I
for Q > 100% I
for Q = 100% I

4-20 mA

= 4– 14 mA

0%

= 10– 20 mA

100%

= 21 mA

max

adjustable in

0.1 mA increments

variable ranges

for Q = 0%

Binary output

Function • used as pulse or status output

• all operating data configurable

• galvanically isolated from current output and all
input circuits

Passive mode Selectable according to NAMUR (DIN 19 234)

or as contact:

• open • open

• closed • closed

Pulse output digital pulse division, interpulse period non-uniform,

therefore if frequency and cycle meters connected
allow for minimum counting interval:

gate time, counter ≥

10

100%

HzP

[]

pulse width 30 – 1000 ms
(adjustable in 10 ms increments)

Status output configurable as measuring range identification for

automatic range change, indicator for flow direction,
overflow, errors, trip point or empty pipe indication

Time constant 0.5 – 99.9 s, adjustable in 0.1 s increments
Low-flow cutoff cutoff “on“ value: 1 – 19%

cutoff “off“ value: 2 – 20%

36

ALTOFLUX 2W

cutoff “on“ value: 1 –
19%
cutoff “off“ value: 2 –
20%

02/2001

Part C Technical data, Block diagram and Measuring principle Section 5.3

Local display

3-field LCD

Display function actual flowrate, forward, reverse and sum counters

(6-digit), and status messages

units: actual flowrate

m3/h, liter/s., US gallon/min or in user defined unit,
e.g. US Mgallon/day

counter

m3, liter, US gallon or in user defined unit,

e.g. US Mgallon/day
Language of plain text English, German, French, others on request
Display: top field

6-character, 7-segment, numeral and sign display,

and symbols for key acknowledgement

middle field
bottom field

4-character, 14-segment text display

6 markers to identify display in measuring mode and

messages of outputs

Hazardous duty versions

Connections in following protection classes can be

selected by customer during installation:

intrinsic safety “i“

•

increased safety “e“

•

flameproof enclosure “d“

•

or

Power supply

Current output (2-wire connection) 4-20 mA via proprierity power supply 14-36 V

A)

Power Booster

B)

Additionally to A) = 2×2 –wire
connection

For demanding applications without changing or

removing the meter. Connect power terminals to...

proprierity power supply

•

22 mA, 14-36 V DC
24 V DC, max. 1 W

•

or

(same protection as A = galvanically isolated)

Housing

Material die-cast aluminium with polyurethane finish
Ambient temperature - 25 to + 60°C / -13 to +140 °F
Protection category (IEC 529/ EN 60529) IP 67, equivalent to NEMA 6

02/2001

ALTOFLUX 2W

37

Section 5.4 Part C Technical data, Block diagram and Measuring principle

5.4 IFS 4002 Primary head
Meter sizes DN 10, 15, 25, 50, 80, 100, 150 and

3

/8“, 1/2", 1“, 2“, 3“, 4“, 6“

Pipe flanges

to DIN 2501 (= BS 4504)
to ANSI B 16.5

Electrical conductivity

DN 10, DN 15, DN 25, DN 50, DN 80 / PN 40
DN 100, DN 150 / PN 16,

3

/8“, 1/2", 1“, 2“, 3“, 4“, 6“, class 150 lb / RF

≥ 5 µS/cm
≥ 20 µS/cm for demineralized cold water

Temperatures Ambient temperature

-25 to + 60 °C

-13 to +140 °F

-25 to + 40 °C

-13 to +104 °F

Insulation class of field coils

H / ≤ 140 °C / ≤ 284 °F process temperature

Process temperature

-25 to ≤ + 60 °C

-13 to ≤ +140 °F

-25 to ≤ +140 °C

-13 to ≤ +284 °F

Power supply for field coils from signal converter
Electrode design Flat elliptical electrodes, fixed mounted,

surface polished

Protection category (EN 60 529 / IEC 529) IP67, equivalent to NEMA 6
Grounding rings Available as option

Materials

Measuring tube austenitic stainless steel
Liner

DN 10 – 15 / 3/8“- 1/2" Teflon® - PTFE
DN 25 – 150 / 1“- 6“ Teflon® - PFA

(reinforced with stainless steel mesh)
Electrodes
Standard Hastelloy C
Option Stainless steel 1.4571 or SS 316 Ti,

Hastelloy B, titanium, tantalum, platinum-

Iridium, others on request
Connecting flanges *
DIN: DN 10 - 80 (3/8“ - 3“) steel 1.0460 (C 22.8) or ANSI C 1020

≥ DN 100 ( ≥ 4)

steel1.0038 (RST 37.2) or ANSI C 1035
ANSI steel ASTM A 105 N

Housing *
DN 10-15 / 3/8“- 1/2" GTW-S 30
≥ DN 25 / ≥ 1“

Grounding rings

Sheet steel

Stainless steel 1.4571 or SS 316 Ti,

Hastelloy C, Hastelloy B, titanium, tantalum

*

with polyurethane coating

38

ALTOFLUX 2W

02/2001

Part C Technical data, Block diagram and Measuring principle Section 5.5

g

g

g

5.5 Dimensions and weights

Flange connections to ... Dimensions

DIN 2501

Ansi B 16.5

Dimension “a“ without flange gaskets (not necessary with Teflon® PTFE liner or PFA liner

•

For meter size

•

Meter size Dimensions

DIN ANSI

DN PN inch DIN ISO 13359 ANSI
10 40
15 40
25 40 1 150 (5.91) 200 (7.87) 150 (5.91) 301 (11.85) 121 (4.76) 115 (4.53) 108 (4.25) 9.5 (21) 11 (25)
50 40 2 200 (7.87) 200 (7.87) 200 (7.87) 383 (15.08) 160 (6.30) 165 (6.50) 152 (6.00) 11 (25) 11 (25)
80 40 3 200 (7.87) 200 (7.87) 200 (7.87) 400 (15.75) 173 (6.81) 200 (7.87) 191 (7.50) 15 (33) 16 (36)
100 16 4 250 (9.84) 250 (9.84) 250 (9.84) 451 (17.76) 233 (9.17) 220 (8.66) 228 (8.98) 18 (40) 21 (46)*
150 16 6 300 (11.81) 300 (11.81) 300 (11.81) 492 (19.37) 257 (10.12) 285 (11.22) 279 (10.98) 25 (55) 21 (46)*

DN 10- 150 PN 40, 16 see table

3

/8“- 6“ 150 lb/ RF

300 lb/ RF

≥

3

/8“ a flange connection 1/2" is necessary.

in mm and (inch)

a

(fitting length)

3

150 (5.91) - 150 (5.91) 330 (12.99) 121 (4.76) 90 (3.54) 88.9 (3.50) 7.5 (17) 8.5 (19)

/

8

1

150 (5.91) 200 (7.87) 150 (5.91) 330 (12.99) 121 (4.76) 95 (3.74) 88.9 (3.50) 7.5 (17) 8.5 (19)

/

2

see table
dimensions supplied on request

bc

max. process pressure ratin

•

DN 10 – 40 / 3/8“ - 11/2"

in mm and (inch)

ø D

DIN, ISO ANSI

acc. DIN flanges, see column “PN“

PN 40 = 580 psi

Tolerance details

approx. Weight in

with DIN

flanges

and PN 16 = 232 psi

for fitting length

kg (lb)

with ANSI

flanges

dimensions “a“

Standard min ± 1mm / ± 0.04“
ISO DIN 13 359 +0 / -3 mm / +0 / -0.12“

DN 50 – 150 / 2“ – 6“

02/2001

ALTOFLUX 2W

39

Section 5.6 Part C Technical data, Block diagram and Measuring principle

(

(

5.6 Limits
PLEASE NOTE !

• The limits specified in the table for process

• Abbreviation used:

temperature and operating pressure make
allowance for the tube liner and the flange
standard.

DIN = DIN 2501 (= BS 4504)
ANSI = ANSI B 16.5

• Refer to certificates of conformity for max.

allowable operating data for hazardous-duty
versions, provided only with hazardous-duty
equipment.

®

Limits for Teflon

Liner Flanges Max. operating pressure in bar (psig)

Standard

PFA

DIN DN 25, 50, 80 PN 40 40

ANSI 1“, 2“, 3“, 4“, 6“ 150 lb 19.6(284)19.0(275)18.7(271)18.1(262)17.7(256)17.0(246)16.2 (235)

PTFE

DIN DN 10, DN 15 PN 40 40
ANSI3/8“, 1/2" 150 lb 19.6(284)19.0(275)18.7(271)18.1(262)17.7(256)17.0(246)16.2 (235)

PFA liner und Teflon® PTFE liner

at a process temperature of ...

Nominal
diameter

DN 100, DN 150 PN 16 16(232)16(232)16(232)16(232)16(232)16(232)16 (232)

Pressure
rating /
Class

300 lb on request

300 lb on request

≤

(≤

105 °F)

≤

40 °C

(≤

580)40(580)40(580)40(580)40(580)40(580)40 (580)

580)40(580)40(580)40(580)40(580)40(580)40 (580)

60°C

140 °F)

≤

(≤ 158 °F)

≤

70 °C

1)

90 °C

(≤

195 °F)

ambient temperature with max. +40 °C / +104 °F

≤

100 °C

(≤

210 °F)

≤

120 °C

(≤

250 °F)

≤

140 °C

(≤

284 °F)

1)

Vacuum load

Liner Nominal diameter Max. operating pressure in mbar (psia)

DIN ANSI

PFA

DN 25 - 150 1“- 6“ 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) 0 (0)

PTFE

DN 10, DN 15

3

/8“, 1/2“ 0 (0) 0 (0) 0 (0) 0 (0) 0 (0) 500 (7.3) 750 (9.7)

40

≤

(≤

105 °F)

40 °C

≤

60 °C

(≤

140 °F)

ALTOFLUX 2W

≤

(≤ 158 °F)

at a process temperature of ...

70 °C

≤

90 °C

(≤

195 °F)

Teflon® is a registered trademark of Du Pont.

≤

100 °C

(≤

210 °F)

≤

120 °C

(≤

250 °F)

02/2001

≤

140 °C

(≤

284 °F)

Part C Technical data, Block diagram and Measuring principle Section 6

%ORFNGLDJUDPRIVLJQDOFRQYHUWHU

1 AD converter

overdrive-proof signal processing,

•

processes flow peaks
up to 20 m/s (65ft/s) more rapidly and
accurately
than competition modules
digital signal processing and sequence

•

control
high-resolution Delta-Sigma A/D

•

converter,
digitally controlled and monitored
high signal-to-noise ratio, signal

•

processing: patent pending

2 Field power supply

The low-loss field power supply generates

•

the pulsed, electronically controlled DC
current for the magnetic coils of the
primary head
The field current ensures matched to the

•

power, an optimum signal amplitude and
signal-to-noise separation

3 Current output, HART® modem

galvanically isolated from all other

•

terminals, but not from power booster
converts the digital output signal from the

•

µP 2 microprocessor into a proportional
current
communication via HART®

•

4 Binary output

galvanically isolated from other groups

•

can be used as pulse or status output

•

output (B1), terminal for up to 100 mA

•

output (B2), terminal according NAMUR

•

(DIN 19 234)

5 Display/operator control unit

large LCD display, 3-line

•

3 keys for operator control of the signal

•

converter
connection to the internal IMoCom bus

•

6 IMoCom bus plug connector

for connection of external control and test

•

devices

Power booster input

7

02/2001

ALTOFLUX 2W

41

Section 7 Part C Technical data, Block diagram and Measuring principle

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The flowmeter is designed for electrically conductive fluids.
Measurement is based on Faraday’s law of induction, according to which a voltage is induced in

an electrically conductive body which passes through a magnetic field. The following expression
is applicable to the voltage:

U = K × B × v × D

U = induced voltage
K = an instrument constant
v = mean velocity
B = magnetic field strength
D = tube diameter

Thus the induced voltage is proportional to the mean flow
velocity, when the field strength is constant.
Inside the electromagnetic flowmeter, the fluid passes
through a magnetic field applied perpendicular to the
direction of flow. An electric voltage is induced by the
movement of the fluid (which must have a minimum
electrical conductivity). This is proportional to the mean
flow velocity and thus to the volume of flow:

The induced voltage signal is picked up by two electrodes which are in conductive contact with the
fluid and is transmitted to a signal converter for a standardized output signal.
This method of measurement offers the following advantages:

1. No pressure loss through pipe constriction or protruding parts.

2. Since the magnetic field passes through the entire flow area, the signal represents a mean

value over the pipe cross-section; therefore, only relatively short straight inlet pipes

DN from the electrode axis are required upstream of the primary head.

5

x

3. Only the tube liner and the electrodes are in contact with the fluid.

4. Already the original signal produced is an electrical voltage which is an exact linear function

of the mean flow velocity.

5. Measurement is independent of the flow profile and other properties of the fluid.
The magnetic field of the primary head is generated by a square wave current fed from signal
converter to the field coils.
This field current alternates between positive and negative values. Alternate positive and negative
flowrate-proportional signal voltages are generated at the same frequency by the effect of the
magnetic field, which is proportional to the current. The positive and negative voltages at the
primary head electrodes are subtracted from one another in the signal converter. Subtraction
always takes place when the field current has reached its stationary value, so that constant
interference voltages or external or fault voltages changing slowly in relation to the measuring
cycle are suppressed. Power line interference voltages coupled in the primary head or in the
connecting cables are similarly suppressed.

42

ALTOFLUX 2W

02/2001

Part C Technical data, Block diagram and Measuring principle Section 8

g

 ,I\RXQHHGWRUHWXUQIORZPHWHUVIRUWHVWLQJRUUHSDLUWR.52+1(

Your electromagnetic flowmeter

• has been carefully manufactured and tested by a

company with ISO 9001 certification

• and volumetrically calibrated in one of the world’s

most accurate test rigs.

If installed and operated in accordance with these
operating instructions, your flowmeter will rarely
present any problems. Should you nevertheless
need to return a flowmeter for checkout or repair,
please pay strict attention to the following points:

Due to statutory regulations concerning protection of
the envi-ronment and the health and safety of our
personnel, Krohne may only handle, test and repair
returned flowmeters that have been in contact with
liquids if it is possible to do so with-out risk to
personnel and environment. This means that
Krohne can only service your flowmeter if it is
accompanied by a certificate in line with the followin
model confirming that the flowmeter is safe to
handle.

Specimem certificate

can only service your flowmeter if it is accompanied
by a certificate in line with the following model
confirming that the flowmeter is safe to handle.
If the flowmeter has been operated with toxic,
caustic, flammable or water-endangering liquids, you
are kindly requested

• to check and ensure, if necessary by rinsing or
neutraliz-ing, that all cavities in the flowmeter are
free from such dangerous substances.
(Directions on how you can find out whether the
primary head has to be opened and then flushed
out or neutralized are obtainable from Krohne on
request.)

• to enclose a certificate with the flowmeter
confirming that the flowmeter is safe to handle
and stating the liquid used. Krohne regret that
they cannot service your flowmeter unless
accompanied by such a certificate.

02/2001

ALTOFLUX 2W

43