Levitronix LEVIFLOW LFS Series User manual

User Manual for LEVIFLOW®LFS Flowmeters
www.levitronix.com
PL-4502-00, Rev11, DCO# 18-107
First Release: 29-May-09
Last Update: 30-Jul-18
LEVIFLOW®LFS FLOWMETERS
USER MANUAL
LEVIFLOW®Sensors: LFS-04(H), -08(H), -20(H), -50(H), -80(H) (LFS-Series)
LFS-008 (Low-Flow Sensor)
LEVIFLOW®Converters: LFC-1C (single channel, LFS-Series without LFS-008)
LFC-1C-F4 (single channel, LFS-008 only)
LFC-6C (6-channel, LFS-Series without LFS-008)
LFC-6CIO (6-channel, I/O interface, LFS-Series)
This manual contains information necessary for the safe and proper use of the LEVIFLOW®LFS flowmeter series.
Included are specifications for the standard configuration, components, and instructions regarding its use, installation,
operation, adjustment, inspection and maintenance. For special configuration of the LEVIFLOW®flowmeters refer to
accompanying information. If the flowmeters have to be configured for other parameter settings then the LEVIFLOW®
Configuration Software (see relevant manual Levitronix

Doc.# PL-4501-00) is necessary. Please familiarize yourself
with the contents of this manual to ensure the safe and effective use of this product. After reading, please store the
manual where the personnel responsible for operating can readily refer to it at any time.

User Manual for LEVIFLOW®LFS Flowmeters
www.levitronix.com
PL-4502-00, Rev11, DCO# 18-107
2
Table of Contents
1SAFETY PRECAUTIONS ..........................................................................................................................................3
2SPECIFICATIONS .....................................................................................................................................................4
2.1 Component Overview........................................................................................................................................4
2.2 Standard System Configurations.......................................................................................................................6
2.2.1 Single Channel Configuration –LFS-Series .....................................................................................................................6
2.2.2 Multi-Channel Configuration –LFS-Series........................................................................................................................6
2.3 Specifications of Sensors ..................................................................................................................................8
2.4 Specifications of Converters..............................................................................................................................9
2.4.1 General Specifications .....................................................................................................................................................9
2.4.2 Overview of Parameter Configuration.............................................................................................................................10
2.5 Basic Dimensions of Main Components..........................................................................................................11
2.5.1 Dimensions of Sensors ..................................................................................................................................................11
2.5.2 Dimensions of Converters..............................................................................................................................................12
2.5.3 Dimensions of Adaptor Cables.......................................................................................................................................13
3INSTALLATION.......................................................................................................................................................14
3.1 Installation of Converters LFC-1C and LFC-1C-F4..........................................................................................14
3.1.1 Overview and Preparation..............................................................................................................................................14
3.1.2 Instructions for Electrical Installation...............................................................................................................................15
3.1.3 Configuration of Sensor Specific Data............................................................................................................................15
3.1.4 Instructions for Mechanical Installation...........................................................................................................................16
3.2 Installation of Converters LFC-6C and LFC-6CIO ...........................................................................................17
3.2.1 Overview and Preparation..............................................................................................................................................17
3.2.2 Instructions for Electrical Installation...............................................................................................................................19
3.2.3 Configuration of Sensor Specific Data............................................................................................................................19
3.2.4 Instructions for Mechanical Installation...........................................................................................................................20
3.3 Installation of Sensors .....................................................................................................................................21
3.3.1 Overview and Preparation..............................................................................................................................................21
3.3.2 Instructions for Electrical Installation...............................................................................................................................21
3.3.3 Instructions for Mechanical and Hydraulic Installation.....................................................................................................22
4OPERATION............................................................................................................................................................23
4.1 General Timing Specifications.........................................................................................................................23
4.1.1 Startup Time ..................................................................................................................................................................23
4.1.2 Thermal Stability Time....................................................................................................................................................23
4.1.3 Zero Adjustment Activation Time....................................................................................................................................23
4.1.4 Automatic Zero Adjustment duration...............................................................................................................................23
4.2 System Operation with LFC-1C / LFC-1C-F4..................................................................................................24
4.2.1 Standard Operation with PLC Interface ..........................................................................................................................24
4.2.2 Typical Setups Using the PLC Interface .........................................................................................................................24
4.2.3 Operation with RS485....................................................................................................................................................25
4.2.4 Standalone Operation with Display.................................................................................................................................25
4.2.5 Display Messages..........................................................................................................................................................26
4.3 System Operation with Converter LFC-6C and LFC-6CIO..............................................................................27
4.3.1 Standard Operation with PLC Interface (LFC-6CIO only)................................................................................................27
4.3.2 Operation with RS485....................................................................................................................................................27
4.3.3 Standalone Operation with Display.................................................................................................................................27
4.3.4 Display Messages..........................................................................................................................................................27
4.4 Operation with LEVIFLOW®Configuration Software .......................................................................................27
5INSPECTION AND MAINTENANCE .......................................................................................................................28
6TROUBLESHOOTING.............................................................................................................................................29
6.1 Common Troubles...........................................................................................................................................29
6.2 Troubleshooting with LEVIFLOW®Configuration Software..............................................................................29
7TECHNICAL SUPPORT ..........................................................................................................................................29
8APPENDIX...............................................................................................................................................................30
8.1 Regulatory Status............................................................................................................................................30
8.1.1 CE Marking....................................................................................................................................................................30
8.2 Symbols and Signal Words..............................................................................................................................31

User Manual for LEVIFLOW®LFS Flowmeters
www.levitronix.com
PL-4502-00, Rev11, DCO# 18-107
3
1 Safety Precautions
CAUTION
Do not under any circumstances open the converter or sensor housing.
Levitronix does not assume responsibility for any damage, which
occurs under such circumstances.
!
WARNING
Hazardous voltage may be present.
In case of the usage of an inadequate AC/DC power supply, mains
voltages may be present (even if the system is designed for 24VDC).
The converter must be placed in a spill protected environment. Do not
under any circumstances open the powered converter.
The usage of galvanic separated 3rd party tested (like CE and/or UL)
AC/DC supply is highly recommended.
!
WARNING
Toxic chemicals may be present.
When using the flowmeter to measure chemicals skin contact and toxic
gases may be hazardous to your health. Wear safety gloves and other
appropriate safety equipment.

User Manual for LEVIFLOW®LFS Flowmeters
www.levitronix.com
PL-4502-00, Rev11, DCO# 18-107
4
2 Specifications
2.1 Component Overview
Figure 1: Standard LEVIFLOW®LFS flow sensors
Figure 2: Standard LEVIFLOW®LFC converters
Figure 3: LEVIFLOW®accessories
2
1c
3
5
1e
1g
1i
1k
9a
6b
7a
7b
3
4
2
2c
7a
7b
4a
4b
8
1d
1f
6a
9b
9c

User Manual for LEVIFLOW®LFS Flowmeters
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PL-4502-00, Rev11, DCO# 18-107
5
Pos.
Part Name
Part #
Shape
Flow
Fitting
(Tube)
Max. Liquid
Temperat.
Cable
Connector
Note
1a
LFS-008-Z / LFS-008-U
100-30323 / 100-30324
Z / U
0 –0.8 lpm
1/4”
90 °C
FEP
0.5 m
PVDF male
connector
cover
Sensor specific
parameter for
converter calibration
are delivered on a tag
attached to the
flowsensor.
1b
LFS-04-Z-T025 / LFS-04-U-T025
100-30321 / 100-30322
Z / U
0 –4 lpm
1/4”
90 °C
1c
1d
LFS-04-Z / LFS-04-U
LFS-04H-Z / LFS-04H-U
100-30304 / 100-30305
100-30330 / 100-30331
Z / U
0 –4 lpm
3/8”
90 °C
180 °C
1e
1f
LFS-08-Z / LFS-08-U
LFS-08H-Z / LFS-08H-U
100-30306 / 100-30307
100-30332 / 100-30333
Z / U
0 –8 lpm
3/8”
90 °C
180 °C
1g
1h
LFS-20-Z / LFS-20-U
LFS-20H-Z / LFSH-20-U
100-30308 / 100-30309
100-30372 / 100-30373
Z / U
0 –20 lpm
1/2”
90 °C
180 °C
1i
1j
LFS-50-Z / LFS-50-U
LFS-50H-Z / LFS-50H-U
100-30310 / 100-30311
100-30340 / 100-30341
Z / U
0 –50 lpm
3/4”
90 °C
180 °C
1k
1l
LFS-80-Z / LFS-80-U
LFS-80H-Z / LFS-80H-U
100-30312 / 100-30313
100-30342 / 100-30343
Z / U
0 –80 lpm
1”
90 °C
180 °C
Table 1: Standard flow sensor models
Pos.
Article Name
Part #
Description
Interfaces
2a
(with 2c)
LFC-1C
100-30314
Single Channel Converter
(Interface connector 2c included)
Analog Output (4 –20 mA), 2x Digital Output, 1x Digital Input, RS485 (MODBUS)
Note: LFC-1C-F4 works with LFS-008 only.
2b
(with 2c)
LFC-1C-F4
100-30325
3
LFC-6C
100-30315
6-Channel Converter
- RS485 (MODBUS)
- Order Bus Conn. (7a) and Terminat. Box (7b) as separate article (see Table 3)
Note: Does not work with LFS-008 sensor.
4
(with 4a
and 4b)
LFC-6CIO
100-30337
6-Channel Converter
with I/O Interfaces
(Digital I/O connector 4a and analog output
connector 4b included)
- RS485 (MODBUS) protocol
- 6 analog outputs (4 –20 mA), 6 digital inputs, 6 digital outputs
- Order Bus Conn. (7a) and Terminat. Box (7b) as separate article (see Table 3)
- EMI ferrite (8) to be ordered as separate article (see Table 3)
Table 2: Standard converters
Pos.
Article Name
Part #
Features
Special Feature
5a
LFE-A.1-10
LFE-A.1-30
LFE-A.1-60
190-10162
190-10163
190-10164
Cable length: 1 m, PVC
Cable length: 3 m, PVC
Cable length: 6 m, PVC
- PP female connector cover for IP-65 chemical protection
- Flame retardant PVC white (UL VW-1 corresponds to EN-60332-1-2)
5b
LFE-A.2-10
LFE-A.2-30
LFE-A.2-60
190-10165
190-10166
190-10167
Cable length 1 m, FEP
Cable length 3 m, FEP
Cable length 6 m, FEP
- PP female connector cover for IP-65 chemical protection
6a
LFE-D.1-10
LFE-D.1-30
LFE-D.1-60
190-10296
190-10297
190-10298
Y cable, 1 m, PVC, cover
Y cable, 3 m, PVC, cover
Y cable, 6 m, PVC, cover
For lFC-6CIO with protective SMB connector PP cover.
6b
LFA-A.1
190-10268
Y adaptor cable, PVC
For LFC-6CIO
7a
Connector Box for LFC-6C
100-30316
COMBICON connector
For wiring RS485 and supply of stacks of LFC-6C and LFC-6CIO converters.
7b
Termination Box for LFC-6C
100-30317
--
For termination of RS485 bus of LFC-6C and LFC-6CIO.
8
LeviFlow Splitting Ferrite
100-30353
EMI filtering of DC supply
For LFC-6CIO supply needed.
9
USB to RS485 Adaptor-TR
Isolated YN-485I-TR
100-30392
Structure/Design
USB connector (9a) with termination resistor and cable with connector pair (9b
and 9c) for external RS485 wire connection. Isolated. Cable length is 2m.
Purpose
Communication over fieldbus of driver with PC
Table 3: Accessories
Pos.
Part Name
Part #
Flow
Range
Fitting
(Tube)
Max. Liquid
Temperat.
Cable
Note
9a
LFS-008-Z + LFC-1C-F4
LFS-008-U + LFC-1C-F4
100-90625
100-90626
0 –0.8 lpm
1/4"
90 °C
FEP
0.5m
Converter is delivered with sensor
specific parameters already stored.
Extension cables to be ordered as
separate article with specified length
(see Table 3).
9b
LFS-04-Z-T025+LFC-1C
LFS-04-U-T025+LFC-1C
100-90627
100-90628
0 –4 lpm
1/4"
90 °C
9c
LFS-04-Z+LFC-1C
LFS-04-U+LFC-1C
LFS-04H-Z+LFC-1C
LFS-04H-U+LFC-1C
100-90604
100-90605
100-90630
100-90631
0 –4 lpm
3/8”
90 °C
90 °C
180 °C
180 °C
9d
LFS-08-Z+LFC-1C
LFS-08-U+LFC-1C
LFS-08H-Z+LFC-1C
LFS-08H-U+LFC-1C
100-90606
100-90607
100-90812
100-90813
0 –8 lpm
3/8”
90 °C
90 °C
180 °C
180 °C
9e
LFS-20-Z+LFC-1C
LFS-20-U+LFC-1C
LFS-20H-Z+LFC-1C
LFS-20H-U+LFC-1C
100-90608
100-90609
100-90835
100-90836
0 –20 lpm
1/2”
90 °C
90 °C
180 °C
180 °C
9f
LFS-50-Z+LFC-1C
LFS-50-U+LFC-1C
LFS-50H-Z+LFC-1C
LFS-50H-U+LFC-1C
100-90621
100-90622
100-90802
100-90714
0 –50 lpm
3/4”
90 °C
90 °C
180 °C
180 °C
9g
LFS-80-Z+LFC-1C
LFS-80-U+LFC-1C
LFS-80-Z+LFC-1C
LFS-80-U+LFC-1C
100-90623
100-90624
100-90715
100-90716
0 –80 lpm
1”
90 °C
90 °C
180 °C
180 °C
Table 4: Flowmeter sets –flowsensor with single channel converter LFC-1C/LFC-1C-F4

User Manual for LEVIFLOW®LFS Flowmeters
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PL-4502-00, Rev11, DCO# 18-107
6
2.2 Standard System Configurations
2.2.1 Single Channel Configuration –LFS-Series
Figure 4: Flowmeter configuration with LFC-1C single channel converter
(For LFS-008 flow sensor special LFC-1C-F4 converter is necessary)
2.2.2 Multi-Channel Configuration –LFS-Series
Figure 5: Flowmeter configuration with LFC-6C converter (6 channel)
(Does not work with LFS-008 flow sensor)
LEVIFLOW® Converter LFC-1C
(Single Channel)
4-Digit Display
Zero Adjustment
Adress Setting for RS485
Piezo Transducers
In-/Output
IN OUT Electrical Interface
Power Supply: 24 VDC
RS485 (MODBUS)
- Configuration with PC Software
- Data Reading
- Fieldbus Array of Multiple Sensors
Analog and Digital Outputs
- 1x Analog Output
- 2x Digital Outputs
- 1x Digital Input
LEVIFLOW® Sensor LFS-xx
Flow In
Flow Out
Extension
Cables LFE
Digital
Signal Processor
DSP
LEVIFLOW® Converter LFC-6C
(6-Channel)
4-Digit Display
Zero Adjustment
Address Setting for RS485
Piezo Transducers In-/Output
Signal/Power Bus Connector
Power Supply: 24 VDC
RS485 (MODBUS)
- Configuration with PC Software
- Data Reading
Digital
Signal Processor
DSP
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
2
1
3
1
5
5

User Manual for LEVIFLOW®LFS Flowmeters
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PL-4502-00, Rev11, DCO# 18-107
7
Figure 6: Flowmeter configuration with LFC-6CIO converter (6 channel with I/O interfaces)
LEVIFLOW® Converter LFC-6CIO
(6-Channel with I/O Signals)
4-Digit Display
Zero Adjustment
Address Setting for RS485
Piezo Transducers In-/Output
Signal/Power Bus Connector
Power Supply: 24 VDC
RS485 (MODBUS)
- Configuration with PC Software
- Data Reading
Digital
Signal Processor
DSP
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
Flowsensor LFS
Analog Output
Connector
Digital I/O
Connector
Analog Outputs:
6 Channels
Digital Outputs:
6 Channels
Digital Inputs:
6 Channels
EMI
Ferrite
4
8
1
5
6
4b
4a

User Manual for LEVIFLOW®LFS Flowmeters
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PL-4502-00, Rev11, DCO# 18-107
8
2.3 Specifications of Sensors
Sensor Type
Characteristics
LFS-008
LFS-04(H)
LFS-08(H)
LFS-20(H)
LFS-50(H)
LFS-80(H)
Flow Range [lpm]
0 –0.8
0 –4
0 –8
0 –20
0 –50
0 –80
Fitting Tube Size (OD)
1/4”
1/4” or 3/8”
3/8”
1/2”
3/4”
1”
Measurement Path ID in [mm]
2.5
4
6
10
15
20
Accuracy
Flow Velocity < 1 m/s
Flow Range [lpm]
0 –0.035
0 –0.8
0 –1.7
0 –4.7
0 –10.6
0 –18.8
Accuracy [lpm]
see Figure 7
± 0.008
± 0 –0.017
± 0.047
± 0.106
± 0.188
Repeatability [lpm]
see Figure 7
< 0.004
< 0.009
< 0.024
< 0.053
< 0.094
Accuracy
Flow Velocity > 1 m/s
Flow Range [lpm]
0.035 –0.8
0.8 –4
1.7 –8
4.7 –20
10.6 –50
18.8 –80
Accuracy of Reading
± 1%
± 1%
± 1%
± 1%
± 1%
± 1%
Repeatability of Read.
< 0.5%
< 0.5%
< 0.5%
± 0.5%
± 0.5%
± 0.5%
Wetted Surface Area [cm2]
38.3
59.0 (for 3/8”)
61.7
87.5
155.9
233.1
Weight [g]
97
97
95
115
150
180
Pressure Drop Coefficient C
 P = C x Q2 ,
Q = Flow [lpm],  P = Press. Drop [kPa]
16.8
1.80 for 3/8”
5.41 for 1/4”
0.88
0.06
0.01
0.003
Maximum Fluid Pressure at 20 / 90 °C in [bar]
5 / 5
5 / 5
5 / 4.1
5 / 4.1
5 / 4.1
5 / 4.1
Fluid Temperature
Normal range: 10 –90 0C ( 50 –194 0F )
For LFS-xxH (high-temp version): 10 - 180 0C (50 - 356 0F)
Ambient Temperature
0 –60 0C (32 - 140 0F)
Kinematic Viscosity
0.8 –40 mm2/s (0.8 –40 cSt)
Sound Speed
1000 –2200 m/s
Wet Materials
PFA
Sensor Enclosure Classification
IP-65
Cable Jacket Material
FEP (PVC on request and at minimum order quantities)
Standard Cable Length
0.5m with extension cables for length variation
(other length on request and at minimum order quantities)
Electrical Connectors
SMB with protective PVDF cover (male with O-Ring, IP-65 protection)
Table 5: Specifications of sensors
(All data based on water at 20 oC)
Figure 7: Repeatability and accuracy specification for LFS-008 sensor
0%
1%
2%
3%
4%
5%
6%
7%
8%
9%
10%
110 100 1000
[mlpm]
Accuracy of Reading
Repeatability of Reading for LFS-008
Full Scale Change Line
Full Scale = 35 mlpm
Full Scale = 800 mlpm

User Manual for LEVIFLOW®LFS Flowmeters
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PL-4502-00, Rev11, DCO# 18-107
9
2.4 Specifications of Converters
2.4.1 General Specifications
Characteristics
Single Channel Converter Types LFC-1C and LFC-1C-F4
Power Supply Voltage / Current / Inrush Current
24 VDC ± 10% / 150 mA / Peak 1.8 A within 100 µs
Ambient Temp / Humidity Range
0 –50 °C (32 –122 °F) / 30 - 85% R.H. (no condensation)
Enclosure Classification and Material
IP-20 (indoor use), ABS
Interfaces
(see Figure 10 for detailed PIN designation and electrical
specification)
- RS485 -> MODBUS protocol -> max. array of 99 channels
- 1x Analog Output: 4 –20mA (0 –20mA configurable)
- 2x Digital Outputs: Flow Alarm, Measurement Error, Volume Counter Pulse, Volume Counter
Alarm, Flow as Frequency or Bubble Detection, Custom Output (default: normally open)
- 1x Digital Input: Volume Counter Reset or Zero Adjust
- 4 Digit display (flow rate, volume counter, error codes), re-zero button
- Address potentiometers for RS485 address setting
Configuration Parameters
(Available and configurable with RS485/USB converter and
configuration software)
- Viscosity
- Low Cutoff,
- Dampening time (filter)
- Full scale setting,
- Linearization (15 points)
- Alarm Outputs (High and Low Alarm)
- Volume Counter and Volume Counter Alarm Settings
Weight / Dimensions / Mounting
130 g / 123 x 75 x 17.5 mm / DIN rail
Duration for Activation of Manual and Digital Zeroing
3 sec
Duration of Zeroing Procedure
LFC-1C: normal 6 sec , maximum 15 sec
LFC-1C-F4: normal 26 sec, maximum 60 sec.
Duration of Measurement Ready after Power-On
Warm-Up Time for Full Performance Measurements
10 sec.
30 min.
Table 6: Specifications for single-channel converters LFC-1C and LFC-1C-F4
Characteristics
6-Channel Converter Types LFC-6C and LFC-6CIO
Power Supply Voltage / Current / Inrush Current
LFC-6C : 24 VDC ± 10% / 150 mA / Peak 1.7 within 120 µs
LFC-6CIO : 24 VDC ± 10% / 270 mA / Peak 4.9 within 180 µs
Ambient Temp / Humidity Range
0 –50 °C (32 –122 °F) / 30 - 85% R.H. (no condensation)
Enclosure Classification and Material
IP-20 (indoor use), ABS
Interfaces
(see Table 11 for LFC-6C and Table 11/Table 12/Table 13 for
LFC-6CIO for detailed PIN designation and electrical
specification)
- RS485 -> MODBUS protocol -> max. array of 99 ch.
- Stacking of max. 16 converters -> 5 ms DSP process/time per channel
- 4 Digit display (flow rate, volume counter, error codes), re-zero button
- Address potentiometers for RS485 address setting
For LFC-6CIO only:
- 6x Analog Outputs: 4 –20mA (0 –20mA configurable)
- 6x Digital Outputs: Flow Alarm, Measurement Error, Volume Counter Pulse, Volume Counter
Alarm, Flow as Frequency or Bubble Detection, Custom Output (default: normally open)
- 6x Digital Input: Volume Counter Reset or Zero Adjust
Configuration Parameters
(Available and configurable with RS485/USB converter and
configuration software)
- Viscosity
- Low Cutoff
- Dampening constant (filter)
- Full scale setting
- Linearization (15 points)
- Alarm Outputs (High and Low Alarm)
- Volume Counter and Volume Counter Alarm Settings
Weight / Dimensions / Mounting
LFC-6C: 170 g / 139 x 77 x 17.5 mm / DIN rail
LFC-6CIO: 182 g / 139 x 77 x 18.5 mm / DIN rail
Duration for Activation of Manual and Digital Zeroing
3 sec
Duration of Zeroing Procedure
LFC-6C: normal 15 sec, maximum 30 sec.
LFC-6CIO: normal 26 sec, maximum 60 sec.
Duration of Measurement Ready after Power-On
Warm-Up Time for Full Performance Measurements
10 sec.
30 min.
Table 7: Specifications for multi-channel converters LFC-6C and LFC-6CIO

User Manual for LEVIFLOW®LFS Flowmeters
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PL-4502-00, Rev11, DCO# 18-107
10
2.4.2 Overview of Parameter Configuration
Table 8 shows the standard (“Default”) and possible parameter configurations of the flowmeters. This user
manual is dealing with the standard configuration. For setting up other configurations the LEVIFLOW®
Configuration Software is needed. Consult the “Configuration-SW User Manual” (Levitronix

Doc.# PL-4501-
00) for more detailed description.
Block
Parameter
Option/Range
Default
Note
Basic
Sensor size
LFS-xx
xx = 04, 08, 20, 50, 80, 008
xx = 008,4,8,20,50,80
(accord. Sensor size)
--
Full scale
0.01 –100 L/min
(accord. Sensor size)
Default Values:
LFS-008 = 0.8 L/min, LFS-04 = 4 L/min, LFS-08 = 8 L/min
LFS-20 = 20 L/min, LFS-50 = 50 L/min, LFS-80 = 80 L/min
Damping time
0 –25 s
2 s
Low-pass filter with
T
fdB  =
 21
3
Low cutoff
0.0 –25.0 %
2 %
Flow cut to 0 below this percentage of full-scale
If cutoff 0% is chosen, negative flow becomes visible
Kinematic Viscosity
0.00 –99.99 cSt
1 cSt
Kinematic Visc. = Dynamic Visc. / Density
Display Settings
Displayed Parameter
Flow Value in L/min
Flow Value in mL/min
Volume Counter Value
Flow Value in L/min
Parameter shown in converter display
Measurement Resolution
0 digits (#.)
1 digits (#.#)
2 digits (#.##)
3 digits (#.###)
3 digits (#.###)
Analog output
settings
(Not applicable for
LFC-6C)
Analog output setting
4 –20 mA or
0 –20 mA
4 –20 mA
--
Digital input
settings
(Not applicable for
LFC-6C)
Digital input
Volume counter reset
Zero adjust
Set Volume Counter to zero
Zero adjust
Automates zeroing, when liquid type changes
Digital output
settings
(Not applicable for
LFC-6C)
Digital output 1
Flow alarm High
Flow alarm Low
Vol. counter alarm H
Vol. counter alarm HH
Vol. counter Pulse
Measurement Error
Flow as Frequency
Bubble detect
Custom Output
Flow alarm High
- Upper flow limit detection
- Lower flow limit detection
- Flow volume detection first value (one-time)
- Flow volume detection second value
- Pulse per volume
- Error signal (empty sensor etc.)
- Flow as Frequency output (100% of full-scale = 1 kHz)
- Bubble detected signal
- Bits of equipment status can be OR-ed on the output
Digital output 2
Flow alarm Low
Flow alarm
Hysteresis (Flow alarm)
0 –20 %
0 %
Can be used to get tolerance to noise.
Alarm high
0 –125 %
105 %
Alarm setting In percentage of full-scale.
Contact type
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
For digital outputs of LFC-1C, LFC-1C-F4, LFC-6CIO.
Alarm low
-10 –125 %
-5 %
Alarm setting In percentage of full-scale.
Contact type
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
For digital outputs of LFC-1C, LFC-1C-F4, LFC-6CIO.
Volume counter
settings
Volume counter enable
(activation box)
activated, not activated
not activated
These are settings for volume detection (integration of
flow).
Has to be active for the options “ Vol. Counter Alarm H”,
“Vol. Counter Alarm HH” and “Vol. Counter Pulse”.
Volume counter base unit
1 mL, 1 L, 1 m3
1 mL
Multiplier factor
0.01, 0.1, 10, 100, 1000
0.1
Volume counter pulse length
0.5, 50, 100ms
0.5 ms
Volume counter alarm enable
(activation box)
activated, not activated
not active
-> Settings for one-time volume detection.
-> Volume = “Volume unit” x “Multiplier factor” x “Vol.
Counter Alarm H“ value”
-> Has to be active for the options “Vol. Counter Alarm
H”, “Vol. Counter Alarm HH”.
Value
(Volume counter alarm H)
0 –999999
--
Contact type (H)
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
Value
(Volume counter alarm HH)
0 –999999
--
Contact type (HH)
N.O. = normally open
N.C. = normally closed
N.O. = norm. open
Measurement
Error Settings
Instant Measurement Error
Ignore Time
0-99 s
10s
During this time instant measurement errors are ignored.
If an instant measurement error stays active for longer
time than this time, measurement error arises.
Flow Level on Measurement
Error
0%, -25, 125%
Hold
0 %
Signal level of analog output and flow, when
measurement error arises
Bubble Detection
Settings
Bubble Detect Hold Time
0 –99 s
0 s
For bubble or particle detection in the process
Table 8: Overview of parameters