Fluidwell F173-A-OS User manual

F173-A-OS
LEVEL MONITOR
with linearization, high / low alarms, analog and pulse outputs
Signal input sensor: (0)4-20 mA
Signal outputs: (0)4-20 mA ref. level, height or percentage
Alarm outputs: four level alarms
Options: Modbus communication, and backlight
F-Series - Field mounted indicators for safe and hazardous areas.
More info: www.fluidwell.com/fseries

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SAFETY INSTRUCTIONS
•Any responsibility is lapsed if the instructions and procedures as described in this manual
are not followed.
•LIFE SUPPORT APPLICATIONS: The F173-A-OS is not designed for use in life support
appliances, devices, or systems where malfunction of the product can reasonably be
expected to result in a personal injury. Customers using or selling these products for use
in such applications do so at their own risk and agree to fully indemnify the manufacturer
and supplier for any damages resulting from such improper use or sale.
•Electro static discharge does inflict irreparable damage to electronics! Before installing or
opening the F173-A-OS, the installer has to discharge himself by touching a well-
grounded object.
•The F173-A-OS must be installed in accordance with the EMC guidelines (Electro
Magnetic Compatibility).
•Connect a proper grounding to the metal enclosure as indicated if the F173-A-OS has an
incoming power or signal line which carries a hazardous live voltage.
The Protective Earth (PE) wire may never be disconnected or removed.
DISPOSAL OF ELECTRONIC WASTE
•The WEEE Directive requires the recycling of disposed electrical and electronic
equipment in the European Union. When the WEEE Directive does not apply to your
region, we support its policy and ask you to be aware on how to dispose of this product.
•The crossed out wheelie bin symbol as illustrated and found on our products tells that
this product shall not be disposed of into the general waste system or into a landfill.
•At the end of its life, equipment shall be disposed of according to the local regulations
regarding waste of the electrical and the electronic equipment.
•
helpdesk for information on the product disposal.
SAFETY RULES AND PRECAUTIONARY MEASURES
•The manufacturer accepts no responsibility whatsoever if the following safety rules and
precautions, instructions and the procedures as described in this manual are not
followed.
•Modifications of the F173-A-OS implemented without preceding written consent from the
manufacturer, will result in the immediate termination of product liability and warranty
period.
•Mounting, electrical installation, start-up and maintenance of this device may only be
carried out by trained persons authorized by the operator of the facility. Persons must
read and understand this manual before carrying out its instructions.
•This device may only be operated by persons who are authorized and trained by the
operator of the facility. All instructions in this manual are to be observed.
•Check the mains voltage and information on the manufacturer's plate before installing the
F173-A-OS.
•Check all connections, settings and technical specifications of the various peripheral
devices with the F173-A-OS supplied.
•Open the enclosure only if all leads are free of potential.
•Never touch the electronic components (ESD sensitivity).
•Never expose the system to heavier conditions than allowed according to the
classification of the enclosure (see manufacture's plate and chapter 4.2.).
•If the operator detects errors or dangers, or disagrees with the safety precautions taken,
he should inform the owner or principal responsible.
•The local labor and safety laws and regulations must be adhered to.

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ABOUT THE MANUAL
This manual is divided into two main sections:
▪The daily use of the unit is described in chapter 2 "Operation". These instructions are meant for
users.
▪The following chapters and appendices are exclusively meant for electricians/technicians. These
provide a detailed description of all software settings and hardware installation guidance.
This manual describes the standard unit as well as the available options. For additional information,
please contact your supplier.
A hazardous situation may occur if the F173-A-OS is not used for the purpose it was
designed for or is used incorrectly. Please carefully note the information in this manual
indicated by the pictograms:
A "warning !" indicates actions or procedures which, if not performed correctly, may lead to
personal injury, a safety hazard or damage of the F173-A-OS or connected instruments.
A "caution !" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the F173-A-OS or connected instruments.
A "note !" indicates actions or procedures which, if not performed correctly, may indirectly
affect operation or may lead to an instrument response which is not planned.
WARRANTY AND TECHNICAL SUPPORT
For warranty and technical support for your products, please contact your supplier, visit our internet
site www.fluidwell.com or contact us at sup[email protected].
Hardware version : 03.01.xx
Software version : 03.05.xx
Manual : FW_F173-A-OS_M_v2201-01_EN.docx
© Copyright 2023 : Fluidwell B.V. - the Netherlands
Information in this manual is subject to change without prior notice. The
manufacturer is not responsible for mistakes in this material or for incidental
damage caused as a direct or indirect result of the delivery, performance or
use of this material.
© All rights reserved. No parts of this publication may be reproduced or used
in any form or by any means without written permission of your supplier.

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TABLE OF CONTENTS
SAFETY INSTRUCTIONS.................................................................................................................... 2
DISPOSAL OF ELECTRONIC WASTE............................................................................................... 2
SAFETY RULES AND PRECAUTIONARY MEASURES ................................................................... 2
ABOUT THE MANUAL ........................................................................................................................ 3
WARRANTY AND TECHNICAL SUPPORT........................................................................................ 3
TABLE OF CONTENTS....................................................................................................................... 4
1INTRODUCTION........................................................................................................................ 6
1.1 System description........................................................................................................... 6
2OPERATIONAL ......................................................................................................................... 8
2.1 General information.......................................................................................................... 8
2.2 Control panel.................................................................................................................... 8
2.3 Operator information and functions.................................................................................. 8
3CONFIGURATION ................................................................................................................... 10
3.1 Introduction..................................................................................................................... 10
3.2 Programming SETUP-level............................................................................................ 10
3.2.1 Entering SETUP-level........................................................................................10
3.2.2 Navigating through SETUP-level.......................................................................10
3.2.3 Programming sequence.....................................................................................11
3.2.4 Returning to OPERATOR-level.......................................................................... 12
3.3 Configuration settings .................................................................................................... 12
3.3.1 Setup menu - Settings........................................................................................ 12
3.3.2 Menu 1 - Level ................................................................................................... 13
3.3.3 Menu 2 - Height.................................................................................................. 14
3.3.4 Menu 3 Alarm.................................................................................................. 14
3.3.5 Menu 4 - Display................................................................................................ 14
3.3.6 Menu 5 - Power management............................................................................ 15
3.3.7 Menu 6 - Sensor.................................................................................................15
3.3.8 Menu 7 Linearization....................................................................................... 16
3.3.9 Menu 8 - Analog output...................................................................................... 17
3.3.10 Menu 9 - Relays............................................................................................... 18
3.3.11 Menu A - Communication (option) ................................................................... 19
3.3.12 Menu B - Others............................................................................................... 19
4INSTALLATION ....................................................................................................................... 20
4.1 General directions..........................................................................................................20
4.2 Installation - surrounding conditions .............................................................................. 20
4.3 Handling the F-Series Enclosure ................................................................................... 21
4.3.1 Identification.......................................................................................................21
4.3.2 Opening / removing the cover............................................................................ 22
4.3.3 Closing / replacing the cover.............................................................................. 22
4.4 Mechanical installation................................................................................................... 23
4.4.1 Dimensions Aluminum and stainless steel enclosures................................... 23
4.4.2 Dimensions Non-metallic enclosures..............................................................24
4.4.3 Mounting ............................................................................................................ 25
4.5 Electrical installation....................................................................................................... 26
4.5.1 Electrical safety..................................................................................................26
4.5.2 Protective Earth (PE) connections.....................................................................26
4.5.3 Field wiring connections..................................................................................... 27
4.5.4 Power supply wiring ...........................................................................................27
4.5.5 Sensor supply .................................................................................................... 28
4.6 Terminal connectors safe area applications Type XX / XF......................................... 29
4.6.1 Terminal 00-02: Power supply...........................................................................29
4.6.2 Terminal 03-05: Sensor input.............................................................................29
4.6.3 Terminal 08-09: Analog output...........................................................................30
4.6.4 Terminal 10-17: Alarm output R1 to R4............................................................. 30
4.6.5 Terminal 26-31: Type CB / CH / CI - Communication (option) .........................31
5MAINTENANCE....................................................................................................................... 32
5.1 General directions..........................................................................................................32
5.2 Instructions for repair ..................................................................................................... 32
APPENDIX A TECHNICAL SPECIFICATION ................................................................................ 33

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APPENDIX B PROBLEM SOLVING ...............................................................................................36
APPENDIX C COMMUNICATION VARIABLES .............................................................................37
APPENDIX D DECLARATION OF CONFORMITY .........................................................................41
INDEX OF THIS MANUAL..................................................................................................................42
LIST OF FIGURES IN THIS MANUAL...............................................................................................43

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1 INTRODUCTION
1.1 SYSTEM DESCRIPTION
Functions and features
The level monitor model F173-A-OS is a microprocessor driven instrument designed to display and
monitor linearized level and percentage. It can generate up to four alarms and output analog signal
related to the level.
This product has been designed with a focus on:
▪several mounting possibilities with aluminum or GRP enclosures for harsh industrial
surroundings
▪ability to process all types of sensor signals
▪transmitting possibilities with analog and communication outputs.
Sensor input
One sensor with a (0)4-20mA signal output can be connected to the F173-A-OS. To power the
sensor, several options are available.
Standard outputs
▪Four configurable alarm outputs: high-, low-, high-high- or low-low-level alarm.
▪Linear 4-20mA analog output to represent the actual level. The signal limits can be tuned.
Fig. 1: Typical application
Configuration of the unit
The F173-A-OS is designed for use in many types of applications. For that reason, a setup menu is
available to program the F173-A-OS according to your specific requirements.

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The setup includes several important features, such as span, engineering units, signal selection,
power management (to extend battery life-time), etc. All settings are stored in a non-volatile memory
and therefore saved in the event of a power failure or an exhausted battery.
Display information
The unit has a LCD with (optional) backlight to show the process information, status and alarm
messages. The display refresh rate is programmed in the setup menu.
At a key press, the display refresh rate will switch to FAST for 30 seconds. When 'OFF' is selected,
the display goes off after 30 seconds after the last key press. The display temporarily comes on after
a key press.
Options
The following options are available: full Modbus communication RS232/485/TTL, panel mount, wall
mount and weather proof enclosures, flame proof enclosure and LED backlight.

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2 OPERATIONAL
2.1 GENERAL INFORMATION
This chapter describes the daily use of the F173-A-OS. This instruction is meant for users /
operators.
•This device may only be operated by persons who are authorized and trained by the
operator of the facility. All instructions in this manual are to be observed.
•Take careful notice of the "Safety rules, instructions and precautionary measures" in the
front of this manual.
2.2 CONTROL PANEL
The control panel has three keys. The following keys are available:
Fig. 2: Control panel.
Functions of the keys
PROG-key
This key is used to program and save new values or settings.
The PROG-key is also used to gain access to SETUP-level; please read chapter 3.
SELECT-key
This key is used to SELECT the displayed information, like level and height.
CLEAR-key
This key is used to CLEAR values.
2.3 OPERATOR INFORMATION AND FUNCTIONS
In general, the F173-A-OS will always function at Operator level. The information displayed is
dependent upon the SETUP-settings. The signal from the connected sensor is processed by the
F173-A-OS in the background, whichever screen refresh rate setting is chosen. After pressing a key,
the display will be updated very quickly during a 30 second period, after which it will slow-down
again.
Fig. 3: Example of display information during process.
For the Operator, the following functions are available:
▪Display level / height / percentage
This is the main display information of the F173-A-OS. After the selection of any other
information, it will always return to this main display automatically. The displayed information
depends on the configuration setting. When "-------" is shown, the value is too high to be
displayed.
The arrows indicate the increase/decrease of the level trend.

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▪How to program the alarm thresholds
The F173-A-OS can give an alarm message on the display. When set to on, at the same time,
the digital outputs can give a signal for processing by an external device. Note that it is also
possible to set or change the alarm thresholds from the setup menu.
This procedure is applicable to all the alarm thresholds. Only the procedure for ALARM LL is

Action
Result
Remark
1
From any operator page,
press the SELECT/key, to
find the submenu: ALARM LL.
•The submenu shows:
ALARM LL.
-
2
Press the PROG/ENTER key
to access the submenu:
ALARM LL.
•The PROGRAM indicator
blinks continuously.
If you wait too long, the
program mode goes off and
changes are not saved.
3
Use the SELECT/key to
increase the digit. Use the
CLEAR/key to go to the
next number.
•The PROGRAM indicator
blinks continuously.
•You can select the
required alarm threshold.
The 0 (zero) in front of the
number will not show when
the setting is saved.
The alarm is only shown on
the display. For an alarm on
an external device, set the
function of the digital output.
4
Press the PROG/ENTER key
to confirm the selection.
•The PROGRAM indicator
goes off.
•The selection is saved.
•The display shows the
selected alarm threshold.
If you do not press the
PROG/ENTER key to
confirm, your selection is not
saved.
▪Level alarm
When the level is outside the allowed range, an alarm message will be displayed at the bottom
line of the display indicating the type of alarm: LO-LO ALARM, LO ALARM,
HI ALARM or HI-HI ALARM.
The alarm is terminated automatically as soon as the level is in its range again. Due to the setup
configuration it might be that the level is outside its range without an immediate alarm.
▪Clear Alarm outputs
The Operator has the possibility to clear the alarm outputs, e.g. to turn off an alarm bell. This
feature can be enabled individually for each output in SETUP-menu 9. When the clear action is
performed, all enabled outputs that are connected to an active alarm status will be cleared.
To do so, press the CLEAR/key at operator level when the actual measurement value is
shown. The text "CLEAR OUTPUTS" is shown and pressing the CLEAR/key again will clear
the outputs. To avoid a reset at this stage, press any other key or wait for 20 seconds.
Be aware that only the output(s) is cleared; the alarm itself remains available and visible
on the display. When the same or an additional alarm (re-)occurs, the output(s) is
triggered again!
▪Alarm
When the alarm indicator is shown, refer to Appendix B: Problem Solving.

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3 CONFIGURATION
3.1 INTRODUCTION
This and the following chapters are exclusively meant for electricians and non-operators. In these,
an extensive description of all software settings and hardware connections are provided.
•Mounting, electrical installation, start-up and maintenance of this device may only be
carried out by trained persons authorized by the operator of the facility. Persons must
read and understand this manual before carrying out its instructions.
•This device may only be operated by persons who are authorized and trained by the
operator of the facility. All instructions in this manual are to be observed.
•Make sure, the measuring system is correctly wired up according to the wiring diagrams.
Protection against accidental contact is no longer assured when the enclosure cover is
removed or the panel cabinet has been opened (danger from electrical shock). The
enclosure may only be opened by trained persons authorized by the operator of the
facility.
•Take careful notice of the "Safety rules, instructions and precautionary measures" in the
front of this manual.
3.2 PROGRAMMING SETUP-LEVEL
Changing the settings of the F173-A-OS may have an influence on the current operation of
the device, even when SETUP-level is still active.
Make sure that the unit is not being used for any application when altering the settings.
3.2.1 ENTERING SETUP-LEVEL
Configuration of the F173-A-OS is done at SETUP-level, which can be reached at all times while the
F173-A-OS remains fully operational. At SETUP-level the display will deactivate the RUN indicator
and activate the SETUP indicator.
Use the control panel to access SETUP-level
PROG-key
To enter SETUP-level, press the PROG-key for 7 seconds at OPERATOR-level.
During this time, the symbols  will be displayed.
When SETUP-level is entered, a password might be required to continue. You can
enter the password by following the procedure for programming values as described in
the following paragraphs.
A password may be required to enter SETUP.
Without this password access to SETUP is denied.
3.2.2 NAVIGATING THROUGH SETUP-LEVEL
Each function has a unique menu-number, which is displayed below the SETUP indicator at the
bottom of the display. The menu-number is a combination of two figures, e.g. 1.2. The first number
indicates the function-group and the second number indicates the function. Additionally, each
function and function-group is expressed with a keyword.
Fig. 4: SETUP matrix structure
1.1
1.2
2.1.
2.1
1.3
2.2
3.1
3.
FUNCTION GROUP
FUNCTION
FW-4100-000001-001-EN

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Use the control panel to navigate through SETUP-level
PROG-key
When a function is selected, this key is used to start the programming sequence.
When only a function group is selected (and no function), this key is used to scroll back
a function group (e.g. 3 →2 →1 →3).
SELECT-key
This key is used to select the next function in the list (e.g. 1 →1.1 →1.2 →1). When
the top of the list is reached, it will wrap around and return to the function group
selection.
CLEAR-key
This key is used to select the previous function in the list (e.g. 1.2 →1.1 →1 →2).
When the bottom of the list is reached, it will return to the function group selection.
When only a function group is selected (and no function), this key is used to scroll to
the next function group. (e.g. 1 →2 →3 →1).
3.2.3 PROGRAMMING SEQUENCE
After selecting a function at SETUP-level, a new value can be programmed using the control panel.
A function either contains a value (a number with optionally a decimal point, e.g. 123.45) or a list
with items (e.g. Disable Enable).
For each function that needs to change, navigate to that function and follow the steps indicated
below. During the programming sequence, the display will deactivate the SETUP indicator and
activate the PROGRAM indicator.
When programming new values, alterations will only be set after the PROG-key has been
pressed to confirm the new value! (STEP 3)
Step 1: Starting the programming sequence
PROG-key
When a function is selected at SETUP-level, this key is used to start the programming
sequence.
Step 2a: Changing a value
SELECT-key
This key is used to increment the selected digit.
When the entered value is out of range, the increase sign or decrease-sign will
be displayed while you are programming. If this value is confirmed by pressing the
PROG-key, the value will be brought within a valid range automatically.
CLEAR-key
This key is used to select the next digit. If a decimal point can be set, this will be
included in the sequence as well (e.g. [decimal point] →digit 1 →digit 2→digit 3 →
[decimal point].
SELECT-key + CLEAR-key
The combination of the SELECT-key and CLEAR-key is used to select a negative
value. When a value can also be entered as a negative number, pressing the SELECT-
key and CLEAR-
Step 2b: Changing the selected item in a list
SELECT-key
This key is used to select the next item in the list (e.g. Disable →Enable).
At the end of the list, the selection will wrap around to the first selection.
CLEAR-key
This key is used to select the previous item in the list (e.g. Enable →Disable ).
At the bottom of the list, the selection will wrap around to the last selection.
Step 3: Finishing the programming sequence
PROG-key
During the programming sequence, this key is used to confirm the new value and
return to SETUP-level. To cancel the operation, either press the PROG-key for 3
seconds or wait for 20 seconds: the programming sequence is cancelled and the
former value is reinstated.

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3.2.4 RETURNING TO OPERATOR-LEVEL
When all settings are configured correctly, the unit can be returned to OPERATE-level.
Please keep a record of all settings for later reference.
Use the control panel to return to OPERATE-level
PROG-key
In order to return to the operator level, press the PROG-key for three seconds.
When no keys are pressed for 2 minutes, SETUP-level will be left automatically.
3.3 CONFIGURATION SETTINGS
All settings of the F173-A-OS can be set via the control panel.
The following paragraphs give a detailed description of each setting.
3.3.1 SETUP MENU - SETTINGS
SETUP FUNCTIONS AND VARIABLES
1
LEVEL
1.1
UNIT
L; m3; kg; lb; GAL; USGAL; bbl; no unit
1.2
DECIMALS
0000000; 111111.1; 22222.22; 3333.333
1.3
SPAN
0.000001 - 9999999
1.4
DECIMALS SPAN
0 - 6
1.5
OFFSET
-999,999 - +999,999
2
HEIGHT
2.1
UNIT
mm - cm - m - mtr - inch - ft - mmwk - mmwc - cmwk - cmwc - mwk - mwc - inwc - ftwc
- mbar - bar - psi - no unit.
2.2
DECIMALS
0, 1, 2
2.3
SPAN
0.000001 - 999,999
2.4
DECIMALS SPAN
0 - 6
2.5
OFFSET
-999,999 - +999,999
3
ALARM
3.1
INPUT
level –height - percentage
3.2
EMPTY
default –no relays - ignore
3.3
ALARM LO-LO
-999,999 - +999,999
3.4
ALARM LO
-999,999 - +999,999
3.5
ALARM HI
-999,999 - +999,999
3.6
ALARM HI-HI
-999,999 - +999,999
3.7
DELAY LO-LO
0.0 - 999.9 sec
3.8
DELAY LO
0.0 - 999.9 sec
3.9
DELAY HI
0.0 - 999.9 sec
3.A
DELAY HI-HI
0.0 - 999.9 sec
4
DISPLAY
4.1
ALARM SET
operator; setup; hidden; off
4.2
FUNCTION
level, level and height, level and percentage, height, height and percentage,
percentage
4.3
LIGHT
0% (off); 20%; 40%; 60%; 80%; 100% (full brightness)
4.4
BL ALARM
off; on; flash
5
POWER MANAGEMENT
5.1
LCD NEW
fast; 1 sec; 3 sec; 15 sec; 30 sec; off
5.2
BATTERY MODE
operational; shelf
6
SENSOR
6.1
FILTER
01 –99
6.2
CUT-OFF
0.0 –99.9%
6.3
CALIB-LO
default, calibrate, calibrate set
6.4
CALIB-HI
default, calibrate, calibrate set
7
LINEARIZATION
7.1
% / M-FACTOR 1
0.00% - 99.99% / 0.000001 –9.999999
7.2
% / M-FACTOR 2
0.00% - 99.99% / 0.000001 –9.999999
7..
...
...
7.F
% / M-FACTOR 15
0.00% - 99.99% / 0.000001 –9.999999
7.G
LINEARIZATION
enable; disable

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8
ANALOG
8.1
OUTPUT
disable; enable
8.2
INPUT
level, height, percentage
8.3
LEVEL-MIN
-999,999 –999,999
8.4
LEVEL-MAX
-999,999 –999,999
8.5
CUT-OFF
0.0 - 9.9%
8.6
TUNE-MIN
0 - 9999
8.7
TUNE-MAX
0 - 9999
8.8
FILTER
01 - 99
9
RELAYS
9.1
RELAY TEST
disable, all off, all on, relay 1, relay 2, relay 3, relay 4
9.2
RELAY 1
off; lo-lo; lo; hi; hi-hi; all
9.3
RELAY 2
off; lo-lo; lo; hi; hi-hi; all
9.4
RELAY 3
off; lo-lo; lo; hi; hi-hi; all
9.5
RELAY 4
off; lo-lo; lo; hi; hi-hi; all
9.6
CLEAR 1
disable - enable
9.7
CLEAR 2
disable - enable
9.8
CLEAR 3
disable - enable
9.9
CLEAR 4
disable - enable
A
COMMUNICATION
A.1
MODE
bus-rtu; bus-asc; off
A.2
SPEED
1200; 2400; 4800; 9600; 9600HP; 19200; 38400; 57600
A.3
DATABITS
8 bits, 7 bits
A.4
PARITY
none, even, odd
A.5
ADDRESS
1 - 247
A.6
TRANSMIT DELAY
0 –255 ms
B
OTHERS
B.1
MODEL
F173-A-OS
B.2
SOFTWARE VERSION
nn:nn:nn
B.3
SERIAL NO.
nnnnnnn
B.4
PASSWORD
0000 - 9999
B.5
TAG-NR
0000000 - 9999999
3.3.2 MENU 1 - LEVEL
1
LEVEL
1.1
UNIT
Select the engineering unit for the indication of the level and alarm values.
When you change the engineering unit, you must recalculate and
reprogram the span also. The calculation is not done automatically.
1.2
DECIMALS
This setting is used to set the amount of digits behind the decimal point for
the level indication.
1.3
SPAN
With the span, the sensor signal is converted to a level. The span for level
is based on the engineering unit (Setup 1.1) and the level at 20 mA (or max
signal). Enter the span with the decimals (decimals are not shown yet and
are set in Setup 1.4). The more accurate the span, the more accurate the
functioning of the system will be.
Example 1: Calculating the Span.
Assume that the sensor generates 20 mA at a level of 652.31 USGAL, the
selected unit is USGAL. Enter for the span: "065231" and for the span
decimals "2".
Example 2: Calculating the Span.
Assume that the sensor generates 20 mA at a level of 2,481.3 Liters, and
the selected unit is "m3". The level at 20 mA is 2.4813 m3.
Enter for the span: "024813" and for the span decimals "4".
1.4
DECIMALS SPAN
This setting is used to set the number of digits behind the decimal point for
the span.
1.5
OFFSET
Enter the level at minimum sensor signal ((0)4 mA).Note: a negative level
may be entered by pressing middle and right buttons simultaneously.

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3.3.3 MENU 2 - HEIGHT
2
HEIGHT
2.1
UNIT
This setting is used to select the engineering unit for the indication of the
height.
Alteration of the engineering unit will have consequences for operator and
setup values, they will not be automatically recalculated to the value of the
new selected unit. The span has to be adapted as well; the calculation is
not done automatically.
2.2
DECIMALS
This setting is used to set the number of digits behind the decimal point for
the height indication.
2.3
SPAN
With the span, the sensor signal is converted to a height. The span for
height is determined on the basis of the selected measurement unit at
20mA (or maximum signal). Enter the span in whole numbers (decimals
are set with SETUP 2.4).
The more accurate the span, the more accurate the functioning of the
system will be.
2.4
DECIMALS SPAN
This setting is used to set the number of digits behind the decimal point for
the span.
2.5
OFFSET
Enter the height at minimum sensor signal ((0)4 mA). Note: a negative
height may be entered by pressing middle and right buttons simultaneously
3.3.4 MENU 3 ALARM
3
ALARM
3.1
INPUT
The alarm function can be set to monitor level, height or percentage.
3.2
EMPTY
DEFAULT
NO RELAY
IGNORE
It is possible to disable monitoring for low and low-low alarm at minimum
sensor signal (0)4 mA, 0% or below offset. The following settings can be
selected for handling the case of low level alarm at minimum sensor signal:
•Alarm output is switched and alarm status is indicated on the display
•Alarm output is NOT switched but alarm status is displayed
•Alarm output is NOT switched and alarm status is NOT displayed
3.3
ALARM LL
Sets the threshold value for the various alarms. Value 0.0 disables the
alarm. Alarm will be generated as long as the signal is below the set value.
3.4
ALARM LO
3.5
ALARM HI
3.6
ALARM HH
3.7
DELAY LL
Sets the delay time for the various alarms. When an alarm condition is
valid after the delay time, an alarm is generated.
3.8
DELAY LO
3.9
DELAY HI
3.A
DELAY HH
3.3.5 MENU 4 - DISPLAY
4
DISPLAY
4.1
ALARM SET
OPERATOR
SETUP
HIDDEN
OFF
Determines where alarm level can be set.
•Alarm can be set at OPERATOR level and at SETUP level
•Alarm can only be set at SETUP level
•Alarm levels cannot be displayed at OPERATOR level
•Alarm is switched off
4.2
FUNCTION
LEVEL
LEVEL - HEIGHT
LEVEL –PERC.
HEIGHT
HEIGHT –PERC.
PERCENTAGE
Selects the information to be displayed.
•Only level is displayed (with large digits, top line)
•As LEVEL but with height displayed on bottom line
•As LEVEL but with percentage of level on bottom line
•Only height is displayed (with large digits, top line)
•As HEIGHT but with percentage of level on bottom line
•Only percentage of level is displayed (large digits, top line).
4.3
LIGHT
The backlight brightness can be adjusted from 0% (off) to 100% (full
brightness) in steps of 20%.
4.4
BL ALARM
Sets the backlight functionality during alarm condition. With setting ON,
backlight is red during alarm. With setting FLASH backlight flashes
red/white during alarm.

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3.3.6 MENU 5 - POWER MANAGEMENT
5
POWER MANAGEMENT
5.1
LCD NEW
Sets the display refresh rate. Whenever a key is pressed, the display
refresh rate 
set rate. When 'OFF' is selected, the display temporarily comes on after a
key press and it will go off after 30 seconds after the last key press.
The calculation of the display-information influences the power
consumption significantly. When the application does not require a fast
display refresh rate, it is strongly advised to select a slow rate.
Please note that no information will be lost at low refresh rates: all sensor
input will be processed in the background.
5.2
BATTERY MODE
The F173-A-OS has two modes: operational or shelf.
After "shelf" has been selected, the F173-A-OS can be stored for several
years; it will not process the sensor signal; the display is switched off but all
settings are stored.
To wake up the F173-A-OS again, press the SELECT/key two times.
3.3.7 MENU 6 - SENSOR
6
SENSOR
6.1
FILTER
The analog output signal of a sensor represents the actual level. This
signal is measured several times a second. The value measured is a
"snap-shot" of the real level as it will be fluctuating.
With the help of this digital filter a stable and accurate reading can be
obtained while the filter level can be set to a desired value.
The filter principle is based on three input values: the filter level (01-99),
the last measured analog value and the last average value. The higher the
filter level, the longer the response time on a value change will be.
FILTER VALUE
RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE (% OF END VALUE)
50%
75%
90%
99%
01
filter disabled
filter disabled
filter disabled
filter disabled
02
0.3
0.5
1.0
1.8
03
0.5
1.0
1.5
3
05
1.0
1.8
2.8
5.3
10
1.8
3.5
5.6
11
20
3.5
7.0
11
23
30
5.3
10
17
34
50
8.8
17
29
57
75
13
26
43
86
99
17
34
57
114
6.2
CUT-OFF
To ignore small signals, f.i. from vibration, a low signal cut-off can be set as
percentage over the full range of 16mA (or 20mA). When the analog value
is less than the programmed percentage, the level will be set to zero. The
cut-off value can be programmed in the range of 0.0 - 99.9%.
SPAN
SETUP 1.3
REQUIRED
CUT-OFF
CUT-OFF
SETUP 6.2
REQUIRED OUTPUT
450 L
25 L
25/450 x 100% = 5.5%
16 mA x 5.5% + 4 mA = 4.88 mA

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6.3
CALIB LO
This setting is used to calibrate the input value for (0)4mA as the signal
from the sensor might not be exact 4.0 mA (or 0.0 mA) at minimum signal.
This function will set the sensor signal at minimum signal.
Be very sure that the offered signal is correct before the calibration is
executed as this function has major influences on the accuracy of the
system!
CALIB
DEFAULT
CAL SET
After pressing PROG, three settings can be selected.
The input will be calibrated with the actual "(0)4mA" value. After pressing
enter, CAL SET will be shown as soon as the calibration is completed.
From that moment, the analog value must be more than the calibrated
value before the signal will be processed.
Re-installs the factory value.
Selects the last calibrated value.
6.4
CALIB HI
This setting is used to calibrate the input value for 20 mA as the signal from
the sensor might not be exact 20.0 mA at maximum signal. This function
will set the sensor signal at maximum signal.
Be very sure that the offered signal is correct before the calibration is
executed as this function has major influences on the accuracy of the
system!
CALIB
DEFAULT
CAL SET
After pressing PROG, three settings can be selected.
The input will be calibrated with the actual "20 mA" value. After pressing
enter, CAL SET will be shown as soon as the calibration is completed.
From that moment, the analog value must be lower than the calibrated
value for reliable measurement.
Re-installs the factory value.
Selects the last calibrated value.
3.3.8 MENU 7 LINEARIZATION
The linearization function is available to correct for the tank shape, to approach the real fill level of
the tank at any height, beyond the general span setting. A maximum of 15 linearization-positions can
be entered while the interpolation will calculate any other position in-between.
For each linearization position, the signal as percentage of full scale (20 mA) and a Meter Factor
(MF) must be entered. The Meter Factor MF at a certain point is defined as
MF =
proper level
sensed level
Linearization applies to level and percentage, not to height.
Example
In this example span is set at 4250 L, signal is calibrated on 4-20 mA. Offset is zero.
Linearization point 1
Quantity present is 695.9 L, sensor signal is 5.60 mA.
5.60 mA is (5.60 4.00) / (20.00 4.00) x 100% = 10% of full scale signal.
10% of span is 4250 x 10% = 425.0 L.
Thus, MF1 is 695.9 / 425.0 = 1.636471
Linearization point 2
Quantity present is 1195.3 L, sensor signal is 8.11 mA.
8.11 mA is (8.11 4.00) / (20.00 4.00) = 25.69 % of full scale signal.
25.69% of span is 4250 x 25.69% = 1091.7 L.
Thus, MF2 is 1195.3 / 1091.7 = 1.094898
Linearization point 3
Quantity present is 2635.0 L, sensor signal is 14.88 mA.
14.88 mA is (14.88 4.00) / (20.00 4.00) = 68.00 % of full scale signal.
68.00% of span is 4250 x 68.00% = 2890.0 L.
Thus, MF2 is 2635.0 / 2890.0 = 0.911765

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7
LINEARIZATION
7.1
..
7.F
% / M-FACTOR 1
..
% / M-FACTOR 15
The percentage of the linearization point is displayed at the bottom of the
display. A value of 0% disables the linearization point.
The M-factor is displayed at the top of the display.
MF has to be between 0.000001 and 9.999999. Please note that the
decimal dot is fixed after the first digit, and is not displayed.
7.G
LINEARIZATION
Enables or disables the linearization function.
3.3.9 MENU 8 - ANALOG OUTPUT
A linear 4-20 mA signal output signal is generated that represents the level. The settings for level
influence the analog output directly. The relationship between level and the analog output is set with
the following settings.
8
ANALOG OUTPUT
8.1
OUTPUT
If the analog output is not used, select disable to minimize the power
consumption (e.g. save battery life-time).
Option AP: When a power supply is available but the output is disabled, a
3.5 mA signal will be generated.
8.2
INPUT
Sets the source for the analog output: level, height or percentage of full
scale input signal.
8.3
MINIMUM OUT
Enter the input signal at which the output should generate the minimum
signal (0)4 mA or 0 V - in most applications at (0)4 mA sensor signal.
8.4
MAXIMUM OUT
Enter the input signal at which the output should generate the maximum
signal (20 mA or 10 V) - in most applications at 20 mA sensor signal.
8.5
CUT-OFF
A low level cut-off can be set as a percentage of the full range of 16 mA, 20
mA or 10 V.
When the signal is less than the cut-off value, the output current will be the
minimum signal (4 mA, 0 mA, 0 V). Examples:
MIN OUT
SETUP 7.3
MAX OUT
SETUP 7.4
CUT-OFF
SETUP 7.5
REQUIRED LEVEL
OUTPUT
0 L
100 L
2%
(100-0)*2% = 2.0 L
4+(16*2%) = 4.32 mA
20 L
800 L
3.5%
(800-20)*3.5%= 27.3 L
4+(16*3.5%)=4.56 mA

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8.6
TUNE-MIN
The (0)4 mA or 0 V value can be tuned precisely with this setting. The
initial minimum analog output value is (0) 4mA or 0 V. However, this value
might differ slightly due to ambient influences such as temperature for
example.
Before tuning the signal, make sure that the analog signal is idle (not
used) for any application!
After pressing PROG, the current will be about 4 mA (0 mA or 0 V). The
current can be increased / decreased with the arrow keys and is directly
active. Press ENTER to store the new value.
If required, you can program the analog output 'up-side-down'. The (0)4
mA or 0 V represents the maximum level and the 20 mA or 10 V
represents the minimum level.
8.7
TUNE-MAX
The 20 mA or 10 V value can be tuned precisely with this setting. The initial
maximum analog output value is 20 mA or 10 V However, this value might
differ slightly due to ambient influences such as temperature for example.
Before tuning the signal, make sure that the analog signal is idle (not
used) for any application!
After pressing PROG, the current will be about 20 mA or 10 V. The current
can be increased / decreased with the arrow keys and is directly active.
Press ENTER to store the new value.
If required, you can program the analog output 'up-side-down'. The (0)4
mA or 0 V represents the maximum level and the 20 mA or 10 V
represents the minimum level.
8.8
FILTER
This setting is used to stabilize the output signal. With the help of this
digital filter a more stable but less actual representation of the level can be
obtained.
The filter principle is based on three input values: the filter level (01-99),
the last calculated level and the last average value. The higher the filter
level, the longer the response time on an input step change will be.
FILTER VALUE
RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE (% OF END VALUE)
50%
75%
90%
99%
01
filter disabled
filter disabled
filter disabled
filter disabled
02
0.1 sec
0.2 sec
0.4 sec
0.7 sec
03
0.2 sec
0.4 sec
0.6 sec
1.2 sec
05
0.4 sec
0.7 sec
1.1 sec
2.1 sec
10
0.7 sec
1.4 sec
2.2 sec
4.4 sec
20
1.4 sec
2.8 sec
4.5 sec
9.0 sec
30
2.1 sec
4 sec
7 sec
14 sec
50
3.5 sec
7 sec
11 sec
23 sec
75
5.2 sec
10 sec
17 sec
34 sec
99
6.9 sec
14 sec
23 sec
45 sec
3.3.10 MENU 9 - RELAYS
The outputs are configurable, they can be set to a specific alarm output or to off (energy saving
when not used).
9
RELAYS
9.1
RELAY TEST
Normal function of the outputs can be overridden for a short period. This
function is typically used during installation.
Selecting an output immediately switches the selected output on.
DISABLE testing is disabled, normal functioning of outputs resumed
ALL OFF all outputs are switched off
ALL ON all outputs are switched on
RELAY 1/2/3/4 output 1, 2, 3 or 4 is switched on.
After testing, select DISABLE to restore normal functioning. When SETUP
is left or the device is restarted, this setting is automatically set to default
DISABLE.

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9.2
RELAY 1
Couples one or all alarms to output R1. See also SETUP 3.3 to 3.6
9.3
RELAY 2
Couples one or all alarms to output R2. See also SETUP 3.3 to 3.6
9.4
RELAY 3
Couples one or all alarms to output R3. See also SETUP 3.3 to 3.6
9.5
RELAY 4
Couples one or all alarms to output R4. See also SETUP 3.3 to 3.6
Clearing the alarm status of the outputs may be allowed in Operator mode. The following settings
enable or disable the clearing of alarms in Operator mode.
Clearing an alarm switches off the related output while the alarm status is still present. The alarm
indication on the display will not be cleared. In case an alarm reoccurs the output will be switched on
again.
See Clear Alarm outputs on page 11 for an instruction how to clear alarms in Operator mode.
9.6
CLEAR 1
Enables or disables clearing the alarm status of R1, in Operator mode.
9.7
CLEAR 2
Enables or disables clearing the alarm status of R2, in Operator mode.
9.8
CLEAR 3
Enables or disables clearing the alarm status of R3, in Operator mode.
9.9
CLEAR 4
Enables or disables clearing the alarm status of R4, in Operator mode.
3.3.11 MENU A - COMMUNICATION (OPTION)
The F173-A-OS can optionally be equipped with a communication interface using the Modbus
protocol (Type CB/CH/CI/CT). Please consult Appendix C for a more detailed explanation of the
protocol, data types and available registers.
A
COMMUNICATION
A.1
MODE
Sets the Modbus communication mode of your device on the
communication bus.
The following modes can be selected: ASCII RTU OFF
A.2
SPEED
This setting is used to set the baud rate and should match the speed used
on the communications bus.
The following communication speeds can be selected:
1200 2400 4800 9600 9600HP 19200 38400 57600
A.3
DATABITS
Sets the number of databits. Select 8 for BUS-RTU and 7 or 8 for BUS-
ASC.
A.4
PARITY
Select a parity bit as required by connected equipment.
A.5
ADDRESS
This setting is used to configure the bus address of your device on the
communications bus. This address can vary from 001-247.
A.6
TRANSMIT DELAY
Sets an additional delay between receiving a Modbus message and
transmitting the reply.
The transmit delay allows drivers to switch between transmitting and
receiving, such as RS485. The delay can vary from 0-255 msec and is set
to 15ms by default.
3.3.12 MENU B - OTHERS
B
OTHERS
B.1
MODEL
For support and maintenance it is important to have information about the
characteristics of the F173-A-OS. Your supplier will ask for this information
in the case of a serious breakdown or to assess the suitability of your
model for upgrade considerations.
B.2
SOFTWARE
VERSION
B.3
SERIAL NO.
B.4
PASSWORD
All SETUP values can be password protected.
This protection is disabled with value 0000 (zero).
A 4 digit password can be programmed, for example 1234.
B.5
TAG-NR
For identification of the unit and communication purposes, a unique tag
number of maximum 7 digits can be entered.

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4 INSTALLATION
4.1 GENERAL DIRECTIONS
•Mounting, electrical installation, start-up and maintenance of this device may only be
carried out by trained persons authorized by the operator of the facility. Persons must
read and understand this manual before carrying out its instructions.
•The F173-A-OS may only be operated by persons who are authorized and trained by the
operator of the facility. All instructions in this manual are to be observed.
•Ensure that the measuring system is correctly wired up according to the wiring diagrams.
Protection against accidental contact is no longer assured when the enclosure cover is
removed or the panel cabinet has been opened (danger from electrical shock). The
enclosure may only be opened by trained personnel.
•Take careful notice of the "Safety rules, instructions and precautionary measures" at the
front of this manual.
The F1-Series can be supplied as suitable for Safe Area or Hazardous Area. This is indicated in the
model code (shown on the product label) by the Type X* designator, with following options:
•Type XX: Suitable for safe area applications only (e.g. F173-A-OS-XX)
Follow the mechanical and electrical installation instructions shown in chapter 4.
•Type XF: Suitable for explosion proof / flame proof applications (e.g. F173-A-OS-XF)
Follow the electrical installation instructions as shown in chapter 4 and
the mechanical installation instructions of the enclosure that are supplied separately.
4.2 INSTALLATION - SURROUNDING CONDITIONS
Take the relevant IP classification of the
enclosure into account (see identification plate).
Even an enclosure rated for IP67 / TYPE 4(X)
should NEVER be exposed to strongly varying
(weather) conditions.
When used in very cold surroundings or varying
climatic conditions, inside the instrument case,
take the necessary precautions against moisture.
Mount the F-Series onto a solid structure to avoid
vibrations.
For use in Safe Areas (or Locations), the following conditions apply:
Relative humidity:
< 90% RH
Outdoor use:
suitable for outdoor use
IP and TYPE rating:
IP65 (panel mount), IP67 (field mount) and Type 4X
Supply voltage fluctuation:
As indicated by the supply range (e.g. 10V to 30V),
otherwise +/- 10% unless stated otherwise
Means of protection:
Ordinary locations:
Class I (PE connected metal enclosure)
Class II (non-metallic enclosure)
Over-voltage category:
II (when supplied from mains)
Pollution degree:
2 (internal environment), 3 (external environment)
Ambient:
Ordinary locations:
-40 °C to +80 °C, -40 °F to +176 °F
Altitude:
up to 2000 m