Fluidwell F170-A-OS User manual

F170-A-OS
LEVEL MONITOR
WITH HIGH / LOW LEVEL ALARMS
Signal input sensor: (0)4-20mA
Signal outputs: 4-20mA ref. level
Alarm outputs: maximum four level alarms
Options: Modbus communication
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 F170-A 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 unit, the installer has to discharge himself by touching a well-grounded
object.
This unit must be installed in accordance with the EMC guidelines (Electro Magnetic
Compatibility).
Do connect a proper grounding to the aluminum casing as indicated if the F170-A has
been supplied with the 115-230V AC power-supply type PM. The green / yellow wire
between the back-casing and removable terminal-block may never be removed.
DISPOSAL
At the end of its life this product should be disposed of according to local regulations regarding
waste electronic equipment. If a battery is present in this product it should be disposed of
separately. The separate collection and recycling of your waste equipment will help to conserve
natural resources and ensure that it is recycled in a manner that protects the environment.
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 F170-A-OS implemented without preceding written consent from the
manufacturer, will result in the immediate termination of product liability and warranty period.
Installation, use, maintenance and servicing of this equipment must be carried out by authorized
technicians.
Check the mains voltage and information on the manufacturer's plate before installing the unit.
Check all connections, settings and technical specifications of the various peripheral devices
with the F170-A-OS supplied.
Open the casing 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 casing
classification (see manufacture's plate and chapter 4.2.).
If the operator detects errors or dangers, or disagrees with the safety precautions taken, then
inform the owner or principal responsible.
The local labor and safety laws and regulations must be adhered to.

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ABOUT THE OPERATION MANUAL
This operation manual is divided into two main sections:
The daily use of the unit is described in chapter 2 "Operation". This instruction is meant for
users.
The following chapters and appendices are exclusively meant for electricians/technicians. These
provide an extensive description of all software settings and installing the hardware.
This operation manual describes the standard unit as well as most of the options available. For
additional information, please contact your supplier.
A hazardous situation may occur if the F170-A-OS is not used for the purpose it was
designed for or is used incorrectly. Please carefully note the information in this operating
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 destruction of the F170-A-OS or connected instruments.
A "caution" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect function of the F170-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.
Hardware version : 02.01.xx
Software version : 02.05.xx
Manual : HF170AEN_OS_v0501_04
© Copyright 2011 : Fluidwell bv - 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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CONTENTS MANUAL
Safety instructions ........................................................................................................................................... 2
Disposal .................................................................................................................................................... 2
Safety rules and precautionary measures ....................................................................................................... 2
About the operation manual ............................................................................................................................ 3
Contents manual.............................................................................................................................................. 4
1. Introduction ................................................................................................................................. 5
1.1. System description of the F170-A-OS ................................................................................... 5
2. Operational.................................................................................................................................. 7
2.1. General .................................................................................................................................. 7
2.2. Control panel.......................................................................................................................... 7
2.3. Operator information and functions ....................................................................................... 8
3. Configuration............................................................................................................................. 10
3.1. Introduction .......................................................................................................................... 10
3.2. Programming SETUP-level.................................................................................................. 10
3.2.1. General ................................................................................................................................ 10
3.2.2. Overview functions SETUP level ......................................................................................... 13
3.2.3. Explanation SETUP-functions.............................................................................................. 14
1 - Level .......................................................................................................................... 14
2 - Height ........................................................................................................................ 15
3 - Alarm ......................................................................................................................... 16
4 - Display ....................................................................................................................... 16
5 - Power management .................................................................................................. 17
6 - Sensor ....................................................................................................................... 17
7 - Analog output............................................................................................................. 19
8 - Relay output............................................................................................................... 20
9 - Communication (optional).......................................................................................... 20
A - Others........................................................................................................................ 21
4. Installation ................................................................................................................................. 22
4.1. General directions................................................................................................................ 22
4.2. Installation / surrounding conditions .................................................................................... 22
4.3. Dimensions- Enclosure ........................................................................................................ 23
4.4. Installing the hardware......................................................................................................... 25
4.4.1. Introduction .......................................................................................................................... 25
4.4.2. Voltage selection sensor supply .......................................................................................... 26
4.4.3. Terminal connectors ............................................................................................................ 27
4.4.4 Communication And Backlight Connector ........................................................................... 30
6. Maintenance.............................................................................................................................. 31
6.1. General directions................................................................................................................ 31
6.2. Repair................................................................................................................................... 31
Appendix A: Technical specification .............................................................................................................. 32
Appendix B: Problem solving......................................................................................................................... 35
Appendix C: Communication variables.......................................................................................................... 36
Index of this manual....................................................................................................................................... 38
List of figures in this manual .......................................................................................................................... 38
Notes .................................................................................................................................................. 39

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1. INTRODUCTION
1.1. SYSTEM DESCRIPTION OF THE F170-A-OS
Functions and features
The level indicator model F170-A-OS is a microprocessor driven instrument designed to display the
level and percentage as well as monitoring the level with three alarm values for a low-low, low, high
and high-high level. This product has been designed with a focus on:
ultra-low power consumption to allow long-life battery powered applications (option PB),
intrinsic safety for use in hazardous applications (option XI),
several mounting possibilities with ABS or aluminum enclosures for harsh industrial
surroundings,
ability to process all types of level signals,
transmitting possibilities with analog, alarm relay and communication option outputs.
Sensor input
This manual describes the unit with one analog 4-20mA input for the level sensor "-A version". Other
versions are available to process 0-10V or resistance signals.
To power the sensor, several options are available.
Standard outputs
Configurable alarm outputs: four NO relay contact outputs. The functionality of the output can be
user defined.
Configurable passive linear 4-20mA analog output with 10-bits resolution mirroring the actual
level. The minimum and maximum signal output can be tuned.
Fig. 1: Typical application for the F170-A-OS.

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Configuration of the unit
The F170-A-OS was designed to be implemented in many types of applications. For that reason, a
SETUP-level is available to configure your F170-A-OS according to your specific requirements.
SETUP includes several important features, such as Span, measurement units, signal settings etc.
All setting as are stored in EEPROM memory and will not get lost in case of power break-down or
empty battery.
To extend the battery-life time (option), please make use of the power-management functions as
described in chapter 3.2.3.
Display information
The unit has a large transflective LCD with all kinds of symbols and digits to display measuring units,
status information, trend-indication and key-word messages.
Options
Following options are available: isolated or active 4-20mA / 0-10V / 0-20mA analog output, full
Modbus communication RS232/485 (also battery powered), mechanic relays or active outputs,
sensor supply options and power supply options, including loop power (see the “170-A-PL” manual).
Enclosures include panel-mount, wall-mount, weather-proof and flame proof enclosure.
Important
The number of alarm outputs is related to the options ordered:
Standard: three outputs
option PF - with 24 V AC/DC mains supply: three outputs
option PM - with 80-230V mains supply: three outputs
option XI - Intrinsically safe: two outputs
option OS - relay board with 24V AC/DC mains supply: four relays.

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2. OPERATIONAL
2.1. GENERAL
The F170-A-OS may only be operated by personnel 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.
This chapter describes the daily use of the F170-A-OS. This instruction is meant for users /
operators.
2.2. CONTROL PANEL
The following keys are available:
Fig. 2: Control Panel.
Functions of the keys
This key is used to program and save new values or settings.
It is also used to get access to SETUP-level; please read chapter 3.
This key is used to SELECT other display information or to increase a value.
The arrow-key is used to configure the unit; please read chapter 3.
This key is used to SELECT other display information or to select a digit.
The arrow-key is used configure the unit; please read chapter 3.

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2.3. OPERATOR INFORMATION AND FUNCTIONS
In general, the F170-A-OS will always act function at Operator level. The information displayed is
dependant up on the SETUP-settings. The sensor signal will be measured by the F170-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:
This is the main display information of the F170-A-OS. After selecting any other information, it
will always return to this main display automatically. The level, percentage or height can be
displayed with 17mm digits on the upper line. On the bottom line, the measuring unit will be
displayed or the percentage or height.
When "-------" is shown, then the level value is too high to be displayed.
The arrows indicate the increase/decrease of the level trend.
After pressing select, a second window is available with percentage or contents (depending
on the setup configuration).
Programming the high / low level alarm values:
Remark: this function might not be accessible: it depends on the configuration of the unit..
When the SELECT-key is pressed a few times, the alarm values for low and high level will be
displayed. To change the alarm value, following procedure must be execute:
1) press PROG: the word "PROGRAM" will be flashing,
2) use to select the digits and to increase that value,
3) set the new alarm value by pressing ENTER.
Fig. 4: Example display information during programming maximum level.
When data is altered but ENTER has not been pressed yet, then the alteration can still be
cancelled by waiting for 20 seconds or by pressing ENTER for a few seconds: the former
value will be reinstated.

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Level alarm:
When the actual 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 LEVEL ", "HI LEVEL" or
"HI-LO LEVEL".
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 it’s range without an immediate alarm.
Low-battery alarm:
When the battery voltage drops, it must be replaced. At first "low-battery" will flash, but as
soon as it is displayed continuously, the battery MUST be replaced shortly after! Only official
batteries may be used, or else the guarantee will be terminated. The remaining lifetime after
the first moment of indication is generally several days up to some weeks.
Fig. 5: Example of low-battery alarm.
Alarm 01-04:
When "alarm" is displayed, please consult 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 the instrument may only
be carried out by trained personnel authorized by the operator of the facility. Personnel
must read and understand this Operating Manual before carrying out its instructions.
The F170-A-OS may only be operated by personnel 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. The housing may only be opened by trained personnel.
Take careful notice of the " Safety rules, instructions and precautionary measures " in
the front of this manual.
3.2. PROGRAMMING SETUP-LEVEL
3.2.1. GENERAL
Configuration of the F170-A-OS is done at SETUP-level. SETUP-level is reached by pressing the
PROG/ENTER key for 7 seconds; at which time, both arrows will be displayed. In order to return
to the operator level, PROG will have to be pressed for three seconds. Alternatively, if no keys are
pressed for 2 minutes, the unit will exit SETUP automatically.
SETUP can be reached at all times while the F170-A-OS remains fully operational.
Note: A password may be required to enter SETUP. Without this password access to SETUP is
denied.
To enter SETUP-level:

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Matrix structure SETUP-level:
SCROLLING THROUGH SETUP-LEVEL
Selection function-group and function:
SETUP is divided into several function groups and functions.
Each function has a unique number, which is displayed below the word "SETUP" at the bottom of
the display. The number is a combination of two figures. The first figure indicates the function-group
and the second figure the function. Additionally, each function is expressed with a keyword.
After selecting a sub-function, the next main function is selected after scrolling through all "active"
sub-functions (e.g. 1, 11, 12, 13, 14, 1, 2, 3, 31 etc.).

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To change or a select a value or value:
To change a value, use to select the digits and to increase that value.
To select a setting, both and can be used.
When the new value is not valid, the increase signor decrease-signwill be displayed while you
are programming.
When data is altered but ENTER is not pressed, then the alteration can still be cancelled by waiting
for 20 seconds or by pressing ENTER for three seconds: the PROG-procedure will be left
automatically and the former value reinstated.
Note: alterations will only be set after ENTER has been pressed!
To return to OPERATOR-level:
In order to return to the operator level, PROG will have to be pressed for three seconds. Also, when
no keys are pressed for 2 minutes, SETUP will be left automatically.

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3.2.2. OVERVIEW FUNCTIONS SETUP LEVEL
SETUP FUNCTIONS AND VARIABLES
1 LEVEL
11 UNIT mL - L - m3 - mg - g - kg - ton - GAL - bbl - lb - cf - REV -
no unit
12 DECIMALS 0 - 1 - 2 - 3 (Ref: displayed value)
13 SPAN 0.000001 - 999,999 unit
14 DECIMALS SPAN 0 - 6
15 OFFSET -999,999 - +999,999 units
2 HEIGHT
21 UNIT m - mm - cm - mtr - inch - ft - mmwk - mmwc - cmwk -
cmwc - mwk - mwc - inwc - ftwc - mbar - bar - psi - no
unit.
22 DECIMALS 0 - 1 - 2 (Ref: displayed value)
23 SPAN 0.01 to 999,999 unit
24 DECIMALS SPAN 0 - 6
25 OFFSET -999,999 to +999,999 unit
3 ALARM
31 EMPTY default - no relays - ignore
32 ALARM LOW-LOW -999.999 – 999.999 unit
33 ALARM LOW -999.999 – 999.999 unit
34 ALARM HIGH -999.999 – 999.999 unit
35 ALARM HIGH-HIGH -999.999 – 999.999 unit
36 DELAY ALARM low-low 0.1 - 999.9 seconds
37 DELAY ALARM LOW 0.1 - 999.9 seconds
38 DELAY ALARM HIGH 0.1 - 999.9 seconds
39 DELAY ALARM high-high 0.1 - 999.9 seconds
4 DISPLAY
41 ALARM SET operator - setup - hidden - off
42 FUNCTION level - level+height - level+percentage - height -
height+percentage, percentage
5 POWER MANAGEMENT
51 LCD UPDATE fast - 1 sec - 3 sec - 15 sec - 30 sec - off
52 BATTERY MODE operational - shelf
6 SENSOR
61 FORMULA interpolation, square root
61 FILTER 00 - 99
62 CUT-OFF 0.0 - 99.9%
63 CALIBRATE LOW (0)4mA
64 CALIBRATE HIGH 20mA
7 ANALOG
71 OUTPUT disable - enable
72 INPUT level – height - percentage
73 (0)4mA (0V) 0000.000 - 9,999,999
74 20mA (10V) 0000.000 - 9,999,999
75 CUT-OFF 0.0 - 9.9%
76 TUNE MIN - 4mA / 0V 0 - 9,999
77 TUNE MAX- 20mA / 10V 0 - 9,999
78 FILTER 00 - 99
8 RELAYS
81 OUTPUT R1 low-low - low - high - high-high - all - off
82 OUTPUT R2 low-low - low - high - high-high - all - off
83 OUTPUT R3 low-low - low - high - high-high - all - off
84 OUTPUT R4 low-low - low - high - high-high - all - off
9 COMMUNICATION
91 SPEED / BAUDRATE 1200 - 2400 - 4800 - 9600
92 ADDRESS 1 - 255
93 MODE RTU – off
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A OTHERS
A1 MODEL AND TYPE F170-A
A2 SOFTWARE VERSION xx.xx.xx
A3 SERIAL NO. xxxxxxx
A4 PASSWORD 0000 - 9999
A5 TAGNUMBER 0000000 - 9999999
3.2.3. EXPLANATION SETUP-FUNCTIONS
1 - LEVEL
MEASUREMENT UNIT
11
SETUP - 11 determines the measurement unit for level.
The following units can be selected:
mL - L - m3 - mg - g - kg - ton - GAL - bbl - lb - cf - REV - no unit -
scf - Nm3 - NL - P.
Alteration of the measurement unit will have consequences for operator
and SETUP-level values.
Please note that the Span has to be adapted as well; the calculation is not
done automatically.
DECIMALS
12
This setting determines for level the number of digits following the decimal
point. The following can be selected:
00000 - 1111.1 - 2222.22 - 3333.333
SPAN
13
With the span, the sensor signal is converted to a quantity.
The span for level is determined on the basis of the selected
measurement unit at 20mA.
Enter the span in whole numbers (decimals are set with SETUP 14).
The more accurate the span, the more accurate the functioning of the
system will be.
Example 1 Calculating the span for level
Let us assume that the sensor generates 20mA at a level
of 2,481.3 Liters, the selected unit is "Liters".
The span is 2481.3
Enter for SETUP - 13: "24813" and for SETUP - 14 -
decimals span "1".
Example 2 Calculating the span for level
Let us assume that the sensor generates 20mA at a level
of 652.31 USGAL, the selected unit is USG.
The span is 652.31. Enter for SETUP - 13: "652.31 and
for SETUP - 14 "2".
DECIMALS SPAN
14
This setting determines the number of decimals for Span
(SETUP 13). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
OFFSET
15
Enter here the "not measured" quantity which is below the sensor, in case
a pressure transducer e.g. is used to measure the quantity.
A negative offset can be entered by pressing the middle and right button
simultaneously.

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2 - HEIGHT
If desired the height of the level column can be calculated and displayed.
MEASUREMENT UNIT
21
SETUP 21 determines the measurement unit for height.
The following units can be selected:
mm - cm - m - mtr - inch - ft - mmwk - mmwc - cmwk - cmwc
mwk - mwc - inwc - ftwc - mbar - bar - psi - no unit.
Alteration of the measurement unit will have consequences for operator
and SETUP-level values.
Please note that the Span (23) has to be adapted as well; the calculation
is not done automatically.
DECIMALS
22
This setting determines for height the number of digits following the
decimal point. The following can be selected:
00000 - 1111.1 - 2222.22
SPAN
23
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.
The more accurate the span, the more accurate the functioning of the
system will be :
Example Calculating the span for height
Let us assume that the sensor generates 20mA at a level
of 2,481.3 cm, the selected unit is "cm".
The span is 2481.3
Enter for SETUP - 23: "2481.3".
DECIMALS SPAN
24
This setting determines the number of decimals for Span
(SETUP 13). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
OFFSET
25
Enter here the "not measured" height which is below the sensor, in case a
pressure transducer is used for example to measure the level.
Also, a negative offset can be entered: do press the middle and right
button simultaneously.

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3 - ALARM
With these settings, it is determined how the level will be monitored and the functionality of the
transistor / relay outputs be determined.
Please be aware that the alarm levels are based on the displayed values and can be programmed
at operator level as well (see setup 4 – “display”). Moreover, the function be locked (setup 32–35).
Note: for transistor / relay output functions: read SETUP 8 “relays”.
EMPTY
31
When the level is zero, then it is possible to ignore or disable the level
monitoring. The following settings can be selected:
DEFAULT: in case of a low-level alarm and level zero, it will switch
the alarm output and indicate the alarm on the display.
NO RELAY: in case of a low-level alarm and level zero, it won't switch
the alarm output but will indicate the alarm on the display
only.
IGNORE: in case of a low-level alarm and level zero, it won't switch
the alarm output and nothing will be indicated on the
display.
ALARM VALUE
LOW - LOW
32
The low-low alarm is set with this setting. An alarm will be generated as
long as the level is lower as this value.
With value -999999 this function is disabled. (A negative value can be
entered by pressing the middle and right button simultaneously.)
ALARM VALUE
LOW
33
The low alarm is set with this setting. An alarm will be generated as long
as the level is lower as this value.
With value -999999 this function is disabled. (A negative value can be
entered by pressing the middle and right button simultaneously.)
ALARM VALUE
HIGH
34
The high alarm is set with this setting. An alarm will be generated as long
as the level is higher as this value.
With value 999999 this function is disabled.
ALARM VALUE
HIGH - HIGH
35
The high-high alarm is set with this setting. An alarm will be generated as
long as the level is higher as this value.
With value 999999 this function is disabled.
DELAY TIME ALARM
LOW - LOW
36
An alarm generated by SETUP 32 “low-low” can be ignored during X-time
period. If the actual level is still incorrect after this delay time, then an
alarm will be generated.
DELAY TIME ALARM
LOW
37
An alarm generated by SETUP 33 “low” can be ignored during X-time
period. If the actual level is still incorrect after this delay time, then an
alarm will be generated.
DELAY TIME ALARM
HIGH
38
An alarm generated by SETUP 34 “high” can be ignored during X-time
period. If the actual level is still incorrect after this delay time, then an
alarm will be generated.
DELAY TIME ALARM
HIGH - HIGH
39
An alarm generated by SETUP 35 “high-high” can be ignored during X-
time period. If the actual level is still incorrect after this delay time, then an
alarm will be generated.
4 - DISPLAY
ALARM SET
41
With this function the functionality for the operator is determined:
Operator: the operator can change the alarm values
Setup: the operator can only read the alarm values
Hidden: the alarm values are not visible for the operator
Off: alarm is disabled
FUNCTION
42
With the function, the displayed information is selected:
Level main info: level
Level + height main info: level, bottom line height
Level + percent main info: level, bottom line percentage
Height main info: height
Height + percent main info: height, bottom line percentage
Percentage main info: percentage
Important: this selection does influence the alarm values: the alarm
values are linked to the main info displayed!!

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5 - POWER MANAGEMENT
When used with the internal battery option, the user may hold the concern of reliable measurement
over a long period of time. The F170-A-OS has several smart power management functions to
extend the battery life time significantly. Two of these functions can be set:
LCD NEW
51
The calculation of the display-information influences the power
consumption significantly. When the application does not require a fast
display update, it is strongly advised to select a slow refresh-rate.
Please understand that NO information will be lost; the signal will be
processed and the output-signals will be generated in the normal way.
The following can be selected:
Fast - 1 sec - 3 sec - 15 sec - 30 sec - off.
Example 3: Battery life-time
battery life-time with FAST update: about 1 years.
battery life-time with 1 sec update: about 3 years.
Note: after a button has been pressed by the operator - the display
refresh-rate will always be FAST during 30 seconds. When "OFF" is
selected, the display will be switched-off after 30 seconds and will be
switched-on as soon as a button has been pressed.
BATTERY-MODE
52
The unit has two modes: operational or shelf.
After "shelf" has been selected, the unit can be stored for several years; it
will not process the signal, the display is switched-off but all settings and
totals are stored. In this mode, power consumption is extremely low.
To wake-up the unit again; press the SELECT-key twice.
6 - SENSOR
SIGNAL
61
The F170-A-OS can process the (0)4-20mA signal in two ways:
Interpolation: the signal is processed linear
L = S x I
Square root: for differential pressure
L = S √I
where:
L = Level: the calculated level
S = Span: the maximum flowrate at 20mA. The span is programmed
with setting 14.
I = Input: the scaled analog value; in these formulas value 0 (zero)
for (0)4mA and value 1 (one) for 20mA.
FILTER
62
The analog output signal of a sensor does mirror the actual level. This
signal is measured several times a second by the F170-A-OS. 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 principal 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.
Below, several filter levels with there response times are indicated:
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6 - SENSOR (CONTINUED)
FILTER VALUE RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE.
TIME IN SECONDS
50%INFLUENCE 75%INFLUENCE 90% INFLUENCE 99%INFLUENCE
01 filter disabled filter disabled filter disabled filter disabled
02 0.3 seconds 0.5 seconds 1.0 seconds 1.8 seconds
03 0.5 seconds 1.0 seconds 1.5 seconds 3 seconds
05 1.0 seconds 1.8 seconds 2.8 seconds 5.3 seconds
10 1.8 seconds 3.5 seconds 5.6 seconds 11 seconds
20 3.5 seconds 7.0 seconds 11 seconds 23 seconds
50 8.8 seconds 17 seconds 29 seconds 57 seconds
75 13 seconds 26 seconds 43 seconds 86 seconds
99 17 seconds 34 seconds 57 seconds 114 seconds
CUT-OFF
63
To ignore e.g. vibration, a low-level cut-off can be set as percentage over
the full range of 16mA (or 20mA / 10V). When the analog value is less
then required with this setting, the signal will be ignored.
The cut-off value can be programmed is the range 0.0 - 99.9%.
Examples:
SPAN (setup 13) REQUIRED CUT-OFF CUT-OFF (setup 63) REQUIRED OUTPUT
450 L 25 L 25/450 x 100%=5.5% 16mA x 5.5% + 4mA = 4.88mA
TUNE MIN / 4MA
64
With this setting it is possible 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 flowrate
zero.
This function will measure the real output value at flow zero.
Warning: 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!
After pressing PROG, three settings can be selected:
CALIBRATE: with this setting, the input will be calibrated with the
actual "(0)4mA" value. After pressing enter, CAL SET will be
displayed 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.
DEFAULT: with this setting, the manufactures value is re-installed.
CAL SET: to select the last calibrated value.
TUNE MAX / 20MA
64
With this setting it is possible to calibrate the input value for 20mA as the
signal from the sensor might not be exact 20.0 mA at maximum flowrate.
This function will measure the real output value at maximum flowrate.
Warning: 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!
After pressing PROG, three settings can be selected:
CALIBRATE: with this setting, the input will be calibrated with the
actual "20mA" value. After pressing enter, CAL SET will be displayed
as soon as the calibration is completed. From that moment, the
analog value must be less than the calibrated value for a reliable
measurement.
DEFAULT: with this setting, the manufactures value is re-installed.
CAL SET: to select the last calibrated value.

HF170AEN_OS_v0501_04
Page 19
7 - ANALOG OUTPUT
A linear 4-20mA signal (option AB: 0-20mA or option AU: 0-10V) output signal is generated
according to the calculated level, height or percentage with a 10 bits resolution.
Note: When the analog-output is not used, please make sure that setup 71 is disabled, else the
battery life-time will be reduced significantly!
When a power supply is available but the output is disabled, a 3.5mA signal will be generated.
The relationship between rate and analog output is set with following functions:
DISABLE / ENABLE
71
The D/A converter has a relatively high power consumption. If the analog
output will not be used, select "disable" to switch-off the converter.
For more information read par. 4.4.3.
INPUT
72
Enter here whether the analog output value should be based on level
(setup 1), height (setup 2) or percentage of the input.
MINIMUM LEVEL
73
Enter here the level according which the output should generate a 4mA
signal (or 0mA / 0V) - in most applications at level "zero".
The units and number of decimals displayed in this screen depend on the
settings chosen in setup 72: They correspond to the values set for level
(setup 1) or height (setup 2). When percentage is chosen they reflect “%”
and one decimal. Note that the units cannot be displayed.
MAXIMUM LEVEL
74
Enter here the level according which the output should generate a 20mA
(or 10V) - in most applications at maximum level.
The units and number of decimals displayed in this screen depend on the
settings chosen in setup 72: They correspond to the values set for level
(setup 1) or height (setup 2). When percentage is chosen they reflect “%”
and one decimal. Note that the units cannot be displayed.
CUT-OFF
75
A low-level cut-off can be set as percentage over the full range of 16mA
(or 20mA / 10V).
When the level is less than the required rate, the current will be 4mA.
Examples:
4MA
(SETUP 73) 20MA (SETUP 74) CUT-OFF (SETUP 75) REQUIRED RATE OUTPUT
0 L 100 L 2% (100-0)*2% = 2.0 L 4+(16*2%) = 4.32mA
20 L 800 L 3.5% (800-20)*3.5%= 27.3 L 4+(16*3.5%)=4.56mA
TUNE MIN / 4MA
76
The initial minimum analog output value is 0/4mA or 0V. However, this
value might differ slightly due to external influences such as temperature
for example. The 0/4mA or 0V value can be tuned precisely with this
setting.
Before tuning the signal, be sure that the analog signal is not
being used for any application!
After pressing PROG, the current will be about 4mA (or 0mA / 0V). The
current can be increased / decreased with the arrow-keys and is directly
active. Press ENTER to store the new value.
Remark: the analog output value can be programmed “up-side-down” if
desired, so 20mA at minimum flowrate for example!
TUNE MAX / 20MA
77
The initial maximum analog output value is 20mA (or 10V). However, this
value might differ slightly due to external influences such as temperature
for example. The 20mA value (or 10V) can be tuned precisely with this
setting.
Before tuning the signal, be sure that the analog signal is not
being used for any application!
After pressing PROG, the current will be about 20mA. The current can be
increased / decreased with the arrow-keys and is directly active. Press
ENTER to store the new value.
Remark: the analog output value can be programmed “up-side-down” if
desired, so 4mA at maximum flowrate for example!
Continued next page >>>

HF170AEN_OS_v0501_04
Page 20
7 - ANALOG OUTPUT (CONTINUED)
FILTER
78
This function is used to stabilize the analog output signal.
The output value is update every 0.1 second. With the help of this digital
filter a more stable but less actual reading can be obtained.
The filter principal is based on three input values: the filter level (01-99),
the last analog output value and the last average value. The higher the
filter level, the longer the response time on a value change will be.
Below, several filter levels with there response times are indicated:
FILTER VALUE RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE.
TIME IN SECONDS
7 50%INFLUENCE 75%INFLUENCE 90% INFLUENCE 99%INFLUENCE
01 filter disabled filter disabled filter disabled filter disabled
02 0.1 second 0.2 second 0.4 second 0.7 second
03 0.2 second 0.4 second 0.6 second 1.2 seconds
05 0.4 second 0.7 second 1.1 seconds 2.1 seconds
10 0.7 second 1.4 seconds 2.2 seconds 4.4 seconds
20 1.4 seconds 2.8 seconds 4.5 seconds 9.0 seconds
30 2.1 seconds 4 seconds 7 seconds 14 seconds
50 3.5 seconds 7 seconds 11 seconds 23 seconds
75 5.2 seconds 10 seconds 17 seconds 34 seconds
99 6.9 seconds 14 seconds 23 seconds 45 seconds
8 - RELAY OUTPUT
With “SETUP 2”, four alarm levels can be entered. Based on the options order, the F170-A-OS will
have 2, 3 or 4 alarm outputs.
Note: If the unit is Intrinsically Safe, it will have two alarm outputs.
If option OS (relay board) is supplied, it will have four alarm outputs. Else it has three alarm outputs.
OUTPUT R1
81
Assign the output function to output R1.
Following can be selected:
low-low - low - high - high-high alarm - all alarms - off
OUTPUT R2
82
Assign the output function to output R2.
Following can be selected:
low-low - low - high - high-high alarm - all alarms - off
OUTPUT R3
83
Assign the output function to output R3.
Following can be selected:
low-low - low - high - high-high alarm - all alarms - off
OUTPUT R4
84
Assign the output function to output R4.
Following can be selected:
low-low - low - high - high-high alarm - all alarms - off
9 - COMMUNICATION (OPTIONAL)
Functions as described below deal with hardware that are not part of the standard delivery.
Programming of these functions does not have any effect if this hardware has not been installed.
Consult Appendix C and the Modbus communication protocol description for a detailed explanation.
BAUDRATE
91
For external control, following communication speeds can be selected:
1200 - 2400 - 4800 - 9600 baud
BUS ADDRESS
92
For communication purposes, a unique identity can be attributed to every
F170-A-OS. This address can vary from 1-255.
MODE
93
The communication is executed according Modbus protocol RTU mode.
With OFF, the communication is disabled.