Fluidwell F118-A User manual

F118-A
FLOWRATE INDICATOR / TOTALIZER
WITH LINEARISATION AND HIGH / LOW ALARMS
Signal input flowmeter: (0)4-20mA
Analog output: 4-20mA ref. flowrate and pulse ref. total.
Switch outputs: high / low alarms and / or pulse ref. total.
Options: Intrinsically Safe, 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 F118-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 (type HA/HU) as indicated if the
F118-A has been supplied with the 115-230V AC power-supply (type PM/PN). The
green/yellow wire between the back-casing and removable terminal-block may never be
removed.
Intrinsically Safe applications: follow the instructions as mentioned in Chapter 5 and
consult “Fluidwell F1..-..-XI - Documentation for Intrinsic Safety”.
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 F118-A implemented without a preceding written consent from the
manufacturer, will result in the immediate termination of product liability and warranty period.
Installation, use, maintenance and de-mounting 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 F118-A 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 F118-A 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 F118-A or connected instruments.
A "caution" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect function of the F118-A 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 : HF118AEN_v0501_06
© 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 ........................................................................................................................................... 1
Safety rules and precautionary measures ....................................................................................................... 2
About the operation manual ............................................................................................................................ 3
Contents manual.............................................................................................................................................. 3
1. Introduction ................................................................................................................................. 5
1.1. System description of the F118-A.......................................................................................... 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 - Total........................................................................................................................... 14
2 - Flowrate ..................................................................................................................... 15
3 - Alarm ......................................................................................................................... 16
4 - Power management .................................................................................................. 16
5 - Flowmeter .................................................................................................................. 17
5 - Flowmeter (continued)............................................................................................... 18
6 - linearisation................................................................................................................ 19
6 - linearisation (continued) ............................................................................................ 20
7 - Analog output............................................................................................................. 20
8 - Relay output............................................................................................................... 21
9 - Communication (optional).......................................................................................... 21
A - Others........................................................................................................................ 22
4. Installation ................................................................................................................................. 23
4.1. General directions................................................................................................................ 23
4.2. Installation / surrounding conditions .................................................................................... 23
4.3. Dimensions- Enclosure ........................................................................................................ 24
4.4. Installing the hardware......................................................................................................... 26
4.4.1. Introduction........................................................................................................................ 26
4.4.2. Voltage selection sensor supply........................................................................................ 27
4.4.3. Terminal connectors.......................................................................................................... 28
5. Intrinsically safe applications..................................................................................................... 35
5.1. General information and instructions ................................................................................... 35
5.2. Terminal connectors Intrinsically Safe applications ............................................................. 36
5.3 Configuration Examples....................................................................................................... 38
5.4 Battery replacement instructions.......................................................................................... 40
6. Maintenance.............................................................................................................................. 41
6.1. General directions................................................................................................................ 41
Appendix A: Technical specification .............................................................................................................. 42
Appendix B: Problem solving......................................................................................................................... 45
Appendix C: Communication variables.......................................................................................................... 46
Index of this manual....................................................................................................................................... 49
List of figures in this manual .......................................................................................................................... 49

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1. INTRODUCTION
1.1. SYSTEM DESCRIPTION OF THE F118-A
Functions and features
The flowrate / totalizer model F118-A is a microprocessor driven instrument designed to linearize the
flowmeters flowcurve and to display flowrate, total and accumulated total. Moreover, two alarm
values can be set to monitor the flowrate.
This product has been designed with a focus on:
ultra-low power consumption to allow long-life battery powered applications (type PB),
intrinsic safety for use in hazardous applications (type XI),
several mounting possibilities with ABS or aluminum enclosures for harsh industrial
surroundings,
ability to process all types of flowmeter signals,
transmitting possibilities with analog / pulse and communication (option) outputs.
Flowmeter input
This manual describes the unit with a analog type input from the flowmeter "-A version". Other
versions are available to process pulses or 0-10V flowmeter signals.
One flowmeter with a (0)4-20mA signal output can be connected to the F118-A. To power the
sensor, several options are available.
Standard outputs
Two / three configurable outputs: high or low flowrate alarm, all alarms or pulse output.
Configurable pulse output: a scaled pulse mirroring a certain linearised total quantity. Maximum
frequency 60Hz.; the pulse length can be set from 7,8msec up to 2 seconds.
Configurable passive linear 4-20mA analog output with 10-bits resolution mirroring the actual
linearised flowrate. Flowrate levels as well as the minimum and maximum signal output can be
tuned.
Overview typical application F118-A
mA
(0)4-20mA output
or
0-10V
RS232/RS485
Modbus
(option)
R1:
alarm output
or
pulse output
R2:
alarm output
or
pulse output
R3:
alarm output
or
pulse output
Fig. 1: Typical application for the F118-A.

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Configuration of the unit
The F118-A was designed to be implemented in many types of applications. For that reason, a
SETUP-level is available to configure your F118-A according to your specific requirements.
SETUP includes several important features, such as K-factors, measurement units, signal selection
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.
Flowrate and totals can be displayed either with the small 8mm digits or with the 17mm digits.
A backup of the total and accumulated total in EEPROM memory is made every minute.
Options
Following options are available: isolated or active 4-20mA / 0-10V / 0-20mA analog output, full
Modbus communication RS232/485 (also battery powered), intrinsic safety, mechanic relay or active
outputs, power- and sensor-supply options, panel-mount, wall-mount and weather-proof enclosures,
flame proof enclosure.

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2. OPERATIONAL
2.1. GENERAL
The F118-A 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 F118-A. 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 gain access to SETUP-level; please read chapter 3.
This key is used to SELECT accumulated total and flowrate alarm values.
The arrow-key is used to increase a value after PROG has been pressed
or to configure the unit; please read chapter 3.
Press this key twice to CLEAR the value for total.
The arrow-key is used to select a digit after PROG has been pressed or to
configure the unit; please read chapter 3.

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2.3. OPERATOR INFORMATION AND FUNCTIONS
In general, the F118-A will always function at Operator level. The information displayed is dependant
upon the SETUP-settings. All pulses generated by the connected flowmeter are measured by the
F118-A 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 flowrate / total
This is the main display information of the F118-A. After selecting any other information, it will
always return to this main display automatically.
Total is displayed on the upper-line of the display and flowrate on the bottom line.
When "-------" is shown, then the flowrate value is too high to be displayed. The arrows 
indicate the increase/decrease of the flowrate trend.
Clear total
The value for total can be re-initialized. To do so, press CLEAR twice. After pressing CLEAR
once, the flashing text "PUSH CLEAR" is displayed. To avoid re-initialization at this stage,
press another key than CLEAR or wait for 20 seconds.
Re-initialization of total DOES NOT influence the accumulated total.
Display accumulated total
When the SELECT-key is pressed, total and accumulated total are displayed. The
accumulated total cannot be re-initialized. The value will count up to 99,999,999,999. The unit
and number of decimals are displayed according to the configuration settings for total.

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Programming the flowrate alarm values
Note: This function might not be immediately accessible due to a configuration setting.
When the SELECT-key is pressed a few times, following flowrate alarm values are displayed:
low flowrate alarm: enter here 40 L/min for example,
high flowrate alarm: enter here 200 L/min for example,
To change the alarm value, the following procedure must be executed:
1) press PROG: the word "PROGRAM" will flash or a pass code will be requested,
2) use to select the digits and to increase that value,
3) confirm the new alarm value by pressing ENTER.
Fig. 4: Example of display information during programming minimum flowrate.
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 during three seconds: the former
value will be reinstated.
Flowrate alarm
When the actual flowrate is outside the allowed range, an alarm message will be displayed
indicating the type of alarm: "LO RATE" or "HI RATE".
The alarm is terminated automatically as soon as the flowrate is within its range again.
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 01-03
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 F118-A 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 F118-A 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 F118-A 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 TOTAL
11 UNIT L - m3 - kg - lb - GAL - USGAL - bbl - no unit
12 DECIMALS 0 - 1 - 2 - 3 (Ref: displayed value)
13 SPAN 0.000001 - 999,999 unit/second
14 DECIMALS SPAN 0 - 6
2 FLOWRATE
21 UNIT mL - L - m3 - mg - g - kg - ton - GAL - bbl - lb - cf - REV -
no unit
22 TIME UNIT sec - min - hour - day
23 DECIMALS 0 - 1 - 2 - 3 (Ref: displayed value)
24 SPAN 0.000001 - 999,999 unit/time-unit
25 DECIMALS SPAN 0 - 6
3 ALARM
31 ALARM SET operator - setup level
32 FLOWZERO default - no relays - ignore
33 ALARM LOW 0000.000 - 9,999,999
34 ALARM HIGH 0000.000 - 9,999,999
35 DELAY ALARM LOW 0.1 - 999.9 seconds
36 DELAY ALARM HIGH 0.1 - 999.9 seconds
4 POWER MANAGEMENT
41 LCD UPDATE fast - 1 sec - 3 sec - 15 sec - 30 sec - off
42 BATTERY MODE operational - shelf
5 FLOWMETER
51 FORMULA interpolation, square root
52 FILTER 00 - 99
53 CUT-OFF 0.0 - 99.9%
54 CALIBRATE LOW (0)4mA
55 CALIBRATE HIGH 20mA
6 LINEARISATION
61 % / M-FACTOR 1 0.01% – 99.99% / 0 – 9.999999
62 % / M-FACTOR 2 0.01% – 99.99% / 0 – 9.999999
63 % / M-FACTOR 3 0.01% – 99.99% / 0 – 9.999999
.. .. ……..
6A % / M-FACTOR 10 0.01% – 99.99% / 0 – 9.999999
6B LINEARISATION enable / disable
7 ANALOG
71 OUTPUT disable - enable
72 RATE MIN - (0)4mA / 0V 0000.000 - 9,999,999
73 RATE MAX - 20mA / 10V 0000.000 - 9,999,999
74 TUNE MIN - 4mA / 0V 0 - 9,999
75 TUNE MAX- 20mA / 10V 0 - 9,999
8 RELAYS
81 OUTPUT R1 off - low - high - all - pulse
82 OUTPUT R2 off - low - high - all - pulse
83 OUTPUT R3 off - low - high - all - pulse
84 UNIT WIDTH 0 - 250
85 IMPULSE PER X,XXX,XXX quantity
9 COMMUNICATION
91 SPEED / BAUDRATE 1200 - 2400 - 4800 - 9600
92 ADDRESS 1 - 255
93 MODE rtu - off
A OTHERS
A1 TYPE / MODEL
A2 SOFTWARE VERSION
A3 SERIAL NO.
A4 PASSWORD 0000 - 9999
A5 TAGNUMBER 0000000 - 9999999

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3.2.3. EXPLANATION SETUP-FUNCTIONS
1 - TOTAL
MEASUREMENT UNIT
11
SETUP - 11 determines the measurement unit for total, accumulated total
and pulse output. The following units can be selected:
L - m3 - kg - lb. - GAL - USGAL - bbl - _ (no unit).
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
The decimal point determines for total, accumulated total and pulse output
the number of digits following the decimal point.
The following can be selected:
0000000 - 111111.1 - 22222.22 - 3333.333
SPAN
13
With the span, the flowmeter signal is converted to a quantity. The span
for Total is determined on the basis of the measurement unit (setting 11)
and the flowrate per second 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 Total.
Let us assume that the flowmeter generates 20mA at a flowrate
of 2,481.3 Liters/minute and the selected unit is
"cubic meters / m3".
The rate per second is 2,481.3÷60 is 41.355 L/sec. This is
0.041355 m3/sec., which is the span.
Enter for SETUP - 13: "041355" and for SETUP - 14 - decimals
span "6".
Example 2: Calculating the span for Total
Let us assume that the flowmeter generates 20mA at a rate of
652.31 USGAL per hour, the selected unit is barrels.
There are 42 gallons in one barrel; so the rate is 652.31/42 is
15.53119 barrels/hour. This is 0.0043142 barrels/second, which
is the span.
Enter for SETUP - 13: "004314" and for SETUP - 14 "6".
DECIMALS SPAN
14
This setting determines the number of decimals for the Span
(SETUP 13). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this function influences the accuracy of the Span
indirectly.
This setting has NO influence on the displayed number of digits for total
(SETUP 12)!

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2 - FLOWRATE
The settings for total and flowrate are entirely separate. In this way, different units of measurement
can be used for each e.g. cubic meters for total and liters for flowrate.
The display update time for flowrate is one second or more.
Note: these settings also influence the analog output.
MEASUREMENT UNIT
21
SETUP - 21 determines the measurement unit for flowrate.
The following units can be selected:
mL - L - m3 - mg - g - kg - ton - GAL - bbl - lb - cf - REV - no unit
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.
TIME UNIT
22
The flowrate can be calculated per second (SEC), minute (MIN), hour
(HR) or day (DAY).
DECIMALS
23
This setting determines for flowrate the number of digits following the
decimal point. The following can be selected:
00000 - 1111.1 - 2222.22 - 3333.333
SPAN
24
With the span, the flowmeter signal is converted to a quantity.
The span for flowrate is determined on the basis of the selected
measurement unit and time unit at 20mA.
Enter the span in whole numbers (decimals are set with SETUP 25).
The more accurate the span, the more accurate the functioning of the
system will be.
Example 1 Calculating the span for flowrate
Let us assume that the flowmeter generates 20mA at a
flowrate of 2,481.3 Liters/minute, the selected unit is
"Liters" and time unit "minute".
The span is 2481.3
Enter for SETUP - 24: "248130" and for SETUP - 25 -
decimals span "2".
Example 2 Calculating the span for flowrate
Let us assume that the flowmeter generates 20mA at a
rate of 652.31 USGAL per hour, the selected unit is USG
and the time unit is minute.
The span is 652.31 / 60 minutes is 10.87183 (GPM).
Enter for SETUP - 24: "108718" and for SETUP - 25 "4".
DECIMALS SPAN
25
This setting determines the number of decimals for Span
(SETUP 24). The following can be selected:
0 - 1 - 2 - 3 - 4 - 5 - 6
Please note that this SETUP - influences the accuracy of the Span
indirectly.
This setting has NO influence on the displayed number of digits for
"flowrate" (SETUP 23)!

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3 - ALARM
With these settings, it is determined how the flowrate will be monitored and the functionality of the
transistor / relay outputs (terminals 03-04, 05-06 and 15-16) be determined.
Note: for transistor / relay output functions: read SETUP 8 “relays”.
SET ALARM
31
This function determines if the flowrate alarm values can be set at both
Operator level and SETUP-level or SETUP-level only.
If SETUP has been selected, the alarm values are still visible for the
Operator but can not be changed.
FLOW ZERO
32
When the flowrate is zero, then it is possible to ignore or disable the
flowrate monitoring. The following settings can be selected:
DEFAULT: in case of a low-flowrate alarm and zero flow, it will switch
the alarm output and indicate the alarm on the display.
NO RELAY: in case of a low-flowrate alarm and zero flow, it won't
switch the alarm output but will indicate the alarm on the
display only.
IGNORE: in case of a low-flowrate alarm and zero flow, it won't
switch the alarm output and nothing will be indicated on
the display.
ALARM VALUE
LOW
33
The low alarm is set with this setting. An alarm will be generated as long
as the flowrate lower as this.
With value 0.0 this function is disabled.
ALARM VALUE
HIGH
34
The high alarm is set with this setting. An alarm will be generated as long
as the flowrate higher as this.
With value 0.0 this function is disabled.
DELAY TIME ALARM
LOW
35
An alarm generated by SETUP 33 “low” can be ignored during X-time
period. If the actual flowrate is still incorrect after this delay time, then an
alarm will be generated.
DELAY TIME ALARM
HIGH
36
An alarm generated by SETUP 34 “high” can be ignored during X-time
period. If the actual flowrate is still incorrect after this delay time, then an
alarm will be generated.
4 - 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 F118-A has several smart power management functions to extend
the battery life time significantly. Two of these functions can be set:
LCD NEW
41
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; every pulse will be
counted 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 a coil pick-up, 1KHz. pulses and FAST
update: about 2 years.
battery life-time with a coil pick-up, 1KHz. pulses and 1 sec
update: about 5 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
42
The unit has two modes: operational or shelf.
After "shelf" has been selected, the unit can be stored for several years; it
will not count pulses, 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.

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5 - FLOWMETER
SIGNAL
51
The F118-A can process the 4-20mA signal in two ways:
Interpolation: the signal is processed linear
R = S x I
Square root: for differential pressure
R = S √I
where:
R = Rate: the calculated flowrate
S = Span: the maximum flowrate at 20mA. The span is programmed
with setting 24 for flowrate
and with setting 13 for total.
I = Input: the scaled analog value; in these formulas value 0 (zero)
for (0)4mA and value 1 (one)
for 20mA.
FILTER
52
The analog output signal of a flowmeter does mirror the actual flow. This
signal is measured several times a second by the F118-A. The value
measured is a "snap-shot" of the real flow 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:
FILTER
53
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
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
30 5.3 seconds 10 seconds 17 seconds 34 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
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HF118AEN_v0501_06
Page 18
5 - FLOWMETER (CONTINUED)
CUT-OFF
54
To ignore e.g. leakage of the flow or vibration, a low-flow 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:
FUNCTION
(setup 51) SPAN (setup
13/24)
REQUIRED
CUT-OFF CUT-OFF (setup 63) REQUIRED OUTPUT
interpolation 450 L/min 25 L/min 25/450 x 100%=5.5% 16mA x 5.5% + 4mA = 4.88mA
square root 450 L/min 25 L/min (25/450)2 x 100%=0.3% 16mA x 0.3% + 4mA = 4.05mA
TUNE MIN / 4MA
55
With this setting it is possible to calibrate the input value for (0)4mA as the
signal from the flowmeter 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
56
With this setting it is possible to calibrate the input value for 20mA as the
signal from the flowmeter 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.

HF118AEN_v0501_06
Page 19
6 - LINEARISATION
The linearisation function is available to approach the real flowcurve better as with the general Span
entered with setup 14 and 24. This to obtain a more accurate flowrate, total and accumulated total
as well as the analog and pulse output at any flowmeter signal.
A maximum of 15 linearisation-positions can be entered while the interpolation will calculate any
other position in-between.
For each linearisation position, the percentage of signal and the Meter Factor (MF) must be entered.
The Meter Factor for each linearisation step is calculated with following formula:
Meter-Factor = measured flow
calculated flow
The lowest percentage and MF you enter will be valid from 0V. The highest percentage and MF will
be valid till 10V. It is advised to enter the percentages in increasing order, however it is not
necessary. Please have a look at following example to understand the method of linearisation:
Continued next page >>>

HF118AEN_v0501_06
Page 20
6 - LINEARISATION (CONTINUED)
PERCENTAGE /
M-FACTOR
61 TO 6A
The percentage is displayed at the bottom line of the display.
With value 0% the M-Factor is disabled.
The M-Factor is displayed at the top-line of the display. The minimum
value to be entered is 0.000001 and the maximum value is 9.999999.
Please note that this value has always six decimals while the "dot" is not
displayed.
Most M-factors will be around 1.000000 like 0.945354 or 1.132573.
DISABLE / ENABLE
6B
With this setup function, you can easily enable / disable the linearisation
function.
7 - ANALOG OUTPUT
A linear 4-20mA signal (type AB: 0-20mA or type AU: 0-10V) output signal is generated according to
the flowrate with a 10 bits resolution. The settings for flowrate (SETUP - 2) influences the analog
output directly.
Note: When the analog-output is not used, please make sure that setting 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.
MINIMUM FLOWRATE
72
Enter here the flowrate according which the output should generate a
4mA signal (or 0mA / 0V) - in most applications at flowrate "zero".
The number of decimals displayed is according to SETUP 23.
The time and measuring units (L/min for example) are according SETUP
21 and 22 but can not be displayed.
MAXIMUM FLOWRATE
73
Enter here the flowrate according which the output should generate a
20mA (or 10V) - in most applications at maximum flow.
The number of decimals displayed is according to SETUP 23.
The time and measuring units (L/min for example) are according SETUP
21 and 22 but can not be displayed.
TUNE MIN / 4MA
74
The initial minimum analog output value is 4mA (or 0mA / 0V). However,
this value might slightly differ due to external influences such as
temperature for example The 4mA value (or 0mA / 0V) can be tuned
exactly with this setting.
Before tuning the signal, be sure that the analog signal is not
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.
TUNE MAX / 20MA
75
The initial maximum analog output value is 20mA (or 10V). However, this
value might slightly differ due to external influences such as temperature
for example The 20mA value (or 10V) can be tuned exactly with this
setting.
Before tuning the signal, be sure that the analog signal is not
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.