Fluidwell F126-P-EG-TP User manual

F126-P-EG-TP
FLOW COMPUTER
temperature and pressure compensation for corrected gas volume
Signal input flowmeter - type P: pulse, Namur and coil
Signal input pressure - type IA: (0)4-20mA
Signal input temperature - type TP: PT100 2- or 3 wire
Signal output: (0)4-20mA/0-10V ref. corrected flow rate and 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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Page 2
SAFETY INSTRUCTIONS
▪Any responsibility is lapsed if the instructions and procedures as described in this
manual are not followed.
▪LIFE SUPPORT APPLICATIONS: The F126-P 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 metal enclosure as indicated if the F126-P has an
incoming power line which carries a 115-230V AC. The Protective Earth (PE) wire may
never be disconnected or removed.
▪Intrinsically safe applications: follow the instructions as mentioned in Chapter 5 and
consult “Fluidwell F1..-..-XI - Documentation for Intrinsic safety”.
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.
•Please contact your local dealer, national distributor or the manufacturer’s Technical 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 F126-P 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 unit.
▪Check all connections, settings and technical specifications of the various peripheral devices
with the F126-P 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 the classification of the
enclosure (see manufacture's plate and chapter 4).
▪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 MANUAL
This operation 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 F126-P 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 F126-P or connected instruments.
A "caution !" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the F126-P 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 Fluidwell products,
visit our internet site www.fluidwell.com or contact us at [email protected]om.
Hardware version : 03.01.xx
Software version : 03.03.xx
Manual : FW_F126PEGTP_v1901_04_EN.docx
© Copyright 2021 : 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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CONTENTS MANUAL
SAFETY INSTRUCTIONS.................................................................................................. 2
DISPOSAL OF ELECTRONIC WASTE.............................................................................. 2
SAFETY RULES AND PRECAUTIONARY MEASURES ................................................... 2
ABOUT THE MANUAL....................................................................................................... 3
WARRANTY AND TECHNICAL SUPPORT....................................................................... 3
CONTENTS MANUAL........................................................................................................ 4
1. INTRODUCTION..................................................................................................... 5
1.1. System description................................................................................................................... 5
2. OPERATIONAL ...................................................................................................... 6
2.1. Control panel............................................................................................................................ 6
2.3. Operator information and functions ......................................................................................... 6
3. CONFIGURATION .................................................................................................. 8
3.1. How to program the F126-P .................................................................................................... 8
3.1.2. Setup menu - Settings ...........................................................................................................10
3.1.3. Explanation of setup menu 1 - Total......................................................................................11
3.1.4. Explanation of setup menu 2 - Flow rate...............................................................................11
3.1.5. Explanation of setup menu 3 - Display..................................................................................12
3.1.6. Explanation of setup menu 4 - Power management.............................................................. 12
3.1.7. Explanation of setup menu 5 - Flowmeter.............................................................................13
3.1.8. Explanation of setup menu 6 - Temperature ......................................................................... 13
3.1.8. Explanation of setup menu 7 - Pressure................................................................................ 14
3.1.9. Explanation of setup menu 8 - Formula.................................................................................15
3.1.9. Explanation of setup menu 9 - Analog...................................................................................15
3.1.11. Explanation of setup menu A - Pulse.....................................................................................16
3.1.12. Explanation of setup menu B - Communication (option).......................................................17
3.1.13. Explanation of setup menu C - Others...................................................................................17
4. INSTALLATION.................................................................................................... 18
4.1. General directions.................................................................................................................. 18
4.2. Installation - surrounding conditions ......................................................................................18
4.3. Dimensions- Enclosure..........................................................................................................19
4.4. Installing the hardware........................................................................................................... 21
4.4.1. General installation guidelines............................................................................................... 21
4.4.2. Protective Earth (PE) connections......................................................................................... 22
4.4.3. Aluminum enclosure - Field mounted....................................................................................23
4.4.4. Aluminum enclosure - Panel mounted...................................................................................23
4.4.5. Plastic (GRP) enclosure......................................................................................................... 24
4.4.6. Terminal connectors .............................................................................................................. 25
4.4.7. Voltage selection sensor supply ............................................................................................ 25
5. INTRINSICALLY SAFE APPLICATIONS.............................................................. 32
5.1. General information and instructions..................................................................................... 32
5.2. Terminal connectors Intrinsically safe applications ...............................................................34
5.3 Configuration Examples......................................................................................................... 36
5.4 Battery replacement instructions ........................................................................................... 37
5.4.1. Safety instructions..................................................................................................................37
5.4.2. Replace the battery (hazardous area) ................................................................................... 37
5.4.3. Disposal of batteries .............................................................................................................. 37
6. MAINTENANCE.................................................................................................... 38
6.1. General directions.................................................................................................................. 38
6.2 Repair .................................................................................................................................... 38
6.3. Repair policy .......................................................................................................................... 38
APPENDIX A: TECHNICAL SPECIFICATIONS........................................................... 39
APPENDIX B: PROBLEM SOLVING............................................................................ 42
APPENDIX C: COMMUNICATION VARIABLES.......................................................... 43
APPENDIX D: DECLARATION OF CONFORMITY...................................................... 47
INDEX OF THIS MANUAL ............................................................................................... 48
LIST OF FIGURES IN THIS MANUAL ............................................................................. 49

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1. INTRODUCTION
1.1. SYSTEM DESCRIPTION
Functions and features
The flow computer model F126-P-EG-TP is a microprocessor driven instrument for the calculation of
standard volumetric flow or mass flow for gas applications using flow equations.
This product has been designed with a focus on:
▪ultra-low power consumption to allow long-life battery powered applications (type PB/PC),
▪intrinsic safety for use in hazardous applications (type XI);
▪several mounting possibilities with aluminum or GRP enclosures for harsh industrial surroundings;
▪ability to process all types of flowmeter signals;
▪transmitting possibilities with analog / pulse and communication outputs.
Flowmeter and temperature input
This manual describes the unit with a pulse input from the flowmeter. The F126-P has also a PT100
temperature input. Other versions are available to process (0)4-20mA signals.
One flowmeter with a passive or active pulse, Namur or sine wave (coil) signal output can be
connected to the F126-P. To power the sensor, several options are available.
Standard output
▪Pulse output to transmit a pulse that represents a totalized quantity as programmed.
▪Linear (0)4-20mA or 0-10V analog output to represent the actual flow rate as programmed. The
(0)4-20mA or 0-10V signal limits can be tuned.
Fig. 1: Typical application
Configuration of the unit
The F126-P is designed for use in many types of applications. For that reason, a setup menu is
available to program the F126-P according to your specific requirements.
The setup includes several important features, such as K-Factors, engineering units, signal
selection, power management (to extend battery life-time), etc. All settings are stored in a non-
volatile memory and therefore kept 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.
A backup of the total and accumulated total in EEPROM memory is made every minute.
Options
The following options are available: isolated or active (0)4-20mA / 0-10V analog output, full Modbus
communication RS232/485/TTL (also battery powered), intrinsic safety, mechanical relay or active
output, power- and sensor-supply options, extended measurement range for PT100, panel -mount,
wall-mount and weather-proof enclosures, flame proof enclosure and LED backlight.

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2. OPERATIONAL
•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.
This chapter describes the daily use of the F126-P. This instruction is meant for users / operators.
2.1. CONTROL PANEL
The control panel has three keys. The available keys are:
Fig. 2: Control Panel
Functions of the keys
This key is used to program and save new values or settings.
The PROG/ENTER key is also used to gain access to the setup menu (read
chapter 3).
This key is used to select the accumulated total, the pressure and the temperature.
The SELECT/key is also used to increase a value after the PROG/ENTER key has
been pressed (read chapter 3).
This key is used to reset the total.
The CLEAR/key is also used to select a digit or an option after the PROG/ENTER
key has been pressed (read chapter 3).
2.3. OPERATOR INFORMATION AND FUNCTIONS
In general, the F126-P operates in the operator
mode. The shown information depends on the
settings which are made in the setup menu.
The signal from the connected sensor is processed
by the F126-P in the background, independent from
the selected display refresh rate.
Fig. 3: Process information (typical)
For the Operator, the following functions are available:
▪Display calculated flow rate and calculated total or calculated flow rate
This is the main display information of the F126-P. After the selection of any other information, it
will always return to this main display automatically. Total is shown on the upper line of the
display and flow rate on the bottom line. When selected in the setup menu, the display shows the
flow rate only. When you press the select key, the total shows momentarily.
When "-------" is shown, the flow rate value is too high to be shown. The arrows indicate the
increase/decrease of the flow rate trend.
▪Clear total
The value for total can be reset. To do so, press the CLEAR/key twice. When the key is
pressed once, the text "PUSH CLEAR" is shown. To avoid a reset at this stage, press another
key other than the CLEAR/key or wait for 20 seconds. A reset of the total does not influence
the accumulated total.
▪Display calculated accumulated total
When the SELECT/key is pressed, total and accumulated total are shown. The accumulated
total cannot be reset. The value will count up to 99,999,999,999. The unit and number of
decimals are shown according to the settings for the total.
RUN

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▪Display line temperature
When the SELECT/key is pressed three times, the actual temperature is shown.
Note that the actual flow rate shows on the bottom line intermittently.
▪Display line pressure
When the SELECT/key is pressed two times, the actual pressure is shown.
Note that the actual flow rate shows on the bottom line intermittently.
▪Range error
As soon as the input value is out of the calibrated PT100 measurement range, the alarm indicator
shows. When the SELECT/key is pressed a few times, the alarm code is shown in the alarm
display. This alarm is also activated at a wire break or faulty sensor.
(standard range -100°C - +200°C or extended range, type ZV: -200° - +800°C).
▪Low-battery alarm
Only use original batteries. Original batteries can be ordered at the manufacturer.
The use of unapproved batteries will void the warranty.
•
At the end of the battery’s life-time, the
voltage starts to drop. When the voltage
becomes too low, the battery indicator comes
on. When the battery indicator is on, install a
new and fresh battery as soon as possible.
Fig. 4: Low-battery alarm (typical)
▪Alarm
When the alarm indicator is shown, refer to Appendix B: Problem Solving.

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3. CONFIGURATION
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.
The setup menu is used to program the F126-P.
The setup menu is accessible at all times while the F126-P remains fully operational. Be aware that
in this case any change to the settings may have an influence on the operation.
It is possible to prevent access to the setup menu with a password. A password may be
required to enter the setup menu. Without this password, access is denied.
3.1. HOW TO PROGRAM THE F126-P
The setup menu has different
submenus. Each submenu has an
unique number which is shown in
front of the menu name.
Each setting has an unique two-
digit number which is shown in
front of the setting. The first digit
refers to the submenu and the
second digit refers to the setting.
Note that sometimes the name of
the setting is shown on the upper
line of the display.
How to enter the setup menu
When the setup menu is protected by a password, the F126-P asks for a password to access the
setup menu. When in the operator mode, press and hold the PROG/ENTER key for 7 seconds to
access the setup menu.
How to navigate in the setup menu
The setup menu has different submenus to program the F126-P. For navigation, the submenus
and the settings are identified with numbers (for the submenu: e.g. 1; for the setting: e.g. 12.).
The CLEAR/► key and the PROG/ENTER key are used for navigation. The explanation
assumes that you are in the submenu TOTAL.
Action
Result
Remark
1
Press the CLEAR/► key to
select the next submenu.
•The submenu FLOW
RATE shows
-
2
Press again to go to the
next submenu.
•The submenu DISPLAY
shows.
-
3
Momentarily, press the
PROG/ENTER key to
select the previous
submenu.
•The submenu FLOW
RATE shows
The PROG/ENTER key is
used as a ◄key.
4
Press again to go to the
previous submenu.
•The submenu TOTAL
shows
The PROG/ENTER key is
used as a ◄key.

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The SELECT/▲ key and the CLEAR/► key are used for navigation.
The explanation assumes that you are in the submenu TOTAL. When you are:
•in the first setting and you navigate to the previous setting, the F126-P goes back to the related
main menu.
•in the last setting and you navigate to the next setting, the F126-P goes to the related main
menu.
Action
Result
Remark
1
Press the SELECT/▲ key
to select the first setting.
•The setting UNIT shows.
-
2
Press the SELECT/▲ key
again to go to the next
setting.
•The setting DECIMALS
shows.
-
3
Press the CLEAR/► key to
select the previous setting.
•The setting UNIT shows.
-
4
Press the CLEAR/►key
again to go to the previous
setting.
•The submenu TOTAL
shows
This is normal behavior
because the setting UNIT is
the first setting of the
submenu TOTAL.
How to make a setting
Changes are only saved when you press the PROG/ENTER key.
The explanation assumes that you are in the submenu TOTAL and the setting UNIT. When you do
not want to save the change, wait for approximately 20 seconds or press and hold the
PROG/ENTER key for approximately 3 seconds.
Action
Result
Remark
1
Momentarily, press the
PROG/ENTER key.
•The PROG indicator blinks.
•The engineering unit L shows.
To access the setting.
2
Press the SELECT/▲ key to
select the next engineering
unit.
•The PROG indicator blinks.
•The engineering unit m3shows.
If you wait too long, the
program mode goes off and
changes are not saved, this
is normal behavior.
3
Press the SELECT/▲ key to
select the next engineering
unit.
•The PROG indicator blinks.
•The engineering unit US GAL
shows.
-
4
Press the CLEAR/► key to
select the previous
engineering unit
•The PROG indicator blinks.
•The engineering unit m3shows.
-
5
To confirm the changes:
Momentarily, press the
PROG/ENTER key.
•The PROG indicator goes off.
•The change is saved.
•The engineering unit m3shows.
If you do not press the
PROG/ENTER key to
confirm, your selection is not
saved.
To discard the changes:
Press and hold the
PROG/ENTER key for
approximately 3 seconds.
•The PROG indicator goes off.
•The change is discarded.
•The engineering unit L shows.
-

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3.1.2. SETUP MENU - SETTINGS
1
TOTAL
11
unit
L; m3; kg; lb; GAL; USGAL; bbl; no unit
12
decimals
0000000; 111111.1; 22222.22; 3333.333
13
K-Factor:
0.000010 - 9999999
14
decimals K-Factor
0 - 6
2
FLOW RATE
21
unit
mL; L; m3; mg; g; kg; ton; gal; bbl; lb; cf; rev; - - - - (no unit);
scf; n m3; nL; p
22
time
/sec; /min; /hour; /day
23
decimals
0000000; 111111.1; 22222.22; 3333.333
24
K-Factor
0.000010 - 9999999
25
decimals K-Factor
0 - 6
26
filter
0 - 99
27
period
0.1 - 99.9 seconds
3
DISPLAY
31
function
total; rate
32
light
0% (off); 20%; 40%; 60%;- 80%; 100% (full brightness)
4
POWER MAN
41
LCD new
fast; 1 sec; 3 sec; 15 sec; 30 sec; off
42
battery mode
operational; shelf
5
FLOWMETER
51
signal
npn; npn-lp; reed; reed-lp; pnp; pnp-lp; namur; coil-hi;
coil-lo; 8-1 DC; 12 DC; 24 DC
6
TEMPERATURE
61
display
°C; °F; K
62
no. of wires
2; 3
63
filter
01 - 99
7
PRESSURE
71
unit
mbar; bar; psi
72
span
0.000001 –9999999
73
decimals span
0 - 6
74
offset
0.001 - 9999999
75
filter
1 -99
76
calib-low
default; calibrate; calibrate set
77
calib-high
default; calibrate; calibrate set
8
FORMULA
81
equations type
EG - (fixed)
82
t-normal (temp)
0.00 - 9999999
83
p-normal (pressure)
0.000 - 9999999
84
c-normal (compress)
0 - 9999999
85
compressibility
0 - 9999999
9
ANALOG
91
output
disable; enable
92
rate-min
000.000 - 999999
93
rate-max
000.000 - 999999
94
cut-off
0.0 - 9.9%
95
tune-min
0 - 9999
96
tune-max
0 - 9999
97
filter
01 - 99
A
PULSE
A1
width
0.001 - 9.999
A2
decimals
0000000; 111111.1; 22222.22; 3333.333
A3
amount
0.001 - 9999999
B
COMMUNICATION
B1
speed
1200; 2400; 4800; 9600
B2
address
1 - 247
B3
mode
bus-rtu; bus-asc; off
C
OTHERS
C1
model
F126-P
C2
software version
nn:nn:nn
C3
serial no.
nnnnnnn
C4
password
0000 - 9999
C5
tag-nr
0000000 - 9999999

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3.1.3. EXPLANATION OF SETUP MENU 1 - TOTAL
UNIT
11
This setting is used to select the engineering unit for the indication of the total,
the accumulated total and the pulse output.
When you change the engineering unit, you must recalculate and
reprogram the K-factor for the (accumulated) total. When you
recalculate and reprogram the K-Factor, the history for
(accumulated) total is not correct anymore, because the
(accumulated) total is not recalculated. For future reference, best
practice is to make a note of the accumulated total before you
program the recalculated K-Factor.
DECIMALS
12
This setting is used to set the amount of digits behind the decimal point for the
(accumulated) total indication.
K-FACTOR
13
This setting is used to set the K-Factor for the total. With the K-Factor, the
flowmeter pulse signals are converted to a quantity. The K-Factor is based on the
number of pulses generated by the flowmeter per selected engineering unit, for
example per m3. A more accurate K-Factor (more decimals, as set in decimals
K-Factor) allows for a more accurate operation of the system.
Example 1: Calculating the K-Factor.
The flowmeter generates 2.4813 pulses per liter and the selected unit is m3. A
cubic meter consists of 1000 liter which gives 2.4813 pulses*1000 liter=2481.3
pulses per m3. So, the K-Factor is 2481.3. Enter for the Flowmeter K-Factor:
24813 and for the flowmeter K-Factor decimals: 1.
Example 2: Calculating the K-Factor.
The flowmeter generates 6.5231 pulses per gallon and the selected engineering
unit is gallons. So, the K-Factor is 6.5231. Enter for the Flowmeter K-Factor:
65231 and for the Flowmeter K-Factor decimals: 4.
When you recalculate and reprogram a new K-Factor, the history for
(accumulated) total is not correct anymore, because the
(accumulated) total is not recalculated. For future reference, best
practice is to make a note of the accumulated total before you
program the recalculated K-Factor.
DECIMALS K-FACTOR
14
This setting is used to set the amount of digits behind the decimal point for the
K-Factor.
3.1.4. EXPLANATION OF SETUP MENU 2 - FLOW RATE
The settings for total and flow rate are entirely separate. In this way, different engineering units can
be used for each e.g. cubic meters for total and liters for flow rate.
UNIT
21
This setting is used to select the engineering unit for the indication of the flow
rate.
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 K-Factor has
to be adapted as well; the calculation is not done automatically.
TIME
22
This setting is used to set the time unit for the flow rate calculation. Note that the
flow rate is given in engineering unit/time unit, e.g. liters/minute (l/min).
When you change this setting, also recalculate and change the settings
for the analog rate-min and analog rate-max.
DECIMALS
23
This setting is used to set the amount of digits behind the decimal point for the
flow rate indication.
K-FACTOR
24
This setting is used to set the K-Factor for the flow rate. With the K-Factor, the
flowmeter pulse signals are converted to a quantity. The K-Factor is based on the
number of pulses generated by the flowmeter per selected engineering unit, for
example per m3. A more accurate K-Factor (more decimals, as set in decimals
K-Factor) allows for a more accurate operation of the system.
DECIMALS K-FACTOR
25
This setting is used to set the amount of digits behind the decimal point for the
K-Factor.

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FILTER
26
This setting is used to stabilize the flow rate reading. 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 calculated flow rate and the last average value.
The higher the filter level, the longer the response time on a value change
will be. In practice it is best to use trial and error to find the best setting for
your application.
PERIOD
27
This setting is used to calculate the flow rate by counting the number of
pulses within a certain time, for example 1 second. The longer the time the
more accurate the flow rate will be.
•this setting does influence the update time for the analog output directly.
If the output response is too slow, decrease the number of pulses.
•the shorter the update time, the higher the power consumption of the
unit will be (important for battery powered applications).
3.1.5. EXPLANATION OF SETUP MENU 3 - DISPLAY
FUNCTION
31
This setting can be set to display total or rate.
•When 'total' is selected, simultaneously, total is shown with the large
digits and flow rate with the smaller digits. When SELECT is pressed,
the accumulated total is shown temporarily.
•When 'rate' is selected, only flow rate will be shown with the large digits
together with its measuring unit. When SELECT is pressed, the total
and the accumulated total are shown temporarily.
LIGHT
32
The backlight brightness can be adjusted from 0% (off) to 100% (full
brightness) in steps of 20%.
When the F126-P is only loop powered, the backlight is disabled. An
external power supply is required to supply the backlight.
3.1.6. EXPLANATION OF SETUP MENU 4 - POWER MANAGEMENT
When used with the internal battery option (type PB/PC), the user can expect reliable measurement
over a long period of time. The F126-P 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 refresh rate, 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.
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.
Example battery life-time with a coil pick-up:
•1kHz pulse and FAST update: about 2 years;
•1kHz pulse and 1 sec update: about 5 years.
BATTERY MODE
42
The F126-P has two modes: operational or shelf.
After "shelf" has been selected, the F126-P can be stored for several years; it will
not process the sensor 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 F126-P again, press the SELECT/key two times.

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3.1.7. EXPLANATION OF SETUP MENU 5 - FLOWMETER
SIGNAL
51
With this setting the type of flowmeter output is selected. The settings with
LP (low-pass) filter are used to apply a build-in noise reduction.
Selections "active pulse" offer a detection level of 50% of the supply
voltage.
TYPE OF SIGNAL
EXPLANATION
RESISTANCE
FREQ. / mV
REMARK
NPN
NPN input
100 kΩ pull-up
max. 6 kHz.
(open collector)
NPN-LP
NPN with low pass filter
100 kΩ pull-up
max. 1.2 kHz.
(open collector)
less sensitive
REED
Reed-switch input
1 MΩ pull-up
max. 600 Hz.
REED-LP
Reed-with low pass filter
1 MΩ pull-up
max. 120 Hz.
Less sensitive
PNP
PNP input
100 kΩ pull-down
max. 6 kHz.
PNP-LP
PNP with low pass filter
100 kΩ pull-down
max. 1.2 kHz.
Less sensitive
NAMUR
NAMUR input
820 Ω pull-down
max. 4 kHz.
External power
required
COIL-HI
High sensitive coil input
-
min. 20 mVpp
Sensitive for
interference!
COIL-HI (option ZF)
min. 10 mVpp
COIL-HI (option ZG)
min. 5 mVpp
COIL-LO
Low sensitive coil input
-
min. 80 mVpp
Normal
sensitivity
8-1 DC
Active pulse input
detection level 8.2V DC
3.9 kΩ
max. 10 kHz.
External power
required
12 DC
Active pulse input
detection level 12V DC
4 kΩ
max. 10 kHz.
External power
required
24 DC
Active pulse input
detection level 24V DC
3 kΩ
max. 10 kHz.
External power
required
3.1.8. EXPLANATION OF SETUP MENU 6 - TEMPERATURE
DISPLAY
61
This setting is used to program the temperature unit which is shown to the
operator. This setting does not influence the actual calculations.
NO. OF WIRES
62
This setting is used to program the number of wires for the PT100
sensors.
FILTER
63
The analog output signal of a sensor represents the actual temperature.
This signal is measured several times a second. The value measured is a
"snap-shot" of the real temperature 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.
Filter value
Response time on step change of analog value. (Time in seconds).
influence
50%
75%
90%
99%
01
filter disabled
filter disabled
filter disabled
filter disabled
10
14 sec
28 sec
44 sec
88 sec
20
28 sec
56 sec
90 sec
180 sec
30
42 sec
82 sec
136 sec
272 sec
50
70 sec
136 sec
228 sec
456 sec
75
104 sec
208 sec
344 sec
688 sec
99
136 sec
274 sec
454 sec
908 sec

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3.1.8. EXPLANATION OF SETUP MENU 7 - PRESSURE
MEASURING UNIT
71
This setting is used to program the temperature unit which is shown to the
operator. This setting does not influence the actual calculations.
SPAN
72
With this setting, the measurement range of the (0)4-20mA pressure
sensor is determined according the selected measurement unit.
Example Calculating the span for pressure.
The sensor generates the minimum signal (e.g.4mA) at a pressure of 2.5
bar and the maximum signal (e.g. 20mA) is generated at 50 bar. Then the
span is 47.5 bar. Enter for Span: "0004750" if decimals for span are two.
DECIMALS SPAN
73
This setting is used to set the amount of digits behind the decimal point for the
pressure span.
OFFSET
74
Calculations are based on absolute pressures.
The flow computer must know the measured pressure at minimum signal.
(2.5 bar in above example)
•When using a gauge type pressure indicator enter an offset to
compensate environmental pressure (e.g. air pressure, 1.013 bar)
•When working with a “fixed” pressure, enter the fixed line pressure here
and make sure that the span is set to zero.
FILTER
75
This setting is used to stabilize the flow rate reading. 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 calculated flow rate and the last average value. The higher the filter
level, the longer the response time on a value change will be. In practice it
is best to use trial and error to find the best setting for your application.
FILTER VALUE
RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE.TIME IN SECONDS
influence
50%
75%
90%
99%
01
filter disabled
filter disabled
filter disabled
filter disabled
03
0.5 sec
1.0 sec
1.5 sec
3 sec
05
1.0 sec
1.8 sec
2.8 sec
5.3 sec
10
1.8 sec
3.5 sec
5.6 sec
11 sec
20
3.5 sec
7.0 sec
11 sec
23 sec
50
8.8 sec
17 sec
29 sec
57 sec
99
17 sec
34 sec
57 sec
114 sec
CALIBRATE LOW
76
This setting is used 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 flow rate
zero. This function will measure the real output value at flow zero.
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:
▪CALIB: 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.
CALIBRATE HIGH
77
This setting is used to calibrate the input value for 20mA as the signal
from the flowmeter might not be exact 20.0 mA at maximum flow rate.
This function will measure the real output value at maximum flow rate.
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:
▪CALIB: 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.

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3.1.9. EXPLANATION OF SETUP MENU 8 - FORMULA
EQUATIONS TYPE
81
This setting shows the formula. The type EG stands for Equations Gas -
flow computer for corrected gas volume.
The formula used: Qnormal = Q * (P/Pnormal) * (Tnormal/T) * (Cnormal/C)
Qnormal = calculated volume at normal conditions
Q = measured volume
P = line pressure
Pnormal = normal pressure
Tnormal = normal temperature
T = line temperature
Cnormal = normal compressibility factor
C = compressibility
T-NORMAL
(TEMPERATURE)
82
Program here the reference temperature Tnormal in degrees Kelvin (K).
In most applications, the gas volume is calculated at 0°C which is
273,15K.
P-NORMAL
(PRESSURE)
83
Program here the reference pressure Pnormal in the selected pressure unit.
In most applications, the volume is calculated at 1.013 Bar.
C- NORMAL
(COMPRESSABILITY
FACTOR)
84
Program here the compressibility factor for the gas at reference
conditions. With the value of 0, the Cnormal is disabled.
COMPRESSABILITY
FACTOR
85
Program here the compressibility factor for the gas at operating
conditions. The C factor indicates how a “real” gas behaves with respect
to an “ideal” gas which exactly obeys the “general gas law”
(PxV/T=constant) where the compressibility factor (C) is 1.
With the value of 0, the compressibility factor is disabled.
3.1.9. EXPLANATION OF SETUP MENU 9 - ANALOG
A linear 4-20mA signal (option AB: 0-20mA or option AU: 0-10V) output signal is generated that
represents the flowrate. The settings for the flow rate influence the analog output directly. The
relationship between the flow rate and the analog output is set with the following settings.
OUTPUT
91
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
3.5mA signal will be generated.
RATE-MIN
92
Enter here the flow rate at which the output should generate the minimum
signal (0)4mA or 0V - in most applications at zero flow. The number of
decimals shown depend upon setup 23. The engineering units/time (e.g.
L/min) are dependent upon setup 21 and 22.
RATE-MAX
93
Enter here the flow rate at which the output should generate the maximum
signal (20mA or 10V) - in most applications at maximum flow. The number
of decimals shown depend upon setup 23. The engineering units/time (e.g.
L/min) are dependent upon setup 21 and 22.
CUT-OFF
94
To ignore leakage of the flow for example, a low flow cut-off can be set as
a percentage of the full range of 16mA, 20mA or 10V.
When the flow is less than the required rate, the current will be the
minimum signal (0)4mA or 0V.
Example: Calculate the cut-off.
Rate-min: 0L/min [4mA], Rate-max: 100 L/min [16mA], Cut-off: 2%
Required rate [L/min]: (rate-max - rate-min)*cut-off: (100-0)*2%=2.0L/min
Output [mA]: rate-min + (rate-max*cut-off): 4+(16*2%)=4.32mA

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TUNE-MIN
95
The (0)4mA or 0V value can be tuned precisely with this setting. The initial
minimum analog output value is (0)4mA or 0V. 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 4mA (0mA or 0V). 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)4mA
or 0V represents the maximum flow rate and the 20mA or 10V represents
the minimum flow rate.
TUNE-MAX
96
The 20mA or 10V value can be tuned precisely with this setting. The initial
maximum analog output value is 20mA or 10V 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 20mA or 10V. 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)4mA
or 0V represents the maximum flow rate and the 20mA or 10V represents
the minimum flow rate.
FILTER
97
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 flow rate
can be obtained.
The filter principal is based on three input values: the filter level (01-99),
the last calculated flow rate and the last average value. The higher the
filter level, the longer the response time on a value change will be.
3.1.11. EXPLANATION OF SETUP MENU A - PULSE
One transistor or mechanic relay output is available as scaled pulse output according to the total.
WIDTH
A1
The pulse width determines the time that the output will be active; in other
words the pulse duration. Value “zero” will disable the pulse output.
The pulse signal always has a 50% duty cycle, hence the minimum time
between the pulses is equal to the pulse width setting. If the frequency
should go out of range –when the flow rate increases for example –an
internal buffer will be used to “store the missed pulses”: As soon as the
flow rate slows down, the buffer will be “emptied”.
It might be that pulses will be missed due to a buffer-overflow, so it is
advised to program this setting within its range!
DECIMALS
A2
This setting is used to set the amount of digits behind the decimal point for the
amount.
AMOUNT
A3
A pulse will be generated every time a certain quantity is added to the
total. Enter this quantity here while taking the decimals for pulse into
account.

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3.1.12. EXPLANATION OF SETUP MENU B - COMMUNICATION (OPTION)
This product is designed for the connection to a communication network. Products with a
communication option do not include cyber security functions. Fluidwell cannot take any
responsibility for the cyber security, omissions or errors in the communication safety. To maintain a
secure operation, automation and control, it is the sole responsibility of the owner to install and
manage the appropriate safety measures to protect the network, the product and the communication
against any kind of security breaches.
The functions described below deal with hardware that is 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.
SPEED
B1
This setting is used to set the Baudrate.
ADDRESS
B2
This setting is used to set the communication address for the F126-P.
MODE
B3
This setting is used to set the Modbus transmission mode. Select OFF to disable
the communication.
3.1.13. EXPLANATION OF SETUP MENU C - OTHERS
For support and maintenance it is important to have information about the characteristics of the F126-P. Your
supplier will ask for this information when support is required.
MODEL
C1
This setting shows the model name.
SOFTWARE VERSION
C2
This setting shows the version number of the firmware (software).
SERIAL NO.
C3
This setting shows the serial number.
PASSWORD
C4
This setting is used to set a password (pin code) to limit the access for the
setup menu. Only persons who know the pin code can access the setup
menu. The pin code 0000 disables the pin code to allow for access by any
person.
TAG-NR
C5
This setting is used to set a tag number for the F126-P.

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Page 18
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.
•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" at the
front of this manual.
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 F126-P onto a solid structure to avoid
vibrations.
For use in Safe and Hazardous 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:
Intrinsically safe:
IS
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:
Intrinsically safe:
-40 °C to +70 °C, -40 °F to +158 °F
(limited to +50 °C, 122 °F for EPL Da)
Ordinary locations:
-40 °C to +80 °C, -40 °F to +176 °F
Altitude:
up to 2000 m

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Page 19
4.3. DIMENSIONS- ENCLOSURE
Aluminum and stainless enclosures (where “H” turns to “HS” for stainless, e.g. HA →HSA):
Fig. 5: Aluminum and stainless enclosures - Dimensions
Optionally, metal enclosures are available with a 15 mm, 0.6” deeper rear cover.
75 mm (2.95")
130 mm (5.12") 112 mm (4.40")
120mm(4.72”)
M20 x 1,5
PG9 PG9
30mm 30mm
M20 x 1,5
M16 x 1,5 M16 x 1,5
30mm 30mm
M20 x 1,5
M20 x 1,5 M20 x 1,5
25mm 25mm
1/2"NPT
0.9”
3x 1/2"NPT
0.12" 0.12"
HA
HM
HN
HO
HP
HT
HU
6 x M12
12mm 12mm
24mm24mm
36mm
36mm
14mm17mm
115 mm (4.53”)
HB
29.1 mm (1.15”)
31 mm
(1.22”)
HZ
4x M20 x 1,5
15 15
HV
2323
16
mm
1/2"NPT 1/2"NPT
25mm 25mm
22,5mm
HL
22,5mm22,5mm22,5mm22,5mm
0.9”
15
60mm(2.36”)
98mm(3.86”)

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Page 20
Fig. 6: GRP enclosures - Dimensions
75 mm (2.95")
130 mm (5.12") 112 mm (4.40")
60 mm (2.36")
120 mm (4.72")
HD
HK
HK back box:
(flat bottom)
HE
HF
HG
HH
D=12mm
12mm 12mm
24mm24mm
36mm
36mm
14mm 17mm
22,5mm
30mm 30mm
D=16mm
D=20mm
0.9"
D=22mm (0.866")
22,5mm
25mm 25mm
D=20mm D=20mm
D=16mm
HC
75 mm (2.95") 118 mm (4.65”)
104 mm (4.09”)
HJ
0.9”
0.12” 0.12”
3x D=22mm (0.866”)
115 mm (4.53”)
98 mm (3.86”)
29.1 mm (1.15”)
31 mm
(1.22”)