Fluidwell F Series User manual

F490-A-PL
LOOP POWERED INDICATOR
Signal input sensor: 4-20mA.
Options: Backlight and Intrinsic Safety
F-Series - Field mounted indicators for safe and hazardous areas.
More info: www.fluidwell.com/fseries

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FW-F490-A-PL_v0504_06_EN.docx
SAFETY INSTRUCTIONS
•Any responsibility is lapsed if the instructions and procedures as described in this manual
are not followed.
•LIFE SUPPORT APPLICATIONS: The F490-A-PL 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 F490-A-PL, the installer has to discharge himself by touching a well-
grounded object.
•The F490-A-PL must be installed in accordance with the EMC guidelines (Electro
Magnetic Compatibility).
•Connect a proper grounding to both the front and rear (where applicable) cover of the
aluminum or stainless steel casings, as indicated.
•Intrinsically Safe applications: follow the instructions as mentioned in Chapter 5. Refer to
certificates KEMA 03ATEX1075 X and IECEx KEM 08.0007X.
For use in Canada or the US refer to Control Drawing CD1104.11 and related certificate
CSA.14.70002331.
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 loc
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 F490-A-PL 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 rated supply 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 F490-A-PL 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
classification of the enclosure (see manufacture's plate and chapter 4.2.).
•If the operator detects errors or dangers, or disagrees with the safety precautions taken,
he should inform the owner or principal responsible.
•The local labor and safety laws and regulations must be adhered to.

FW-F490-A-PL_v0504_06_EN.docx
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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". 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 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 F490-A-PL 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 damage of the F490-A-PL or connected instruments.
A "caution !" indicates actions or procedures which, if not performed correctly, may lead to
personal injury or incorrect functioning of the F490-A-PL 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 [e-mail].
Hardware version : 4B03.01.xx
Software version : 03.01.4x
Manual : FW-F490-A-PL_v0504_06_EN.docx
© Copyright 2022 : 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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FW-F490-A-PL_v0504_06_EN.docx
CONTENTS MANUAL
Safety instructions ................................................................................................................................2
Disposal of electronic waste.................................................................................................................2
Safety rules and precautionary measures............................................................................................2
About the operation manual .................................................................................................................3
Warranty and technical support............................................................................................................3
Contents manual...................................................................................................................................4
1Introduction ..............................................................................................................................5
1.1 System description of the F490-A-PL......................................................................... 5
2Operational ..............................................................................................................................6
2.1 General ....................................................................................................................... 6
2.2 Control panel............................................................................................................... 6
2.3 Operator information and functions............................................................................. 6
3Configuration............................................................................................................................8
3.1 Introduction ................................................................................................................. 8
3.2 Programming SETUP-level......................................................................................... 8
3.2.1 Entering SETUP-level................................................................................................. 8
3.2.2 Navigating through SETUP-level................................................................................ 8
3.2.3 Programming sequence.............................................................................................. 9
3.2.4 Returning to Operator-level....................................................................................... 10
3.3 SETUP Menu............................................................................................................10
3.3.1 Explanation of SETUP-menu 1: Display...................................................................11
3.3.2 Explanation of SETUP-menu 2: Sensor ...................................................................12
3.3.3 Explanation of SETUP-menu 3: Others....................................................................13
4Installation..............................................................................................................................14
4.1 General directions..................................................................................................... 14
4.2 Installation / surrounding conditions.......................................................................... 14
4.3 Handling the F-Series enclosure............................................................................... 15
4.3.1 Identification.............................................................................................................. 15
4.3.2 Opening / Removing the cover .................................................................................16
4.3.3 Closing / Replacing the cover...................................................................................16
4.4 Mechanical installation.............................................................................................. 17
4.4.1 Dimensions Aluminum and stainless steel enclosures..........................................17
4.4.2 Dimensions Non-metallic enclosures.....................................................................18
4.4.3 Mounting ................................................................................................................... 19
4.5. Electrical installation .................................................................................................20
4.5.1 Electrical safety......................................................................................................... 20
4.5.2 Earth / ground connections.......................................................................................20
4.5.3 Field wiring connections............................................................................................ 21
4.5.4 Power supply wiring..................................................................................................21
4.6 Terminal connectors ................................................................................................. 21
4.6.1 Terminal 1: Ground / PE ........................................................................................... 21
4.6.2 Terminal 2-3: Signal shield link................................................................................. 21
4.6.3 Terminal 4-5: 4-20mA signal input and Power supply - Type PL .............................22
4.6.4 Terminal 6-7: Signal shield link................................................................................. 22
4.6.5 Terminal 9-10: Backlight - Type ZB ..........................................................................22
5Intrinsically safe applications .................................................................................................23
5.1 Identification.............................................................................................................. 23
5.2 Electrical installation in hazardous area ................................................................... 24
5.2.1 General information and instructions........................................................................ 24
5.2.2 Installations based on ATEX or IECEx certificate.....................................................25
5.2.3 Installations based on CSA certificate ...................................................................... 27
6Maintenance ..........................................................................................................................29
6.1 General directions..................................................................................................... 29
6.2 Repair........................................................................................................................ 29
Appendix A: Technical specification...................................................................................................30
Appendix B: Problem solving..............................................................................................................32
Appendix C: Declaration of Conformity ..............................................................................................33
Index of this manual............................................................................................................................34
List of figures in this manual...............................................................................................................34

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1 INTRODUCTION
1.1 SYSTEM DESCRIPTION OF THE F490-A-PL
Functions and features
The multi purpose indicator model F490-A-PL is a loop powered microprocessor driven instrument,
designed to display process information from a 4-20mA signal, like pressure, temperature,
percentage etc.
This product has been designed with a focus on:
•Low voltage drop;
•Intrinsic safety (type XI) for use in hazardous applications;
•For intrinsically safe applications: installation as a simple apparatus;
•Several mounting possibilities with GRP, aluminum or stainless steel enclosures for industrial
surroundings and off-shore applications.
Sensor input
This user manual describes model F490-A-PL with an analog 4-20mA input type "-A version".
One active 4-20mA current loop can be connected to the F490-A-PL.
The F490-A-PL is powered from the loop (sensor signal) and does not require any additional
external power supply.
Fig. 1: Application example of the F490-A-PL.
Configuration of the unit
The F490-A-PL has been designed to be implemented in many types of applications. For that
reason, a SETUP-level is available to configure your F490-A-PL according to your specific
requirements.
It includes several important features, such as Span, measurement units, display options etc. All
setting are stored in EEPROM memory and will not be lost in the event of power failure.
Display information
The unit has a large transflective LCD with all kinds of symbols and digits to display measuring units,
status information and key-word messages.
The actual values 
display the measuring unit and messages.
The Piegraph is percentage-wise related to the span.
Options
The following options are available: intrinsic safety, weather- or salt proof enclosures and LED
backlight.

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FW-F490-A-PL_v0504_06_EN.docx
2 OPERATIONAL
2.1 GENERAL
•The F490-A-PL 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 F490-A-PL. This instruction is meant for users /
operators.
2.2 CONTROL PANEL
The control panel has three keys. The following keys are available:
Fig. 2: Control Panel.
Functions of the keys
PROG-key
This key is used to gain access to SETUP-level; please read chapter 3.
SELECT-key
This key is used to SELECT actual mA value, 0% and 100% value.
The arrow-key is used at SETUP level to increase a value after PROG has been
pressed or to configure the unit; please read chapter 3.
CLEAR-key
This key has no function at Operator level.
The arrow-key is used at SETUP level to select a digit after PROG has been
pressed; please read chapter 3.
2.3 OPERATOR INFORMATION AND FUNCTIONS
In general, the F490-A-PL will always act at Operator level.
Fig. 3: Example of display information during process.

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For the Operator, the following functions are available (if activated):
•Display value and measuring unit
This is the main display information of the F490-A-PL. After selecting any other information, it
will always return to this main display automatically.
•Display actual mA value (if activated)
After pressing SELECT, the actual input current (mA) will be displayed.
•Display 0% / 100% (if activated)
After pressing SELECT a few times, the 0% value and 100% value will be displayed.
•Under range / over range
- If the input current is in------
- If the input current is in-between 3.75mA and 4mA the value corresponding to 4mA will be
displayed.
- If the input current is in-between 20 mA and 22mA the calculated value will represent the
extrapolated span value.
- If the input curre999999

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FW-F490-A-PL_v0504_06_EN.docx
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. Take
careful notice of the "Safety rules, instructions and precautionary measures" in the front
of this manual.
•The F490-A-PL 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 enclosure 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 ENTERING SETUP-LEVEL
Configuration of the F490-A-PL is done at SETUP-level, which can be reached at all times while the
F490-A-PL remains fully operational. At SETUP-level the display will deactivate the RUN indicator
and activate the SETUP indicator.
Use the control panel to access SETUP-level
PROG-key
To enter SETUP-level, press the PROG-key for 7 seconds at OPERATOR-level.
During this time, the symbol SETUP will be displayed.
When SETUP-level is entered, a password might be required to continue. You can
enter the password by following the procedure for programming values as described in
the following paragraphs.
A password may be required to enter SETUP.
Without this password access to SETUP is denied.
3.2.2 NAVIGATING THROUGH SETUP-LEVEL
Each function has a unique menu-number, which is displayed below the SETUP indicator at the
bottom of the display. The menu-number is a combination of two figures, e.g. 1.2. The first number
indicates the function-group and the second number indicates the function. Additionally, each
function and function-group is expressed with a keyword.
Fig. 4: SETUP matrix structure
1.1
1.2
2.1.
2.1
1.3
2.2
3.1
3.
FUNCTION GROUP
FUNCTION
FW-4100-000001-001-EN

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

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FW-F490-A-PL_v0504_06_EN.docx
3.2.4 RETURNING TO OPERATOR-LEVEL
When all settings are configured correctly, the unit can be returned to OPERATE-level.
Please keep a record of all settings for later reference.
Use the control panel to return to OPERATE-level
PROG-key
In order to return to the operator level, press the PROG-key for three seconds.
When no keys are pressed for 2 minutes, SETUP-level will be left automatically.
3.3 SETUP MENU
The following configuration settings are available at SETUP level:
SETUP FUNCTIONS AND VARIABLES
1
DISPLAY
1.1
UNIT
L NL mL M3 AM3 NM3 mg g Kg TON OZ GAL
USGAL IGAL lb bbLcf CUFt scf p rev °C °F K
% M mm CM mtr inch Ft SQFt Yd PSI psig 
mbar MbARG bar barg bara PA PAG KPA KPAG 
MPA INHG mmHg mmH2O MH2O INH2O Ph mA A
uS PPM RPM no unit
1.2
TIME UNIT
/---- (no unit) - /sec - /s - /min - /m - /hr - /h - /day - /d
1.3
DECIMALS
0 - 1 - 2 - 3 - 4 - 5 (Ref: displayed value)
1.4
OFFSET
-99.999 to +199.999
1.5
SPAN
0.00001 to 199,999 unit/time-unit
1.6
DIRECTION
reverse - normal
1.7
CURRENT
on - off
1.8
PERCENTAGE
on - off
1.9
PIEGRAPH
on - off
2
SENSOR
2.1
FORMULA
interpolation, square root
2.2
FILTER
00 - 99
2.3
TUNE MIN (4mA)
default - set - calibrate
2.4
TUNE MAX (20mA)
default - set - calibrate
3
OTHERS
3.1
MODEL
F490
3.2
SOFTWARE VERSION
03-01-4x
3.3
SERIAL NO.
3.4
PASSWORD
0000 - 9999
3.5
TAGNUMBER
0000000 - 9999999

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3.3.1 EXPLANATION OF SETUP-MENU 1: DISPLAY
1
DISPLAY
1.1
UNIT
SETUP 1.1 determines the measurement unit to be displayed.
The following units can be selected:
L NL mL M3 AM3 NM3 mg g Kg TON OZ GAL 
USGAL IGAL lb bbLcf CUFt scf p rev °C °F K 
% M mm CM mtr inch Ft SQFt Yd PSI psig mbar
MbARG bar barg bara PA PAG KPA KPAG MPA 
INHG mmHg mmH2O MH2O INH2O Ph mA A uS 
PPM RPM no unit
Alteration of the measurement unit will have consequences for other
SETUP-level values.
Please note that the Span has to be adapted as well; any recalculation is
not done automatically.
1.2
TIME UNIT
A time unit can be display for flowrate for example.
Following can be selected:
/----- /SEC /S /MIN /M /HR /H /DAY /D
-----f a time unit.
1.3
DECIMALS
This setting determines the number of digits following the decimal point.
The following can be selected:
000000 - 11111.1 - 222.22 - 33.333 - 4.4444 - .55555
1.4
OFFSET
The unit need to know the value at minimum signal.
The following range can be programmed:
-99,999 to + 199,999
The minus for a negative value can be selected by pressing the center
and right button simultaneously.
1.5
SPAN
With the span, the sensor signal is converted to a certain value.
The span is determined on the basis of the selected measurement and
time unit at 20mA.
The more accurate the span, the more accurate the functioning of the
system will be. The following range can be programmed:
0.00001 to + 199,999
Calculation example for span in a level measurement application:
Let us assume that the sensor generates 4mA at a level of 200.00
USGAL and 20mA at a level of 652.31 USGAL, the selected unit is

The span is 652.31-200=452.31.
Enter: 
----

SETUP 1.4: "200.00"

1.6
DIRECTION
If the display is required to increase in value as the input current
increases.

input current rises.
1.7
CURRENT

operator.
1.8
PERCENTAGE

sensor signal) and 100% (value at maximum sensor signal). )
1.9
PIEGRAPH
The pie graph (bar graph) displayed at operator level is percentage-wise
related to the input signal: minimum signal is 0% (setup 2.3) and
maximum signal is 100% (setup 2.4). )
With this function, the bargraph can be enabled / disabled.

Page 12
FW-F490-A-PL_v0504_06_EN.docx
3.3.2 EXPLANATION OF SETUP-MENU 2: SENSOR
2
SENSOR
2.1
FORMULA
The F490-A-PL can process the 4-20mA signal in two ways:
▪Interpolation - the signal is processed linear: V = S x I
▪Square root - for differential pressure: V = S I
where:
V = Value: the calculated value
S = Span: the value at maximum signal (Span). The Span is
programmed with setting 1.5.
I = Input: the scaled analogue input value; in these formulas value 0
(zero) for 4mA and value 1 (one) for 20mA.
2.2
FILTER
The analogue output signal of a sensor does mirror a value. This value is
measured several times a second by the F490-A-PL. The value measured
is a "snap-shot" of the real signal 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 analogue 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 their response times are indicated:
RESPONSE TIME ON STEP CHANGE OF ANALOG VALUE.TIME IN SECONDS
FILTER VALUE
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
FILTER VALUE (CNT)
50% influence
75% influence
90% influence
99% influence
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
2.3
TUNE MIN / 4MA
With this setting it is possible to calibrate the input value for 4mA as the
signal from the sensor might not be exact 4.0 mA at minimum signal.
▪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:
▪CALIB (calibrate): with this setting, the input will be calibrated with the
actual "4mA" value. After pressing enter, TUNED 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.
▪DFLT.: with this setting, the factory value is re-installed.
▪SET: to select the last calibrated value.
-side-
desired, so 4mA at maximum value for example! Also, any value is
allowed with its range of 4-20mA.

FW-F490-A-PL_v0504_06_EN.docx
Page 13
2.4
TUNE MAX /
20MA
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 signal.
▪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:
▪CALIB (calibrate): with this setting, the input will be calibrated with the
actual "20mA" value. After pressing enter, TUNED 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.
▪DFLT.: with this setting, the manufactures value is re-installed.
▪SET: to select the last calibrated value.
-side-
desired, so 20mA at minimum value for example! Also, any value is
allowed with its range of 4-20mA.
3.3.3 EXPLANATION OF SETUP-MENU 3: OTHERS
3
OTHERS
3.1
TYPE OF MODEL
For support and maintenance it is important to have information about the
characteristics of the F490-A-PL.
Your supplier will ask for this information in the case of a serious
breakdown or to assess the suitability of your model for upgrade
considerations.
3.2
VERSION
SOFTWARE
3.3
SERIAL NUMBER
3.4
PASS CODE
All SETUP-values can be pass code protected.
This protection is disabled with value 0000 (zero).
Up to and including 4 digits can be programmed, for example 1234.
3.5
TAGNUMBER
For identification of the unit and communication purposes, a unique tag
number of maximum 7 digits can be entered.

Page 14
FW-F490-A-PL_v0504_06_EN.docx
4 INSTALLATION
4.1 GENERAL DIRECTIONS
•Mounting, electrical installation, start-up and maintenance of this 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 F490-A-PL 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.
•Make sure that the measuring system is correctly wired up according to the wiring
diagrams. Protection against accidental contact is no longer assured when the enclosure
cover is removed or panel or cabinet has been opened (danger from electrical shock).
•The enclosure, panel or cabinet 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 F-Series 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 NEMA rating:
IP65 (panel mount), IP67 (field mount) and NEMA 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 III (energy limited)
Over-voltage category:
II
Pollution degree:
2 (internal environment), 3 (external environment)
Ambient:
-30 °C to +70 °C, -22 °F to +158 °F
Altitude:
up to 2000 m
For use in Hazardous Areas, see additional details in Section 5 of this manual.

FW-F490-A-PL_v0504_06_EN.docx
Page 15
4.3 HANDLING THE F-SERIES ENCLOSURE
4.3.1 IDENTIFICATION
For Intrinsically Safe applications: Installation and identification labels are shown in chapter 5.
Identification label
To identify your F4-Series device, all field mount enclosures have a weatherproof identification label
placed on the outside of the unit.
Fig. 5: Identification Example of F4-Series identification label (safe area)
Installation label
A second label is located on the inside and shows additional installation data. For panel mount
enclosures, the outside label is not available, so the inside label also serves as identification label.
After installation, the inside label is only visible from the rear side of the panel.
Fig. 6: Identification Example of F4-Series installation label (safe area)
Serial number and year of production
The serial number can be reviewed on the identification label or in
SETUP-menu Others. The production date is either shown separately on
the label or indicated by the first 4 digits of the serial number
representing year and week number (YYWW).

Page 16
FW-F490-A-PL_v0504_06_EN.docx
4.3.2 OPENING / REMOVING THE COVER
To open the F-Series enclosure, the front cover needs to be removed. Please follow this procedure:
1. If necessary, clean the enclosure with an anti-static cloth
made damp with a mild soap solution. Wait for the
enclosure to dry before opening.
2. While loosening the screws, hold on to the front cover to
prevent it from falling down.
3. Unscrew all 4 screws from the front of the enclosure.
4. Carefully take the front cover away from the rear cover,
minding that the wiring stays intact.
5. Depending on the work to be done, all terminal
connectors can be removed from their mating parts and
the front cover is now completely separate.
4.3.3 CLOSING / REPLACING THE COVER
To replace the cover on the F-Series enclosure, follow this procedure:
1. Re-insert all terminals to their original position.
2. Carefully position the front cover onto the rear cover, making sure
that the gasket falls nicely into the gutter of the rear cover.
3. Replace all 4 screws into the front cover.
4. Fasten all 4 screws in an alternating way so that the front cover is
placed evenly across the edge of the rear cover.
Tighten the 4 screws with the torque value for the type of enclosure
as specified in following table:
Plastic enclosure: 1 Nm per screw
Aluminum enclosure: 1 Nm per screw
Aluminum w. extended back enclosure: 1 Nm per screw
Stainless steel enclosure: 2 Nm per screw
5. The F-Series in now ready to be returned to service.

FW-F490-A-PL_v0504_06_EN.docx
Page 17
4.4 MECHANICAL INSTALLATION
4.4.1 DIMENSIONS ALUMINUM AND STAINLESS STEEL ENCLOSURES
• → HSA).
•Aluminum 
Fig. 7: Dimensions Aluminum and Stainless Steel enclosures
75 mm (2.95")
130 mm (5.12") 112 mm (4.40")
60 mm (2.36")
120 mm (4.72")
M20 x 1,5
PG9 PG9
30mm 30mm
22,5mm
M20 x 1,5
M16 x 1,5 M16 x 1,5
30mm 30mm
22,50mm
M20 x 1,5
22,5mm
M20 x 1,5 M20 x 1,5
25mm 25mm
22,5mm
1/2"NPT
0.9"
3x 1/2"NPT
0.12" 0.12"
0.9"
HA
HM
HN
HO
HP
HT
HU
6 x M12
12mm 12mm
24mm24mm
36mm
36mm
14mm 17mm

98 mm (3.86)
HB

31 mm

HZ
4x M20 x 1,5
15 15
15
HV
2323
16
mm

Page 18
FW-F490-A-PL_v0504_06_EN.docx
4.4.2 DIMENSIONS NON-METALLIC ENCLOSURES
Fig. 8: Dimensions Non-metallic enclosures.
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”)

98 mm (3.86)

31 mm


FW-F490-A-PL_v0504_06_EN.docx
Page 19
4.4.3 MOUNTING
•When installed in an aluminum enclosure and a potentially explosive atmosphere
requiring apparatus of equipment protection level Ga and Da, the unit must be installed
such that, even in the event of rare incidents, an ignition source due to impact or friction
sparks between the enclosure and iron/steel is excluded.
•The use of aluminum enclosures in (hazardous area) mining installations is prohibited.
•Do not blend metal front covers with non-metallic rear covers, vice versa and / or cable
glands. A metal cover on a non-metallic rear cover could lead to ESD. A metal cable
gland in a non-metallic enclosure could invalidate isolation.
The enclosure can be installed by itself or with the aid of a mounting plate in the configurations
shown below. When the unit is installed on a wall or onto a meter, please use components and
installation techniques that are suitable for the used materials.
When using the mounting plate, please follow the instructions that came with the accessories.
Alternatively, the unit can be panel mounted by using only the front cover.
Wall mount by using the openings
on the (out)side of the rear cover.
Wall mount by using the mounting plate (accessory)
Meter mount by using one of the openings
in the bottom of the rear cover.
Pipe mount by using the mounting plate
with the bracket and hose clamps (accessory).
Panel mount by using only the front cover
Fig. 9: Mounting configurations.

Page 20
FW-F490-A-PL_v0504_06_EN.docx
4.5. ELECTRICAL INSTALLATION
•Electrostatic discharge (ESD) does inflict irreparable damage to electronics! Before
installing or opening the F490-A-PL, the installer has to discharge himself by touching a
well-grounded object.
•For reasons of ESD and safety, always ground the metal enclosure properly as indicated.
It is the responsibility of the installer to install, connect and test the Protective Earth
connections in accordance with the (inter)national Rules and Regulations.
•This chapter shows general information regarding the electrical installation of the
F490-A-PL. Chapter 5 gives additional specific information regarding Intrinsically safe
installation and overrules the information given in this chapter.
•The installation must comply with (inter)national requirements and local ordinances.
oWithin the European Union and the UK, all installations must comply with national
regulations.
oWithin Canada all field wiring must conform to Section 18-156 of the Canadian
Electrical Code for installations within Canada.
oWithin the United States all field wiring must conform to the National Electric Code,
NFPA 70, Article 501-4(b).
4.5.1 ELECTRICAL SAFETY
Please consult the table with environmental conditions and safety parameters shown at the
beginning of this chapter.
General directions:
•The F490-A-PL must be installed in accordance with EMC guidelines (Electro Magnetic
Compatibility).
•Use separate cable glands with effective IP67 / TYPE 4(X) seals for all wires.
•Unused cable entries: ensure that you fit IP67 / TYPE 4(X) plugs to maintain rating.
•Use a reliable ground connection for both the sensor, and if applicable, for the metal enclosure.
•Use effective screened cables for the input signal, and connect the shield to ground at the supply
or at the sensor side, whichever is appropriate to the application. Use the shield link terminals to
connect the incoming shield to the outgoing shield.
•Use wires with a cross section between 0.2mm2 and 2.5mm2.
4.5.2 EARTH / GROUND CONNECTIONS
When the F490-A-PL is supplied with a metal enclosure (aluminum or stainless steel), the enclosure
can be grounded if desired or required in accordance with national and local electrical codes.
Grounding also improves ESD sensitivity.
For this purpose, terminal 1 is used to ground the front cover of the enclosure.
To ground the metal rear cover (when field mounted), use the grounding stud located inside the
metal rear cover, as indicated in the image below. To connect the conductor, use a (not supplied)
M4 x 6mm screw with serrated washer, cable lug and washer (torque: 2 Nm).
Fig. 10: Grounding connection on rear cover of metal enclosure