Introduction; System Description Of The F490-A-Pl - Fluidwell F Series Manual

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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.
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 is displayed with the large 26mm (1") digits while the smaller 8mm (0.31") digits
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.
Fig. 1: Application example of the F490-A-PL.
FW-F490-A-PL_v0504_06_EN.docx
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