Fluidwell F112-A, Manual

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FW_F112A_v1702_02_EN
Page 5
1. INTRODUCTION
1.1. SYSTEM DESCRIPTION
Functions and features
The flow rate / totalizer model F112-A is a microprocessor driven instrument designed to display the
flow rate, the total and the accumulated total.
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),

ability to process all types of flowmeter signals;

transmitting possibilities with analog, pulse and communication outputs;

several mounting possibilities with GRP or aluminum enclosures for industrial surroundings.
Flowmeter input
This manual describes the unit with a (0)4-20mA input from the flowmeter. Other versions are
available to process pulse signals.
One flowmeter with a (0)4-20mA output can be connected to the F112-A. To power the sensor,
several options are available.
Standard outputs

Pulse output to transmit a pulse that represents a linearized 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
The F112-A is designed for use in many types of applications. For that reason, a setup menu is
available to program the F112-A according to your specific requirements.
The setup includes several important features, such as span, 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, panel -mount, wall-mount and weather-proof enclosures,
flame proof enclosure and LED backlight.