F120 - Flow rate controller

F120 - Flow rate controller
with analog control output and high / low alarms

The F120 single loop controller has been designed to offer outstanding control performance and provide a reliable solution for a wide variety of flow control applications. The single loop flow controller accepts most pulse inputs from flowmeters and has a 4 - 20 mA output for controlling a valve or pump. The F120 is part of the Fluidwell process controller family and is the alternative for local control loops.

Features
• Two control modes:
- Hand (manual valve control)
- Auto (control flow to obtain the desired flow rate)
• Bumpless transistion between the control modes.
• Flow rate monitoring: two alarm values can be set: low and high flow rate alarm.
• Alarm values can be changed by the operator or they can be passcode protected.
• Safety mode input to place the valve in a safe position
• Flow rate: seven 17mm (0.67") digits.
• Total - resettable: seven 17mm (0.67") digits.
• Displays clear alarm messages.
• Green LED backlight.
• Auto backup of settings, totalizer value, setpoint and control mode in EEPROM memory.
• Operational temperature: -30°C to +80°C (-22°F to 178°F).
• Very compact design for panel mount, wall mount or field mount applications.
• Rugged aluminum or GRP field mount enclosure IP67 / NEMA4X.

Applications
Applications where a constant liquid or gas flow is desired without the need to manually control the flow.

Flowmeter Inputs
• Pulse type inputs:
Reed-switch, NAMUR, NPN/PNP pulse, Sine wave (coil), active pulse signal.

Status Inputs
• Remote control: external reset for clearing total.
• Remote control: Safety mode which stops the control process and places the valve in a safe position.

Pulse Outputs
• None.

Alarm Outputs
• Function: Two alarm outputs for low and high flow rate alarm.
• Type: Two passive NPN transistors, active PNP transistors or isolated electro-mechanical relays.

Analog Outputs
• Function: Control output to position the valve of the flow.
• Type: One passive isolated, floating or loop powered 4 – 20mA output or one active (0)4 – 20mA or 0 – 10V DC output.

Power Supply
• Battery.
• 4 – 20mA Output loop-powered.
• 8 – 24V AC/DC.
• 115 – 230V AC.

Sensor Supply
• 3.2, 8.2, 12, 24V DC.

Intrinsically Safe
• ATEX: II 1 GD EEx ia IIB/IIC T4 T 100 °C

Explosion Proof
• ATEX: II 2 G EEx d IIB T5

Communication
Function: All process data and settings can be read and modified through the communication link.
Protocol: Modbus RTU.
Interface: RS232 / RS485 2-wire or 4-wire / TTL.