F114 - Ratio monitor / totalizer

F114 - Ratio monitor / totalizer
with high / low alarms and analog outputs

The F114 flow computer calculates the actual ratio between two separate flows. It offers the ability to set one low ratio and one high ratio alarm value. Special precautions are taken to allow start-up problems and incorrect ratio readings for a certain period of time. Based on the location of the flowmeters, a selection can be made out of six different formulas.
The display shows the ratio, alarm values, flow rate A, total A and flow rate B, total B. On-screen engineering units are easily configured from a comprehensive selection. The ratio can be displayed as 1:__ or as a percentage.
A wide range of options further enhance this models capabilities, including Intrinsic Safety for hazardous area applications and full Modbus communication.

Features
• Calculates ratio between flow A and B.
• Displays ratio, flow rate A and B and total A and B.
• Ratio monitoring: two alarm values can be set: low and high ratio alarm.
• Alarm values can be changed by the operator or they can be passcode protected.
• Six ratio calculation formulas.
• Ratio: seven 17mm (0.67") digits, displayed as 1:__ or percentage.
• Flow rate A and B: seven 17mm (0.67") digits.
• Total A and B - resettable: seven 17mm (0.67") digits.
• Separate engineering units for flow rate and total on the display.
• Up to three configurable alarm outputs.
• Displays clear alarm messages.
• Green LED backlight.
• Auto backup of settings and running totals in EEPROM memory.
• Operational temperature: -40°C to +80°C (-40°F to 176°F).
• Very compact design for panel mount, wall mount or field mount applications.
• Rugged aluminum or GRP field mount enclosure IP67 / NEMA4X.

Applications
Mixing or blending of two components where continuous ratio displaying, monitoring and totalising is important. For example in construction works, roof or wall isolation, gluing and coating.

Flowmeter Inputs
• Pulse type inputs:
Reed-switch, NAMUR, NPN/PNP pulse, Sine wave (coil), active pulse signal.
Different pulse signal types are allowed for input A and B.
• (0)4 – 20mA.
• 0 – 10V DC.

Pulse Outputs
• None.

Alarm Outputs
• Function: Configurable alarm outputs for low, high or both combined combined ratio alarms.
• Type: Up to three passive NPN transistors, active PNP transistors or isolated electro-mechanical relays.

Analog Outputs
• Function: Re-transmitting the actual ratio, flow rate A or flow rate B - the output can be scaled to any range (e.g. 1:5 to 1:100 or 200 L/min to 1200 L/min).
• 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 Loop-powered.
• 8 – 24V AC/DC.
• 115 – 230V AC.

Sensor Supply
• 3.2, 8.2, 12, 24V DC.

Intrinsically Safe
• ATEX:
II 1 G Ex ia IIB/IIC T4 Ga
II 1 D Ex ia IIIC T100 °C Da IP6X
• IECEx:
Ex ia IIC/IIB T4 Ga
Ex ia IIIC T100 °C Da IP6X

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.