Fluidwell F114 Ratio Monitor / Totalizer

Overview: Precision Ratio Control for Blending and Mixing

The Fluidwell F114 Ratio Monitor / Totalizer is a field-mount flow computer that calculates the actual ratio between two separate flows, displaying flow rate A, total A, flow rate B, total B, and the calculated ratio simultaneously on a single robust field enclosure. Rather than requiring an operator to manually calculate and monitor the relationship between two flow streams, the F114 continuously computes this ratio in real time and triggers configurable alarms if the ratio drifts outside acceptable low or high limits.

As a trusted supplier of Fluidwell field instrumentation, Seven Star LLC sources and supplies the F114 ratio monitor to construction material blending operations, chemical mixing plants, and industrial coating facilities across Oman and the wider GCC. Because ratio calculation formula selection depends on the physical arrangement of the two flowmeters being monitored, Seven Star LLC helps engineering teams configure the correct F114 setup for their specific blending or mixing application.

Measurement Principle

The F114 accepts pulse-type inputs from two independent flowmeters (reed-switch, NAMUR, NPN/PNP pulse, or sine wave/coil signals, with different pulse types permitted for input A and input B), calculating the ratio between the two flow rates using one of six selectable calculation formulas depending on the physical location and arrangement of the flowmeters in the process. The ratio can be displayed as a 1:__ format or as a percentage, matching whichever convention the process operators are accustomed to working with.

Special precautions built into the F114’s logic accommodate start-up conditions and transient incorrect ratio readings for a configurable period, preventing nuisance alarms during normal process start-up when flow rates have not yet stabilized. Up to three configurable alarm outputs (passive NPN transistor, active PNP transistor, or isolated electro-mechanical relay) can be triggered by low ratio, high ratio, or both combined conditions, giving process control systems direct notification when a blend ratio moves outside specification.

Engineering Design of the F114

The F114 is housed in a robust aluminum, GRP, or high-grade stainless steel 316L field enclosure rated IP65/IP67 (Type 4X) – rugged enough, in Fluidwell’s own words, that a truck could stand on it – supporting mounting on walls, pipes, panels, or directly onto outdoor sensors. An LED backlit display shows ratio, flow rate A and B, and total A and B using separate on-screen engineering units, and settings along with running totals are automatically backed up in EEPROM memory to protect against data loss.

Intrinsically Safe certification (ATEX II 1 G Ex ia IIB/IIC T4 Ga for gas, II 1 D Ex ia IIIC T200 100°C Da for dust; equivalent IECEx approvals) and Explosion Proof options (ATEX/IECEx II 2 G Ex db IIB+H2 T5 Gb) extend the F114 to classified hazardous-area installations. Modbus RTU communication via RS232, RS485, or TTL interface allows all process data and settings to be read and modified remotely, and an analog output (4-20 mA or 0-10V DC) can retransmit the actual ratio, flow rate A, or flow rate B scaled to any configured range.

Power supply flexibility is a defining characteristic of the Fluidwell F114 platform: beyond the standard 8-30V DC basic supply, the unit can be ordered for long-life lithium battery operation at unpowered remote sites, loop-powered operation drawing current directly from a 4-20mA signal, or mains-adjacent 8-24V AC/DC and 115-230V AC supplies for panel-mounted installations. A separate sensor excitation output – selectable at 3.2, 8.2, 12 or 24V DC – powers the connected flowmeter transmitters directly from the F114 itself, simplifying wiring on skid-mounted blending packages where running an independent sensor power feed is impractical. Each display digit measures 17mm across seven segments, keeping ratio, flow rate and total readings legible from several metres away on a factory floor or mixing platform.

Key Features

The Fluidwell F114 Ratio Monitor / Totalizer delivers reliable, field-rugged ratio control for two-stream blending. Key characteristics include:

• Calculates ratio between flow A and B using six selectable calculation formulas.
• Displays ratio (as 1:__ or percentage), flow rate A/B, and total A/B simultaneously.
• Configurable low and high ratio alarms with up to three alarm outputs.
• Intrinsically Safe (ATEX, IECEx) and Explosion Proof options for hazardous areas.
• Robust aluminum, GRP, or 316L stainless steel enclosure, IP65/IP67 (Type 4X).
• Modbus RTU communication (RS232/RS485/TTL) for remote data access.
• Ambient temperature range of -40°C to +70°C for harsh field environments.
• Multiple power options – lithium battery, loop-powered, 8-24V AC/DC, 115-230V AC or 8-30V DC – suit both unpowered remote sites and panel-mounted installations.

Industrial Applications

The F114 is deployed wherever mixing or blending of two components requires continuous ratio displaying, monitoring, and totalizing, including construction material blending, roof and wall insulation spraying, gluing and coating applications, and general two-stream chemical dosing processes. Its rugged field enclosure and wide operating temperature range make it well suited to outdoor and harsh weather installations across desert, coastal, and industrial plant environments.

Seven Star LLC supports construction, chemical, and industrial coating operations across Oman, Muscat, Sohar, and the broader GCC region with sourcing of Fluidwell F114 ratio monitors, helping projects maintain consistent, monitored blend ratios in their mixing processes.

Technical Specifications

The table below summarizes the core specifications of the Fluidwell F114 Ratio Monitor / Totalizer as supplied by Seven Star LLC.

Request a Quote for Fluidwell F114 Ratio Monitor / Totalizer

Seven Star LLC supplies the Fluidwell F114 ratio monitor / totalizer with datasheet documentation and regional technical support. Contact our instrumentation division for a formal B2B quotation, to confirm the correct calculation formula and enclosure for your blending application, or to obtain the complete technical datasheet.Seven Star LLC supplies this item on request with the manufacturer documentation, and availability and lead time are confirmed at quotation.

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