F116 Safe area / Intrinsically safe – Differential / Sum Flow Computer
The F116 flow computer has been developed to calculate differential / consumption or total volume. The usual difficulties encountered in such applications include: pulsating flows, very low consumption readings, vibration and high ambient temperatures.
Measure. Monitor. Repeat.
For better insights, better decision-making and better process performance.
Key Features & Benefits
- Calculates differential flow rate (consumption), total and accumulated total of flow A and B.
- Calculates the sum flow rate, total and accumulated total of flow A and B.
- Precautions for pulsating flows and very low consumption readings.
- Analog and pulse outputs.
- The display shows flow rate, differential or summerized total and accumulated total.
- Large digit selection for flow rate or total.
- Flow rate: seven 17mm (0.67″) or 8mm (0.31″) digits.
- Total – resettable: seven 17mm (0.67″) digits.
- Accumulated total – not resettable: eleven 8mm (0.31″) digits.
- Separate engineering units for flow rate and total on the display.
- LED backlight.
- Intrinsically safe according ATEX and IECEx.
- GRP, Aluminum or high grade stainless steel enclosure.
- Auto backup of settings and running totals in EEPROM memory.
- Ambient temperature: -40°C to +70°C (-40°F to 158°F).
Typical Applications
- Differential function: fuel consumption calculation for diesel engines on board of ships or locomotives.
- Sum function: where flows are split-up in two pipe-lines and total flow has to be calculated.
- The F-Series is your first and best choice for field mount indicators in safe and hazardous area applications. Especially in harsh weather conditions like rain, snow, sandy deserts, salty atmospheres and temperatures between -40°C up to +70°C (-40°F up to 158°F).
Advantages
- Robust aluminum or stainless steel 316L field enclosure (IP65, IP67 / NEMA Type4X) .
It is so rugged, a truck can even stand on it! - Intrinsically Safe available - ATEX and IECEx approval for gas and dust applications.
- Familiar easy operation with the Fluidwell "Know one, know them all" configuration structure, saving time, cost and aggravation.
- Very diverse mounting possibilities: walls, pipes, panels or directly onto outdoor sensors.
| Category | Function / Description | Type / Details |
|---|---|---|
| Signal Inputs | 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. |
| Pulse Outputs |
Scaled pulse output according to differential or sum accumulated total (e.g., a pulse every 3.25 gallons). Max. frequency: 500Hz. Adjustable pulse length: 0.001 sec to 9.999 sec. Directional output switches when pulse output reflects a “negative” differential. Two passive NPN transistors, active PNP transistors, or isolated electro-mechanical relays. | |
| Alarm Outputs | None | |
| Analog Outputs |
Re-transmitting differential or totalized flow rate, scalable to any range (e.g., 200 L/min to 1200 L/min). One passive isolated, floating or loop powered 4–20mA output, or one active (0)4–20mA / 0–10V DC output. | |
| Communication |
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. HART communication available with F018 Flow rate Monitor / Totalizer. | |
| Supply | Power Supply |
Long life Lithium battery. 4–20mA output loop-powered. 8–24V AC/DC. 115–230V AC. Basic: 8–30V DC. |
| Sensor Supply | 3.2V, 8.2V, 12V, 24V DC | |
| Hazardous Area – Intrinsically Safe |
ATEX: Gas: II 1 G Ex ia IIB/IIC T4 Ga Dust: II 1 D Ex ia IIIC T200 100 °C Da IECEx: Gas: Ex ia IIC/IIB T4 Ga Dust: Ex ia IIIC T200 100 °C Da | |
| Explosion Proof |
ATEX/IECEx: Gas: II 2 G Ex db IIB+H2 T5 Gb Dust: II 2 D Ex tb IIIC T80°C Db |
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Thousands of instruments installed and tens of thousands points monitored daily on systems we support.









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