F077 Safe area / Intrinsically safe – Level Monitor
The F077 is a versatile level indicator with linearization and continuous level monitoring feature. In addition to the average Span, eight linearization points can be entered to compensate for the tank shape. The unit will interpolate between these points to increase the accuracy. With the level monitoring feature, one low level and one high level alarm value can be set.
Measure. Monitor. Repeat.
For better insights, better decision-making and better process performance.
Key Features & Benefits
- The display shows the actual level, height or percentage, alarm values, alarm messages and status.
- On-screen engineering units are easily configured from a comprehensive selection.
- Displays clear alarm messages.
- Red flashing LED backlight in case of a level alarm; intensity adjustable.
- Selectable on-screen engineering units for level: ml, L, m³, GAL, USGAL, kg, lb, bbl or no unit.
- Selectable on-screen engineering units for height: mm, cm, m, mtr, inch, ft, mmwk, mmwc, cmwk, cmwc, mwk, mwc, inwc, ftwc, mBar, Bar, PSI or no unit.
- Level: six large 17mm (0.67″) digits.
- Eight point linearization of the tank-shape – with interpolation.
- Level monitoring: two alarm values can be set: low and high level alarm.
- Alarm values can be changed by the operator or they can be password protected.
- One alarm output for high, low or both combined level alarms.
- Intrinsically safe according ATEX, IECEx and CSA C-US.
- GRP, Aluminum or high grade stainless steel enclosure.
- Auto backup of settings in EEPROM memory.
- Easy configuration with clear alphanumerical display.
- Ambient temperature: -40°C to +70°C (-40°F to 158°F).
- Various accessories are available for this product.
Typical Applications
- Level measurement where continuous level monitoring and linearization of the tank shape is important without signal re-transmission.
- 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, IECEx and CSA 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.
| Signal Inputs | |
|---|---|
| Level Inputs | (0)4 – 20mA |
| Signal Outputs | |
| Alarm Outputs | Function: Configurable alarm output for high, low or combined level alarms Type: One passive NPN transistor, active PNP transistor, or isolated electro-mechanical relay |
| Analog Outputs | None |
| Supply | |
| Power Supply | Long life Lithium battery 4 – 20mA input loop-powered 8 – 24V AC/DC 115 – 230V AC Basic: 8 – 30V DC |
| Sensor Supply | 8.2, 12, 24V DC |
| Hazardous Area | |
| Intrinsically Safe | ATEX Gas: II 1 G Ex ia IIC T4 Ga Dust: II 1 D Ex ia IIIC T200 100 °C Da IECEx CSA |
| Explosion Proof | ATEX/IECEx Gas: II 2 G Ex db IIB+H2 T5 Gb Dust: II 2 D Ex tb IIIC T80°C Db |
| Communication | |
| Protocols | Modbus communication available on F1-Series products HART communication available with the F018 Flow rate Monitor / Totalizer |
Why Choose Process Networks?

ISO-Certified Quality
Our ISO 9001:2015 quality management system ensures full traceability across design, installation, calibration and support.

Technical Expertise You Can Reach
When you contact us, you speak directly to an expert — not a call centre.

Trusted Supplier Partnerships
Exclusive access to premium instrumentation from leading global manufacturers in Germany, Japan, the US and across Europe.

Long-Term Support & SLAs
Most customers stay with us for years because we stay with them providing ongoing maintenance, calibration and on-site service.

Proven Field Experience
Thousands of instruments installed and tens of thousands points monitored daily on systems we support.









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Process Networks Ltd,
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