Level controller with relay output F173

panel-mountwith LCD displayreal-time monitoring

Product overview
The F173 is a versatile field-mount level monitor and controller providing continuous level measurement, a dedicated bargraph and dual-line display for simultaneous level/height and content indication. It supports up to four outputs to control valves or trigger visual/acoustic alarms and offers four configurable alarm levels for reliable level control.

General
The F173 is a next-generation device in the F-Series of level indicators, monitors and controllers, delivering improved performance, extended functionality and enhanced reliability compared with earlier F1-series models. It is designed for demanding industrial field applications.

Advantages

• Continuous level monitoring with integrated control and retransmission options.
• Rugged aluminium or stainless steel 316L field enclosure rated IP65/IP67 (Type 4X), suitable for outdoor and harsh environments.
• Intuitive Fluidwell configuration structure for fast commissioning and reduced engineering time.
• Flexible mounting: wall, pipe, panel or direct on outdoor sensors.
• Clear dual-line display with dedicated bargraph showing level/height, content, percent full or alarm values.

Features

• Level monitoring and control with four alarm thresholds: lo-lo, lo, hi, hi-hi, each with configurable hysteresis and ignore function.
• Bargraph visualization according to level/height or content and red flashing LED backlight on alarm.
• Custom units for level/height and content and 48-point linearization (strapping table) for tank-shape compensation.
• Single level input: (0)4–20 mA (HART transparent) with Namur NE43 sensor-fault detection and on-screen visualization.
• Up to 4 outputs: passive transistor or heavy-duty mechanical relays; one analog isolated 4–20 mA output (active, isolated or loop-powered options).
• Three configurable remote control inputs; full Modbus ASCII/RTU communication via RS232/RS485 (isolated RS485 optional).
• Plug-and-play USB-C port for remote configuration and easy PC/laptop programming with free software.
• Power supply options: 10–27V DC (basic), isolated 12–30V DC / 12–24V AC, or isolated 115–230V AC; auto backup of settings.

Applications

• Continuous level measurement with volume calculation via strapping table for irregular tanks and signal retransmission to control systems.
• Field-mounted level indicator/controller for safe and hazardous areas, rated for extreme climates (rain, snow, sand, saline atmospheres) and temperatures from -40°C to +70°C (-40°F to 158°F).

Technical specifications

• Model: F173
• Display: Dual-line display with dedicated bargraph; red flashing LED backlight for alarm
• Level input: (0)4–20 mA (HART transparent)
• Status inputs: 3 configurable remote control inputs (6 functions)
• Alarm outputs: Configurable lo-lo, lo, hi, hi-hi; up to 4 heavy-duty mechanical relays; optional clear alarm output
• Analog outputs: One passive isolated 4–20 mA; one active (0)4–20 mA or isolated loop-powered; scalable to any range
• Communication: Modbus ASCII/RTU; RS232 / RS485 2-wire / isolated RS485 2-wire
• Configuration: USB-C (remote configuration)
• Linearization: 48-point strapping table for tank-shape compensation
• Sensor fault detection: Namur NE43 with visualization and configurable retransmission
• Power supply: 10–27V DC (basic), isolated 12–30V DC / 12–24V AC, isolated 115–230V AC
• Sensor supply: 24V DC
• Enclosure: Aluminium or stainless steel 316L field enclosure; IP65, IP67 / Type4X
• Operating temperature: -40°C to +70°C (-40°F to 158°F)
• Mounting: Wall, pipe, panel or directly onto outdoor sensors
• Memory: Auto backup of all settings