
Robust, reliable liquid level sensors
- Reliable, continuous liquid level measurement
- Robust construction suitable for aggressive liquids & hostile environments
- Stable measurement in moving liquids

Robust, reliable liquid level sensors
- Reliable, continuous liquid level measurement
- Robust construction suitable for aggressive liquids & hostile environments
- Stable measurement in moving liquids

LevelPro liquid level sensors are used in applications ranging from measuring fuels, oils or coolants in marine vessels and off-highway machinery through to measuring the level of aggressive chemicals within manufacturing processes. Using capacitive sensing technology, LevelPro level sensors provide highly accurate and reliable contact based measurement in a wide range of liquids. LevelPro is selected where long-term reliability and lowest lifetime cost of ownership is important.
Key Features
- Accurate and reliable, continuous liquid level measurement
- High quality construction: stainless steel with sealed electronics
- Durable in aggressive liquids & environments (marine grade corrosion resistance)
- Stable liquid level measurement in highly mobile vehicles
- Wide operating temperature range (-40°C to +125°C)
- Wide tank shape and tank material compatibility with tank profiling system for irregular tank shapes
Typical Applications
- Marine vessels including hovercraft and submarines
- Rail locomotive oil and coolant
- Off-highway machinery including high temperature & vibration environments
- Industrial and process chemicals
- Oil, fuel and coolant tanks across a range of industries
- Foaming liquids requiring accurate level measurement
LevelPro technical information

LevelPro - robust, reliable level sensors
- 316 stainless streel construction
- Accuracy +/- 2% FSD @20°C
- Probe lengths available between 100mm & 2000mm
- Mounting: SAE 5-bolt, 1.125" UNF, 1.25" BSP or 2" NPT thread options
- Suitable for top of tank or inverted installation
LevelPro, robust, reliable liquid level sensors for measuring aggressive liquids and liquids in applications exposed to harsh environments - more details
Designed & Manufactured by Gill Sensors & Controls in the UK, LevelPro liquid level sensors provide accurate and reliable level measurement in aggressive liquids or liquids operating in harsh environments. LevelPro level sensors use solid-state capacitive technology to sense the level of the liquid. With no moving parts, floats or other mechanical linkages, LevelPro provides excellent long term reliability, accuracy and durability resulting in lowest lifetime cost of ownership.
In addition to liquid level measurement, LevelPro sensors also provide a selectable high/low alarm.
Every sensor is factory calibrated with temperature compensation to provide market leading accuracy in liquid level measurement as well as quick and easy setup.
A tank profiling feature allows LevelPro level sensors to provide accurate tank volume output results even in irregular tank shapes.
Mounting options – a range of standard mounting options is available.
Two output options are available (analogue voltage or current) and LevelPro is compatible with industry standard gauges, PLCs, RTUs and IoT data collection systems. Output voltage 0.25-4.75V (max range 10V). Output current 4-20mA.
Environmental protection IP66, IP68.
LevelPro level sensors have no moving parts and as a result are extremely reliable and accurate, requiring minimum maintenance.
Liquid Level Sensor Accessories
Gill liquid level sensors are supported by standard accessories to assist with specific installation requirements.

USB to RS232 adaptor
The USB to RS232 cable adaptor allows connection of a Gill LevelPro LevelLite or CatchTank liquid level sensor to a computer where the sensor can be quickly configured using GSlevel software. (only the FTDI USB-RS232-WE-1800-BT_5.0 is fully supported – other converters may not be compatible).

Liquid Level Display
Gill Liquid Level Display can be programmed to ‘map’ the tank shape to display true volume rather than simply liquid height.
Provides a real-time quick visual reference and an accurate numerical reading (using 29 bright LEDs and a seven segment panel) with light-sensitive auto-dimming for night use.
Fully programmable with a low level alarm.
Compact and lightweight for easy installation on dashboards and instrument panels (shallow 6mm depth aluminium bezel).
GSlevel Software

Overview
GSlevel software is designed for easy level sensor customisation and is free to download. The software allows control over output settings, minimum and maximum levels and alarm switch levels for ultimate adjustability.
GSlevel also allows the user to achieve a volumetric output using its tank profiling feature. Users can reconfigure the sensor using the simple configuration wizard or by uploading a CSV file to profile a cross-section of the data to gain a volumetric output.
Compatible products: LevelPro, LevelLite, LevelSlick and CatchTank level sensor.
Compatible operating systems: Windows® 7 or later
Additional applications to support Gill products
Gill has a number of applications to support older products and older operating systems. For more information please contact support@gillsc.com specifying
- Product name
- Part number
- Product serial number
- PC operating system