
Level sensors for challenging liquids
- Reliable in viscous fluids and liquids containing suspended material
- Non-stick PTFE coating minimizes maintenance
- No hole or moving parts to clog or block

Level sensors for challenging liquids
- Reliable in viscous fluids and liquids containing suspended material
- Non-stick PTFE coating minimizes maintenance
- No holes or moving parts to clog or block

LevelSlick specialist level sensors measure challenging liquids in a range of applications where reliable low maintenance operation is important. LevelSlick’s PTFE coating makes it suitable for measuring difficult liquids including high viscosity water based varnishes, liquids containing solids and effluents as well as slurries and foaming liquids. LevelSlick is commonly used in water treatment and waste tanks as well as industrial storage and processing.
Key Features
- Reliable continuous level measurement in conductive (water based) slurries, syrups, suspensions, varnishes etc.
- Non-stick, hydrophobic PTFE sensor coating minimizes build up on the sensor
- Factory calibrated for easy setup - ready to use 'out of the box'
- Highly durable sealed electronics
- Low installation and lifetime costs
- Suitable for all tank types and shapes
- Withstands strong agitation & foaming
Typical Applications
- Waste water treatment including effluent and sewage
- Marine waste (black) water tanks
- Industrial processes
- Corrosive or highly viscous liquid storage
- High viscosity water based varnishes
- Pulp and paper processing
LevelSlick technical information

LevelSlick level sensors for challenging liquids
- PTFE coating with sealed electronics
- Resolution: 12 bit (4096 points over measurement range) ensuring accurate measurement even in challenging liquids containing particles or suspended matter (+/- 10% FSD @20°C)
- Probe lengths: standard 250, 350, 450, 600, 800, 1000, 2000mm (custom lengths available)
- Mounting: 1.25" BSP threaded
LevelSlick, reliable, non-stick level sensors for challenging liquids - more details
Designed & Manufactured by Gill Sensors & Controls in the UK, LevelSlick liquid level sensors provide reliability whatever the media. Conductive technology and a PTFE coating allow LevelSlick to combine a non-stick sensor with a design containing no holes or moving parts to block or stick. This ensures reliability and low maintenance requirements in materials normally difficult to measure. LevelSlick is compatible with suspended solids, flocculants, slurries, colloids, effluents and acidic fluids. The sensors are unaffected by films or build up that can occur on tank walls which can be problematic for capacitance based devices.
LevelSlick is often deployed where build up of residues or suspended solids from the liquid can result in unreliable or inaccurate measurements. LevelSlick remains accurate in these circumstances, preventing accidental overflow or tank draining when difficult or dangerous materials are being managed. The sensor probe has been engineered so it does not require additional mechanical support in the tank, whilst being robust enough to withstand any strong agitation that may be present. The single smooth probe facilitates the serviceability of the sensor should any cleaning be required, simply wipe down with alcohol wipes.
A tank profiling feature allows LevelSlick to provide accurate tank volume output results even in irregular tank shapes, essential for process inventory management.
Three output options are available for LevelSlick: Voltage maximum 0.25-10.0V DC (configurable), current 4-20mA, resistive 10-180 or 240-33 ohms.
Environmental protection to IP66/IP68/IP69k to EN60529
LevelSlick liquid level sensors have no moving parts and as a result are extremely reliable and accurate.
Liquid Level Sensor Accessories
Gill LevelSlick liquid level sensors are supported by standard accessories to assist with specific installation requirements.

USB lead - Type A to Micro B adaptor
A USB lead (Type A to Micro B) allows connection of a LevelSlick liquid level sensor to a computer where the sensor can be setup and configured using GSlevel software.
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
Videos
View our short videos to see how LevelSlick works.
Why LevelSlick is reliable in some of the toughest liquids, including slurries with suspended solids.
(1 mins)
Reliable level measurement with minimal cleaning/servicing.
(1.5 mins)
Reliable and accurate, fit-and-forget solution – LevelSlick explained.
(1.5 mins)