DEPOSENS® Tank Sensor
Purpose-built for continuous deposit monitoring on tank walls, vessel floors, and storage containers. Weld-on or flange-mount installation. Real-time detection of biofilm, scale, and fouling layers.
Why choose the Tank Sensor
Engineered specifically for tank and vessel environments where access is limited and process interruption is not an option.
Tank wall & floor monitoring
Detects deposit build-up directly on tank interior surfaces — walls, floors, and curved vessel profiles — where conventional measurement is impossible.
IP68 — fully submersible
Rated for full submersion — suitable for tanks with fluctuating fill levels, aggressive media, and high-pressure CIP wash cycles.
Multi-point configurations
Deploy multiple sensors at different heights and positions within a single tank to build a complete deposit profile across the vessel surface.
CIP validation ready
Timestamped deposit data before and after each cleaning cycle provides documented, auditable proof that surfaces are returned to baseline cleanliness.
Wide chemical compatibility
Stainless steel 316Ti wetted parts withstand pH 2 to 12, high chloride concentrations, and aggressive cleaning agents used in food and pharma CIP.
Seamless SCADA integration
Standard 4–20 mA analogue output and optional RS485 / Modbus RTU connect directly to any DCS, PLC, or building management system.
How the Tank Sensor works
The same proven thermal transmission method as the Pipe Sensor — adapted for tank and vessel geometry.
Sensor mounted on tank wall
Welded or flange-mounted directly onto the exterior tank wall at the measurement point — no media contact, no process interruption.
Thermal pulse transmitted
A controlled thermal signal is injected through the tank wall. Any deposit layer on the interior surface acts as thermal insulation, reducing heat transmission.
Deposit thickness calculated
The controller processes the thermal response and calculates calibrated deposit thickness in real time, with 0.01 mm resolution.
Alarm & data output
Deposit data is transmitted via 4–20 mA or RS485. Configurable relay alarms trigger when thickness exceeds defined thresholds.
Flexible mounting options
Three proven installation methods to suit any tank geometry, wall thickness, or access constraint.
Weld-on stub
A stainless steel stub welded directly onto the tank exterior wall. Permanent, leak-proof, and suitable for high-pressure applications up to 16 bar.
Flange mount
DIN or ANSI flange connection for tanks with existing nozzle connections. Allows sensor removal for maintenance without cutting or welding.
Clamp-on (retrofitting)
Non-intrusive external clamp for existing tanks where welding is not possible. Ideal for retrofitting glass-lined, coated, or pressurised vessels.
Full specifications
Complete technical parameters for the DEPOSENS® Tank Sensor.
Measurement
| Measurement principle | Thermal transmission (heat flux method) |
|---|---|
| Measurement range | 0 – 5 mm deposit thickness |
| Resolution | 0.01 mm |
| Accuracy | ± 0.05 mm (calibrated) |
| Deposit types | Biofilm, limescale, silica, rust, organic fouling, mixed deposits |
Process Conditions
| Temperature range | −20°C to +120°C |
|---|---|
| Media pH range | 2 – 12 |
| Max. operating pressure | 16 bar |
| CIP compatibility | Yes — suitable for standard CIP/SIP cycles |
Electrical
| Output signal | 4 – 20 mA (proportional to deposit thickness) |
|---|---|
| Digital output | RS485 (Modbus RTU) |
| Supply voltage | 24V DC (via DEPOSENS® controller) |
Mechanical
| Housing material | Stainless steel 1.4571 (316Ti) |
|---|---|
| Installation types | Weld-on stub · Flange mount · Clamp-on |
| Multi-point support | Yes — up to 8 sensors per controller |
| Protection class | IP68 (fully submersible) |
Certifications
| CE marking | Yes — EU Declaration of Conformity |
|---|---|
| RoHS compliant | Yes |
Where it's used
The Tank Sensor is deployed across a wide range of storage, process, and treatment vessel applications.
Food & Beverage
Biofilm and CIP validation in storage tanks, fermentation vessels, and buffer tanks.
Pharmaceutical
Hygienic monitoring of API storage, WFI tanks, and process vessels under GMP.
Water Treatment
Fouling monitoring in clarifiers, sedimentation tanks, and membrane feed vessels.
Chemical Storage
Deposit control in reaction vessels, storage tanks, and neutralisation basins.
Biogas & Wastewater
Struvite, fat, and fibre deposit monitoring in digesters and holding tanks.
Industrial Cooling
Scale monitoring in cooling water buffer tanks and quench vessels.
Oil & Gas
Wax, paraffin, and scale deposit detection in production separators and storage.
Agriculture & Biofuels
Deposit monitoring in fermentation tanks, digesters, and nutrient solution vessels.
Product documents
Download technical documentation, installation guides, and certifications for the Tank Sensor.
DEPOSENS® Tank Sensor — Datasheet
Full specifications, dimensions, media compatibility · PDF · 380 KB
Installation & Commissioning Manual
Weld-on, flange, and clamp-on installation guide · PDF · 1.4 MB
CE Declaration of Conformity
EU compliance certificate · PDF · 180 KB
Multi-Point Wiring Guide
Multi-sensor configurations, Modbus register map · PDF · 720 KB
Tank Sensor FAQ
How does the Tank Sensor measure deposits?
Can it be fitted to existing tanks?
Is it suitable for CIP cleaning validation?
How many sensors can one controller manage?
What media and materials is it compatible with?
Ready to monitor your tank?
Our application engineers will confirm sensor compatibility with your vessel geometry, media, and process conditions.