External Ultrasonic Tank Level Meter (Non Intrusive) SUL814
External Ultrasonic Tank Level Meter (Non Intrusive) SUL814

External Ultrasonic Tank Level Meter (Non-Intrusive) | SUL814

External Clamp-On / Magnet-Mounted Ultrasonic Level Meter for Sealed & Hazardous Tanks

Measure liquid levels from the outside bottom of steel, alloy, or composite tanks without drilling holes or stopping production. The SUL814 uses sonar technology through the tank wall, making it ideal for high-pressure, toxic, or explosive media where tank penetration is impossible or unsafe.

  • Installation: Non-intrusive magnetic / adhesive mount at tank base (Zero downtime).

  • Range Options: 1 m up to 50 m (Horizontal, Vertical, & Spherical tanks).

  • Safety & Approvals: ExdIICT6 Explosion-Proof | IP65 Host / IP68 Sensor.

  • Media Temp: -196°C to +200°C (Normal & High-Temp Probes).

  • Outputs: 4–20 mA, HART, RS485 Modbus RTU, Relay Alarm Outputs.

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Description

Non-Intrusive Sonar Technology: No Drilling, No Leaks, No Shutdowns

Installing traditional level probes in pressurized vessels, fuel tanks, or toxic chemical reservoirs requires costly tank downtime, specialized hot-work permits, and potential leak hazards. The SUL814 External Ultrasonic Level Meter solves this by transmitting high-frequency sonar waves through the bottom tank wall directly into the liquid medium. The signal reflects off the liquid surface back to the sensor, automatically calculating height without touching the liquid.

Engineered for Extreme & Hazardous Conditions

Equipped with an ExdIICT6 explosion-proof heavy-duty host and an IP68 submersible probe, the SUL814 is built for harsh industrial sites. With available probe configurations handling cryogenics or high temperatures (-196°C to +200°C), it reliable operates on liquefied gas, hydrocarbons, purified water, and clean solvents.

Key Application Environments:

  • Liquefied Gas & Fuel Storage: LPG tanks, diesel/gasoline reservoirs, and pressurized horizontal vessels.

  • Chemical & Pharmaceutical: High-purity solvents, acids, and toxic reagents in sealed metal or fiberglass tanks.

  • Retrofit & Temporary Monitoring: Quick magnetic attachment for tanks where structural modification is strictly prohibited.

 

Features

  • Zero-Downtime External Installation: Attaches to the tank exterior via magnetic base or acoustic gel/adhesive. No holes, no welding, no system shutdown.

  • Virtually Zero Blind Zone: Advanced signal processing eliminates or reduces the blind zone down to twice the tank wall thickness.

  • Wide Wall Compatibility: Measures accurately through carbon steel, stainless steel (304/316), FRP, glass fiber, and hard rubber walls up to 100 mm thick.

  • Hazardous Area Certified: ExdIICT6 explosion-proof housing with IP68 rated sensing probe.

  • Multi-Protocol Communications: 4–20 mA loop, HART, RS485 Modbus-RTU, and programmable relay outputs for direct PLC/SCADA integration.

 

Specification

Parameter Specification Details
Measurement Range 1 m, 3 m, 5 m, 10 m, 20 m, 30 m, 50 m (Selectable)
Measurement Method Non-intrusive external sonar echo reflection
Repeatability & Error Repeatability: 1 mm; Accuracy: ±0.1% to ±0.2% F.S.
Blind Zone Near zero (approx. 2x tank wall thickness)
Tank Wall Thickness 1 mm to 100 mm (Hard materials: Steel, FRP, Glass)
Probe Temperature Range Standard: -196°C to +120°C | High-Temp: +60°C to +200°C
Power Supply 24 VDC or 220 VAC (< 1 W power consumption)
Signal Outputs 4–20 mA, HART, RS485 Modbus, Relay Alarm (AC 250V 5A / DC 30V 5A)
Protection Rating Host Unit: IP65 | External Probe: IP68
Explosion-Proof Rating ExdIICT6

 

FAQ

Q: Will the SUL814 work on tanks with internal linings or rubber coatings?

A: No. The measuring point on the bottom tank wall must be solid metal or hard composite without air interlayers, inner linings (e.g., rubber, PTFE lining, enamel), or heavy internal baffle structures directly above the sensor.

Q: What liquid types are suitable for this external meter?

A: The liquid must be clean with low dynamic viscosity (less than 30 mPa·s). It should not contain heavy sediment, dense air bubbles (greater than 0.1%), high suspended solids, or severe crystallization. Standard water, oils, solvents, LPG, and fuels are ideal.

Q: How is the probe mounted to the bottom of the tank?

A: For magnetic metal tanks, the probe uses a high-strength magnetic mount paired with acoustic coupling gel. For non-ferromagnetic tanks (like FRP or stainless steel), an adhesive/epoxy mounting fixture is used.

Downloads

External Ultrasonic Tank Level Meter (Non-Intrusive) | SUL814 – Datasheet

 

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