Ultrasonic Sludge & Mud Level Meter (Submerged) SUL812
Ultrasonic Sludge & Mud Level Meter (Submerged) SUL812

Ultrasonic Sludge & Mud Level Meter (Submerged) | SUL812

Submerged Ultrasonic Sludge Blanket & Mud Level Meter for Wastewater & Settling Tanks

Continuous, non-contact measurement of settled sludge depth and sediment boundaries inside liquid tanks. The SUL812 submerges directly into wastewater to monitor the interface between clarified water and settled solids in real time, preventing sludge carryover and optimizing pumping cycles.

  • Measurement Ranges: 5 m, 10 m, 15 m, or 20 m underwater depth options.

  • Outputs: 4–20 mA, RS485 Modbus-RTU, and High/Low Limit Alarm Relays (simultaneous output).

  • Installation: Submerged stainless steel sensor probe with wall-mounted digital display unit.

  • Applications: Wastewater treatment plants, sedimentation/clarifier tanks, power plant slurry tanks, and mining wash plants.

Add to Quote
Category:

Description

Real-Time Sludge Blanket Monitoring for Process Optimization

In wastewater treatment, primary/secondary clarifiers, and industrial settling basins, knowing the exact depth of settled sludge is critical. Pumping too early wastes energy on thin sludge, while waiting too long causes solids carryover into clean effluent. The SUL812 Ultrasonic Sludge Level Meter uses high-frequency submerged acoustic pulses (100kHz–200kHz) to continuously pinpoint the mud/water interface layer.

Dual-Unit Design: Rugged Submerged Probe + Feature-Rich Host

The SUL812 features a heavy-duty stainless steel submerged transducer attached to a 10-meter cable with handle ear for hanging. The separate wall-mounted controller features a multi-information LCD display with LED backlighting, making field calibration and reading straightforward.

Key Application Environments:

  • Wastewater Treatment: Primary & secondary sedimentation tanks, sludge concentration tanks.

  • Water Supply Plants: Clarifier and raw water sedimentation basins.

  • Power & Mining: Coal preparation plants, slurry settling ponds, and industrial ash tanks.

 

Features

  • Continuous Submerged Interface Detection: Directly measures sludge thickness underwater rather than estimated top-down distances.

  • Simultaneous Multi-Output Interface: Outputs 4–20 mA analog, RS485 Modbus-RTU, and upper/lower limit relay alarms at the same time for direct PLC/pump control.

  • High Acoustic Penetration: Transducer frequency tuned (100kHz–200kHz) with a narrow 10 degree beam angle to prevent side-wall reflection errors.

  • Integrated Field Display: Wall-mounted unit features a multi-data LCD showing current height, network address, communication baud rate, and fault diagnostics.

  • Strain-Relief Cable Mount: Stainless steel sensor head includes a handle ear and water-pipe thread connector to prevent cable tension damage.

 

Specification

Parameter Specification Details
Detection Range

5 m, 10 m, 15 m, 20 m (Selectable)
Detection Accuracy

+/- 1% (Standard plane in 20 degree C water)
Blind Area

Less than or equal to 800 mm
Recommended Submersion Draft

At least 500 mm below liquid surface
Beam Angle

10 degrees (+/- 2 degrees)
Acoustic Frequency

100 kHz – 200 kHz
Signal Outputs

4–20 mA + RS485 Modbus-RTU + Relay Alarm (Simultaneous)
Power Supply Options

AC 220V (50Hz) or DC 24V / 300 mA
Operating Temperature

-10 degree C to +50 degree C (Storage: -20 degree C to +70 degree C)
Sensor Cable Length

10 meters default

 

FAQ

Q: How is the SUL812 sensor probe installed in the tank?

A: The sensor probe is submerged directly into the tank liquid to a depth of at least 0.5 meters below the water surface to avoid surface foam and agitation. The probe must be mounted at least 0.5 meters away from side walls.

Q: What is the difference between a standard liquid level meter and a sludge level meter?

A: A standard liquid level meter measures the top surface of liquid from above in air[cite: 1, 2]. The SUL812 sludge level meter is submerged underwater and looks downward through the water to measure where the water stops and the settled mud/sludge layer begins.

Q: Can the alarm relays directly trigger a de-sludging pump?

A: Yes. The SUL812 includes upper and lower limit relay alarm outputs that can be wired directly to control de-sludging pumps, motorized valves, or input into a VFD/PLC control loop.

Downloads

Ultrasonic Sludge & Mud Level Meter (Submerged) | SUL812 – Datasheet

 

Related products

MENU