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Ultrasonic Sludge-water Interface Meter

Model：

HD-NSJM

Introduction：

Ultrasonic Sludge-water Interface Meter measures sludge layer height and water level by ultrasonic echo analysis. Widely used for wastewater treatment plants, sedimentation tanks and sludge settling monitoring....

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  • Image and Text Display
  • Technical Specifications
  • Product video

I. Product Overview

Also known as an ultrasonic sludge level meter, the ultrasonic sludge-water interface meter is a professional contact-type instrument for measuring the thickness of underwater sludge. It is highly reliable and easy to install and maintain: the sensor only needs to be immersed 3–10 cm in water to work. By analysing the ultrasonic emission and the echo from suspended solids in the water, it accurately measures the height of the sludge layer and the water level, and effectively reveals the sludge settling characteristics. The probe is fully sealed and physically protected, is corrosion-resistant and durable, and offers very stable performance. A built-in temperature compensation device, a temperature prompt and a sound-velocity correction mode make the measurement more accurate and reliable.

II. Key Features

1. LCD screen with a Chinese interface, making operation simple and convenient.

2. Imported TI chip and anti-interference circuit for higher precision and greater stability.

3. Photoelectrically isolated 4–20 mA current output and RS-485 / RS-232 communication interface.

4. Adjustable hysteresis (dead band) prevents the relay from switching too frequently.

5. Built-in watchdog; data retention after power failure exceeds 10 years.

6. Dual-relay upper and lower limit alarm output.

7. The sensor is temperature-compensated, which corrects the influence of temperature on the speed of sound.

8. Special functional requirements can be customised.

III. Technical Specifications

Measuring range0–5 m, 0–10 m, 0–15 m, 0–20 m, 0–30 m, over 50 m
Resolution0.001 m
Power supplyAC 220 V / DC 24 V, input power ≥ 5 W
OutputRS485, 4–20 mA, relay (optional), HART protocol (optional), NB / GPRS / LORA communication (optional)
Blind zone0.6–0.9 m (determined by the range)
Protection classIP65 (controller) / IP68 (sensor)
Operating temperature0–60 °C (non-freezing)
Storage temperature−10–60 °C
InstallationImmersion mounting
Controller dimensionsWall-mounted, 156 × 150 × 85 mm
Cut-out sizeWall-mounted, 156 × 94 mm
Cable length10 m standard (extendable on request)
The video is currently in production, please stay tuned......
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