Compact Ultrasonic Level Sensor (M30 Thread) | UL106
Rugged M30 Compact Non-Contact Ultrasonic Level Sensor
Designed for space-constrained industrial vessels, small sumps, and liquid tanks up to 2 meters. Built in a robust metal M30 housing with an IP67/IP68 rating for harsh, outdoor, or washdown conditions.
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Measuring Range: 0.1 m – 1.0 m / 2.0 m (model dependent)
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Housing Material: Copper chrome-plated brass or SUS304 Stainless Steel
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Signal Outputs: 4–20 mA, 0–10 V, or RS485 (Modbus RTU)
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Process Connection: Standard M30 × 1.5 Thread
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Ideal For: Water, wastewater, light oils, and non-corrosive industrial liquids.
Description
Reliable Non-Contact Level Measurement in Tight Industrial Spaces
The UL106 Ultrasonic Level Transmitter combines industrial durability with an ultra-compact M30 form factor. Designed for automated liquid monitoring where traditional large-flange sensors cannot fit, the UL106 delivers accurate, real-time level measurements without coming into direct contact with the process fluid.
Engineered for Demanding Industrial & Outdoor Environments
Equipped with an IP67/IP68 waterproof enclosure and a solid metal body (SUS304 / Chrome-plated brass), the UL106 withstands heavy outdoor rainfall, humidity, and high-dust environments. Its solid-state transducer ensures long-term maintenance-free operation with zero moving parts to wear out or clog.
Key Applications:
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Small Storage & Buffer Tanks: Continuous liquid level monitoring in compact vessels.
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Water & Wastewater Treatment: Sump pits, channel depth, and drainage wells.
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OEM Machinery & Skid Build: Easy integration into compact pump systems and lubrication reservoirs.
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Liquid Dispensing Systems: Non-contact measurement for oils, coolant, and clean industrial liquids.
Features
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Ultra-Compact M30 Thread: Fits effortlessly into standard 1-inch / M30 tapped holes or bracket mounts.
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Non-Contact Technology: Prevents fouling, corrosion, and maintenance downtime common with float switches.
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Industrial Output Options: Choose between analog outputs (4–20 mA / 0–10 V) for PLC inputs or digital RS485 Modbus RTU for multi-sensor networks.
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High Ingress Protection (IP67/IP68): Fully sealed construction guarantees reliable performance outdoors or in damp sumps.
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Blind Zone Minimization: Optimized close-range measurement starting from just 10 cm.
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Wide Voltage Supply: Supports standard industrial 12–24 VDC power sources.
Specification
| Parameter | Specification |
| Model | UL106 Series |
| Measurement Range | 0.1 m – 1.0 m / 0.15 m – 2.0 m |
| Blind Zone | 100 mm – 150 mm |
| Accuracy | ±0.3% FS or ±2 mm (whichever is greater) |
| Output Options | 4–20 mA, 0–10 V, RS485 Modbus RTU |
| Power Supply | 12–24 VDC |
| Process Connection | M30 × 1.5 Thread |
| Housing Material | SUS304 Stainless Steel / Copper Chrome Plated Brass |
| Ingress Protection | IP67 / IP68 |
| Operating Temperature | -20°C to +60°C |
| Suitable Media | Water, wastewater, light oils, non-corrosive liquids |
FAQ
Q: Can the UL106 be used for measuring strong acids or alkalis?
A: No. The UL106 features a metallic housing designed for general liquids like water, wastewater, light oils, and non-corrosive solutions. For strong acids, corrosive gases, or aggressive chemical tanks, please check our Anti-Corrosion PTFE Ultrasonic Sensor Series.
Q: What is the blind zone, and why does it matter?
A: The blind zone is the area directly in front of the sensor face where measurements cannot be taken (10–15 cm for the UL106). Ensure the liquid level does not rise above this minimum distance to maintain accurate readings.
Q: How do I mount the UL106 sensor?
A: The sensor features an M30 × 1.5 male thread, allowing it to be screwed directly into a threaded socket on top of a tank or mounted using a standard L-bracket over open sumps or channels.
Q: Does the UL106 support PLC integration via Modbus?
A: Yes, versions equipped with the RS485 output communicate using standard Modbus RTU, allowing easy multi-sensor daisy chaining into PLCs, gateways, or IoT systems.
