UL101 – Ultrasonic Water Level Transmitter
The UL101 Ultrasonic Water Level Transmitter provides accurate, non-contact measurement of water in tanks, reservoirs, and wastewater systems. Compact, reliable, and low-maintenance for general water applications.
Applications:
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Water tanks and cisterns
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Reservoirs and dams
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Sewage and wastewater treatment plants
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Agricultural irrigation systems
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Flood monitoring and early warning systems
Description
The UL101 ultrasonic water level transmitter is a compact, cost-effective sensor for non-contact measurement of water levels up to 15 m. Combining ultrasonic and temperature sensors with SMD and ASIC technology, it delivers accurate readings in various environmental conditions.
Gold-plated circuit boards, internal electromagnetic shielding, and digital filters ensure stable measurements. Corrosion-resistant PVDF and PP probes make UL101 ideal for reservoirs, water tanks, wastewater facilities, and agricultural irrigation systems.
With no moving parts, the sensor is wear-resistant, low-maintenance, and provides reliable long-term performance.
Key benefits:
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Non-contact measurement, unaffected by liquid properties
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LCD display for easy local reading
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Shock, sunlight, and water resistant
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Easy installation and minimal maintenance
Features
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Non-contact water level measurement up to 15 m
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Integrated ultrasonic and temperature sensors
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Gold-plated circuit boards and electromagnetic shielding
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Digital filters for stable signals
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Robust, wear-resistant design with no moving parts
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Corrosion-resistant PVDF and PP probes
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LCD display for local measurement readout
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Low-maintenance, long-lasting performance
Specification
| Range | 5, 7,10,12,15m optional |
| Blind Area | ≤300 ~ 1200 mm (according to different range and sensor) |
| Output | Voltage:1 ~ 5V/ 0~5V 3 wires
Current:4 ~ 20mA 2 wires , 3 wires and 4 wires according to range serial port:RS485/ RS232 NPN Switch signal or Relay alarm output (1 or 2 channels optional) |
| Power Supply | DC24V/300mA (UL101); 12VDC or 24Vdc/300mA (UL103, IP66,IP68 optional); |
| Accuracy | 0.5%FS (at blind-fold drive away, 25℃) |
| Operating temp. | -10…60 ℃ (-20 to +70 by Customized) |
| Storage temp. | – 40 ℃ ~ 85 ℃ |
| Installation mounting size | M68*2.0 |
| IP rating | IP65 (default),IP66-IP68 (customized!) |
FAQ
1. What applications is UL101 suitable for?
UL101 is ideal for water level measurement in reservoirs, water tanks, wastewater treatment facilities, and agricultural irrigation systems.
2. How does the ultrasonic water level transmitter work?
The sensor emits ultrasonic pulses that reflect off the water surface. The echo time is measured and converted into water level readings – precise and non-contact.
3. What are the advantages of UL101?
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Non-contact measurement for hygienic and corrosive environments
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Compact design for space-constrained installations
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Durable construction, low maintenance, long-lasting
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Accurate readings up to 15 m
4. How accurate is UL101?
Thanks to SMD and ASIC technology and digital filtering, UL101 delivers stable and reliable readings across the full measurement range.
5. Can the sensor be used outdoors?
Yes. The robust housing is dust- and water-resistant, making it suitable for reservoirs or open channels.
Datasheet
UL101 Ultrasonic Water Level Transmitter Datasheet
