High-quality ultrasonic level sensor utilizes advanced ultrasonic technology, the sensor determines the distance to the liquid surface by measuring the time of flight of sound waves, ensuring stable and precise readings without direct contact. Designed for harsh industrial conditions, the sensor features a PTFE anti-corrosion probe that delivers excellent resistance against aggressive chemicals such as acids and alkalis.

PTEE Corrosion-Resistant Probe

IP68 Protection Rating
The use scenarios of water level meters cover multiple fields such as industry, water conservancy, environmental protection, and energy. Its applications are diversified according to the characteristics of the measuring medium, environmental requirements, and functional requirements.
| Model | SISCO-WLM-TK-CSB5M/A |
| Measuring Range |
2m, 5m, 10m, 12m, 15m, 20m (customizable) |
| Accuracy | ±0.5% (full range) |
| Resolution | 3mm or 0.1% (whichever is greater) |
| Display | LCD display (Chinese interface) |
| Analog Output | 4–20mA (2-wire, 250Ω load)4–20mA (4-wire, 510Ω load) |
| Relay Output | Up to 2 relays (AC 277V / 1A or DC 30V / 2A), programmable |
| Power Supply | 12V DC ±10%; 24V DC ±10%; 100–240V AC |
| Ambient Temperature | -20°C to +60°C |
| Operating Temperature | Display: -20°C to +60°C Sensor: -20°C to +80°C |
| Communication | Optional RS-485 (Modbus protocol) |
| Protection Rating | Enclosure: IP66Sensor: IP68 |
| Sensor Material | ABS, PVDF, PTFE |
| Installation | Threaded or flange mounting / standard bracket |
| Cable | None (standard configuration) |
Q1: How to Read a Water Level Gauge Correctly?
A1: The key to reading a water level gauge correctly is to first check the device status and environmental conditions to ensure there are no interference factors, then use the corresponding method according to its type (such as glass tube, float type, pressure type or radar/ultrasonic) to read it, usually by looking directly or viewing the display, paying attention to the units and decimal points; at the same time, make sure the device is calibrated, and pay attention to factors such as bubbles and dirt that may affect the accuracy of the reading. Finally, record the reading and do daily cleaning and maintenance to ensure the reliability of the measurement results and the life of the equipment.
Q2: How to Calibrate a Water Level Meter?
A2: The water level meter calibration needs to be completed in a static water body. First, place the probe into a known depth (such as 0cm or standard water level) to adjust the zero point, then calibrate the range by comparing the actual water depth, and set compensation parameters according to the water temperature to eliminate thermal expansion and contraction errors. After completion, record the calibration data and recheck it regularly (such as monthly) to ensure measurement accuracy.
Q3: Common Operational Errors When Using Water Level Meters
A3: Common operational errors when using water level meters include improper installation, neglect of calibration, and neglect of environmental factors. For example, when installing the probe tilted or close to the inlet/outlet, the measured value may be too large or too small, or even fluctuate unstably; failure to perform zero point calibration or neglecting that the medium density does not match the device setting value may cause inaccurate readings.
Tips: Can the ultrasonic level sensor be used in corrosive environments?
Yes, this sensor can be used in corrosive environments. It is equipped with a PTFE (Polytetrafluoroethylene) anti-corrosion probe, which provides excellent resistance to strong acids, alkalis, and aggressive chemicals. This makes it highly suitable for demanding applications such as chemical storage tanks, wastewater treatment systems, and industrial process environments.
Additionally, the sensor features an IP68-rated probe, ensuring reliable operation even in harsh, humid, or submerged conditions.
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SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.