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Technical Specifications
| Performance | ||
| Measured Variable | Level / Object level | |
| Measuring Range | 0–5 m / 0–10 m | |
| Dead Zone | 5 m range: ≤ 0.3 m | |
| 10 m range: ≤ 0.4 m | ||
| Accuracy | ±0.5% FS | |
| Resolution | 1 mm or 0.1% FS (whichever is greater) | |
| Ingress Protection | Instrument: IP65 | |
| Sensor/Probe: IP68 | ||
| Output | ||
| Analog Output | 4–20 mA, current output accuracy 0.2% FS | |
| Two-wire: Load resistance RL = (U − 18 V) / 0.02 A, where U is the supply voltage |
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| Four-wire: Load resistance RL = (U − 14 V) / 0.02 A, where U is the supply voltage |
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| Alarm Output | 2× SPST relays (optional for four-wire type) | |
| Contact rating: 250 VAC, 3 A | ||
| Communication Output | RS485 (optional for four-wire type),Modbus-RTU protocol | |
| Power Supply | ||
| Supply Voltage | 18–28 VDC | |
| Power Consumption | Two-wire type | Maximum power consumption: 0.48 W |
| Four-wire type | No relay, no analog output: max. 0.4 W | |
| 1 relay ON, no analog output: max. 0.5 W | ||
| 2 relays ON, no analog output: max. 0.7 W | ||
| No relay, with analog output: max. 0.8 W | ||
| 1 relay ON, with analog output: max. 0.9 W | ||
| 2 relays ON, with analog output: max. 1.1 W | ||
| Electrical Connection | M20 × 1.5 | |
| Process Conditions | ||
| Process Pressure | 0.3 MPa | |
| Ambient Conditions | ||
| Operating Temperature | Instrument: −20 to 60 °C | |
| Sensor/Probe: −20 to 80 °C | ||
| Storage Temperature | −20 to 80 °C | |
| Humidity | 10% to 85% RH | |
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Applications
The integrated ultrasonic level meter is suitable for non-contact level and distance measurement in various applications, including:
Municipal & Water Management
Rivers, reservoirs, channels, and water storage facilities
Chemical Industry
Liquid tanks, process vessels, and storage containers
Storage & Transportation
Storage tanks, silos, and bulk material containers
Industrial Process Control
Level monitoring in production and auxiliary systems
Solid Material Level Measurement
Silos, bins, and hoppers containing powders or granules
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Measuring principle
Ultrasonic level measurement is based on the reflection of ultrasonic waves at the interface between media with different densities, such as air and liquid or solid materials.
The ultrasonic transducer emits ultrasonic pulses toward the target surface. When the sound waves encounter the surface of the liquid or material, they are reflected back and received by the transducer. The instrument calculates the distance by measuring the transmission time of the ultrasonic signal.
Using the known speed of sound in air, the level or distance is accurately calculated.
Measurement parameters:
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BD – Blind distance
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H – Installation height
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F – Measuring range
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D – Distance from transducer surface to material surface
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L – Level
Note:
For liquid level measurement, the installation height and measurement mode must be configured via the menu.
Liquid level = Installation height − Measured distance.
