Description
1. Ultrasonic water level distance sensor Features
- Ultrasonic water level Sensor
- High sensitivity.
- Compact and robust structure.
- IP68 high protection rating.
- Corrosion resistant casing, suitable for corrosive medium and application

2. Ultrasonic water level sensor Dimension
Unit in the diagram is mm.
Analogue / switch output
The analog/switch output can be set through RS485, and the sensor can work in 8 modes. The specific reference is as follows:
Step 1, connect to the host computer through the serial port debugging assistant or modbus poll debugging assistant.
Step 2, set a near reference distance point.
Step 3, set a far reference point
Step 4, set the output voltage or current of the near reference point.
Step 5, set the output voltage or current of the far reference point.
Step 6, set the analog output to switch characteristic selection.
Step 7, set the analog output to linear output or switch output selection.
Step 8, reset the sensor to make the new parameters effective.
The 8 working modes of switch output are as follows:
1: Window mode is on by default
2: Window mode is off by default
3: Single point mode is on by default
4: Single point mode is off by default
5: Single point hysteresis mode is on by default
6: Single point hysteresis mode is off by default
7: Presence detection mode is on by default
8: Presence detection mode is off by default
RS485 output data
RS485 output data is in MODBUS-RTU format. Please refer to the KUS550 Modbus protocol manual for details.
4. Installation conditions
If the sensor is installed at the environment temperature fall below 0℃, It should do well on the protective measures. In case of direct mounting of the sensor in a through hole using the steel nuts, it has to be fixed at the middle of the housing thread.
5. Ordering information
| K US | Model | Output_ _ | Max range | Description |
| 550 | ||||
| Customized | ||||
| SW | Switch Output | |||
| mA | 3 wire 4-20mA output | |||
| 10V | Output is Vout 0-10V | |||
| 5V | Output is Vout 0-5V | |||
| 3V | Output is Vout 0-3V | |||
| RS485 | Output is RS485 | |||
| TTL | UART TTL output | |||
| XX m | XX m is the maximum range can be detected
Default is 2.5m |
|||
| KUS | 550 | RS485 | 2m | |
| Parameter | Specification |
|---|---|
| Model | KUS550 |
| Measuring Range | 1m 3m (4m customizable) |
| Blind Zone* | 0~0.15m@1m, customizable small blind zone version: 0~0.12m 0~0.25m@3m, customizable small blind zone version: 0~0.2m (The small blind zone version requires a power supply voltage of 12V or above) |
| Supply Voltage | 3.3… 30 VDC, 12~30VDC (analog output), ripple 10 %SS |
| Working Current | ≤ 45 mA (fastest measurement speed), typical power consumption 5mA |
| Output Signal | 1. Programmable analog output 0-10V/4-20mA 2. RS485/UART communication 3. Relay switch output/NPN/PNP |
| Measurement Accuracy | 0.5 %~1%F.S. |
| Temp. Compensation | Yes |
| Working Conditions | |
| Working temperature | -25…70℃ (248…343K) |
| Storage temperature | -40…85℃ (233…358K) |
| Other Instructions | |
| Electrical connection | Default 1.5m long PVC cable |
| Protection class | IP65 (IP68 customizable) |
| Shell material | PVDF (default) / PTFE / ABS |
| *The area within the blind zone is an unstable working zone, and it is not recommended to operate within this range. | |
