level transmitter circuit
LQL485M RS485 Module
LQL485M
Product Overview
The LQL485M liquid level transmitter module is also suitable for reed switch liquid level sensors. LQL485M features comprehensive electrical isolation to reduce damage and interference from high-current signals on the RS485 bus to equipment. This product uses a 24-bit Σ-Δ analog front end to ensure high measurement accuracy; comprehensive surge, lightning, and reverse polarity protection prevent misinstallation and misoperation in engineering applications; enhanced software safety design includes low-voltage monitoring reset, multi-task scheduling optimization, and other functions. LQL485M uses all industrial-grade components to ensure long service life and stability.
Key Features
- Supports multiple types of temperature sensor inputs
- High-precision measurement, accuracy up to 0.2%
- Excellent temperature stability
- RS485, Modbus output
- Wide operating voltage range
Technical Specifications
| Parameter | Specification | Parameter | Specification | |
|---|---|---|---|---|
| Operating Power | 12~35VDC | Output | RS485, Modbus | |
| Measurement Accuracy | 0.2% | Output Current Limit | 20.8mA | |
| Excitation Current | 0.2mA | Sensor | Reed Switch | |
| Load | ≤500Ω | Transport & Storage Temperature | -40~120℃ | |
| Temperature Coefficient | ≤50ppm/℃ F.S | Housing Material | PA66 | |
| Operating Temperature | -30~80℃ | Mounting Screws | M4*2 |
