Pressure transmitter circuit
LQP2485M RS485 Board
LQP2485M
Product Overview
The LQP2485M RS485 smart pressure transmitter features a four-digit digital display and is designed for pressure signal transmission using diffused silicon or ceramic piezoresistive sensors. It employs electrical isolation design to withstand strong on-site interference and high currents. A 24-bit Σ-Δ analog front-end ensures high measurement accuracy. Comprehensive surge, lightning, and reverse polarity protection prevent misinstallation and misoperation in engineering applications. Enhanced software safety includes low-voltage monitoring reset and multitasking scheduling optimization. All components are industrial-grade, ensuring long service life and stability.
Main Features
- Supports multiple types of temperature sensor input
- High-precision measurement, accuracy up to 0.1%
- Excellent temperature stability
- 4-20mA standard current output
- Wide operating voltage range
Technical Specifications
| Parameter | Specification | Parameter | Specification | |
|---|---|---|---|---|
| Power Supply | 12~35VDC | Output | 4~20mA | |
| Measurement Accuracy | 0.1% F.S. | Power Consumption | 0.3W | |
| Excitation Current | 0.2mA | Sensor | Diffused Silicon, Ceramic Sensor | |
| Load | 250Ω or 500Ω | Transport and Storage Temperature | -40~120℃ | |
| Temperature Coefficient | ≤25ppm/℃ F.S | Housing Material | ABS | |
| Operating Temperature | -30~80℃ | Mounting Screw | M4*2 |
