LQT248H HART Module
Product Overview
The LQL248HT is a high-precision, high-stability HART transmitter module that supports most HART protocol commands and some custom commands. It is suitable for reed switch resistance signal transmission. This product uses an independent 24-bit Sigma-Delta analog sampling chip to ensure high measurement precision. It features comprehensive surge protection and reverse polarity protection to prevent misinstallation and mishandling in engineering applications. Enhanced software security design includes an independent watchdog, low-voltage reset monitoring, and multi-task scheduling optimization. All components are industrial-grade to ensure long service life and stability. To facilitate long-term stocking for major customers, configuration can be performed using buttons and HART communication devices.
Key Features
- Supports multiple types of temperature sensor inputs
- High accuracy measurement, accuracy up to 0.2%
- Excellent temperature stability
- HART + 4~20mA standard current output
- Wide operating voltage range
Technical Specifications
| Parameter | Specification | Parameter | Specification | |
|---|---|---|---|---|
| Operating Power Supply | 12~35VDC | Output | HART+4~20mA | |
| Measurement Accuracy | 0.2% | Output Current Limit | 20.8mA | |
| Excitation Current | 62uA | Sensor | Magnetoresistive, Hall Effect, or Reed Switch | |
| Load | 250Ω or 500Ω | Transport and Storage Temperature | -40~120℃ | |
| Temperature Coefficient | ≤25ppm/℃ F.S | Housing Material | PA66 | |
| Operating Temperature | -30~80℃ | Mounting Screw | M3*2 |
