LQT4022E dual display card
Product Overview
The dual display intelligent temperature transmitter adopts an integrated design of transmission, measurement, and display, saving space and reducing installation difficulty compared to traditional discrete digital display transmitters. This product is compatible with multiple types of thermocouple and RTD signal transmission. It features the following: a 24-bit Σ-Δ analog front end for high measurement accuracy; comprehensive surge, lightning, and reverse polarity protection to prevent misinstallation and misoperation in field applications; enhanced software safety design, including low-voltage monitoring reset and multitasking scheduling optimization; and all industrial-grade components for extended service life and stability.
Key Features
- Supports input from multiple types of temperature sensors
- High-precision measurement with accuracy up to 0.1%
- Excellent temperature stability
- 4-20mA standard current output
- Wide operating voltage range
Technical Specifications
| Parameter | Specification | Parameter | Specification | |
|---|---|---|---|---|
| Working Power Supply | 12~35VDC | Output | 4~20mA | |
| Measurement Accuracy | RTD 0.1%; TC 0.2% | Output Current Limiting | 20.8mA | |
| Excitation Current | 0.2±0.01mA | Sensor | Various types of RTDs and thermocouples | |
| Load | 250Ω or 500Ω | Transport and Storage Temperature | -40~120℃ | |
| Temperature Coefficient | ≤25ppm/℃ F.S | Housing Material | PA66 | |
| Operating Temperature | -30~80℃ | Mounting Spacing | 44～45mm |
