LQT2088 Digital Tube Display Board
Product Overview
The LQT2088 Smart Temperature Transmitter adopts an integrated design of transmission, measurement, and display. Compared to traditional discrete digital display transmitters, it saves space and reduces installation difficulty. The product is compatible with signal transmission from multiple types of thermocouples and RTDs. The LQT2088 features the following: a 24-bit Σ-Δ analog front end to ensure high measurement accuracy; comprehensive surge protection, lightning protection, and reverse polarity protection to prevent incorrect installation and operation in engineering applications; enhanced software safety design, including low-voltage monitoring reset and multi-task scheduling optimization; and all imported 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
- 4-20mA standard current output
- Wide operating voltage range
Technical Specifications
| Parameter | Specification | Parameter | Specification | |
|---|---|---|---|---|
| Operating Power | 12~35VDC | Output | 4~20mA | |
| Measurement Accuracy | RTD 0.2%; TC 0.5% | Output Current Limitation | 20.8mA | |
| Excitation Current | 0.2mA | Sensor | Various RTDs and Thermocouples | |
| Load | 250Ω or 500Ω | Transport and Storage Temperature | -40~120℃ | |
| Temperature Coefficient | ≤50ppm/℃ F.S | Housing Material | PA66 | |
| Operating Temperature | -30~80℃ | Mounting Distance | 44~45mm |
