LQT202G Temperature Transmitter
Product Overview
The LQT202G Isolated Temperature Transmitter Module features high isolation voltage, capable of handling most EFT pulse interference and RF conducted interference in the field. Functionally, the LQT202G is suitable for signal transmission of up to ten types of thermocouples and RTDs. The product uses a 24-bit Σ-Δ analog front end to ensure high measurement accuracy; comprehensive anti-surge and reverse polarity protection design avoids incorrect installation and operation in engineering applications; enhanced software safety design includes low-voltage monitoring reset, multi-task scheduling optimization, and other functions. The LQT202G uses industrial-grade components throughout, ensuring long service life and stability. To facilitate long-term stockpiling for key customers, configuration can be performed using a USB communication cable without the need for an external power supply.
Key Features
- Supports multiple types of temperature sensor inputs
- 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 | |
|---|---|---|---|---|
| Operating Power | 12~35VDC | Output | Two-wire 4~20mA | |
| Measurement Accuracy | RTD 0.1%; TC 0.2% | Output Current Limit | 20.8mA | |
| Excitation Current | 0.2mA | Sensor | Various RTDs and Thermocouples | |
| Load | ≤ 600Ω | Transport and Storage Temperature | -40~120℃ | |
| Temperature Coefficient | 30ppm/℃ F.S | Insulation Strength | AC 1.5kV, 1min. | |
| Operating Temperature | -30~80℃ | Insulation Resistance | ≥100MΩ @ 500Vdc |
