1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of the Taidacent RS485 Non-Isolated Temperature and Humidity Monitor. This device is designed for accurate measurement and monitoring of environmental temperature and humidity, offering various signal output options including RS485, DC 0-5V, 0-10V, and 4-20mA.
Please read this manual thoroughly before using the product to ensure correct operation and to prevent damage.
2. Safety Information
- Ensure the power supply voltage is within the specified range (DC12V-24V) to avoid damage to the device.
- Do not expose the device to extreme temperatures, direct sunlight, or high moisture environments beyond its operating limits.
- Avoid strong vibrations or impacts.
- Do not attempt to open or modify the device. Refer all servicing to qualified personnel.
- Disconnect power before performing any wiring or maintenance.
3. Product Overview
The Taidacent Temperature and Humidity Monitor is a compact and reliable sensor for various applications requiring environmental monitoring. It features a robust design suitable for tabletop mounting.
Figure 3.1: Taidacent RS485 Temperature and Humidity Monitor (Model LGBHT-F485B). This image shows the top view of the device, highlighting its ventilated casing and the green terminal block for connections.
Figure 3.2: Taidacent Temperature and Humidity Monitor (Model LGBHT-DAI-B). This image displays an alternative model with a similar external design, indicating potential variations in internal components or output types.
4. Specifications
| Parameter | Value |
|---|---|
| Temperature Range | -20 to 80 °C |
| Temperature Accuracy | ±0.5°C (at 25°C/60%RH) |
| Humidity Range | 0-100% RH |
| Humidity Accuracy | ±3%RH (at 25°C/60%RH) |
| Power Supply | DC12V-24V |
| Signal Output Options | DC 0-5V, 0-10V, 4-20mA, RS485 |
| Load Resistance (Voltage Output) | R load ≥10KΩ |
| Load Resistance (Current Output) | R load ≤ (Uvcc-3)/0.02 ohm |
| Power Consumption | 1W |
| Storage Conditions | 10-50°C (0-125°C peak), 20-60% RH |
| Mounting Type | Tabletop |
5. Setup and Installation
5.1 Mounting
The device is designed for tabletop placement. Ensure it is placed on a stable, flat surface away from direct heat sources, strong air currents, or areas with high vibration. For optimal accuracy, position the sensor in the center of the environment to be monitored.
5.2 Wiring Connections
Refer to the terminal block on the device for wiring. Ensure all connections are secure and correct before applying power.
- Power Supply: Connect DC12V-24V to the designated power input terminals. Observe polarity.
- RS485 Output: For RS485 communication, connect the A and B terminals to your RS485 network.
- Analog Outputs (0-5V, 0-10V, 4-20mA): If using analog output, connect the corresponding output terminal to your receiving device. Ensure the load resistance meets the specified requirements:
- Voltage Output: R load ≥10KΩ
- Current Output: R load ≤ (Uvcc-3)/0.02 ohm
Note: Specific pin assignments may vary slightly between models (e.g., LGBHT-DAI-B vs. LGBHT-F485B). Always consult the label on your specific unit for precise terminal identification.
6. Operating Instructions
Once properly installed and powered, the Taidacent Temperature and Humidity Monitor will begin taking measurements automatically. The output signal (RS485, 0-5V, 0-10V, or 4-20mA) will reflect the current temperature and humidity readings.
- RS485 Communication: For RS485 models, use appropriate software or a master device to communicate with the sensor and read data. Refer to the RS485 communication protocol documentation (not included in this manual) for details on addressing and data formats.
- Analog Output: For analog output models, connect the output to a compatible data acquisition system, PLC, or display unit that can interpret the voltage or current signals.
The device operates continuously as long as power is supplied. No user interaction is typically required for basic measurement once configured.
7. Maintenance
- Cleaning: Gently wipe the exterior of the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the ventilation slots remain clear of dust and debris.
- Calibration: The sensor is factory calibrated. If recalibration is required, it should be performed by qualified personnel using appropriate calibration equipment.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to maintain accuracy and device longevity.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No output/Device not responding | Incorrect power supply voltage or polarity; Loose wiring; Device malfunction. | Verify power supply (DC12V-24V) and polarity. Check all wiring connections. If problem persists, contact support. |
| Inaccurate readings | Sensor placed in unsuitable environment (e.g., near heat source, strong airflow); Sensor dirty; Calibration drift. | Relocate the sensor to a more representative area. Clean the sensor exterior. Consider professional recalibration if necessary. |
| RS485 communication errors | Incorrect wiring (A/B swapped); Incorrect baud rate or address; Bus termination issues. | Check RS485 A/B wiring. Verify communication parameters in software. Ensure proper bus termination if multiple devices are on the bus. |
| Analog output incorrect | Incorrect load resistance; Wiring error; Receiving device misconfiguration. | Verify load resistance meets specifications. Check analog output wiring. Ensure receiving device is configured for the correct signal type (0-5V, 0-10V, or 4-20mA). |
9. Warranty and Support
Taidacent products are manufactured to high-quality standards. This product comes with a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims.
For technical support, troubleshooting assistance, or warranty inquiries, please contact your retailer or visit the official Taidacent website for contact information.
Note: Warranty terms and conditions may vary by region and retailer.