1. Introduction
The Tzone THT03C is an industrial-grade temperature and humidity transmitter designed for accurate environmental monitoring. It features a 4-20mA analog output, providing strong anti-interference capabilities and high precision. This device is suitable for various applications requiring reliable temperature and humidity data transmission.
Key features include:
- 4-20mA Analog Output: Ensures stable signal transmission and strong anti-interference.
- Wide Measurement Range: Temperature from -40 ℃ to 125 ℃; Humidity from 5% to 95% RH.
- High Accuracy: Utilizes an industrial-grade CMOS chip SHT30 sensor for enhanced stability.
- Digital LCD Display: Provides real-time temperature and humidity readings.
- Wall-Mounted Design: Simplifies installation in various environments.
Video Description: This video provides an overview of the Tzone Digital Temperature Humidity Transmitter, highlighting its features and 4-20mA current output capabilities. It demonstrates the device's design and functionality.
2. Safety Information
Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in electric shock, fire, or damage to the product.
- Power Supply: Ensure the power supply voltage is within the specified range of DC 12V to 30V. Incorrect voltage can damage the device.
- Wiring: All wiring should be performed by qualified personnel in accordance with local electrical codes. Ensure power is disconnected before making any connections.
- Environment: Do not expose the device to extreme temperatures, high humidity (outside specified operating range), corrosive gases, or strong vibrations.
- Maintenance: Do not attempt to open or repair the device yourself. Refer all servicing to authorized personnel.
- Cleaning: Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
3. Setup and Installation
3.1 Unpacking
Carefully unpack the THT03C transmitter and verify that all components are present:
- Temperature Humidity Transmitter (THT03C) x 1
- User Manual x 1
- Mounting Screws and Wall Plugs
Image Description: This image displays the Tzone THT03C Temperature Humidity Transmitter along with its included accessories: mounting screws and wall plugs, ready for installation.
3.2 Mounting
The THT03C is designed for wall mounting. Choose a location that accurately represents the environment to be monitored, away from direct heat sources, ventilation outlets, or direct sunlight, which could affect readings.
- Mark the desired mounting points on the wall using the transmitter as a template.
- Drill pilot holes at the marked points.
- Insert the wall plugs (if necessary) into the drilled holes.
- Secure the transmitter to the wall using the provided screws.
Image Description: This image illustrates the initial installation steps for the THT03C, including unscrewing the casing and a detailed table outlining the wiring connections for VCC, GND, Temp, and Humi.
3.3 Wiring
The THT03C uses a three-wire system for its 4-20mA output. Refer to the wiring diagram and table below for correct connections. Ensure the power supply is off before wiring.
Image Description: A clear wiring diagram demonstrating how to connect the THT03C transmitter to a 12-30V DC power source and a supervisory device for temperature (I-TEMP) and humidity (I-HUMI) 4-20mA outputs. It also shows load resistors.
| Terminal | Description |
|---|---|
| VCC | Power+ (DC 12-30V) |
| GND | Power- |
| I-TEMP | Temperature 4-20mA Output |
| I-HUMI | Humidity 4-20mA Output |
4. Operation
4.1 Power On
After completing the wiring, apply power to the device. The LCD screen will illuminate and display the current temperature and humidity readings. The recording interval for displayed values is 10 seconds.
Image Description: A close-up of the THT03C's digital LCD screen, clearly showing real-time temperature and humidity values, along with a detailed view of the external sensor probe.
4.2 Reading Data
The LCD screen provides direct readings. For remote monitoring, the 4-20mA output signals for temperature and humidity can be connected to a PLC, frequency converter, or other supervisory equipment. This allows for simultaneous monitoring of multiple sensors and integration into larger control systems.
Image Description: This diagram illustrates a system where multiple THT03C transmitters are powered by a DC 12-30V source and send their 4-20mA current outputs to a central supervisory device for comprehensive environmental monitoring.
5. Maintenance
The THT03C transmitter is designed for low maintenance. Regular checks can help ensure optimal performance.
- Cleaning: Periodically clean the exterior of the device and the sensor probe to prevent dust accumulation. Use a soft, dry cloth. Do not use liquids or sprays directly on the sensor.
- Inspection: Visually inspect the wiring and connections for any signs of damage or corrosion.
- Environmental Conditions: Ensure the operating environment remains within the specified temperature and humidity ranges to prevent damage and maintain accuracy.
6. Troubleshooting
If you encounter issues with your THT03C transmitter, refer to the following common problems and solutions:
- No Display/No Power:
- Check the power supply connections (VCC and GND) to ensure they are secure and correctly wired.
- Verify that the power supply voltage is within the DC 12-30V range.
- Incorrect Readings:
- Ensure the sensor probe is clean and free from obstructions.
- Verify the device is not exposed to direct heat, cold, or excessive moisture that could skew readings.
- Check the wiring for the I-TEMP and I-HUMI outputs for correct polarity and secure connections to your supervisory device.
- Note: The device does not support user calibration. If persistent inaccuracies are observed, contact technical support.
- No 4-20mA Output:
- Confirm the power supply is active and the device is displaying readings.
- Inspect the I-TEMP and I-HUMI wiring for breaks or incorrect connections.
- Verify the supervisory device is correctly configured to receive 4-20mA signals.
7. Specifications
Detailed technical specifications for the Tzone THT03C Temperature Humidity Transmitter:
Image Description: This image provides a dimensional drawing of the THT03C transmitter, indicating its length (109mm), height (67mm), depth (40mm), and sensor protrusion (20mm, 31mm).
| Parameter | Value |
|---|---|
| Model | THT03C |
| Output | 4-20mA |
| Temperature Measuring Range | -40 ℃ to 125 ℃ |
| Humidity Measuring Range | 5% to 95% RH |
| Power Supply Voltage | DC 12V to 30V |
| Temperature Accuracy | ±0.3℃ (0~60℃), ±0.5℃ (other range) |
| Humidity Accuracy | ±2% RH (10%~90%), ±5% (other range) |
| Operating Temperature | -40℃ to 85℃ |
| Operating Humidity | 5% to 95% RH (non-condensing) |
| Mounting Type | Wall Mount |
| Product Dimensions (W x H) | 2.64"W x 4.29"H (approx. 67mm x 109mm) |
| Battery | No batteries required |
8. Applications
The Tzone THT03C is suitable for a wide range of industrial and commercial applications, including but not limited to:
- Agricultural Greenhouses
- HVAC Systems
- Energy Power Facilities
- Flower Breeding Environments
- Traffic Tunnels
- Laboratories
- Computer Rooms / Data Centers
- Industrial Delivery Rooms / Warehouses
- Food Storage Facilities
Image Description: This image displays a collage of diverse environments, including agricultural greenhouses, HVAC systems, energy power plants, traffic tunnels, laboratories, and computer rooms, illustrating the broad applicability of the THT03C transmitter for temperature and humidity monitoring.
9. Warranty and Support
Tzone products are manufactured to high-quality standards. For warranty information or technical support, please refer to the contact details provided with your purchase documentation or visit the official Tzone website. Please retain your proof of purchase for warranty claims.
