Temperature/Humidity Transducers THD Series

Product Overview

The THD series temperature and humidity transducers are designed with advanced built-in sensors that deliver precise measurements of environmental conditions. These transducers offer multiple output options, including DC 4-20 mA, 1-5 VDC, and RS485 communication, making them highly versatile for various applications. The temperature sensors in the THD series can measure within a range of -19.9 to 60.0°C, while the humidity sensors cover a range from 0.0 to 99.9% RH. The series is available in three mounting types: room type, duct mount type, and wall mount type, ensuring that there's a solution for every environment.

Key Features

• Compact Design: The transducers are engineered to be unobtrusive, allowing for easy installation in various settings.
• High-Accuracy Sensors: Built-in temperature and humidity sensors ensure reliable and precise readings, critical for maintaining optimal environmental conditions.
• Multiple Output Options: Choose from DC 4-20 mA, 1-5 VDC, or RS485 (Modbus RTU) output options to suit your specific needs.
• LED Display (Optional): Select models are equipped with a 7-segment LED display, providing clear and immediate readings for temperature and humidity (THD-DD / THD-WD models).
• Wide Measurement Range: The THD series can accurately measure temperatures from -19.9 to 60.0°C and humidity levels from 0.0 to 99.9% RH.
• Fast Communication Speed: RS485 communication is supported, with selectable speeds up to 115200 bps, ensuring quick data transmission.
• Durability: Designed to operate in a wide range of environments, the transducers are built to last, with protection structures such as IP10 and IP65 available, depending on the model.

Product Components

When you purchase a THD series transducer, you receive the following components:

• The transducer unit itself.
• A mounting bracket (included with THD-W / D models).
• An instruction manual to guide you through installation and operation.

Communication Interface

The THD series transducers support Modbus RTU protocol, making them compatible with various industrial communication standards. Here are the key aspects of the communication interface:

• Protocol: Modbus RTU
• Standard Compliance: EIA RS485
• Max. Connection: Up to 31 units can be connected simultaneously.
• Method: 2-wire half duplex, with a communication distance of up to 800 meters.
• Speed: Configurable between 1200 to 115200 bps.

Ensure that all parameters match between the THD transducers and the high-order system to maintain seamless communication. Use twisted pair wires appropriate for RS485 communication to avoid interference.

Models and Applications

The THD series offers a variety of models tailored to different needs:

• THD-R-PT: A non-display temperature sensor model with a measuring range of -19.9 to 60.0°C and high accuracy.
• THD-R-PT/C, THD-R-C, THD-R-V, THD-R-T: Models offering different output configurations for temperature and humidity measurements.
• THD-D, THD-W, THD-DD, THD-WD: Display and non-display models for comprehensive temperature and humidity monitoring, suitable for various environments and installation types.

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