RHT Relative Humidity and Temperature Transmitters

Description

The RHT-WM (Wall Mount) and RHT-DM (Duct Mount) series are high-precision, microprocessor-based transmitters designed to monitor relative humidity and temperature in ambient environments and air ventilation ducts. These specialised models incorporate advanced capacitive sensor arrays to convert raw atmospheric changes into highly accurate, linear 4 to 20 mA analogue output loop signals. Engineered with native galvanic isolation between the two loops, they prevent ground-loop interference and integrate seamlessly into industrial PLCs, data loggers, and Building Management Systems (BMS). Users can easily customise measurement ranges, switch polarity, or map outputs to retransmit Dew Point by using the TxConfig-USB digital interface alongside the complimentary SigNow setup software.

Key Features

• Two 4-20mA Linear Outputs: Transmits independent, loop-powered 4 to 20 mA or reversed 20 to 4 mA signals for concurrent temperature and humidity monitoring.
• True Galvanic Loop Isolation: Features isolated dual current loops to eliminate electrical cross-talk and maintain clean signal integrity across heavy industrial distribution environments.
• Configurable Outputs: Allows engineers to reassign the humidity transmission channel to calculate and broadcast precise real-time Dew Point values.
• Tailored Form Factors: Available as a low-profile RHT-WM housing for ambient room monitoring or an extended probe-style RHT-DM with an integrated mounting flange for deep duct penetration.
• Ruggedised Split-Shield Design: Built with a high-durability IP65 main electronics enclosure to shield tracking circuits while leveraging an IP40 capsule to expose the tracking sensor for fast thermal tracking.

Specifications