TCS Basys TH1021 Humidity Transmitter

The TCS Basys TH1021 is a commercial-grade relative humidity transmitter engineered for precise duct mount monitoring within building automation systems. Built for the rigors of field service, this unit utilizes a capacitive polymer sensor to deliver a standard 4-20mA output signal, ensuring reliable data transmission even over long wire runs in high-interference environments. With a +/-3% humidity accuracy rating across a 0 to 100% RH range, the TH1021 provides the stable feedback required for critical HVAC automation and indoor air quality management.

Designed for straightforward mechanical contractor installation, the transmitter features a durable probe assembly and a secure enclosure that stands up to industrial HVAC conditions. The 2-wire, loop-powered configuration simplifies field wiring to BMS controllers and PLCs, while the native TCS Basys compatibility allows for seamless integration into Ubiquity Cloud or standalone BAS networks. For veteran technicians, the manual field calibration capability and reverse polarity protection provide the necessary safeguards to ensure long-term stability and system uptime without frequent maintenance callbacks.

Key Benefits

• High-Accuracy RH Sensing: Rated at +/-3% accuracy to maintain tight control over indoor air quality and building humidity levels.
• Durable Duct Mount Design: Optimized for centralized air handling units (AHU) and high-velocity ductwork with a robust probe interface.
• Standardized 4-20mA Signal: Industrial-standard 2-wire transmitter output ensures compatibility with nearly any HVAC building controller.
• Rugged Reliability: Features capacitive polymer technology that resists drift and performs consistently in non-condensing commercial environments.
• Simplified Wiring: Polarity-protected circuitry reduces the risk of field installation errors during HVAC system integration.

Common Questions

Is the TH1021 compatible with non-TCS controllers?
Yes. Because it uses a linear 4-20mA humidity output, it is compatible with any BAS controller, PLC, or data logger that accepts a 4-20mA current loop signal.

What is the proper mounting depth for the probe?
For the most accurate duct humidity measurement, the probe should be centered in the air stream. Technicians should mount the unit at least three duct diameters downstream from humidifiers to avoid sensor saturation.

Can the sensor be field calibrated?
Yes, the TH1021 supports field calibration to account for site-specific conditions, though it arrives factory-calibrated for immediate deployment in most commercial HVAC applications.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.