The Rotronic HygroFlex1 (HF1) series consists of highly efficient HVAC transmitters engineered for precise relative humidity and temperature monitoring. Equipped with the field-proven Rotronic Hygromer® IN-1 capacitive sensor, these instruments convert environmental conditions into linear analogue output signals for seamless integration with automation networks. They function as fundamental building blocks for modern climate control tracking, optimising indoor comfort and commercial energy efficiency.
While standard HVAC instruments compromise performance for affordability, the HF1 series stands out by delivering long-term calibration stability and dual freely scalable analogue outputs. Its versatility is further amplified by diverse installation enclosures—including robust wall and duct form factors, alongside a dedicated space-mounted profile for architecturally sensitive installations.
Installation Notes: To avoid measurement offsets, ensure at least 50 mm of the duct probe configuration is inserted directly into the measuring airflow path.
Commercial Availability Note: The listed Wall (Type W) and Duct (Type D/F) models are available for flexible volumes, the other version and all of the Space Mounted (Type S) are subject to a Minimum Order Quantity (MOQ) of 100 units per order block.
Applications
Frequently Asked Questions
HygroFlex HF1 Transmitter, HF120-WB1XX1XX, for relative humidity and temperature measurement in a wall mounted enclosure. Standard Temperature Range: 0-50°C and Humidity 0-100%RH with Accuracy <±2%RH. 2 x 2-Wire Transmitter with 4-20mA Outputs.
HygroFlex HF1 Transmitter, HF132-WB1XD1XX, for relative humidity and temperature measurement with display in a wall mounted enclosure. Standard Temperature Range: 0-50°C and Humidity 0-100%RH with Accuracy <±2%RH. 3-Wire Transmitter with 4-20mA Outputs.
HygroFlex HF1 Transmitter, HF132-WB1XX1XX, for relative humidity and temperature measurement with a wall mounted enclosure. Standard Temperature Range: 0-50°C and Humidity 0-100%RH with Accuracy <±2%RH. 3-Wire Transmitter with 4-20mA Outputs.
HygroFlex HF1 Transmitter, HF132-DB1XX1XX, for relative humidity and temperature measurement. Includes a 100mm duct mounted probe and IP65 ABS enclosure. Standard Temperature Range: 0-50°C and Humidity 0-100%RH with Accuracy <±2%RH. 3-Wire Transmitter with 4-20mA Outputs.
HygroFlex HF1 Transmitter, HF120-FB1XX1XX, for relative humidity and temperature measurement. Includes a 400mm duct mounted probe and IP65 ABS enclosure. Standard Temperature Range: 0-50°C and Humidity 0-100%RH with Accuracy <±2%RH. 2 x 2-Wire Transmitter with 4-20mA Outputs.
If you require a different configuration than those listed above, please contact to discuss your options. The HygroFlex HF3 range may have suitable alternatives available without the MOQ restrictions.
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