Humidity & Temperature Sensors

Siemens QFA2000 – High-Accuracy RH & Temperature Sensor

Reliable Sensing for Demanding Climate Control Systems

The Siemens QFA2000 is a precision humidity and temperature sensor designed for high-performance applications in HVAC systems, storage environments, cleanrooms, and controlled process areas. It provides accurate and stable measurements of relative humidity and temperature, making it ideal for environments that require consistent air quality and climate control.

With a compact form factor and long-term stability, the QFA2000 ensures optimal performance in building automation and indoor air quality systems.

Key Applications:

• Commercial buildings and office spaces
• Laboratories and healthcare environments
• Cleanrooms and equipment rooms
• Storage and data centers

Features & Benefits:

• High-precision RH and temperature measurement
• Excellent long-term stability and reliability
• Analog output options (0–10 V, 4–20 mA)
• Maintenance-free operation
• Designed for wall-mount installations
• Seamless integration into Siemens HVAC systems

Siemens QFM2101 – Duct-Mount Sensor for Air Handling Units

Robust and Accurate Climate Monitoring Inside Ductwork

The Siemens QFM2101 is a duct-mounted temperature and humidity sensor engineered for air handling units (AHUs), ventilation ducts, and building climate control systems. It offers precise measurement of relative humidity and temperature directly in the airflow, enabling efficient and responsive HVAC regulation.

With reliable analog outputs and durable construction, the QFM2101 is ideal for installations where space, airflow dynamics, and environmental conditions demand robust sensing.

Typical Applications:

• Air Handling Units (AHUs)
• Supply and return air ducts
• Industrial ventilation systems
• Large-scale HVAC systems

Features & Benefits:

• Direct duct air monitoring for RH and temperature
• Accurate and stable measurement even in varying airflow
• Long-lasting performance with minimal maintenance
• Analog output compatibility (0–10 V / 4–20 mA)
• Durable sensor head and secure mounting design
• Ideal for integration into Siemens Desigo and other BMS platforms