Siemens - Room Humidity Sensor - QFA Series

QFA2000 Series Datasheet

QFA3000 Series Datasheet

QFA1000 Series Datasheet

QFA2000 Description:

Achieving the perfect indoor climate has never been easier with the Siemens Room Humidity Sensor from the QFA2000 Series. This advanced sensor is designed to provide accurate and reliable measurements of both relative humidity and temperature, ensuring your space remains comfortable and well-regulated.

Key Features:

• Flexible Power Options: Operating with AC 24 V or DC 13.5–35 V, this sensor adapts to your electrical setup, ensuring compatibility with your existing systems.

• Precise Signal Outputs: The sensor offers DC 0-10 V or 4-20 mA signal outputs for relative humidity, providing you with real-time data on your indoor environment.

• Dual Measurements: The QFA2000 Series doesn't stop at humidity; it also measures temperature. You can choose from different temperature signal outputs, including passive, LG-Ni 1000, T1 (PTC), or active DC 0-10 V.

• Exceptional Accuracy: With an impressive accuracy level of ±3% r.h. within the comfort range, you can trust that your indoor climate is being monitored with precision.

• Wide Operating Range: This sensor is built to withstand temperatures from -15°C to +50°C and humidity levels from 0 to 95% r.h. (non-condensing), making it suitable for a variety of environments.

Applications:

The Siemens Room Humidity Sensor from the QFA2000 Series is the perfect solution for ventilating and air conditioning systems. It is designed to accurately measure relative humidity and temperature in rooms. Whether you need a control sensor or a measuring sensor for building automation and control systems, the QFA2000 Series has you covered.

Type Summary:

• QFA2000: Measures relative humidity with a signal output of DC 0-10 V, operating with AC 24 V or DC 13.5–35 V.

• QFA2001: Measures relative humidity with a signal output of 4-20 mA, operating with DC 13.5–35 V.

• QFA2020: Measures relative humidity and temperature with passive LG-Ni 1000 sensor, with a signal output of DC 0-10 V. Operates with AC 24 V or DC 13.5–35 V.

• QFA2040: Measures relative humidity and temperature with passive T1 (PTC) sensor, with a signal output of DC 0-10 V. Operates with AC 24 V or DC 13.5–35 V.

• QFA2060: Measures relative humidity and temperature, with a signal output of DC 0-10 V. Operates with AC 24 V or DC 13.5–35 V. Available in various temperature ranges.

• QFA2060D: Measures relative humidity and temperature, with a signal output of 4-20 mA. Operates with DC 13.5–35 V. Available in various temperature ranges.

Trust Siemens to provide you with the tools you need to monitor and optimize your indoor environment. Upgrade to the Siemens Room Humidity Sensor from the QFA2000 Series for complete control over your indoor comfort.

QFA3000 Description:

Achieving the ideal indoor climate has never been easier with the Siemens Room Humidity Sensor from the QFA3000 Series. Designed for high accuracy and quick response times, this sensor provides precise measurements of relative humidity and temperature, ensuring your indoor environment remains comfortable and well-regulated.

Key Features:

• Flexible Power Options: The sensor operates on AC 24 V or DC 13.5–35 V, allowing for easy integration into your existing systems.

• Accurate Signal Outputs: The QFA3000 Series offers both DC 0-10 V and 4-20 mA signal outputs for both relative humidity and temperature, providing real-time data on your indoor conditions.

• Capacitive Humidity Measurement: This advanced technology ensures very high measuring accuracy across the entire measuring range.

• Function Test: The sensor is equipped with a function test feature for added reliability.

• Wide Operating Range: Capable of measuring in extreme conditions, from -40°C to +70°C and 0-100% relative humidity. With an optional LCD display, it operates from -25°C to +70°C.

Applications:

The QFA3000 Series is specifically designed for use in ventilation and air conditioning systems where high accuracy and rapid response times are crucial. Its wide measuring range covers the entire spectrum of humidity from 0% to 100%. Ideal applications include:

• Storage and production facilities in industries such as paper, textiles, pharmaceuticals, food, chemicals, and electronics.

• Laboratories

• Hospitals

• Indoor swimming pools

• Computer and data centers

• Greenhouses

• With the AQF3100 accessory, it can also be used for outdoor applications.

Type Summary:

• QFA3100: Measures relative humidity with a signal output of DC 0-10 V. Operating with AC 24 V or DC 13.5–35 V. No LCD display. Measuring tip: AQF3150.

• QFA3101: Measures relative humidity with a signal output of 4-20 mA. Operating with DC 13.5–35 V. No LCD display. Measuring tip: AQF3150.

• QFA3160: Measures relative humidity and temperature with a signal output of DC 0-10 V. Operating with AC 24 V or DC 13.5–35 V. No LCD display. Measuring tip: AQF3150.

• QFA3160D: Measures relative humidity and temperature with a signal output of DC 0-10 V. Operating with AC 24 V or DC 13.5–35 V. With LCD display. Measuring tip: AQF3150.

• QFA3171: Measures relative humidity and temperature with a signal output of 4-20 mA. Operating with DC 13.5–35 V. No LCD display. Measuring tip: AQF3150.

• QFA3171D: Measures relative humidity and temperature with a signal output of 4-20 mA. Operating with DC 13.5–35 V. With LCD display. Measuring tip: AQF3150.

• QFA3173 and QFA3173D: Variants with an alternative measuring tip (AQF3151) for specific applications.

Trust Siemens to provide you with a sensor that ensures your indoor environment remains comfortable and well-regulated. Upgrade to the Siemens Room Humidity Sensor from the QFA3000 Series and enjoy the benefits of unmatched accuracy.

QFA1000 Description:  (Product Phased-Out)

Experience optimal humidity control with the Siemens Room Hygrostats from the QFA1000 Series. These high-quality hygrostats are designed to monitor and regulate relative humidity levels in ventilation or air conditioning systems, ensuring your indoor environment remains comfortable and healthy.

Key Features:

• Single-Pole Microswitch: Equipped with a reliable single-pole microswitch for precise control.

• Stabilized Humidity Measuring Element: The humidity measuring element is constructed from stabilized plastic texture, ensuring long-lasting accuracy.

• Setpoint Knob: Easily adjust the setpoint knob for the upper switching point to achieve your desired humidity level.

• Versatile Control: Suitable for controlling both humidification and dehumidification equipment, making it adaptable to a wide range of applications.

• Flexible Installation: These hygrostats can be mounted directly on the wall or on a recessed conduit box, providing installation flexibility.

Applications:

The QFA1000 Series hygrostats are essential for maintaining the desired relative humidity levels in various indoor settings. Use them for:

• Controlling and monitoring relative humidity in ventilation or air conditioning systems.

• Regulating room humidity within a selectable range of 30% to 90% relative humidity.

• Controlling humidification or dehumidification equipment to ensure optimal comfort and air quality.

• Monitoring minimum or maximum humidity levels for added peace of mind.

Type Summary:

• QFA1000: Allows setpoint setting range from 30% to 90% relative humidity. Offers a switching differential of approximately 4% r.h. with internal setpoint knob adjustment.

• QFA1001: Similar to the QFA1000 but features external setpoint knob adjustment for added convenience.

Choose the Siemens Room Hygrostats from the QFA1000 Series to take control of your indoor humidity levels and create a comfortable, healthy environment. Trust in Siemens' reputation for quality and precision to ensure the perfect humidity control for your space.