How to purchase Siemens duct type temperature and humidity sensor

How to purchase Siemens duct type temperature and humidity sensorThe main characteristics are as follows:

The working voltage is AC24V

Relative humidity digital output DC0... 10V

Temperature digital output DC0... 10V

The measurement accuracy within the measurement range is less than ± 0.8 ° C @ 25 ° C/± 5% r.h

Applicable temperature and humidity range: 0... 50 ° C/10... 90% r.h. (non condensing)

Working voltage: AC24V ± 20%

Frequency: 50 Hz@AC24V

Power consumption: ≤ 1VA

Supply of Xi'an Siemens Duct Temperature and Humidity Sensor QFM Series

Wiring Diagram

G. G0 working voltage AC24V (SELV)

U1 digital output DC 0... 10V, corresponding to relative humidity 0... 100%

U2 digital output DC 0... 10V, corresponding to temperature 0... 50 ° C

Gu signal grounding (internal connection G)

QFM1660 Siemens Sensor Outline Dimensional Drawing

QFM1660 Siemens air duct temperature and humidity sensor
Active sensor for obtaining air temperature and humidity in air ducts
The QFM1660 Siemens sensor is suitable for most HVAC controllers and is typically used in building ventilation and air conditioning equipment.
The main characteristics of QFM1660 Siemens sensor are as follows:
The working voltage is AC24V

How to purchase Siemens duct type temperature and humidity sensorPrecautions for use

Installation location selection:

The sensor probe should avoid steam humidifiers, heat sources, or mechanical vibration sources, with a recommended minimum distance of 3 meters or more.

The cable interface needs to be installed facing downwards to ensure compliance with IP54 protection level and prevent liquid infiltration.

If dew point temperature monitoring is involved, the sensor needs to be installed in the exhaust duct.

Regular maintenance:

Regularly check whether the sensor probe is contaminated or damaged, and clean or replace it in a timely manner.

Perform precision calibration based on the service life (usually 1-2 years) to ensure data accuracy.

Environmental adaptability:

Avoid long-term use in corrosive gases, high dust, or special temperature environments, and use protective kits if necessary.

Signal interference protection:

The analog signal line needs to be laid in layers with the power cable to reduce electromagnetic interference.