HTU21P – analog humidity/temperature sensor
Item number: HTU21P - HTU21P(F) Applications Vehicles & Road TrafficHeating/ Air conditioning/ Ventilation
Price on request
Delivery time:Delivery time on request
The HTU21P OEM sensor is a combination of capacitive humidity sensing element and temperature sensor. Each sensor is individually calibrated, compensated for and tested.
The basic frequency is a 120-Hz PWM signal which enables an analog DC output signal to be generated through a suitable lowpass filter.
The sensor has a wide measurement range for relative humidity of between 0 and 100% RH. The accuracy varies from ±2% between 20 and 80% RH (@ 25°C) to up to 5% in the extended range. Temperature is detected with an accuracy of ±0.3°C (@ 25°C) within a spectrum of -40 to +125°C. The resolution for relative humidity and for temperature is 10 and 12 bits respectively.
Following full saturation the HTU21P is again operational after approximately 10 seconds. The sensor is supplied in a (reflow) solderable 3 x 3 x 0.9 mm³ DFN chip package (dual-flat no-lead), making it suitable for sensor systems with a small footprint.
Variants of the HTU21P
The HTU21P is also available as the optional HTU21P(F) with a PTFE filter membrane to protect it from dust, liquid and contamination.
Features
The basic frequency is a 120-Hz PWM signal which enables an analog DC output signal to be generated through a suitable lowpass filter.
The sensor has a wide measurement range for relative humidity of between 0 and 100% RH. The accuracy varies from ±2% between 20 and 80% RH (@ 25°C) to up to 5% in the extended range. Temperature is detected with an accuracy of ±0.3°C (@ 25°C) within a spectrum of -40 to +125°C. The resolution for relative humidity and for temperature is 10 and 12 bits respectively.
Following full saturation the HTU21P is again operational after approximately 10 seconds. The sensor is supplied in a (reflow) solderable 3 x 3 x 0.9 mm³ DFN chip package (dual-flat no-lead), making it suitable for sensor systems with a small footprint.
Variants of the HTU21P
The HTU21P is also available as the optional HTU21P(F) with a PTFE filter membrane to protect it from dust, liquid and contamination.
Features
- Humidity range of 0 to 100% RH
- Temperature range of -40 to +125°C
- Analog PWM output signal
- Accuracy of ±2% RH
- Supply voltage of 1.5 to 3.6 V
- Short signal times
- Fast recovery time after long saturation periods
- Small DFN package
- RoHS and REACH compliant
Attributes of HTU21P – analog humidity/temperature sensor
May differ from supplier data
Basic data
Accuracy (%) 2 %
Humidity measurement range 0 to 100 % r.F.
Additional measurement possibilities Temperature
Measurement principle Capacitive
Humidity measurement type Relative humidity
Sensor type OEM humidity sensor
Measured medium Air/gases, non-aggressive Air, no pressure, non-aggressive
Product environmental influences (protection class/temperature)
Operating temperature range 0 to 50 °C
Typical applications
Typical applications Printing systems Heating/ventilation/air conditioning (HVAC) Air conditioning Show all Industrial measuring and control technology Home automation HVAC and cooling systems Automotive industry Air and drying plants
More functions and options
Additional functions/options PTFE filter