Professional humidity and temperature measuring with calibrated sensors Sensirion
Sensors SHT10, 11 and 15 are very reliable sensors for a convenient price. Seamingly higher price disappears after we realize, that these sensors are a complete solution, not only stand alone sensors. They are factory calibrated and they have a direct digital output with resolution of 12 bits for relative humidity and 14 bits for temperature.
Thus no precise power supply, low noise linear aplifier, AD converter and
interface are necessary. The fact, that the humidity and temperature are
measured by one device, enables a very precise dew point calculation.
Measurment is activated by sending a measurement command, the sensor executes
measurement and stores the result in its memory, keeping it until readout.
Sensor is able to measure also with a lower resolution - 8 bits for relative
humidity and 12 bits for temperature, significantly reducing measuring time.
Sensirion SHT1x further contains an internal low voltage detection, useful at
battery applications. To an overall reliability contributes also a possibility
of self diagnostics. This function enables an internal heater controlled by a
user (microcontroler), able to increase sensor temperature by 5-10°C. For
further accuracy improvement,
SHT1x datasheet provides detailed information
about a simple temperature compensation of measured relative humidity. It is
possible to equip the senzor with a filter cap
SF1, protecting it from dirt and
droplets. Sensirion also offers evaluation kit EK-H4.
Advantages/ Features:
- measuring of relative humidity and temperature by one component
- individually calibrated in a precision humidity chamber
- excellent reliability and long term stability
- 12 bit resolution for RH and 14 bit for temperature
- measuring range 0-100%RH,-40 to +125 °C
- low voltage detection and self diagnostics function
- average consumption only 90 uW at 1 measuring per sec
- insensitivity to external disturbances (EMC)
- SMT package, reflow solderable
CMOSens® decreases overall costs:
- in the appliacation not used - amplifier, AD converter and interface
- no expensive and time demanding calibration
- low power consumption and very small dimensions of the final solution
- extremelly high reliability thanks to the inner sensor construction as a chip
without solder joints
Contact:
SOS electronic s.r.o.
201107030318.7.2011Test & measurementSOS electronic s.r.o.