The Imet-4 radiosonde uses a bead type thermistor to measure air temperature. Small size can reduce the impact of long and short wave radiation and ensure fast response time. The Imet-4 radiosonde humidity sensor is a thin film capacitive polymer that can directly respond to relative humidity. The sensor also integrates a temperature sensor to reduce errors caused by solar heating.

temperature and humidity

IMet-4 uses a bead thermistor to measure air temperature. Small size can reduce the impact of long and short wave radiation and ensure fast response time. A humidity sensor is a thin film capacitive polymer that can directly respond to relative humidity. The sensor also integrates a temperature sensor to reduce errors caused by solar heating.

Air pressure and altitude

according toGRUAN3's suggestion is that iMet-4 is equipped with a pressure sensor to calculate the height of the sensor in the lower atmosphere. Once the radiosonde reaches a better altitude, it will use GPS altitude and temperature and humidity data to derive pressure.

becauseGPS cannot observe pressure on the ground, while pressure sensors can observe air pressure on the ground. When using instruments on site, the air pressure measured by GPS during movement can be calibrated to produce more accurate measurement results.

wind

The receiver passes throughCalculate wind speed and direction using GPS sounding data.

Wireless sounding instrument data transmission

The effective transmission distance of iMet-4 radiosonde is 250km. The FM transmission with a peak frequency of 6 kHz has extremely high transmission efficiency. Seven wireless frequencies are pre fabricated in the instrument, and the sounding instrument can be custom programmed, so there are more channels to choose from and use.

calibration

The temperature and humidity sensors of Met-4 use NIST traceable calibration to ensure better data generation.

Product advantages

lExcellent parallel transmission performance

lCompact design, extremely lightweight

lNo need for components for on-site calibration of instruments

laccord withGRUAN3 standard

ladoptLED marking transmission frequency selection 3D GPS solution

lSimple one click user interface