All - in - One Handheld Weather Meter for Mobile Weather Observation

In the field of meteorological observation, the Handheld Weather meter is an extremely practical tool. This kind of instrument is compact in size and easy to carry, enabling users to obtain important meteorological information anytime and anywhere.

It can measure a variety of meteorological elements. The most common one is temperature measurement. Through the built - in temperature sensor, it can quickly and accurately sense the temperature value of the surrounding environment. Its working principle is based on thermistors or thermocouples, etc. Different substances change their resistance values or electromotive forces with temperature changes, and the instrument converts these changes into temperature data that we can read.

Humidity is also one of the items that it can measure accurately. Humidity sensors work by using the changes in the electrical properties of hygroscopic materials in different humidity environments. For example, in a capacitive humidity sensor, when the humidity changes, the dielectric constant of the hygroscopic material changes, thereby changing the capacitance value. The instrument calculates the relative humidity value by detecting the capacitance change.

Wind speed measurement is also crucial. Handheld weather meters usually use cup - anemometer or ultrasonic wind speed sensors. The cup - anemometer wind speed sensor relies on the rotation speed of the wind cups under the action of wind. Through methods such as gear transmission, it drives a counter to calculate the wind speed. The ultrasonic type uses the characteristic that the propagation speed of ultrasonic waves in the air is different when the wind is blowing in the same direction and against the wind. It calculates the wind speed by measuring the propagation time difference.

It may also have the function of barometric pressure measurement. Barometric pressure sensors are generally based on the piezoresistive effect. When the barometric pressure changes, the resistance value of the sensitive element inside the sensor changes, causing a voltage change. After being processed by the circuit, the current barometric pressure value is displayed.

It is mainly used for temporary or emergency meteorological monitoring. For example, in outdoor activities such as mountain climbing, hiking, and camping, it can help people understand weather changes in advance, plan their trips reasonably, and ensure safety.