Introduction:
The high-precision barometer adopts a high-precision imported resonant pressure sensor to measure atmospheric pressure with high precision and resolution. It uses an 8-inch capacitive touch screen and WINDOW system, with strong expandability, and can stack various functions according to different requirements. The high-precision barometer can display atmospheric pressure, correct sea level pressure, temperature, humidity and other information.
Technical parameters:
Measurement range: 400hPa to 1100hPa
Accuracy level: 0.02 level (± 0.2hPa)
Resolution: 0.01pa (0.0001hpa)
Temperature: -20-65 ° C
Humidity: 0-100%
Working temperature: -10 ℃ to 40 ℃
Storage temperature: -30 ℃~50 ℃
Power supply: AC220V ± 22V, 2A
External air source interface: 8mm
USB interface: Two (connect to USB flash drive to export data, connect to mouse)
Page Introduction:


QNH: To correct sea level pressure, QFE is field pressure, which is measured pressure


In the formula, QNH is the corrected sea pressure, measured in hectopascals (hPa); QFE stands for field pressure, measured in hectopascals (hPa); Z is the airport elevation, measured in meters (m).
Current temperature: Display the current temperature value with an error of<1 ° C
Humidity: Display the current humidity value with an error of less than 0.5%
The atmospheric pressure is displayed as the current pressure value
Curve display: Display the atmospheric pressure fluctuation curve
Curve setting: Generate the Y-axis coordinate of the curve, corresponding to different display ranges (after setting the curve parameters, click "Curve Setting" to activate the Y-axis coordinate)
Unit: Switch between different units, default is KPA PA hpa mbr inhg mmHg
Data: Display stored data, collected and stored once every 0.5S by default
Settings: Calibrate sensors and set airport altitude
Curve saving: Save the current curve in the "Image: Folder" on the desktop
Data storage and export:
Click on "Data" to view the data stage and no longer update atmospheric pressure data


Click on "Query Data List"



The data directory takes "days" as the total directory and "hours" as the specific data file, as shown in the above figure: there is data on August 13th at 12:00 and 13:00. Click on the data file, and the table below will display the current data, as shown in the following figure:

Click on "Download List"



Prompt for successful download, now stored as an Excel file in the 'Download' folder on the computer desktop.
Setting and Calibration:


The high-precision barometer provides two calibration methods: linear calibration and secondary calibration
Linear calibration is suitable for linear error and fixed difference calibration. According to the following formula, it can calibrate air pressure, temperature, and altitude
True value=displayed value * coefficient+correction value
Atmospheric pressure can be calibrated at level 2, and the calibration method is as follows. Enter the calibration password in the calibration password box and click "Level 2 Calibration"

At this point, the 10 point linearization calibration page is displayed. Use a high-precision pressure controller (with an accuracy of not less than one ten thousandth) to generate the following pressure. When the pressure stabilizes, click on the corresponding pressure value (to calibrate in order, not jump, password: 2322)
Warning: Without a benchmark, clicking on calibration may result in loss of calibration data.