Changes for page PS-LB/LS -- LoRaWAN Air Water Pressure Sensor User Manual
Last modified by Xiaoling on 2025/04/19 17:58
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... ... @@ -244,7 +244,6 @@ 244 244 [[image:image-20240109160800-6.png]] 245 245 246 246 247 - 248 248 === 1.10.2 for LS version === 249 249 250 250 ... ... @@ -846,7 +846,28 @@ 846 846 Test the current values at the depth of different liquids and convert them to a linear scale. 847 847 Replace its ratio with the ratio of water to current in the decoder. 848 848 848 +**Example:** 849 849 850 +Measure the corresponding current of the sensor when the liquid depth is 2.04m and 0.51m. 851 + 852 +**Calculate scale factor：** 853 +Use these two data to calculate the current and depth scaling factors：(7.888-5.035)/(2.04-0.51)=1.86470588235294 854 + 855 +**Calculation formula：** 856 + 857 +Use the calibration formula：(Current current - Minimum calibration current)/Scale factor + Minimum actual calibration height 858 + 859 +**Actual calculations：** 860 + 861 +Use this formula to calculate the value corresponding to the current at a depth of 1.5 meters: (6.918-5.035)/1.86470588235294+0.51=1.519810726 862 + 863 +**Error：** 864 + 865 +0.009810726 866 + 867 + 868 +[[image:image-20240329175044-1.png]] 869 + 850 850 = 7. Troubleshooting = 851 851 852 852 == 7.1 Water Depth Always shows 0 in payload ==
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