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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... ... @@ -146,6 +146,20 @@ 146 146 * Operating temperature: 0℃~~50℃ 147 147 * Material: 316 stainless steels 148 148 149 + 150 +=== 1.4.3 Wireless Differential Air Pressure Sensor === 151 + 152 +[[image:image-20240511174954-1.png]] 153 + 154 +* Measuring Range: -100KPa~~0~~100KPa,Intermediate range is optional. 155 +* Accuracy: 0.5% F.S, resolution is 0.05%. 156 +* Overload: 300% F.S 157 +* Zero temperature drift: ±0.03%F.S/°C 158 +* Operating temperature: -40℃~~85℃ 159 +* Compensation temperature: 0~~50°C 160 + 161 + 162 + 149 149 == 1.5 Application and Installation == 150 150 151 151 === 1.5.1 Thread Installation Type === ... ... @@ -845,7 +845,28 @@ 845 845 Test the current values at the depth of different liquids and convert them to a linear scale. 846 846 Replace its ratio with the ratio of water to current in the decoder. 847 847 862 +**Example:** 848 848 864 +Measure the corresponding current of the sensor when the liquid depth is 2.04m and 0.51m. 865 + 866 +**Calculate scale factor：** 867 +Use these two data to calculate the current and depth scaling factors：(7.888-5.035)/(2.04-0.51)=1.86470588235294 868 + 869 +**Calculation formula：** 870 + 871 +Use the calibration formula：(Current current - Minimum calibration current)/Scale factor + Minimum actual calibration height 872 + 873 +**Actual calculations：** 874 + 875 +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 876 + 877 +**Error：** 878 + 879 +0.009810726 880 + 881 + 882 +[[image:image-20240329175044-1.png]] 883 + 849 849 = 7. Troubleshooting = 850 850 851 851 == 7.1 Water Depth Always shows 0 in payload ==
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