Last modified by Xiaoling on 2025/04/19 17:58
<
From version < 74.1 >
edited by Edwin Chen
on 2024/02/23 22:28
To version < 91.1 >
edited by kai
on 2024/05/13 11:52
>
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1 -XWiki.Edwin
1 +XWiki.kai
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146 146  * Operating temperature: 0℃~~50℃
147 147  * Material: 316 stainless steels
148 148  
149 +=== 1.4.3 Wireless Differential Air Pressure Sensor ===
150 +
151 +[[image:image-20240511174954-1.png]]
152 +
153 +* Measuring Range: -100KPa~~0~~100KPa(Optional measuring range).
154 +* Accuracy: 0.5% F.S, resolution is 0.05%.
155 +* Overload: 300% F.S
156 +* Zero temperature drift: ±0.03%F.S/°C
157 +* Operating temperature: -20℃~~60℃
158 +* Storage temperature:  -20℃~~40℃
159 +* Compensation temperature: 0~~50°C
160 +
149 149  == 1.5 Application and Installation ==
150 150  
151 151  === 1.5.1 Thread Installation Type ===
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176 176  [[image:1675071725288-579.png]]
177 177  
178 178  
179 -The Immersion Type pressure sensor is shipped with the probe and device separately. When user got the device, below is the wiring to for connect the probe to the device.
191 +Below is the wiring to for connect the probe to the device.
180 180  
181 181  The Immersion Type Sensor has different variant which defined by Ixx. For example, this means two points:
182 182  
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183 183  * Cable Length: 10 Meters
184 184  * Water Detect Range: 0 ~~ 10 Meters.
185 185  
186 -
187 187  [[image:1675071736646-450.png]]
188 188  
189 189  
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190 190  [[image:1675071776102-240.png]]
191 191  
192 192  
204 +
205 +=== 1.5.3 Wireless Differential Air Pressure Sensor ===
206 +
207 +
208 +(% style="color:blue" %)**Application:**
209 +
210 +Indoor Air Control & Filter clogging Detect.
211 +
212 +[[image:image-20240513100129-6.png]]
213 +
214 +[[image:image-20240513100135-7.png]]
215 +
216 +
217 +Below is the wiring to for connect the probe to the device.
218 +
219 +[[image:image-20240513093957-1.png]]
220 +
221 +
222 +Size of wind pressure transmitter:
223 +
224 +[[image:image-20240513094047-2.png]]
225 +
226 +Note: The above dimensions are measured by hand, and the numerical error of the shell is within ±0.2mm.
227 +
228 +
193 193  == 1.6 Sleep mode and working mode ==
194 194  
195 195  
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245 245  [[image:image-20240109160800-6.png]]
246 246  
247 247  
248 -
249 249  === 1.10.2 for LS version ===
250 250  
251 251  
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766 766  * Example 1: Downlink Payload: 080003  **~-~-->**  AT+PROBE=0003
767 767  * Example 2: Downlink Payload: 080101  **~-~-->**  AT+PROBE=0101
768 768  
769 -=== 3.3.5 Multiple collections are one uplink（Since firmware V1.1） ===
804 +=== 3.3.5 Multiple collections are one uplink (Since firmware V1.1) ===
770 770  
771 771  
772 772  Added AT+STDC command to collect the voltage of VDC_INPUT multiple times and upload it at one time.
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841 841  When downloading the images, choose the required image file for download. ​
842 842  
843 843  
879 +== 6.4 How to measure the depth of other liquids other than water? ==
880 +
881 +
882 +Test the current values at the depth of different liquids and convert them to a linear scale.
883 +Replace its ratio with the ratio of water to current in the decoder.
884 +
885 +**Example:**
886 +
887 +Measure the corresponding current of the sensor when the liquid depth is 2.04m and 0.51m.
888 +
889 +**Calculate scale factor：**
890 +Use these two data to calculate the current and depth scaling factors：(7.888-5.035)/(2.04-0.51)=1.86470588235294
891 +
892 +**Calculation formula：**
893 +
894 +Use the calibration formula：(Current current - Minimum calibration current)/Scale factor + Minimum actual calibration height
895 +
896 +**Actual calculations：**
897 +
898 +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
899 +
900 +**Error：**
901 +
902 +0.009810726
903 +
904 +
905 +[[image:image-20240329175044-1.png]]
906 +
844 844  = 7. Troubleshooting =
845 845  
846 846  == 7.1 Water Depth Always shows 0 in payload ==
image-20240329175044-1.png
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