Wiki source code of Water Quality Sensors
Version 28.2 by Karry Zhuang on 2024/07/18 19:37
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| author | version | line-number | content |
|---|---|---|---|
| 1 | **Table of Contents:** | ||
| 2 | |||
| 3 | {{toc/}} | ||
| 4 | |||
| 5 | |||
| 6 | = 1. DR-ECK Water EC Probe = | ||
| 7 | |||
| 8 | == 1.1 Specification: == | ||
| 9 | |||
| 10 | * **Power Input**: DC7~~30 | ||
| 11 | * **Power Consumption** : < 0.5W | ||
| 12 | * **Interface**: RS485. 9600 Baud Rate | ||
| 13 | * **EC Range & Resolution:** | ||
| 14 | ** **ECK0.01** : 0.02 ~~ 20 μS/cm | ||
| 15 | ** **ECK0.1**: 0.2 ~~ 200.0 μS/cm | ||
| 16 | ** **ECK1.0** : 2 ~~ 2,000 μS/cm Resolution: 1 μS/cm | ||
| 17 | ** **ECK10.0** : 20 ~~ 20,000 μS/cm Resolution: 10 μS/cm | ||
| 18 | * **EC Accuracy**: ±1% FS | ||
| 19 | * **Temperature Measure Range**: -20 ~~ 60 °C | ||
| 20 | * **Temperature Accuracy: **±0.5 °C | ||
| 21 | * **IP Rated**: IP68 | ||
| 22 | * **Max Pressure**: 0.6MPa | ||
| 23 | |||
| 24 | == 1.2 Application for Different Range == | ||
| 25 | |||
| 26 | [[image:image-20240714173018-1.png]] | ||
| 27 | |||
| 28 | |||
| 29 | == 1.3 Wiring == | ||
| 30 | |||
| 31 | |||
| 32 | == 1.4 Mechinical Drawing == | ||
| 33 | |||
| 34 | [[image:image-20240714174241-2.png]] | ||
| 35 | |||
| 36 | |||
| 37 | == 1.5 Installation == | ||
| 38 | |||
| 39 | |||
| 40 | **Electrode installation form** | ||
| 41 | |||
| 42 | A:Side wall installation | ||
| 43 | |||
| 44 | B:Top flange installation | ||
| 45 | |||
| 46 | C:Pipeline bend installation | ||
| 47 | |||
| 48 | D:Pipeline bend installation | ||
| 49 | |||
| 50 | E:Flow-through installation | ||
| 51 | |||
| 52 | F:Submerged installation | ||
| 53 | |||
| 54 | [[image:image-20240718190121-1.png||height="350" width="520"]] | ||
| 55 | |||
| 56 | **Several common installation methods of electrodes** | ||
| 57 | |||
| 58 | When installing the sensor on site, you should strictly follow the correct installation method shown in the following picture. Incorrect installation method will cause data deviation. | ||
| 59 | |||
| 60 | A. Several common incorrect installation methods | ||
| 61 | |||
| 62 | [[image:image-20240718190204-2.png||height="262" width="487"]] | ||
| 63 | |||
| 64 | Error cause: The electrode joint is too long, the extension part is too short, the sensor is easy to form a dead cavity, resulting in measurement error. | ||
| 65 | |||
| 66 | [[image:image-20240718190221-3.png||height="292" width="500"]] | ||
| 67 | |||
| 68 | Error cause: Measurement error or instability may occur due to water flow not being able to fill the pipe or air accumulation at high altitudes. | ||
| 69 | |||
| 70 | B. Correct installation method | ||
| 71 | |||
| 72 | [[image:image-20240718190249-4.png||height="287" width="515"]] | ||
| 73 | |||
| 74 | |||
| 75 | == 1.6 Maintain == | ||
| 76 | |||
| 77 | |||
| 78 | * The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself, and contact us as soon as possible. | ||
| 79 | * If the electrode is not used for a long time, it can generally be stored in a dry place, but it must be placed (stored) in distilled water for several hours before use to activate the electrode. Electrodes that are frequently used can be placed (stored) in distilled water. | ||
| 80 | * Cleaning of conductivity electrodes: Organic stains on the electrode can be cleaned with warm water containing detergent, or with alcohol. Calcium and magnesium precipitates are best cleaned with 10% citric acid. The electrode plate or pole can only be cleaned by chemical methods or by shaking in water. Wiping the electrode plate will damage the coating (platinum black) on the electrode surface. | ||
| 81 | * The equipment should be calibrated before each use. It is recommended to calibrate it every 3 months for long-term use. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). | ||
| 82 | |||
| 83 | == 1.7 RS485 Commands == | ||
| 84 | |||
| 85 | |||
| 86 | RS485 signal (K1 default address 0x12; K10 default address 0x11): | ||
| 87 | Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1 | ||
| 88 | |||
| 89 | |||
| 90 | === 1.7.1 Query address === | ||
| 91 | |||
| 92 | send | ||
| 93 | |||
| 94 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 95 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 96 | |(% style="width:99px" %)0XFE |(% style="width:112px" %)0X03|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X00|(% style="width:1px" %)0X51|(% style="width:1px" %)0XD4 | ||
| 97 | |||
| 98 | If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, which can be used as a method of address query. | ||
| 99 | |||
| 100 | |||
| 101 | response | ||
| 102 | |||
| 103 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %) | ||
| 104 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high | ||
| 105 | |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0 | ||
| 106 | |||
| 107 | === 1.7.2 Change address === | ||
| 108 | |||
| 109 | For example: Change the address of the sensor with address 1 to 2, master → slave | ||
| 110 | |||
| 111 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 112 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 113 | |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A | ||
| 114 | |||
| 115 | If the sensor receives correctly, the data is returned along the original path. | ||
| 116 | Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query. | ||
| 117 | |||
| 118 | |||
| 119 | === 1.7.3 Modify intercept === | ||
| 120 | |||
| 121 | |||
| 122 | send | ||
| 123 | |||
| 124 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 125 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 126 | |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X23|(% style="width:85px" %)0X00|(% style="width:1px" %)0X01|(% style="width:1px" %)0XF8|(% style="width:1px" %)((( | ||
| 127 | 0X07 | ||
| 128 | ))) | ||
| 129 | |||
| 130 | Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command. | ||
| 131 | |||
| 132 | response | ||
| 133 | |||
| 134 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 135 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 136 | |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)((( | ||
| 137 | 0X02 | ||
| 138 | )))|(% style="width:126px" %)0X00|(% style="width:85px" %)0X00|(% style="width:1px" %)0X0A|(% style="width:1px" %)0X38|(% style="width:1px" %)((( | ||
| 139 | 0X8F | ||
| 140 | ))) | ||
| 141 | |||
| 142 | === 1.7.4 Query data === | ||
| 143 | |||
| 144 | The address of the EC K10 sensor is 11 | ||
| 145 | |||
| 146 | The query data command is 11 03 00 00 00 02 C6 9B | ||
| 147 | |||
| 148 | For example, the returned data is 11 03 04 (% style="color:red" %)**02 AE**(%%) 01 64 8B D0. 02 AE is converted to decimal 686, K=10, EC: 6860uS/cm | ||
| 149 | |||
| 150 | |||
| 151 | The address of the EC K1 sensor is 12 | ||
| 152 | |||
| 153 | The query data command is 12 03 00 00 00 02 C6 A8 | ||
| 154 | |||
| 155 | For example, the returned data is 12 03 04 (% style="color:red" %)**02 AE**(%%) 01 64 B8 D0. 02 AE is converted to decimal 686, K=1, EC: 686uS/cm | ||
| 156 | |||
| 157 | |||
| 158 | === 1.7.5 Calibration Method === | ||
| 159 | |||
| 160 | |||
| 161 | This device uses one-point calibration, and you need to prepare a known E standard solution. When mileage K=1, 1~~2000 uses 1413μS/cm standard solution, and when mileage K=10, 10~~20000 uses 12.88mS/cm standard solution. | ||
| 162 | |||
| 163 | The calibration steps are as follows: | ||
| 164 | (1) Place the electrode in distilled water and clean it. When mileage 1~~2000 uses 1413μS/cm standard solution, enter the following calibration command after the data is stable. | ||
| 165 | |||
| 166 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 167 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 139.083px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 168 | |(% style="width:99px" %)0X12|(% style="width:112px" %)0X10|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X04|(% style="width:1px" %)((( | ||
| 169 | 0X00 | ||
| 170 | |||
| 171 | 0X00 | ||
| 172 | |||
| 173 | 0X37 | ||
| 174 | |||
| 175 | 0X32 | ||
| 176 | )))|(% style="width:1px" %)0XBD|(% style="width:1px" %)0XFC | ||
| 177 | |||
| 178 | 1413*10 gives 0X00003732 | ||
| 179 | |||
| 180 | response | ||
| 181 | |||
| 182 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 183 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 184 | |(% style="width:99px" %)0X12|(% style="width:112px" %)0X10|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0XA2|(% style="width:1px" %)0XA0 | ||
| 185 | |||
| 186 | (2) Place the electrode in distilled water to clean it. Use 12.88mS/cm standard solution for the range of 10~~20000. After the data is stable, enter the following calibration command | ||
| 187 | |||
| 188 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 189 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 139.083px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Data|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 190 | |(% style="width:99px" %)0X11|(% style="width:112px" %)0X10|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X04|(% style="width:1px" %)((( | ||
| 191 | 0X00 | ||
| 192 | |||
| 193 | 0X01 | ||
| 194 | |||
| 195 | 0XF7 | ||
| 196 | |||
| 197 | 0X20 | ||
| 198 | )))|(% style="width:1px" %)0X33|(% style="width:1px" %)0X75 | ||
| 199 | |||
| 200 | 12880*10 gives 0X01F720 | ||
| 201 | |||
| 202 | response | ||
| 203 | |||
| 204 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 205 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 206 | |(% style="width:99px" %)0X11|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X26|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0XEB|(% style="width:1px" %)0X50 | ||
| 207 | |||
| 208 | = 2. DR-PH01 Water PH Sensor = | ||
| 209 | |||
| 210 | |||
| 211 | == 2.1 Specification == | ||
| 212 | |||
| 213 | * **Power Input**: DC7~~30 | ||
| 214 | * **Power Consumption** : < 0.5W | ||
| 215 | * **Interface**: RS485. 9600 Baud Rate | ||
| 216 | * **pH measurement range**: 0~~14.00pH; resolution: 0.01pH | ||
| 217 | * **pH measurement error**:±0.15pH | ||
| 218 | * **Repeatability error**:±0.02pH | ||
| 219 | * **Temperature measurement range**:0~~60℃; resolution: 0.1℃ (set temperature for manual temperature compensation, default 25℃) | ||
| 220 | * **Temperature measurement error**: ±0.5℃ | ||
| 221 | * **Temperature Measure Range**: -20 ~~ 60 °C | ||
| 222 | * **Temperature Accuracy: **±0.5 °C | ||
| 223 | * **IP Rated**: IP68 | ||
| 224 | * **Max Pressure**: 0.6MPa | ||
| 225 | |||
| 226 | == 2.2 Wiring == | ||
| 227 | |||
| 228 | |||
| 229 | == (% style="color:inherit; font-family:inherit" %)2.3 (% style="color:inherit; font-family:inherit; font-size:26px" %)Mechinical Drawing(%%) == | ||
| 230 | |||
| 231 | [[image:image-20240714174241-2.png]] | ||
| 232 | |||
| 233 | |||
| 234 | == 2.4 Installation Notice == | ||
| 235 | |||
| 236 | Do not power on while connect the cables. Double check the wiring before power on. | ||
| 237 | |||
| 238 | Installation Photo as reference: | ||
| 239 | |||
| 240 | **~ Submerged installation:** | ||
| 241 | |||
| 242 | The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded. | ||
| 243 | |||
| 244 | [[image:image-20240718191348-6.png]] | ||
| 245 | |||
| 246 | **~ Pipeline installation:** | ||
| 247 | |||
| 248 | Connect the equipment to the pipeline through the 3/4 thread. | ||
| 249 | |||
| 250 | [[image:image-20240718191336-5.png||height="239" width="326"]] | ||
| 251 | |||
| 252 | **Sampling:** | ||
| 253 | |||
| 254 | Take representative water samples according to sampling requirements. If it is inconvenient to take samples, you can also put the electrode into the solution to be tested and read the output data. After a period of time, take out the electrode and clean it. | ||
| 255 | |||
| 256 | **Measure the pH of the water sample:** | ||
| 257 | |||
| 258 | First rinse the electrode with distilled water, then rinse it with the water sample, then immerse the electrode in the sample, carefully shake the test cup or stir it to accelerate the electrode balance, let it stand, and record the pH value when the reading is stable. | ||
| 259 | |||
| 260 | |||
| 261 | === 2.5 Maintenance === | ||
| 262 | |||
| 263 | |||
| 264 | * The equipment itself generally does not require daily maintenance. When an obvious fault occurs, please do not open it and repair it yourself. Contact us as soon as possible! | ||
| 265 | * There is an appropriate amount of soaking solution in the protective bottle at the front end of the electrode. The electrode head is soaked in it to keep the glass bulb and the liquid junction activated. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use. | ||
| 266 | * Preparation of electrode soaking solution: Take a packet of PH4.00 buffer, dissolve it in 250 ml of pure water, and soak it in 3M potassium chloride solution. The preparation is as follows: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water. | ||
| 267 | * The glass bulb at the front end of the electrode cannot come into contact with hard objects. Any damage and scratches will make the electrode ineffective. | ||
| 268 | * Before measurement, the bubbles in the electrode glass bulb should be shaken off, otherwise it will affect the measurement. When measuring, the electrode should be stirred in the measured solution and then placed still to accelerate the response. | ||
| 269 | * The electrode should be cleaned with deionized water before and after measurement to ensure accuracy. | ||
| 270 | * After long-term use, the pH electrode will become passivated, which is characterized by a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the bulb at the bottom of the electrode can be soaked in 0.1M dilute hydrochloric acid for 24 hours (0.1M dilute hydrochloric acid preparation: 9 ml of hydrochloric acid is diluted to 1000 ml with distilled water), and then soaked in 3.3M potassium chloride solution for 24 hours. If the pH electrode is seriously passivated and soaking in 0.1M hydrochloric acid has no effect, the pH electrode bulb can be soaked in 4% HF (hydrofluoric acid) for 3-5 seconds, washed with pure water, and then soaked in 3.3M potassium chloride solution for 24 hours to restore its performance. | ||
| 271 | * Glass bulb contamination or liquid junction blockage can also cause electrode passivation. At this time, it should be cleaned with an appropriate solution according to the nature of the contaminant. | ||
| 272 | * ((( | ||
| 273 | The equipment should be calibrated before each use. For long-term use, it is recommended to calibrate once every 3 months. The calibration frequency should be adjusted appropriately according to different application conditions (degree of dirt in the application, deposition of chemical substances, etc.). After aging, the electrodes should be replaced in time. | ||
| 274 | ))) | ||
| 275 | |||
| 276 | == 2.6 RS485 Commands == | ||
| 277 | |||
| 278 | RS485 signaldefault address 0x10 | ||
| 279 | Standard Modbus-RTU protocol, baud rate: 9600; check bit: none; data bit: 8; stop bit: 1 | ||
| 280 | |||
| 281 | === 2.6.1 Query data === | ||
| 282 | |||
| 283 | send | ||
| 284 | |||
| 285 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 286 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 287 | |(% style="width:99px" %)0XFE |(% style="width:112px" %)0X03|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X00|(% style="width:1px" %)0X51|(% style="width:1px" %)0XD4 | ||
| 288 | |||
| 289 | response | ||
| 290 | |||
| 291 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %) | ||
| 292 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)New address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 106px; background-color: rgb(79, 129, 189); color: white;" %)Data length|=(% style="width: 93px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 104px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high | ||
| 293 | |(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0 | ||
| 294 | |||
| 295 | === 2.6.2 Change address === | ||
| 296 | |||
| 297 | For example: Change the address of the sensor with address 1 to 2, master → slave | ||
| 298 | |||
| 299 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 300 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 301 | |(% style="width:99px" %)0X01|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X50|(% style="width:85px" %)0X00|(% style="width:1px" %)0X02|(% style="width:1px" %)0X08|(% style="width:1px" %)0X1A | ||
| 302 | |||
| 303 | If the sensor receives correctly, the data is returned along the original path. | ||
| 304 | Note: If you forget the original address of the sensor, you can use the broadcast address 0XFE instead. When using 0XFE, the host can only connect to one slave, and the return address is still the original address, which can be used as a method of address query. | ||
| 305 | |||
| 306 | |||
| 307 | === 2.6.3 Modify intercept === | ||
| 308 | |||
| 309 | |||
| 310 | send | ||
| 311 | |||
| 312 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 313 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 314 | |(% style="width:99px" %)0X10|(% style="width:112px" %)0X06|(% style="width:135px" %)0X00|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)((( | ||
| 315 | 0XA5 | ||
| 316 | ))) | ||
| 317 | |||
| 318 | Change the intercept of the sensor with address 1 to 10 (default 0), which is 0X000A in the command. | ||
| 319 | |||
| 320 | response | ||
| 321 | |||
| 322 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:676.25px" %) | ||
| 323 | |=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Function code|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address high|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Address low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Quantity high|=(% style="width: 1px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 low|=(% style="width: 50px;background-color:#4F81BD;color:white" %)CRC16 high | ||
| 324 | |(% style="width:99px" %)0X10|(% style="width:112px" %)0X06|(% style="width:135px" %)((( | ||
| 325 | 0X00 | ||
| 326 | )))|(% style="width:126px" %)0X10|(% style="width:85px" %)0X00|(% style="width:1px" %)0X64|(% style="width:1px" %)0X8A|(% style="width:1px" %)((( | ||
| 327 | 0XA5 | ||
| 328 | ))) | ||
| 329 | |||
| 330 | === 2.6.4 Query data === | ||
| 331 | |||
| 332 | |||
| 333 | The address of the pH sensor is 10 | ||
| 334 | |||
| 335 | The query data command is 10 03 00 00 00 01 87 4B. After the query, 7 bytes will be returned. | ||
| 336 | |||
| 337 | For example, the returned data is 10 03 02 (% style="color:red" %)**02 AE**(%%) C4 9B. | ||
| 338 | |||
| 339 | 02 AE is the pH value, which is converted into decimal to get 686, and then two decimal places are added to get the actual value. 02 AE means the current pH value is 6.86. | ||
| 340 | |||
| 341 | |||
| 342 | === 2.6.5 Calibration Method === | ||
| 343 | |||
| 344 | |||
| 345 | This device uses three-point calibration, and three known pH standard solutions need to be prepared. | ||
| 346 | The calibration steps are as follows: | ||
| 347 | (1) Place the electrode in distilled water to clean it, and then place it in 9.18 standard buffer solution. After the data stabilizes, enter the following calibration command, and the 9.18 calibration is completed. | ||
| 348 | |||
| 349 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %) | ||
| 350 | |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high | ||
| 351 | |(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)((( | ||
| 352 | 0X00 | ||
| 353 | )))|(% style="width:68px" %)0X20|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X8A|(% style="width:55px" %)((( | ||
| 354 | 0XF1 | ||
| 355 | ))) | ||
| 356 | |||
| 357 | (2) Wash the electrode in distilled water and place it in 6.86 standard buffer. After the data stabilizes, enter the following calibration command. The 6.86 calibration is completed. | ||
| 358 | |||
| 359 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %) | ||
| 360 | |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high | ||
| 361 | |(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)((( | ||
| 362 | 0X00 | ||
| 363 | )))|(% style="width:68px" %)0X21|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0XDB|(% style="width:55px" %)((( | ||
| 364 | 0X31 | ||
| 365 | ))) | ||
| 366 | |||
| 367 | (3) Wash the electrode in distilled water and place it in 4.01 standard buffer. After the data stabilizes, enter the following calibration command, and the 4.00 calibration is completed. | ||
| 368 | |||
| 369 | (% border="1" cellspacing="3" style="background-color:#f2f2f2; width:575.333px" %) | ||
| 370 | |=(% style="width: 64px; background-color: rgb(79, 129, 189); color: white;" %)Address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 66px; background-color: rgb(79, 129, 189); color: white;" %)Address high|=(% style="width: 68px; background-color: rgb(79, 129, 189); color: white;" %)Address low|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 55px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high | ||
| 371 | |(% style="width:64px" %)0X10|(% style="width:72px" %)0X06|(% style="width:66px" %)((( | ||
| 372 | 0X00 | ||
| 373 | )))|(% style="width:68px" %)0X22|(% style="width:72px" %)0XFF|(% style="width:70px" %)0XFF|(% style="width:55px" %)0X2B|(% style="width:55px" %)((( | ||
| 374 | 0X31 | ||
| 375 | ))) | ||
| 376 | |||
| 377 | After the above three steps are completed, the calibration is successful. The advantage of three-point calibration compared to two-point calibration is that the electrode is calibrated separately in the acid and alkali parts, thereby achieving accurate calibration of the full range and making the measurement data more accurate. | ||
| 378 | |||
| 379 | |||
| 380 | = 3. DR-ORP1 Water ORP Sensor = | ||
| 381 | |||
| 382 | |||
| 383 | |||
| 384 | == 3.1 Specification == | ||
| 385 | |||
| 386 | * **Power Input**: DC7~~30 | ||
| 387 | * **Power Consumption** : < 0.5W | ||
| 388 | * **Interface**: RS485. 9600 Baud Rate | ||
| 389 | * **Measurement error**: ±3mV | ||
| 390 | * **Stability**: ≤2mv/24 hours | ||
| 391 | * **Equipment working conditions**: Ambient temperature: 0-60℃ Relative humidity: <85%RH | ||
| 392 | * **IP Rated**: IP68 | ||
| 393 | * **Max Pressure**: 0.6MPa | ||
| 394 | |||
| 395 | == 3.2 Wiring == | ||
| 396 | |||
| 397 | |||
| 398 | == 3.3 Mechinical Drawing == | ||
| 399 | |||
| 400 | [[image:image-20240714174241-2.png]] | ||
| 401 | |||
| 402 | == 3.4 Installation Notice == | ||
| 403 | |||
| 404 | Do not power on while connect the cables. Double check the wiring before power on. | ||
| 405 | |||
| 406 | Installation Photo as reference: | ||
| 407 | |||
| 408 | **~ Submerged installation:** | ||
| 409 | |||
| 410 | The lead wire of the equipment passes through the waterproof pipe, and the 3/4 thread on the top of the equipment is connected to the 3/4 thread of the waterproof pipe with raw tape. Ensure that the top of the equipment and the equipment wire are not flooded. | ||
| 411 | |||
| 412 | [[image:image-20240718191348-6.png]] | ||
| 413 | |||
| 414 | **~ Pipeline installation:** | ||
| 415 | |||
| 416 | Connect the equipment to the pipeline through the 3/4 thread. | ||
| 417 | |||
| 418 | [[image:image-20240718191336-5.png||height="239" width="326"]] | ||
| 419 | |||
| 420 | |||
| 421 | == 3.7 RS485 Commands == | ||
| 422 | |||
| 423 | |||
| 424 | The address of the ORP sensor is 13 | ||
| 425 | |||
| 426 | The query data command is 13 03 00 00 00 01 87 78 | ||
| 427 | |||
| 428 | For example, the returned data is 13 03 02 (% style="color:red" %)**02 AE**(%%) 80 9B. | ||
| 429 | |||
| 430 | 02 AE is the ORP value, converted to decimal, the actual value is 686, 02 AE means the current ORP value is 686mV | ||
| 431 | |||
| 432 | |||
| 433 | = 4. DR-DO1 Dissolved Oxygen Sensor = | ||
| 434 | |||
| 435 | == 4.7 RS485 Commands == | ||
| 436 | |||
| 437 | |||
| 438 | The address of the dissolved oxygen sensor is 14 | ||
| 439 | |||
| 440 | The query data command is 14 03 00 14 00 01 C6 CB | ||
| 441 | |||
| 442 | After the query, 7 bytes will be returned. For example, the returned data is 14 03 02 (% style="color:red" %)**03 78**(%%) B5 55. 03 78 is the value of dissolved oxygen. | ||
| 443 | |||
| 444 | Converted to decimal, it is 888. Add two decimal places to get the actual value. 03 78 means the current dissolved oxygen is 8.88mg/L | ||
| 445 | |||
| 446 | |||
| 447 | = 5. DR-TS1 Water Turbidity Sensor = | ||
| 448 | |||
| 449 | == 5.7 RS485 Commands == | ||
| 450 | |||
| 451 | |||
| 452 | The address of the dissolved oxygen sensor is 15 | ||
| 453 | |||
| 454 | The query data command is 15 03 00 00 00 01 87 1E | ||
| 455 | |||
| 456 | For example, the returned data is 15 03 02 (% style="color:red" %)**02 9A**(%%) 09 4C | ||
| 457 | |||
| 458 | 02 9A is the turbidity value, converted to decimal, it is 666, and then divided by 10, the actual value is 66.6, 02 9A means the current turbidity value is 66.6 NTU |