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37	37	== 1.5 Installation ==
38	38
39	39
40		-**Electrode installation form**
	40	+ Do not power on while connect the cables. Double check the wiring before power on.
41	41
42		-A:Side wall installation
	42	+Installation Photo as reference:
43	43
44		-B:Top flange installation
	44	+**~ Submerged installation:**
45	45
46		-C:Pipeline bend installation
	46	+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.
47	47
48		-D:Pipeline bend installation
	48	+[[image:image-20240715181933-4.png||height="281" width="258"]]
49	49
50		-E:Flow-through installation
	50	+**~ Pipeline installation:**
51	51
52		-F:Submerged installation
	52	+Connect the equipment to the pipeline through the 3/4 thread.
53	53
54		-[[image:image-20240716104537-2.png||height="475" width="706"]]
	54	+[[image:image-20240715182122-6.png||height="291" width="408"]]
55	55
56		-**Several common installation methods of electrodes**
	56	+**Sampling:**
57	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.
	58	+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.
59	59
60		-A. Several common incorrect installation methods
	60	+**Measure the pH of the water sample:**
61	61
62		-[[image:image-20240717103452-1.png||height="320" width="610"]]
	62	+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.
63	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	66
67		-[[image:image-20240716105124-4.png||height="326" width="569"]]
68		-
69		-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.
70		-
71		-B. Correct installation method
72		-
73		-[[image:image-20240716105318-5.png||height="330" width="594"]]
74		-
75		-
76	76	== 1.6 Maintain ==
77	77
78	78
...	...	@@ -112,6 +112,7 @@
112	112	|=(% 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
113	113	|(% style="width:99px" %)0X1|(% style="width:112px" %)0X3|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
114	114
	104	+
115	115	=== 1.7.2 Change address ===
116	116
117	117	For example: Change the address of the sensor with address 1 to 2, master → slave
...	...	@@ -147,9 +147,10 @@
147	147	0XE5
148	148	)))
149	149
	140	+
150	150	=== 1.7.4 Query data ===
151	151
152		-The address of the EC K10 sensor is 11
	143	+The address of the EC K10 sensor is
153	153
154	154	The query data command is 11 03 00 00 00 02 C6 9B
155	155
...	...	@@ -163,7 +163,7 @@
163	163	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
164	164
165	165
166		-=== 1.7.5 Calibration Method ===
	157	+=== 7.1.5 Calibration Method ===
167	167
168	168
169	169	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.
...	...	@@ -214,6 +214,10 @@
214	214	|(% 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
215	215
216	216
	208	+
	209	+
	210	+
	211	+
217	217	= 2. DR-PH01 Water PH Sensor =
218	218
219	219	== 2.7 RS485 Commands ==