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418	418	[[image:image-20240718191336-5.png||height="239" width="326"]]
419	419
420	420
421		-=== 6.3.5 Maintenance ===
	421	+=== 3.5 Maintenance ===
422	422
423	423
424	424	(1) 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.
	425	+
425	425	(2) In general, ORP electrodes do not need to be calibrated and can be used directly. When there is doubt about the quality and test results of the ORP electrode, the electrode potential can be checked with an ORP standard solution to determine whether the ORP electrode meets the measurement requirements, and the electrode can be recalibrated or replaced with a new ORP electrode. The frequency of calibration or inspection of the measuring electrode depends on different application conditions (the degree of dirt in the application, the deposition of chemical substances, etc.).
	427	+
426	426	(3) There is an appropriate soaking solution in the protective bottle at the front end of the electrode, and the electrode head is soaked in it to ensure the activation of the platinum sheet and the liquid junction. When measuring, loosen the bottle cap, pull out the electrode, and rinse it with pure water before use.
	429	+
427	427	(4) Preparation of electrode soaking solution: Take 25 grams of analytical pure potassium chloride and dissolve it in 100 ml of pure water to prepare a 3.3M potassium chloride solution.
	431	+
428	428	(5) Before measuring, 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.
	433	+
429	429	(6) The electrode should be cleaned with deionized water before and after the measurement to ensure the measurement accuracy.
	435	+
430	430	(7) After long-term use, the ORP electrode will be passivated, which is manifested as a decrease in sensitivity gradient, slow response, and inaccurate readings. At this time, the platinum sheet 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 to restore its performance.
	437	+
431	431	(8) Electrode 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. If the platinum of the electrode is severely contaminated and an oxide film is formed, toothpaste can be applied to the platinum surface and then gently scrubbed to restore the platinum's luster.
	439	+
432	432	(9) The equipment should be calibrated before each use. It is recommended to calibrate once 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.). After aging, the electrodes should be replaced in time.
433	433
434	434	== 3.6 RS485 Commands ==
...	...	@@ -554,8 +554,27 @@
554	554
555	555	== 4.6 RS485 Commands ==
556	556
557		-4.6.1
	565	+=== 4.6.1 Query address ===
558	558
	567	+send
	568	+
	569	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	570	+|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	571	+|(% style="width:99px" %)0XFE |(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X50|(% style="width:70px" %)0X00|(% style="width:72px" %)0X00|(% style="width:56px" %)0X51|(% style="width:56px" %)0XD4
	572	+
	573	+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.
	574	+
	575	+
	576	+response
	577	+
	578	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	579	+|=(% 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
	580	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	581	+
	582	+
	583	+=== 4.6.2 Query data ===
	584	+
	585	+
559	559	The address of the dissolved oxygen sensor is 14
560	560
561	561	The query data command is 14 03 00 14 00 01 C6 CB
...	...	@@ -567,9 +567,61 @@
567	567
568	568	= 5. DR-TS1 Water Turbidity Sensor =
569	569
570		-== 5.7 RS485 Commands ==
571	571
572	572
	599	+== (% id="cke_bm_81470S" style="display:none" %) (%%)5.1 Specification ==
	600	+
	601	+* **Measuring range**: 0.1～1000.0NTU
	602	+* **Accuracy**: ±5%
	603	+* **Resolution**: 0.1NTU
	604	+* **Stability**: ≤3mV/24 hours
	605	+* **Output signal**: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	606	+* **Power supply voltage**: 5～24V DC (when output signal is RS485)12～24V DC (when output signal is 4～20mA)
	607	+* **Working environment**: temperature 0～60℃; humidity ≤95%RH
	608	+* **Power consumption**: ≤0.5W
	609	+
	610	+
	611	+== 5.2 wiring ==
	612	+
	613	+
	614	+== 5.3 Impedance requirements for current signals ==
	615	+
	616	+[[image:image-20240718195414-8.png||height="100" width="575"]]
	617	+
	618	+
	619	+== 5.4 Mechinical Drawing ==
	620	+
	621	+[[image:image-20240718195058-7.png||height="305" width="593"]]
	622	+
	623	+
	624	+=== 5.5 Instructions for use and maintenance ===
	625	+
	626	+* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	627	+* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	628	+
	629	+== 5.6 RS485 Commands ==
	630	+
	631	+=== 4.6.1 Query address ===
	632	+
	633	+send
	634	+
	635	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:599.333px" %)
	636	+|=(% style="width: 50px;background-color:#4F81BD;color:white" %)Original address|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Function code|=(% style="width: 64px; 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: 70px; background-color: rgb(79, 129, 189); color: white;" %)Quantity high|=(% style="width: 72px; background-color: rgb(79, 129, 189); color: white;" %)Quantity low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 low|=(% style="width: 56px; background-color: rgb(79, 129, 189); color: white;" %)CRC16 high
	637	+|(% style="width:99px" %)0XFE |(% style="width:72px" %)0X03|(% style="width:64px" %)0X00|(% style="width:68px" %)0X50|(% style="width:70px" %)0X00|(% style="width:72px" %)0X00|(% style="width:56px" %)0X51|(% style="width:56px" %)0XD4
	638	+
	639	+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.
	640	+
	641	+
	642	+response
	643	+
	644	+(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:561.333px" %)
	645	+|=(% 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
	646	+|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
	647	+
	648	+
	649	+=== 5.6.2 Query data ===
	650	+
	651	+
573	573	The address of the dissolved oxygen sensor is 15
574	574
575	575	The query data command is 15 03 00 00 00 01 87 1E