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380	380	= 3. DR-ORP1 Water ORP Sensor =
381	381
382	382
383		-
384	384	== 3.1 Specification ==
385	385
386	386	* **Power Input**: DC7~~30
387		-* **Power Consumption** : < 0.5W
	386	+* **Measuring range**:** **-1999~~1999mV
	387	+**Resolution**: 1mV
388	388	* **Interface**: RS485. 9600 Baud Rate
389	389	* **Measurement error**: ±3mV
390	390	* **Stability**: ≤2mv/24 hours
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452	452	|(% style="width:99px" %)0X01|(% style="width:112px" %)0X03|(% style="width:106px" %)0X00|(% style="width:93px" %)0X20|(% style="width:104px" %)0XF0
453	453
454	454
455		-
456	456	=== 3.6.2 Change address ===
457	457
458	458	For example: Change the address of the sensor with address 1 to 2, master → slave
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523	523	)))
524	524
525	525
526		-
527	527	= 4. DR-DO1 Dissolved Oxygen Sensor =
528	528
529		-== 4.7 RS485 Commands ==
530	530
531	531
	529	+== 4.1 Specification ==
	530	+
	531	+* **Measuring range**: 0.1～1000.0NTU
	532	+* **Accuracy**: ±5%
	533	+* **Resolution**: 0.1NTU
	534	+* **Stability**: ≤3mV/24 hours
	535	+* **Output signal**: A: 4～20 mA (current loop)B: RS485 (standard Modbus-RTU protocol, device default address: 01)
	536	+* **Power supply voltage**: 5～24V DC (when output signal is RS485)12～24V DC (when output signal is 4～20mA)
	537	+* **Working environment**: temperature 0～60℃; humidity ≤95%RH
	538	+* **Power consumption**: ≤0.5W
	539	+
	540	+
	541	+== 4.2 Impedance requirements for current signals ==
	542	+
	543	+[[image:image-20240718195414-8.png||height="100" width="575"]]
	544	+
	545	+
	546	+== 4.3 wiring ==
	547	+
	548	+== 4.4 Mechinical Drawing ==
	549	+
	550	+[[image:image-20240718195058-7.png||height="305" width="593"]]
	551	+
	552	+
	553	+=== 4.5 Instructions for use and maintenance ===
	554	+
	555	+* It can be directly put into water without adding a protective tube, ensuring the long-term stability, reliability and accuracy of the sensor.
	556	+* If the water conditions are complex and you want accurate data, you need to wipe the sensor probe frequently.
	557	+
	558	+
	559	+== 4.6 RS485 Commands ==
	560	+
	561	+4.6.1
	562	+
532	532	The address of the dissolved oxygen sensor is 14
533	533
534	534	The query data command is 14 03 00 14 00 01 C6 CB

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