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13	13	* **Power Input**: DC7~~30
14		-
15	15	* **Power Consumption** : < 0.5W
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17	17	* **Interface**: RS485. 9600 Baud Rate
18		-
19	19	* **EC Range & Resolution:**
20	20	** **ECK0.01** : 0.02 ~~ 20 μS/cm
21	21	** **ECK0.1**: 0.2 ~~ 200.0 μS/cm
22	22	** **ECK1.0** : 2 ~~ 2,000 μS/cm  Resolution: 1 μS/cm
23	23	** **ECK10.0** : 20 ~~ 20,000 μS/cm  Resolution: 10 μS/cm
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25	25	* **EC Accuracy**: ±1% FS
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27	27	* **Temperature Measure Range**: -20 ~~ 60 °C
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29	29	* **Temperature Accuracy: **±0.5 °C
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31	31	* **IP Rated**: IP68
32		-
33	33	* **Max Pressure**: 0.6MPa
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35		-
36	36	== 1.2 Application for Different Range ==
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38	38
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206	206	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.
207	207
208		-(% style="color:blue" %)**The calibration steps are as follows:**
209		-
	199	+**The calibration steps are as follows:**
210	210	(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.
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253	253	* **Power Input**: DC7~~30
254		-
255	255	* **Power Consumption** : < 0.5W
256		-
257	257	* **Interface**: RS485. 9600 Baud Rate
258		-
259	259	* **pH measurement range**: 0~~14.00pH; resolution: 0.01pH
260		-
261		-* **pH measurement error**: ±0.15pH
262		-
263		-* **Repeatability error**: ±0.02pH
264		-
265		-* **Temperature measurement range**:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
266		-
267		-* **Temperature measurement error**: ±0.5°C
268		-
	247	+* **pH measurement error**:±0.15pH
	248	+* **Repeatability error**:±0.02pH
	249	+* **Temperature measurement range**:0~~60℃; resolution: 0.1℃ (set temperature for manual temperature compensation, default 25℃)
	250	+* **Temperature measurement error**: ±0.5℃
269	269	* **Temperature Measure Range**: -20 ~~ 60 °C
270		-
271	271	* **Temperature Accuracy: **±0.5 °C
272		-
273	273	* **IP Rated**: IP68
274		-
275	275	* **Max Pressure**: 0.6MPa
276	276
277	277	== 2.2 Wiring ==
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280	280	[[image:image-20240720172548-2.png||height="348" width="571"]]
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282	282
283		-== 2.3 Mechinical Drawing ==
	262	+== (% style="color:inherit; font-family:inherit" %)2.3 (% style="color:inherit; font-family:inherit; font-size:26px" %)Mechinical Drawing(%%) ==
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286	286	[[image:image-20240714174241-2.png]]
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320	320	* 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!
321		-
322	322	* 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.
323		-
324	324	* 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.
325		-
326	326	* 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.
327		-
328	328	* 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.
329		-
330	330	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
331		-
332	332	* 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.
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334	334	* 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.
	307	+* (((
	308	+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.
	309	+)))
335	335
336		-* 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.
337		-
338		-
339	339	== 2.6 RS485 Commands ==
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423	423	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
424		-
425		-(% style="color:blue" %)**The calibration steps are as follows:**
426		-
	396	+**The calibration steps are as follows:**
427	427	(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.
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