Summary

• Page properties (1 modified, 0 added, 0 removed)

Details

Page properties

Content

...	...	@@ -241,27 +241,16 @@
241	241
242	242
243	243	* **Power Input**: DC7~~30
244		-
245	245	* **Power Consumption** : < 0.5W
246		-
247	247	* **Interface**: RS485. 9600 Baud Rate
248		-
249	249	* **pH measurement range**: 0~~14.00pH; resolution: 0.01pH
250		-
251		-* **pH measurement error**: ±0.15pH
252		-
253		-* **Repeatability error**: ±0.02pH
254		-
255		-* **Temperature measurement range**:0~~60°C; resolution: 0.1°C (set temperature for manual temperature compensation, default 25°C)
256		-
257		-* **Temperature measurement error**: ±0.5°C
258		-
	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℃
259	259	* **Temperature Measure Range**: -20 ~~ 60 °C
260		-
261	261	* **Temperature Accuracy: **±0.5 °C
262		-
263	263	* **IP Rated**: IP68
264		-
265	265	* **Max Pressure**: 0.6MPa
266	266
267	267	== 2.2 Wiring ==
...	...	@@ -270,7 +270,7 @@
270	270	[[image:image-20240720172548-2.png||height="348" width="571"]]
271	271
272	272
273		-== 2.3 Mechinical Drawing ==
	262	+== (% style="color:inherit; font-family:inherit" %)2.3 (% style="color:inherit; font-family:inherit; font-size:26px" %)Mechinical Drawing(%%) ==
274	274
275	275
276	276	[[image:image-20240714174241-2.png]]
...	...	@@ -308,24 +308,17 @@
308	308
309	309
310	310	* 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!
311		-
312	312	* 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.
313		-
314	314	* 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.
315		-
316	316	* 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.
317		-
318	318	* 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.
319		-
320	320	* The electrode should be cleaned with deionized water before and after measurement to ensure accuracy.
321		-
322	322	* 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.
323		-
324	324	* 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	+)))
325	325
326		-* 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.
327		-
328		-
329	329	== 2.6 RS485 Commands ==
330	330
331	331
...	...	@@ -411,9 +411,7 @@
411	411
412	412
413	413	This device uses three-point calibration, and three known pH standard solutions need to be prepared.
414		-
415		-(% style="color:blue" %)**The calibration steps are as follows:**
416		-
	396	+**The calibration steps are as follows:**
417	417	(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.
418	418
419	419	(% border="1" cellspacing="3" style="background-color:#f2f2f2; width:518px" %)