PH non-charged electrode probe pH value test collecting pH sensor monitoring module PH0-14

Use information:

Link: https://pan.baidu.com/s/1nq1dhlxoaufrj2vkfjrxow

Extract code: 1234

After copying this section, turn on the Baidu web disk mobile phone app, and operate more conveniently

PH value range: 0-14PH

Temperature range: 0-60 ℃
BNC connection is suitable for most pH meters and controllers
Applicable to wide applications: aquarium, hydroponic, laboratory, etc.
The pH electrode has a single cylinder, allowing pH measuring, controller, or input terminals with a BNC input terminal arbitrarily pH device.
The PH electrode probe is accurate and reliable to provide almost instantaneous reading to help you re -check your water again and again
 
What is the difference between the PH probe and it cannot be charged?

The charged pH composite electrode is that there is a plus liquid hole on the electrode shell. When the external effect of the electrode is lost, the adding liquid hole can be opened and the KCL solution can be replenished again.Instead of filling the pH composite electrode, the gel -shaped KCL is not easy to lose and there is no liquid hole.

The characteristic of the rechargeable PH composite electrode is that the reference solution has a high penetration rate.And when the reference electrode is reduced or pollution, the KCL solution can be supplemented or replaced, but the disadvantage is that it is more troublesome.When the charged PH composite electrode is used, the adding liquid hole should be opened to increase the pressure of the liquid and accelerate the electrode response. When the electronically liquid surface is lower than the 2cm of the adding liquid pores, the new electronic solution should be supplemented in time.

The characteristic of non -charged PH composite electrodes is that it is convenient to maintain simple use, so it is also widely used.However, as a laboratory PH electrode use, under long -term and continuous use conditions, the KCL concentration at the liquid connection world will decrease and affect the test accuracy.Therefore, when the non -rechargeable PH composite electrode is not used, it should be soaked in the electrode soaking solution. In this way, the electrode performance will be very good at the next test, and most of the laboratory PH electrodes are not long -term and continuous testing. ThereforeThe impact of accuracy is relatively small.

Product introduction:

Working voltage: 5 ± 0.2V (AC DC)
Work current: 5-10mA
Detectable concentration range: pH0-14
Detection temperature range: 0-80 ℃
Response time: ≤5s
Settlement time: ≤60s
Component power: ≤0.5W
Work temperature: -10 ～ 50 ℃ (nominal temperature 20 ℃)
Humidity: 95 %relative humidity (nominal humidity 65 %relative humidity)
PH test module size: 42 mm*32 mm*20 mm
Output: analog voltage signal output
With 4PC M3 installation holes

The use, maintenance and maintenance of the PH electrode probe:

One: Preparation before use

1. Gently remove the protective bottle from the top of the electrode and put it for later use.
2. Wash the white sedimentary salt outside the electrode with derived water.
3. In order to maintain a proper penetration speed, the liquid surface in the tube must not be performed at the end of the spiral glass tube, and at least 1 inch (2.5cm) of the sample liquid surface.Let the ball bubbles be in full contact with the measured liquid, so that it has an ionic reaction effect.
4. Gently shake the electrode, (just like the thermometer) to remove the bubbles in the electrode.
5. Soak the electrode in the PH electrode storage solution for 1 hour.If there is no electrode storage liquid, 1GKCL can be added to the 200mlph7 buffer as a temporary electrode storage solution.When the electrode is not used, it can be configured with long -term storage liquid to activate the bubble terminal.The preparation method can be added to the 200mlPH4 buffer solution.[3.3kCl is saturated potassium chloride, and the configuration method is called 23 grams of potassium chloride to remove 100ml to remove ion water] Appropriate preservatives

Two: Precautions for the use of electrode probes

1. Use fresh buffer

2. Open the electrode protective cover

3. Measted gaps, rinse the electrode with exfoliating water

4. Stir buffer and sample: A) Stir at the same rate; b) Stir first, then measure

5. When preparing for the pH electrode, the electrode must be drifted with distilled water before and after the measurement.Use an unsatisfactory cloth to suck the excess water on the electrode head to avoid frictional bubbles, otherwise static electricity will be generated to interfere with the accurate measurement of pH.

6. Make sure the buffer is the same as the sample temperature.If the sample temperature is different, use the temperature compensation probe for temperature compensation.

7. Regularly use two points to correct the electrode slope.When the electrode reading or slope is lower than 92%, please refer to the electrode cleaning and cleaning electrode.

Three: Maintenance of electrode probe

1. Cleaning electrode

Universal cleaning solution-Soak the electrode in 0.1m HCL or 0.1m HNO3 solution for 15 minutes, and then soak the electrode in the electrode storage solution for 30 minutes.

2. Blogen of the liquid connection (salt precipitation)

Causes: hard water, mud, organic matter dirt, floating microorganisms in water, moss and so on.Attached to the seepage sandy core around the ball and the tetrafluorosainer, the external electrode cannot work properly.

Solution:: Soak the electrode (60 ° C) for 15-20 minutes in hot water; soak the electrode in the hot saturated KCL (60 ° C) solution for 20-30 minutes, cool to room temperature; put the electrode in the pH 4 buffer solutionSoak for 20 to 30 minutes.

Check if there are too many crystals.

If none, soak the electrode (60 ° C) in hot water for 15-20 minutes; soak the electrode in the hot saturated KCL (60 ℃) solution for 20-30 minutes, cool to room temperature; soak the electrode in the pH 4 buffer solution30 minutes.Soak the electrode head in a thick HCL for 5-10 minutes, rinse the electrode, and check whether the electrolyte flow rate is normal.If the liquid connection world is still blocked, pull the liquid connection (do not touch the glass ball bubbles)

4: The precipitation of inorganic objects on PH sensitive membrane

Cause: Inorganic sample measurement

Solution: Use EDTA, ammonia or acid cleaning

5: PH sensitive membrane dehydration

Cause: Improper storage, long -term use, high temperature operation or strong base solution, to respond slowly and unstable

Solution: Activated electrode

Soak the electrode in 0.1 m HCL for 1 minute, rinse with tap water for 30 seconds, soak the electrode in 0.1 m koh for 1 minute, rinse with tap water for 30 seconds, and test the electrode with a buffer liquid.3 times

6: PH electrodes are used for a long time, and there is no correct cleaning and maintenance work in the measured environment, which leads to factors such as unstable electrode data.Solution, 2-3 months in the electrode, a bubble cleaning work on the electrode, and a check-up work with the liquid connection site.Solution, remove the electrode from the use environment, see if there are dirt on the surface of the bubbles. If you can use a ethanol cotton to wipe it slightly, and then wash it with an ionic water.

[Note that the ball bubbles are easy to break, you should pay attention during the wiping process].Then check the part of the liquid to see if there are pollutants attached to its surface. If so, you can use the deodorization to rinse, or you can shake the electrode back and forth in the measurement cup.EssenceThen wash the electrode and place it in the activation solution for 8 hours, and measure it in the standard solution to restore the measurement status.