What factors should be paid attention to when using coal sulfur meter?

HS-500 high-frequency infrared sulfur analyzer (coal sulfur meter, or high-frequency infrared sulfur meter) is an intelligent infrared analysis instrument with pyroelectric sensor as the core, composed of high-frequency induction combustion furnace and microcomputer control system. The analysis software is based on the Windows XP operating platform, with standard Windows Chinese operation interface and humanized human-computer interaction functions. It is mainly used for the rapid determination of sulfur content in coal, coke, ore and other materials.

Main technical performance.

Humanized design, structure and control board are all produced by modern processing technology, and the products are meticulous and precise, beautiful and generous.

It is the first linearized calibration software in China that adopts multivariate nonlinear fitting technology, single-point fitting and multi-point fitting correction.

The high-performance lithium tantalate pyroelectric infrared sensor is used to improve the detection sensitivity of the system.

Constant pressure and constant flow of the air circuit system, and stability of analysis data.

It adopts 3 5kw, air-cooled ceramic power tube, and the heating power is stable and reliable.

The power of the high-frequency furnace is adjustable, which is suitable for the analysis of samples of different materials.

The automatic burner cleaning unit reduces the influence of dust on the analysis results.

The furnace heating device makes the conversion rate of sulfur tend to be consistent, and improves the stability of sulfur determination.

All-round database search, remote network query of analysis results.

Main technical parameters:

1. Analysis scope: Extensible.

2. Sensitivity (minimum reading):

5. Electronic balance: 0 100g

Weighing accuracy:

Scope of application:

HY-B6 fast intelligent sulfur analyzer is mainly used to test the total sulfur content in coal, coking coal, petroleum and other combustibles, the instrument has a wide measurement range, high precision, high, medium and low grades, and can accept special orders from users. It is widely used in steel, metallurgy, casting, machinery, chemical industry, mining and other industries, as well as quality supervision departments and colleges and universities.

Performance characteristics: windows98 and above system, human-computer interaction, that is, learning will adopt integrated design, large-size LCD Chinese display, intuitive and fast, automatic control of the whole test process, accurate analysis, automatic printing report. It can be controlled by microcomputer, can be used offline, and supports hot-swappable computer connection. Imported chips, original German sample motors.

Technical parameters: sulfur measurement range: 0-80

Sulfur measurement accuracy: in line with the requirements of the national standard GB T214-2006 working power supply: AC220V 15% 50Hz

Since its establishment in 2005, Zhengzhou Hengya Instrumentation has been dedicated to the production of calorimeter series, sulfur tester series, moisture tester series, hydrogen tester, colloidal layer tester, ash melting point tester, temperature controller series, muffle furnace, adhesion index tester, coal ignition point tester, sample preparation laboratory analysis equipment. In the process of development and production, the company provides users with high-quality and low-cost instruments and equipment with standardized design, strict management, fine manufacturing, newer, higher and better standards, and the company's products provide high-quality services throughout their lives.

Cause of failure:

1: The preparation of coal samples will affect the sulfur determination results.

2: Improper selection of waste samples and standard samples of sulfur testers.

3: The particle size of the test coal sample is uneven, and the representativeness is not strong enough.

4: The sulfur measurement test process is not standardized.

5: During the test, when the melting plate of the electrolytic cell has ash or black deposits, it will cause the gas path to be blocked, so that the measurement result is low.

Ways to avoid it:

Standardized use: 1. Preparation of electrolyte: 5 grams of potassium iodide and 5 grams of potassium bromide, dissolved into 250 300ml of divaporated water, and then 10ml of glacial acetic acid (glacial acetic acid) electrolyte can be reused, when the pH value of the electrolyte should be between 1 2, when the pH value is < 1 or turbidity, the preparation of the electrolyte should be updated.

2. Open the front electrolysis window and load the electrolyte into the electrolytic cell.

3. Turn on the power of the host (the power switch is at the bottom left of the back of the instrument).

4. Press the heating button on the operation panel, and the instrument will automatically heat up to 1150.

5. Press the stirring button, the stirrer will automatically increase the speed, and the air pump will automatically open, at this time, check whether the gas path is normal, adjust the pumping flow to 1000ml min, and pinch the air intake pipe above the electrolytic cell by hand, if the suspended particles under the pumping flowmeter fall to the bottom, it means that the air purification system does not leak, otherwise check the air leakage.

6. Preparation before specimen weighing: Before specimen weighing, the coal sample in the specimen bottle should be mixed evenly as much as possible, and the top of the specimen bottle with a lid can be held with your hand, and the garden movement should be done from top to bottom, and it should not be shaken up and down. Thorough mixing of the specimen is an important factor in ensuring test results.

7. Weigh the coal sample (50mg to keep one decimal place (), and cover it with a layer of tungsten trioxide to prevent deflagration.

8. After pressing the electrolytic button, press the return button, the porcelain tray tray will be automatically opened, and the sample feeding rod will be automatically sent out of the right outer side of the instrument.

9. After the sample rod is reset, press the zero button, and then type in the weight of the sample.

10. Type the test date: press the date key, type 2005 and then press the date key again, type 0820. Note: Two digits must be typed for both the month and the day.

In this case, the print date is August 20, 2005, and if you forget to enter the date, the print result will be ??? Year?? Month??

Day. 11. After putting the porcelain boat with coal samples on the pallet, press the start button, and the instrument will automatically enter the test working state.

12. After doing one or two waste samples according to the above methods, you can enter the state of doing positive samples. After each test, the test results are automatically printed. After clearing, repeat the following test process.

13. After the test work is completed, press the start and send the sample button, and then press the return button, the sample feeding rod will automatically retreat into the body, and after it is in place, close the sample feeding. Press the start stirring button, turn off the heat button and finally turn off the power switch.

Assay analysis of coal Assay analysis.

Among all coal quality analysis instruments, the sulfur meter has the highest failure rate, and the general failure phenomenon is low or inaccurate results. According to the previous maintenance records, the reasons for the low and unstable results of the sulfur tester were summarized, including the stirring speed, air tightness, incorrect waste samples, and rupture of the reducer. 1. Stirring speed.

If the stirring is too slow, there will be tailing at the end of the electrolysis process, and the iodine generated by electrolysis will not diffuse rapidly, which will cause the endpoint control of the sulfur meter to fail, and the accurate and accurate total sulfur value cannot be obtained, which will affect the accuracy of the test results.

Stirring too fast may cause the suction plate on the stir bar and stirring motor to lose step, and once out of step, it will cause overelectrolysis. 2. Air tightness.

If the gas flow rate is too small, there will be two evil consequences: on the one hand, it will cause incomplete combustion, resulting in low sulfur meter measurement results; On the other hand, it is not easy to take away the sulfur dioxide generated by coal combustion and be absorbed by the absorbent solution, so that the end point is not easy to determine, which often leads to high results. If the gas flow is too large, the sulfur oxide gas may pass through the absorption liquid too quickly, and it will be carried away before it can be absorbed, resulting in a low result. 3. The impact of waste samples.

When using high-sulfur coal for neutralization, the weight of the coal sample should be equal to that of the normal experiment. The electrolysis indicator should be off when returning, and if it is returned when the light is on, it should be sent back into the furnace for combustion and decomposition, so as to avoid the residue of sulfur content leading to high results for the official sample.

When using low-sulfur coal samples for neutralization, it should be noted that several neutralization samples (waste samples) may need to be done in order to achieve the best electrolysis. 4. Reducer.

The reducer fractured, resulting in a decrease in the tightness of the sulfur meter, resulting in low and unstable measurement results.

It is common that the reducer is not cleaned, resulting in the clogging of the tip of the reducer or more foreign bodies, which also affects the measurement results of the sulfur tester. The above 4 are the main reasons for the instability of the sulfur tester results, and there are also the electrode piece pollution of the electrolytic cell, start-up, and system failure of the sulfur meter controller.

1) The purpose of coal sample preparation is to prepare the collected coal samples into representative coal samples for analysis through crushing, mixing and shrinkage procedures. If the coal sample is not operated according to the regulations, such as not proportionally reduced, and made to reach the air dry state, there is no magnet to suck the iron filings in the coal sample, and it is not crushed into a smaller coal sample, and the accurate measurement results will not be obtained, so the coal sample preparation is bad.

2) The waste sample and standard sample of the sulfur tester are not properly selected, and a waste sample should be made before each instrument is turned on for testing, and then a standard sample should be made, and then a test sample should be made after the standard sample is qualified. If the sulfur content of all standard samples is high and the sulfur content of the tested sample is low, the measurement results will be incorrect due to the inconsistency of the correction coefficient. Therefore, the improper selection of waste samples and standard samples of sulfur tester is the main reason.

3: The particle size of the test coal sample is uneven, and the representativeness is not strong enough. Since the particle size and ash content of coal are very uneven, when the particle size of the sample is uneven, the precision of the measurement results will be poor. Therefore, when preparing analytical samples, they must be fully ground and sieved to improve their uniformity. The sample should be weighed in an appropriate amount and evenly flattened.

The sampling is not representative, resulting in deviation of the results or unstable measured values, so the particle size of the coal sample is uneven, and the representativeness is not strong enough.

4) The sulfur measurement test process is highly standardized, if it is not operated in accordance with the national standard and procedures, it will inevitably affect the accuracy of the data and cause damage to the instrument, therefore, the sulfur measurement is not strictly in accordance with the national standard.

5: During the test, when the melting plate of the electrolytic cell has ash or black deposits, it will cause the gas path to be blocked, so that the measurement result is low. The indicator electrodes of the electrolytic cell are also susceptible to contamination due to long-term exposure to the air, so the electrolytic cell is not cleaned in time.

6) The electrolytic cell is commonly used in the analysis of potassium iodide potassium bromide glacial acetic acid distilled water, which is stored in a cool and dark place. After several measurements of the sample, sulfuric acid is formed in the electrolyte, which can also make the measurement results low. Therefore, the reason why the electrolyte is not changed regularly is the main reason.

7) The environment of the sulfur tester laboratory is poor, and the temperature of the laboratory should be controlled in a separate room.

There are many factors in this question, you can ask the manufacturer, or directly question me Zhengzhou 8 Hengya 9 instrument.

We are a brick factory, using Hebi Keli's calorimeter and sulfur meter.

The operation and process of sulfur sample measurement of sulfur tester.

We are a brick factory, using Hebi Keli's calorimeter and sulfur meter.

WZDL-B6 Automatic Sulfur Determination Instrument:

How to use: Turn on the power supply, and the combustion furnace will automatically heat up to the set temperature and keep the temperature constant.

Add electrolyte. Before the test, the air pump and agitator must be turned on. The flowmeter indication should be between, generally.

The speed of the agitator is generally about 500 rpm, and it cannot be adjusted too slowly or too fast. If the electrolyte is stirred too slowly, the test results are not accurate. If you go too fast, you will lose your step, and the test results will not be accurate.

The three-digit sample weight is 000, and the quartz boat does not put coal samples, and the "OK" button can be pressed to debug the sample feeding mechanism, and the coulomb titration will not be carried out at this time, and there will be no overelectrolysis phenomenon. The computer will automatically start the sample feeding mechanism to stay at 1150, and then press the "C" button to force it back.

If there is a problem with the sample delivery mechanism, please refer to the chapter "Troubleshooting Common Faults" for specific troubleshooting.

Weigh a coal sample of about 50 0 mg on the porcelain boat, cover it with a layer of tungsten trioxide, put the porcelain boat into the quartz boat, put in a three-digit sample weight, press the "OK" button, the whole test process is controlled by the computer, and the program is executed according to the pre-written program. Stop at 500 respectively, and then automatically control the sample feeding mechanism to gradually reach 1150, and stay there for up to 9 minutes. After the specimen has been fully burned and decomposed, the computer will automatically determine the end point of the Coulomb titration and return early.

After the quartz boat and porcelain boat automatically return to their original position, the printer will print out the results, and the coal sample test will be completed.

In order to prevent the occurrence of over-electrolysis, the computer automatically controls the opening and closing of the electrolytic switch. Therefore, before the test, the air pump and agitator must be turned on, and then the three-digit sample weight must be inserted and the "sample feeding" button must be pressed to start the whole test process.

For each first test, the indicated voltage is generally less than 35mV, so 1-2 waste samples should be burned to correct the electrode potential of the iodine-iodine ion pair in the electrolyte to the value required by the instrument.

The test should be carried out continuously, if the interval between the tests is long, and if the indicated voltage is less than 35mV, a waste sample needs to be burned before the test.

After the test, the air pump and agitator should be turned off first, and then the power switch should be turned off. If it is not used for a long time, the electrolyte can be discharged, and the electrolytic cell can be cleaned with distilled water.

Zhongke Sanbo B6 sulfur meter.

After-sales service:1The warranty period of the main engine of various coal quality analysis instruments is one year, and the product is maintained for life

2.Perennial first-class coal testing equipment wearing parts and consumables to ensure that the coal instrument can be used for a long time.

3.Responsible for installation, commissioning and training of your coal quality laboratory technician until they can operate independently.