在線toc分析儀廠家  使用與操作方法

開始檢測并計入檢測次數，檢測完畢后顯示最后一次檢測結果，其中幾次檢測的結果均自動保存在查詢記錄當中。檢測次數的設置方式為：用“選擇”鍵移動光標，用“設置”鍵修改數字，按“確定”鍵進行確認，進入分析界面。先進行四次沖洗過程

在線toc分析儀廠家  電導率法

使用紫外燈將水中有機物轉化為二氧化碳，二氧化碳溶解在水中形成碳酸根離子.有機物轉化前后都測量電導率，通過電導率的差值可算出增加的碳酸根含量，就可以算出水中的TOC了。

計算

差減法：總有機碳(mg/L)=總碳-無機碳

直接法：總有機碳(mg/L)=總碳

易耗品更換周期

UV燈和蠕動泵管可以從本公司購買。UV燈為185nm、254nm雙波長紫外燈，蠕動泵管為進口泵管，具有高品質和良好的穩定性。易耗品更換周期參考表5.1。

表5.1  易耗品維護/更換表

主要特征:

1.高精度、高靈敏度，操作簡單。

2.人性化操作界面，有一鍵運行功能，自動管路清洗功能。

3.高性能CPU，觸摸屏設計，超大640*480點陣真彩顯示器。

4.不用拆開機箱更換UV燈和泵管。

5.檢測上限可設定，自動上限報警功能。

6.具有RS232數據接口，歷史數據可存儲6個月。

7.離線檢測和在線檢測可選配。

8.具有打印功能

標準貯備液的制備

(1) 有機碳標準貯備液：稱取干燥后的適量KHC8H4O4，用水稀釋，一般貯備液的濃度為400mg/L碳。

(2) 無機碳標準貯備液：稱取干燥后適量比例的碳酸鈉和碳酸氫鈉，用水稀釋，一般貯備液的濃度為400mg/L無機碳。

電源要求

電壓：220V ? 22V

電源頻率：50Hz ? 1Hz

儲運

1.包裝后的TOC分析儀應儲存在相對濕度不大于80%，無腐蝕性氣體且通風良好、陰涼、清潔的室內。

2.運輸按訂貨合同要求，避免碰撞及受潮。

3.若對本儀器進行重新拆卸與安裝，請聯系儀器制造商，由專業技術人員協助解決。

儀器校準

分析儀的‘儀器校準’主要包括兩部分內容，一是儀器的零點校準；

二是藥典里規定的儀器必須滿足的系統適應性試驗。這兩項測試功能的進樣方式都采用手動確認的模式。該部分還設有一個管路沖洗的功能，用于管路的快速清洗，此功能大大縮短了管路清洗的時間。

附件：

試驗主機 一臺

采集管 兩條

電源線 一條

控制系統 一套

數據采集系統 一套

產品使用說明書 一份

產品合格證、保修卡 一份

歷史記錄查詢

分析儀可以自動保存最近1 年的測試數據記錄（包括測試結果和完整的測試條件），超過存儲范圍以后，最早的測試數據會被自動覆蓋。

保存歷史記錄

歷史記錄的保存對象包括：在線分析結果和離線分析結果。分析儀有兩種存儲模式，一種是自動存儲；另一種是手動存儲。當選擇自動存儲時，每次測試結束后，儀器會自動保存本次的測試結果。當選擇手動存儲時，每次開始測試的時候，儀器都會有提示信息，詢問用戶是否要保存數據。如果要保存測試結果則按“確定”鍵保存，如果不保存，則按“取消”鍵放棄保存。

水樣中TOC的分析步驟

水中的有機物質的含量，以有機物中的主要元素一碳的量來表示，稱為總有機碳。 TOC的測定類似于TOD的測定。在950℃的高溫下，使水樣中的有機物氣化燃燒，生成CO2，通過紅外線分析儀，測定其生成的CO2之量，即可知總有機碳量。

水中TOC的監測

我們的生活離不開水，若相當多的有機污染物存在于水中，將直接影響水體的質量，對我們的生活和生產造成危害，因此水和廢水的監測，越來越引起人們的重視。其中水體中總有機碳(TOC)含量的檢測，日益引起關注。它是以碳含量表示水體中有機物質總量的綜合指標。TOC的測定一般采用燃燒法，此法能將水樣中有機物全部氧化，可以很直接地用來表示有機物的總量。因而它被作為評價水體中有機物污染程度的一項重要參考指標。

Use and operation methods

Start the test and count the test times. After the test, the last test result will be displayed. The results of several tests will be automatically saved in the query record. The setting method of detection times is: move the cursor with the "Select" key, modify the number with the "Set" key, press the "OK" key to confirm, and enter the analysis interface. First, carry out four flushing processes

Conductivity method

Use ultraviolet lamp to convert organic matters in water into carbon dioxide, which dissolves in water to form carbonate ions The conductivity is measured before and after the transformation of organic matter. The increased carbonate content can be calculated by the difference of conductivity, and then the TOC in water can be calculated.

calculation

Difference method: total organic carbon (mg/L)=total carbon - inorganic carbon

Direct method: total organic carbon (mg/L)=total carbon

Consumables replacement cycle

UV lamp and peristaltic pump tube can be purchased from our company. The UV lamp is a dual wavelength UV lamp of 185nm and 254nm. The peristaltic pump tube is an imported pump tube with high quality and good stability. Refer to Table 5.1 for the replacement cycle of consumables.

Table 5.1 Maintenance/Replacement of Consumables

Part name Replacement cycle*

UV lamp 12 months

Peristaltic pump pipe 12 months

Main features:

1. High precision, high sensitivity and simple operation.

2. Humanized operation interface, with one button operation function and automatic pipeline cleaning function.

3. High performance CPU, touch screen design, large 640 * 480 dot matrix true color display.

4. Do not disassemble the chassis to replace the UV lamp and pump tube.

5. The detection upper limit can be set, and the automatic upper limit alarm function.

6. With RS232 data interface, historical data can be stored for 6 months.

7. Offline detection and online detection are optional.

8. With printing function

Preparation of standard stock solution

(1) Organic carbon standard stock solution: weigh an appropriate amount of KHC8H4O4 after drying, dilute with water, and the concentration of stock solution is 400mg/L carbon generally.

(2) Inorganic carbon standard stock solution: weigh sodium carbonate and sodium bicarbonate in proper proportion after drying, dilute with water, and the concentration of general stock solution is 400mg/L inorganic carbon.

Power requirements

Voltage: 220V ? 22V

Power frequency: 50Hz ? 1Hz

storage and transportation

1. The packaged TOC analyzer shall be stored in a well ventilated, cool and clean room with a relative humidity of no more than 80%, no corrosive gas.

2. The transportation shall comply with the requirements of the order contract to avoid collision and dampness.

3. If the instrument is to be disassembled and installed again, please contact the instrument manufacturer and ask professional technicians to help solve the problem.

Instrument calibration

The instrument calibration of the analyzer mainly includes two parts: one is the zero calibration of the instrument;

The second is the system adaptability test that the instrument specified in the pharmacopoeia must meet. The injection mode of these two test functions adopts the manual confirmation mode. This part is also equipped with a pipeline flushing function, which is used for rapid cleaning of the pipeline. This function greatly shortens the pipeline cleaning time.

enclosure:

One test host

Two collection tubes

One power cord

A set of control system

A set of data acquisition system

One copy of product operation manual

One copy of product certificate and warranty card

History Query

The analyzer can automatically save the test data records (including test results and complete test conditions) of the last year. If the storage range is exceeded, the earliest test data will be automatically covered.

Save History

Historical records are saved for online analysis results and offline analysis results. The analyzer has two storage modes, one is automatic storage; The other is manual storage. When automatic storage is selected, the instrument will automatically save the test results after each test. When manual storage is selected, the instrument will give a prompt every time the test starts, asking the user whether to save the data. If you want to save the test results, press OK to save them. If you do not want to save them, press Cancel to discard the saving.

Analysis steps of TOC in water sample

The content of organic matter in water, expressed by the amount of one carbon, the main element in organic matter, is called total organic carbon. The determination of TOC is similar to that of TOD. Under the high temperature of 950 ℃, the organic matter in the water sample is gasified and burned to generate CO2. The total organic carbon can be known by measuring the amount of CO2 generated through the infrared analyzer.

Monitoring of TOC in water

Our life cannot be separated from water. If a large number of organic pollutants exist in water, they will directly affect the quality of water bodies and cause harm to our life and production. Therefore, people pay more and more attention to the monitoring of water and wastewater. Among them, the detection of total organic carbon (TOC) content in water has attracted increasing attention. It is a comprehensive indicator of the total amount of organic matter in water body expressed by carbon content. TOC is generally determined by combustion method, which can oxidize all organic matters in the water sample and directly represent the total amount of organic matters. Therefore, it is used as an important reference index to evaluate the degree of organic pollution in water bodies.