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Summary of Contents for Drawell DW-ATN-300
- Page 1 Automatic Kjeldahl Apparatus DW-ATN-300 Drawell International Technology Limited Shanghai Drawell Scientific Instrument Co.,Ltd Add :Suite 1506,Lane581 XiuChuan Rd.,PuDong New Area,Shanghai,China Tel/ Fax: 0086 21 50966080 Web : www.drawell.com.cn Email : sales01@drawell.com.cn...
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Page 2: Table Of Contents
Table of Contents Safety Instructions ················································································1 Packing List ·······················································································3 I. Descriptions ·····················································································4 II. Working Principles ··············································································4 III. Technical Indexes of the Apparatus····························································5 IV. Apparatus Structure ···········································································6 V. Installation Method ·············································································7 5.1 Pre-installation Check ····································································7 5.2 Installation Conditions ·····································································7 5.3 Installation Steps ·········································································7 5.4 Debugging ················································································7... -
Page 3: Safety Instructions
Dear User: Thank you for choosing our products. It is recommended to carefully read this User’s Guide prior to startup to get a satisfied effect. Please contact us for any questions and we will offer warm-hearted service to you. The User’s Guide is prepared with efforts of all technical workers, and the trial version has been completed. - Page 4 6. It is forbidden to repair the product without permission; in case of repair entrusted by the company, the professional staff shall be employed for guidance. 7. The working environment shall be free from dust and flammable and explosive gases. 8.
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Page 5: Packing List
Packing List Please check and count the accompanied accessories Articles in the host machine case Host machine ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯1 User’s Guide⋯⋯ ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯1 Product Warranty Card ⋯⋯⋯ ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯1 Product Qualification Certificate ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯1 Accessories in the accessory box Distilled water inlet pipe (6mm*1.5m) ⋯⋯⋯⋯⋯⋯⋯⋯1 Alkali liquid inlet pipe (6mm*1.5m) ⋯⋯⋯⋯⋯⋯⋯⋯⋯1 Boric acid solution inlet pipe (6mm*1.5m) ⋯⋯⋯⋯⋯⋯⋯⋯1 Waste distilled water pipe (6mm*1.5m) ⋯⋯⋯⋯⋯⋯⋯⋯⋯1... -
Page 6: Descriptions
I. Descriptions Kjeldahl method is a classic method for nitrogen determination. Currently, the Kjeldahl method is frequently applied for determining the nitrogen content of the soil, foods, agricultural products, feeds and other substances. When this method is applied for the sample determination, three processes including digestion, distillation, and titration will be gone through, and the distillation is an important process in Kjeldahl method. -
Page 7: Technical Indexes Of The Apparatus
titration with sulfuric acid or hydrochloric acid. III. Technical Indexes 3.0. Measuring range: 0-250mg N 3.1. Distillation speed: ≈15——20ml/min; ≤8-5min/sample 3.2. Recovery rate: 99.9±0.5% 3.3. Distillation time: Ranging from 0 to 999s 3.4. Cooling water consumption: 1.2L—2.4L/min 3.5. Amounts of water filling, alkali filling, acid filling: 0—99ml 3.6. -
Page 8: Apparatus Structure
IV. Apparatus Structure The system is mainly composed of the microcomputer controller, steam generator, distillation system, and liquid filling system. Figure of the Front-side Structure of the Apparatus (see Figure 4-1) 1- Front cover 2- Steam tube 3- Digestion pipe 4- Liquid crystal display 5- Power switch 6- Distillate outlet pipe / boric acid filling pipe... -
Page 9: Installation Method
V. Installation Method 5.1 Pre-installation Check After the apparatus is unpacked, please check all accessories for damages according to the “Packing List”; if any damages are discovered, please timely contact with the company (please reserve the damaged parts). 5.2 Installation Conditions (1) The apparatus shall be installed in the working environment with the room temperature of 10-45°C and relative humidity less than or equaling to ≤80%;... -
Page 10: Application Methods And Steps
with the “alkali liquid barrel”. (7). Connect one end of the “boric acid pipe” with the “boric acid inlet” of the host machine and another with the “boric acid barrel”. VI. Application Methods and Steps Pour the reagent which is prepared based on “VII” in page 9 into the container. 6.1. -
Page 11: Flow Calibration
Figure 6.3 Flow-Flow Calibration F6:Alkali-Alkali flow calibration 12.3 S 12ml:Calibration value 12ml F7:Acid-Acid flow calibration 12.3 S F8:Water-Water flow calibration 12.3 S A. Alkali flow calibration: Connect the graduated cylinder (about 100ml) with the alkali filler (by the side of the steam tube, as shown in the Figure 6-4);... -
Page 12: Program Settings
recommended to perform re-calibration according to actual conditions.) 6.4. Program Settings The “program” refers to different “combinations” for “water filling, alkali filling, acid filling, and distillation time”, and the machine can save20 kinds of different “combinations”. Press “F4” in the “function selection” page to enter the “program settings” page: See Figure 6-5. Figure 6-5 Program Settings Water 12 ml: Water filling amount 12 ml... -
Page 13: Automatic Distillation
Figure 6-6 F1:Acid-acid filling F2:Alkali-alkali filling F4:Water-water filling Manual distillation: It means that “on” “off” of the alkali filling, acid filling, water filling, and distillation processes are completed through manual control. A.Press “F1” to select the “acid filling”; when the boric acid solution in the conical flask reaches the requirement, press “F1”... -
Page 14: Reagent Preparation Method
A. Press “▲” and “▼” to select the previous “20” programs. (The selected program will be operated; if no selection is made, the previously operated program will be operated.) B. Place the sample (boiling tube). If no boiling tube is placed, the program will not be performed to avoid reagent or steam overflow. - Page 15 select distillation. And, it is acceptable that the steam tube discharges the steam for about 1min. 8.2 The water, alkali and acid calibration must be performed before using the apparatus. 8.3 The digestion pipe shall be well positioned to jack the rubber plug. 8.4 As the digestion pipe will be very hot after distillation, gloves shall be worn upon taking it down to avoid scalding.
- Page 16 Drawell International Technology Limited Shanghai Drawell Scientific Instrument Co.,Ltd Add :Suite 1506,Lane581 XiuChuan Rd.,PuDong New Area,Shanghai,China Tel/ Fax: 0086 21 50966080 Web : www.drawell.com.cn Email : sales01@drawell.com.cn - 14 -...
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