Second, the technical parameters
1, measuring range: 0-200.00 Mn/m.
2. Resolution: 0. 0 1mn/m
3. It has the function of peak holding.
4. It has the function of peak holding indication.
5. It has the function of automatic indication of lifting.
6. It has automatic stop function of lifting (automatic stop function of liquid film rupture).
7, electronic automatic zero adjustment.
8. Electronic automatic zero indication.
9. Automatically calculate the actual tension value of liquid surface and interface.
10, automatically calculate the average value of actual tension.
1 1, reserve the printer interface. (The test report can be printed by a printer)
12, zero drift: ≤0. 1mn/m( 15min).
13, zero adjustment error: ≤ 0.5% (maximum force value).
14, and the relative error of indication is less than 2%.
15, and the repeatability error of indication is not more than 2%.
16, sample rack travel: 25mm.
17, vertical speed of sample rack:15mm/min 2mm/min.
18, sample cup inner diameter 56mm.
19, sample cup capacity 60 m L
20. Radius of platinum wire: 0.3mm.
2 1, the circumference of platinum wire ring is 60mm.
22. The overall dimension is 400× 220× 350mm.
23. Net weight 10 kg.
24. Power supply 220V/50Hz 5%
25. ambient temperature: room temperature 10℃-35℃
Third, the structure and working principle
The structure of the instrument is mainly composed of torsion wire, differential transformer, platinum ring and lifting part. When in use, the platinum ring is immersed in the measured liquid for a certain position (3-5㎜), and the glassware filled with the measured liquid is driven by the motor, gear and tray to descend. At this time, the membrane between the platinum ring and the liquid to be measured is elongated, so that the platinum ring is pulled downward, the twisted wire is twisted by the lever arm, and the magnetic core of the differential transformer rises with the decline of the platinum ring. The coil of the differential transformer induces a certain voltage value, so that the deformation of the stretched film is converted into a voltage value, which is converted into a corresponding tension value through microcomputer processing and automatically displayed. With the gradual stretching of the film, the tension value gradually increases until the film breaks. The maximum value is the measured tension value p of the liquid, which is automatically multiplied by the correction coefficient v of the liquid to get the actual tension value f of the liquid, that is, F=P? V, the correction coefficient V depends on the measured tension value P, liquid density, platinum wire radius and platinum ring radius.
Because the machine is controlled by microcomputer, the anti-interference of the instrument is improved in software programming and hardware design. Electric zero adjustment is used for zero adjustment, so that the magnetic core of differential transformer can be adjusted to zero as long as it is in a stable state within the zero adjustment range, which is very convenient and reliable to use. The zero adjustment range is 0.00-10.00 Mn/m.
Fourth, the use of the operation panel
The operation panel consists of a liquid crystal display and eight buttons. The buttons are ▲, ▼, Stop, Confirm, Hold, Clear and Reset. The LCD consists of 12 pages, as shown in the figure below.
Boot initial page
"Test parameter input 1" menu page
"Test Parameter Input 2" Menu Page
Test Display Menu Page
Test Results menu page
"Testing Machine Calibration" Menu Page
Test parameter input page 1
Test parameter input 2 pages
Test display home page
Test results page
Test machine calibration page
Password page
1 `, after booting or pressing "Reset", the LCD interface displays the contents of the initial booting page. Press the ▲ or ▼ key on the Start Initial Page, and the contents of the menu pages of Test Parameter Input 1, Test Parameter Input 2, Test Display, Test Result and Tester Calibration will be displayed on the LCD interface in turn.
2. Press the ▲ key in the "Test Parameter Input 1" menu page to enter the "Test Parameter Input 2" menu page. Press the "▼" key to enter the menu page of "Testing Machine Calibration".
3. Press the ▲ key on the "Test Parameter Input 2" menu page to enter the "Test Display" menu page. Press the ▼ key to enter the menu page of "Test Parameter Input 1".
4. Press the ""key in the "Test Display" menu page to enter the "Test Results" menu page. Press the "▼" key to enter the "Test Parameter Input 2" menu page.
5. Press the ▲ key in the "Test Results" menu page to enter the "Tester Calibration" menu page. Press the "▼" key to enter the "Test Display" menu page.
6. Press the ▲ key on the menu page of "Testing Machine Calibration" to enter the menu page of "Test Parameter Input 1". Press the "▼" key to enter the "Test Results" menu page.
7. Key: Move the function key, which also has the function of enabling the Test Display Home Page to enter the Test Results page.
8. "Hold" key: Under the test display homepage, press "Hold" key to measure the tension value, and the maximum measured tension value will be displayed, and the "D:" value of test times will be automatically increased by 1. For example, before pressing the "Hold" key, the test times will display "d:0", and when pressing the "Hold" key, the test times will display "d: 1". In addition, press the "Hold" key, and a "+"prompt will be displayed at the lower right of the LCD interface.
9. The "Reset" key has three functions.
① Under the test display homepage, if the instrument is in the holding state, press the "Reset" key to cancel the holding state.
(2) Under the test display homepage, set the instrument to zero until the platinum ring is immersed in the liquid (P value is in the range of 0.00- 10.00 Mn/m). When prompted "
③ Under the test results page, press the "Reset" button to clear all test results.
Verb (abbreviation for verb) Installation and use of instruments
1. After unpacking, carefully take out the instrument, put it on a stable table, and adjust the leveling knob on the base according to the horizontal bubbles on the instrument (Figure 1- 14) to make the instrument level.
2. Open the upper cover. The magnetic core of the differential (Figure 1-7) has been tightly tied to the lever (Figure 1-9) at the factory. Please untie the tape that binds the magnetic core and put the magnetic core vertically into the hole of the magnetic core (Figure 1-6). Be careful that the magnetic core does not hit the wall and sag freely.
3. The lever (Figure 1-9) should be basically horizontal, otherwise, adjust the bolts at both ends of the torsion line to be basically horizontal.
4. Insert the power plug into an external power socket with reliable grounding, turn on the power switch (Figure 1-2), and stabilize for 15 minutes. Give the platinum ring and glass a good wash. First, clean the platinum wire ring in petroleum ether, then rinse it with acetone, and then heat and dry it in the oxidation flame of gas lamp or alcohol lamp. Special care should be taken when handling the platinum wire ring to avoid deformation of the platinum wire ring.
5. Then hang the hook (figure 1- 10) on the lever, hang the platinum ring (figure 1- 1) on the hook, and put the glass (figure1-kloc-0/2) on the lifting.
6. Press the ▲ key on the "Initial Boot Page", and the menu page of "Test Parameter Input 1" will be displayed on the LCD interface.
7. In the menu interface of Test Parameter Input 1, press OK to enter the page of Test Parameter Input 1. Test parameter input 1 page interface is used to input upper phase density and lower phase density.
8. After entering the test parameter input 1 page, press the ▲ key to select and input the upper phase density, and the value of the upper phase density will flash. Press the key to display the value "0.000" from one digit to the third digit after the decimal point. Which number flashes indicates which number is selected, and press "▲" or "▼" to adjust the corresponding number value (0-9). When the input is finished, press "OK" to exit the upper phase density input. Press the "▼" key to select and input the lower phase density, which is the same as the upper phase density.
9. After inputting data, press the ""key to enter the "Test Parameter Input 2 Menu Page".
10. In the menu page interface of "Input Test Parameter Input 2", press "OK" to enter the test parameter input 2 page. After entering the second page of test parameter input, press the "▲" key to select and input the test times. Enter the corresponding value (0-9) by pressing the "▲" or "▼" key. Press the ▼ key to select and enter the fracture ratio value of the test. Press the ▲, ▼ and ""keys to enter the fracture ratio value. After the input is completed, press "OK" to exit the "Test Parameter Input 2" state.
1 1. Press the ""key to enter the "Test Display" menu page. In the "Test Display Menu Page" interface, press "OK" to enter the test display home page.
P:XXX。 XXmN/m represents the measured tension value.
F:-Mn/m represents the actual tension value.
+:indicates that it is in the peak holding state.
↑, ↓: indicates that the lifting platform is in the rising and falling state.
D: Indicates which test is used to set the current test. Automatic accumulation without specific input (for example, the specific settings are as follows: press the "Confirm" key "D:" for flashing display, press the "▲" or "▼" key to adjust the corresponding digital value (0-9), and then press the "Confirm" key to exit the current test frequency state).
12, and press the "reset" key.
13. Press the "▲" key to raise the glass platform, and the LCD interface displays "at the bottom right.