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Summary of Contents for Huazheng HZ1731
- Page 1 HZ1731 Full Automatic Surface Tension Tester User Manual Huazheng Electric Manufacturing (Baoding) Co., Ltd...
- Page 2 (0312) 6775656 to tell you to ser ve you at all times- Baoding Huazheng Elect ric Manufact uring Co. , Lt d. , our company will def initely make you satisf ied!
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Page 3: Table Of Contents
Contents I.Summary..............................4 II.Instrument Introduction........................6 III.Instrument Operation........................10 IV.Attention............................. 14 V.Appendix............................. 15... -
Page 4: I.summary
I.Summary This is HZ1731 full automatic surface tension tester including platinum plate method and platinum ring method produced by . The surface tension is a basic property of liquid, especially surfactant aqueous solution. Can measure the surface tension value of various liquid quickly and accurately with physical method instead of chemical method. - Page 5 distribution in the surface layer (a thin liquid layer contacting gas ) is sparser than internal. Intermolecular repulsion in surface layer decreases as the distance between each other increases. Intermolecular attraction prevails in surface layer. Mutual traction of any two parts in surface layer prompts a shrinking trend in surface layer.
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Page 6: Ii.instrument Introduction
II.Instrument Introduction 2.1 Technical index Model HZ1731 Resolution (mN/m) Measure range(mN/m) 0-1000 Repeatability (mN/m) Accuracy(mN/m) Balance precision(Domestic) 1/1,000 Weighing system electromagnetic force balance both platinum plate and platinum ring method are Test mode provided; Display mode 5-inch color touch screen touch operation;... - Page 7 2.4 Instrument panorama 2.5 Touch screen Home Parameter setting...
- Page 8 Testing interface(platinum plate） 2.6 Software installation (Both touch screen and software operation are available in usage of If do not use software, please ignore this part. But the touch screen can only display the data at a time and can't bring up the history data.) Preparation: connect the software CD and software dog;...
- Page 9 "PL-2303 Driver (Windows 7 32)" for the win 7, 32 bit operating system; "PL-2303 Driver (Windows 7 64 WIN8)" for the win 7 64 bit /win 8/win 10operating system; "PL-2303 Driver (Windows 98 2K XP") for the win XP operating system; “PL-2303 Driver (Windows Vista32)”...
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Page 10: Iii.instrument Operation
III.Instrument Operation If the platinum plate / ring or beaker is not clean, the measured value will have error with poor repeatability, being unstable or having continuous increase or decrease. Please keep clean. For example, when testing water, if you touch the water with finger the tension value will be smaller, because the finger oil can change surface properties of water. - Page 11 Temp correction = actual room temp- display temp 3.2 Parameter calculation: platinum ring operation Calculate parameters with distilled water and high purity ethanol before the test(For example, if distilled water parameters need correction and the sample is ethanol, just replace the test liquid with distilled water in operation steps.) ①...
- Page 12 ⑧ Continue tests. Raise platform directly, repeat steps⑥⑦ until the data is generally stable(Usually, we take the average value of the third, fourth and fifth experimental data in the current test; several times tests are needed for sample of high viscosity.) ⑨...
- Page 13 the scales and "Reset" on the touch screen. ⑥ Let sample stage go up. Press "Platform rise" on the touch screen. When the bottom of the platinum plate is 3~5 mm apart from the ethanol liquid level, press the "Platform stop" on the touch screen.
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Page 14: Iv.attention
Press "ring correction coefficient" in "set parameter" to calculate the correction data. Note: with Plate Method, please select "plate correction "to calculate" plate correction coefficient". 2) Using software: Input the ideal and measured tension value of distilled water and ethanol on the interface and then calculate correction coefficient respectively. -
Page 15: V.appendix
No return to zero of correction before the experiment; inaccurate reset or no reset after a platinum plate or ring being hanged. Sample contamination in wrong operation process The characteristic of liquid to be tested is changing with time. The liquid should be ... - Page 16 butanol 24.6 aniline 42.9 aether 17.0 10.7 ethyl acetate 23.9 mercury 5.2 Density, viscosity and surface tension in the air interface of water at different temp d/(g/cm3) η/(10-3 Pa.s) γ/(mN/m) t/℃ 0.99987 1.787 75.64 0.99999 1.519 74.92 0.99973 1.307 74.22 0.99963 1.271 74.07...
- Page 17 5.3 Density, viscosity and surface tension in the air interface of ethanol at different temp t/℃ d/(g/cm3) η/(10-3Pa.s) γ/(mN/m) 0.795 1.18 22.3 0.785 0.97 21.2 0.777 0.82 20.4 0.765 0.69 19.8 0.755 0.58 18.8 0.746 0.505 0.735 0.44 17.15 0.73 0.38 16.2 0.716...
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