CN203259439U - Liquid surface tension coefficient-temperature relation measuring apparatus - Google Patents
Liquid surface tension coefficient-temperature relation measuring apparatus Download PDFInfo
- Publication number
- CN203259439U CN203259439U CN 201320303409 CN201320303409U CN203259439U CN 203259439 U CN203259439 U CN 203259439U CN 201320303409 CN201320303409 CN 201320303409 CN 201320303409 U CN201320303409 U CN 201320303409U CN 203259439 U CN203259439 U CN 203259439U
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- liquid
- temperature
- metal frame
- surface tension
- measuring instrument
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Abstract
A liquid surface tension coefficient-temperature relation measuring apparatus is mainly applied in the experiment teaching in junior colleges and special secondary schools, and includes a temperature controlling and measuring instrument, a pedestal, an electronic balance, a liquid to be measured, a temperature sensor, a liquid film height adjusting knob, a small hook, a metal frame, a heater, a glass container and a support, the temperature of the liquid to be measured is measured and controlled by the temperature controlling and measuring instrument, the temperature sensor and the heater, the glass container filled with the liquid to be measured is put on the weighing disc of the electronic balance, the metal frame is hang on the small hook, the small hook is fixed at the lower end of the liquid film height adjusting knob, the liquid film height adjusting knob is adjusted to make the metal frame move up and down, the surface tensions of the liquid at different temperatures are measured through the electronic balance, the width L of the metal frame and the diameter of the metal wire of the metal frame are measured through a vernier caliper, so the surface tension coefficients of the liquid at different temperatures can be obtained.
Description
Technical field
The utility model relates to a kind of liquid surface tension coefficient and temperature relation measurement mechanism, is mainly used in large, the experimental teaching of special secondary school universities and colleges.
Background technology
The macro manifestations of molecular force makes liquid level have the trend of contraction in the liquid-covered.The imagination draws a line at liquid level, and the liquid that surface tension just shows as the straight line both sides interacts with certain pulling force.This tension force vertically is directly proportional with this straight line and with the length of line, and scale-up factor is called surface tension coefficient.Liquid surface tension coefficient is relevant with impurity and temperature, and mixing some impurity in the liquid can increase surface tension coefficient, may reduce surface tension coefficient and mix other impurity; Temperature raises, and surface tension coefficient will reduce.At present, measures the liquid surface tension coefficient method and pull method, capillary tube technique, sessile drop method, liquid volume method and maximum bubble method etc., but the instrument of measuring liquid surface tension coefficient and temperature relation is seldom, and measure numerous and diverse, measuring error is large.
Summary of the invention
In order to measure the relation of liquid surface tension coefficient and temperature, the utility model provides a kind of liquid surface tension coefficient and temperature relation measurement mechanism, this liquid surface tension coefficient and temperature relation measurement mechanism can accurately measure the surface tension coefficient of liquid under the different temperatures, and simple, convenient.
The technical scheme that its technical matters that solves the utility model adopts is: it contains temperature control and measuring instrument, base, electronic balance, testing liquid, temperature sensor, liquid membrane adjusting knob, little hook, metal frame, well heater, glass container, support.Support is housed on the base, the liquid membrane adjusting knob is housed on the crossbeam of support.Electronic balance places on the base, and the glass container that testing liquid is housed places on the weighing pan of electronic balance.Temperature sensor links to each other with measuring instrument with temperature control by connecting line, and the probe of temperature sensor places testing liquid, but does not contact with glass container, and the temperature of testing liquid is shown by temperature control and measuring instrument.Well heater places testing liquid, but does not contact with glass container, and well heater links to each other with measuring instrument with temperature control by cable.Measure and control the temperature of testing liquid by temperature control and measuring instrument, temperature sensor and well heater.Under different temperatures, regulate the liquid membrane adjusting knob and by little hook metal frame is moved up and down, when the metal frame upper side frame just is positioned at liquid level, read electronic balance reading W
1When metal frame is drawn out liquid level to liquid film and just breaks from testing liquid, read electronic balance reading W
2, the surface tension that records testing liquid is F=(W
1-W
2) g, measure metal frame width L with vernier caliper, by
Can try to achieve the surface tension coefficient a of testing liquid under the different temperatures, in the formula, g is local acceleration of gravity, and d is the wire diameter of metal frame.
The beneficial effects of the utility model are, well heater places testing liquid, but do not contact with glass container, well heater links to each other with measuring instrument with temperature control by the cable line, by temperature control and measuring instrument, the temperature of testing liquid is measured and controlled to temperature sensor and well heater, the glass container that testing liquid is housed is placed on the scales/electronic balance weighing dish, metal frame hangs on the little hook, little hook is fixed on liquid membrane adjusting knob lower end, by regulating the liquid membrane adjusting knob metal frame is moved up and down, when the metal frame upper side frame just is positioned at liquid level, read the electronic balance reading, when metal frame is drawn out liquid level to liquid film and just breaks from testing liquid, read the electronic balance reading, can obtain surface tension of liquid under the different temperatures according to its difference of reading, measure metal frame width L and metal frame diameter wiry with vernier caliper, can try to achieve the liquid surface tension coefficient under the different temperatures.This liquid surface tension coefficient and temperature relation measurement mechanism can accurately measure the surface tension coefficient of liquid under the different temperatures, and simple, convenient.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is structural representation of the present utility model.
Among the figure 1, temperature control and measuring instrument, 2, base, 3, electronic balance, 4, testing liquid, 5, temperature sensor, 6, the liquid membrane adjusting knob, 7, little hook, 8, metal frame, 9, well heater, 10, glass container, 11, support.
Embodiment
Support (11) is housed on the base (2), liquid membrane adjusting knob (6) is housed on the crossbeam of support (11).Electronic balance (3) places on the base (2), and the glass container (10) that testing liquid (4) are housed places on the weighing pan of electronic balance (3).Temperature sensor (5) links to each other with measuring instrument (1) with temperature control by connecting line, and the probe of temperature sensor (5) places testing liquid (4), but does not contact with glass container (10), and the temperature of testing liquid (4) is by temperature
Control shows with measuring instrument (1).Well heater (9) places testing liquid (4), but does not contact with glass container (10), and well heater (9) links to each other with measuring instrument (1) with temperature control by cable.Measure and control the temperature of testing liquid (4) by temperature control and measuring instrument (1), temperature sensor (5) and well heater (9).Under different temperatures, regulate liquid membrane adjusting knob (6) and by little hook (7) metal frame (8) is moved up and down, when metal frame (8) upper side frame just is positioned at liquid level, read electronic balance (3) reading W
1When metal frame (8) is drawn out liquid level to liquid film and just breaks from testing liquid (4), read electronic balance (3) reading W
2, the surface tension that records testing liquid (4) is F=(W
1-W
2) g, measure metal frame width L with vernier caliper, by
Can try to achieve the surface tension coefficient a of testing liquid under the different temperatures (4), in the formula, g is local acceleration of gravity, and d is the wire diameter of metal frame (8).
Claims (1)
1. a liquid surface tension coefficient and temperature relation measurement mechanism, it contains temperature control and measuring instrument, base, electronic balance, testing liquid, temperature sensor, the liquid membrane adjusting knob, little hook, metal frame, well heater, glass container, support, support is housed on the base, the liquid membrane adjusting knob is housed on the crossbeam of support, electronic balance places on the base, the glass container that testing liquid is housed places on the weighing pan of electronic balance, temperature sensor links to each other with measuring instrument with temperature control by connecting line, the probe of temperature sensor places testing liquid, but do not contact with glass container, the temperature of testing liquid is shown by temperature control and measuring instrument, it is characterized in that: well heater places testing liquid, but do not contact with glass container, well heater links to each other with measuring instrument with temperature control by cable, by temperature control and measuring instrument, the temperature of testing liquid is measured and controlled to temperature sensor and well heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303409 CN203259439U (en) | 2013-05-30 | 2013-05-30 | Liquid surface tension coefficient-temperature relation measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320303409 CN203259439U (en) | 2013-05-30 | 2013-05-30 | Liquid surface tension coefficient-temperature relation measuring apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259439U true CN203259439U (en) | 2013-10-30 |
Family
ID=49471991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320303409 Expired - Fee Related CN203259439U (en) | 2013-05-30 | 2013-05-30 | Liquid surface tension coefficient-temperature relation measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203259439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827835A (en) * | 2018-07-03 | 2018-11-16 | 重庆知遨科技有限公司 | Pulling escape liquid surface tension coefficient measuring device |
-
2013
- 2013-05-30 CN CN 201320303409 patent/CN203259439U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108827835A (en) * | 2018-07-03 | 2018-11-16 | 重庆知遨科技有限公司 | Pulling escape liquid surface tension coefficient measuring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131030 Termination date: 20140530 |