CN86209663U

CN86209663U - Colour moisture meter

Info

Publication number: CN86209663U
Application number: CN 86209663
Authority: CN
Inventors: 潘国治
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-11-29
Filing date: 1986-11-29
Publication date: 1987-10-31

Abstract

The utility model discloses a small-size cartridge colour moisture meter which is made of organic glass or plastics of various colors. On the basis of the principle of chlorinating cobalt indicator paper hygroscopic discoloration, the utility model uses constant air humidity in four inorganic salts saturated solution in water with different colors as the standard for defining quantity. The indicated values are visual and accurate. The color moisture meter is not only a scientific instrument but also an exquisite and beautiful handicraft which is suitable for families, hotels, wards, offices, etc. The utility model is convenient for people automatically regulating humidity and benefits for people's health.

Description

Colour moisture meter

This hygrometer is a kind of atmosphere composition measuring technique.

Present the most frequently used hygrometer, two kinds of hairiness hairdo and wet and dry bulb formulas, the former indicating value is directly perceived.But accuracy is low, and mobility is big, essential periodic calibration; Latter's precision is higher, but measurement result is not directly perceived, and (conversion of need tabling look-up) used inconvenient, and wet bulb is subject to dust and pollutes.Novel electric measuring type (resistance, electric capacity, electricity lead etc.) hygrometer better performances, but bring a high price, be difficult for popularizing, and need calibration.A kind ofly cast in the lip-deep a kind of hygrometric optical sensor of light transmitting fiber (Anal, Chim, Acta, 1985,170(2) 209-216) with cobalt chloride in the gelatin, be based on the water absorbing capacity difference of cobalt chloride, form the hydrate of different amounts, and the generation spectrum change, promptly directly used cobalt chloride moisture absorption metachromatic principle, its characteristics are close with aforementioned electric measuring type hygrometer.

In view of humidity is one and the closely-related problem of people's health, the desirable relative air humidity (RH) in room is 40-60%, at least should be in 30～70% scopes.Yet human body can not show a candle to responsive to temperature the perception of humidity, when chance humidity is excessive or too small, and can't be from main regulation.So, be necessary to develop a kind of room use, indicating value hygrometer directly perceived and accurate, small and exquisite and easy of being suitable for.

Experimental observation is arrived, and a kind of paper of cobalt chloride,test is very sensitive to air humidity reaction, and from the low humidity to the high humidity, test paper presents green orchid, orchid, blue various colors such as purple, purple, purplish red, red, the RH value that can roughly distinguish air from color and luster successively.For further making the indicating value quantification, with the constant RH value of the airtight top of inorganic salts saturated aqueous solution air as quantitative criterion.This because of: as several inorganic salts RH value in 0-30 ℃ of scope as described in the document (Japan's " meter survey skill Intraoperative " in September, 85 number " humidity ヤ Application サ and correction ") almost is constant, and this just lays a good foundation to this hygrometer quantification.The concrete practice is: the saturated aqueous solution (also having partly crystal in the solution) with four kinds of salt such as magnesium chloride, sal tartari, sodium bromide, sodium chloride is enclosed within respectively in four cells, and all there is a paper of cobalt chloride,test each upper end, chamber.Each chamber RH value changes 33%, 43%, 60%, 75% successively into, makes test paper present orchid, purple, four kinds of colors such as pale red, red; Another is put airborne test paper variable color and then becomes with surrounding air humidity, if its color and luster is identical with a certain test paper color and luster in the airtight cell, then surrounding air humidity promptly is equivalent to the humidity of this cell.As can be seen, four kinds of saline solutions provide four kinds of standard humidities at any time, and test paper color and luster and each cell test paper color and luster relatively can distinguish accurately that at that time air humidity is whether in 40-60% or 30-75% scope from air.Moreover, the test paper aberration of two adjacent standard humidities is bigger, very easily distinguishes Neutral colour, RH value in the middle of can further calculating.But, the RH value will be subjected to the influence that temperature, gas flow change constantly in the atmosphere, and it is a variable, thereby the RH value in general room, as long as be controlled in the scope just passable.If measure other more low humidity scopes, available lithium chloride saturated solution is made standard.

This hygrometer method for making is as follows:

1. paper of cobalt chloride,test: filter paper is cut into 25 * 100mm, immerses in 17% cobalt chloride solution, take out then and to dry.

2. hygrometer structure: as accompanying drawing, all make 20 * 70 * 100mm capsule with organic glass or plastics, lid and main body, imitative minitape boxlike connects, and can hang or seat is put.

Among the figure: 1. cover on is opaque.2. nut.3. paper of cobalt chloride,test.4. test paper support.5. whole lid.6. inorganic salt solution storage.The front is transparent, back milky, four liquid reservoirs, the magnesium chloride of packing into successively from left to right, sal tartari, sodium bromide, four kinds of saturated solutions of sodium chloride.In dissolve inorganic salts with the cobalt chloride that adds 0.5-1.0% in the distilled water earlier, even each saline solution presents orchid, purple, four kinds of colors such as pale red, red respectively.Middle uncovered top test paper is promptly measured the usefulness of air humidity.

In sum: this hygrometer has following characteristics:

1. the measured value scope is accurate, and is reliable and stable, needn't calibrate in addition; Indicating value is directly perceived, and is cheap, durable in use.

2. except that test paper showed various color and lusters, also color and luster was different for four kinds of saline solutions, was used organic glass of all kinds or plastics to make, and made this meter color glow.Therefore this hygrometer is not only tool scientific instrument, also is an exquisite beautiful handicraft.

3. this meter is suitable for all kinds of rooms use such as family, hotel, ward, office most.

Claims

1, the colored hygrometer in a kind of room.It is characterized in that being adsorbed on the thin fiber variable color indication relative air humidity with cobalt chloride; And with the constant humidity of several inorganic salts saturated aqueous solution confined spaces as quantitative criterion; Make the colored hygrometer of small-sized boxlike with organic glass of all kinds or plastics.

2, colored hygrometer according to claim 1 is characterized in that filter paper is dipped in 17% the cobalt chloride solution, dries then to form.

3, colored hygrometer according to claim 1 is characterized in that having used four kinds of inorganic salts saturated aqueous solutions, and they are magnesium chloride, sal tartari, sodium bromide, sodium chloride etc., when surveying low humidity, and available lithium chloride saturated solution.In the distilled water of preparation usefulness, add 0.5～1.0% cobalt chloride earlier, the various saturated solutions after the preparation then present different color.