Add date: 2008-10-10 is monitored in scientific test, environment and in product production process, according to craft requirement, the physical quantity that wants quality of pair of product of a few influences undertakes detecting, have analysis, control then, the physical parameter that makes those are in natural condition if temperature, humidity, pressure, discharge, proportion, chroma, content, below the state of stand-by that a lot of density, chroma value of a quantity that concern with the product are in people. Want to achieve such goal, people developed corresponding testing instrument, the structure from physical quantity, afore-mentioned a few wait to be compared relatively like temperature, humidity, pressure simple, and of the physical quantity such as specific gravity, density, chroma detect, because its structure is complex, variable is much, each variable falls to be shown to specific gravity, density or chroma in different assorted condition nonlinear, because this must have sensor of much physical quantity and multifarious comfortable duration occupy processing system, and the error is amended, compensation, the intelligence that disturbs the soft hardware photograph such as suppression system to be united in wedlock with larger value changes send unit. As a result of afore-mentioned reasons, cause cost of testing instrument of specific gravity, density, chroma taller, import online chroma instrument for example from ~ of a yuan of liquid price of 3 yuan of liquids is 100 thousand ~ about hundred thousands of yuan of RMB. So high price makes its are popularized hard in industrial domain, and the blame that can use a convention only is online solution of sampling, solute is separate, again stoving, or evaporate is smooth, or say to wait for means to detect again after chemical depart. This kind of means is in industry is put in serious malady in timely monitoring, because arrive from sampling,detect the result comes out working procedure is much, need time is longer, become sometimes last sampling detects the result has not come out, chroma of its job liquid has changed a new value of a quantity, this cannot carry out record, analysis, control apparently, affect product quality directly then.
Ultrasonic is online chroma appearance is current the most advanced measurement on international mode and newest detect what concept photograph is united in wedlock is high quality, testing instrument of physical quantity of low price liquid, it uses ultrasonic to transmit condition mediumly in dissolve sex liquid is medium of the temperature that follows solution, pressure, fluid the change and changes character that mixes unit number, unit chroma or proportion, the relevant physical quantity of unit solution plans to close through the computer, usable and corresponding finite yuan for many times equation will describe. Accordingly, mixture solution of sex of complete to unit dissolve, again also the chroma appearance of unlike tradition, the chroma that can be used at a kind of solution only is measured, and the computer that ultrasonic chroma appearance should pass simple solution of single to the target look only plans to add up to demarcate, can use at fluid of oar of coal of sewage, ore pulp, water, medicine, pulp to wait for a variety of unit liquid chroma is monitored, widened greatly the applied domain of only station instrument, managing many capital is devoted.
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