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① 對高性能電磁力平衡原理的力值傳感器進(jìn)行優(yōu)化設(shè)計(jì)，將原來的1mg精度提高到了0.1mg，極大地提升了提高了儀器的靈敏度、準(zhǔn)確性和重復(fù)性；
② 采用了STN寬視角背光液晶顯示器；
③ 對數(shù)據(jù)處理軟件進(jìn)行了多次優(yōu)化，可長時(shí)間測量試樣的沉降性能和微小顆粒。計(jì)算更流暢，結(jié)果更準(zhǔn)確；
④ 采用先進(jìn)的數(shù)據(jù)結(jié)構(gòu)，對原有的數(shù)據(jù)庫程序進(jìn)行重新編制，性能更加穩(wěn)定可靠。

顆粒測定儀由高精度電子沉降天平、計(jì)算機(jī)及顆粒度數(shù)據(jù)處理軟件組成。當(dāng)沉降液中的被測顆粒沉降到天平稱盤上，液晶顯示屏即顯示質(zhì)量值，該質(zhì)量信號同時(shí)傳輸?shù)接?jì)算機(jī)，由顆粒度數(shù)據(jù)處理軟件實(shí)時(shí)采集質(zhì)量信號并顯示在計(jì)算機(jī)屏幕上，沉降結(jié)束后，可將曲線儲(chǔ)存起來，以便隨時(shí)調(diào)用，然后進(jìn)行顆粒度計(jì)算，計(jì)算結(jié)果可以表和圖形式打印出來。

儀器廣泛適用于測定：顏料、研磨料合成樹脂、化妝品、藥品、玻璃、粉末冶金、水泥、塑料、耐火材料、涂料、石油、煤炭等工業(yè)的粉塵粒度及分布情況，是從事顆粒度研究和測試工作的科技人員的常用儀器。

型號	ETT-TZC-IV	ETT-TZC-VI
出廠報(bào)價(jià)	32000	36000
天平最大載荷	100g	100g
天平精確度	1mg	0.1mg
顆粒測定范圍	1～600μm	1～600μm
主機(jī)功能	清零、去皮、自校、報(bào)警
顯示方式	寬視角背光液晶顯示
數(shù)據(jù)處理	沉降曲線采集、存儲(chǔ)、調(diào)用；顆粒大小、中位徑、平均粒徑、比表面積測定；平均誤差計(jì)算；顆粒分布分析；計(jì)算結(jié)果、圖表打印

標(biāo)準(zhǔn)配置：
主機(jī)(自校砝碼一只、電纜線二根) 1臺(tái)
聯(lián)想臺(tái)式電腦一臺(tái)(含彩色噴墨打印機(jī))
沉降盤 1只
普通沉降筒 2只
使用說明書 1份
合格證 1份

測試原理
根據(jù)斯托克斯定理，粉塵顆粒在沉降過程中，發(fā)生顆粒分級，因而靜止的沉降液的粘滯性對沉降
顆粒起著摩擦阻力作用，按公式計(jì)算：
r = 9η/ [2 g (γk –γt )] ? (H / t)
式中：
r = 顆粒半徑 cm
η= 沉降液粘度泊，即克/厘米?秒
γk= 顆粒比重克/厘米³γt = 沉降液比重克/厘米³H = 沉降高度(沉降液面到稱盤底面的距離) 厘米
t = 沉降時(shí)間秒
g = 重力加速度 980厘米/秒2
當(dāng)測出顆粒沉降至一定高度H 所需之時(shí)間t 后，就能算出沉降速度V、顆粒半徑r。所謂沉降分析法就應(yīng)用此理論來求得顆粒分布情況。

經(jīng)典的測試原理、清晰明了的測試過程、穩(wěn)定可靠的測試數(shù)據(jù)、快速方便的數(shù)據(jù)處理、簡單易懂的操作、低廉的價(jià)格，尤其適合工礦企業(yè)實(shí)驗(yàn)室做質(zhì)量檢測以及大專院校的師生開展相關(guān)科研

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Introduction

① force value sensor for high-performance electromagnetic force balance principle to optimize the design of 1mg accuracy increased to 0.1mg greatly enhanced to improve the sensitivity, accuracy and repeatability of the instrument;
② The STN wide viewing angle, backlit LCD display;
The ③ optimize the data processing software for a number of long measurement sample performance of the settlement and small particles. The calculation is smoother, more accurate results;
④ the use of advanced data structures, re-preparation of the original database program, the more stable and reliable performance.

The particle detector consists of high precision electronic settlement balance, computer and granular data processing software. Settlement solution in the measured particle deposition to the balance pan, the LCD screen that displays the value of quality, at the same time the quality of the signal transmitted to the computer, the end of the real-time acquisition-grained data-processing software quality signal and displayed on a computer screen, the settlement after the curve stored in order at any time call, and then proceed to the calculation of particle size, the calculation results table and graphical print out.

The instrument is widely used in the determination: pigments, abrasive synthetic resins, cosmetics, pharmaceuticals, glass, powder metallurgy, cement, plastics, refractories, paint, oil, coal and other industrial dust particle size and distribution, is engaged in the research and testing of particle size commonly used instrument for the work of scientific and technical personnel.

Main technical parameters:

Model ETT-TZC-V ETT-TZC-VI

Balance the maximum load             100g                        100g
Balance accuracy                           1mg                          0.1mg
Particle determination range         1 ~ 600μm             1 ~ 600μm
The host function is cleared, peeled, self-calibration, alarm
Way wide viewing angle, backlight LCD.
Data processing subsidence curves of the collection, storage, call; particle size, median diameter, with an average particle size, specific surface area measurements; average
Error calculation; particle size distribution analysis; calculations, charts, print

Standard configuration:
Host (a self-calibration weights, cable two) 1
Lenovo desktop computers (including color inkjet printer)
A settlement plate
Ordinary sedimentation tube 2
Manual 1
Certificate copy