說明: |
Industries Experts行業(yè)專家:
Computrac(鋰Li-ion)電池微量水分測定儀
Computrac Battery Moisture Analyzer
優(yōu)點:
□結(jié)果優(yōu)于傳統(tǒng)烘箱失重法(LOD)和卡氏滴定法(KF)
□無需昂貴有毒的卡氏試劑和電極(陽極、陰極);更避免了樣品與卡氏試劑之間可能發(fā)生的化學反應
□水分測定權(quán)威專家:符合國際標準ASTM D6980-04、D7191-05、D7232-06、D7546-09
□可在任何地方使用,可在生產(chǎn)車間使用, 快速測試!現(xiàn)場樣品測試5-10分鐘
□特殊的水分感應器( RHS )尖端技術(shù),專一水分測試(Computrac Vapor Pro/Rx/Fx )
CTZ-V3100L Computrac Vapor Pro MAXZ-V4000XL Computrac
特殊水分感應器法(RHS) / 替代卡氏滴定法(KF) 干燥失重法(LOD) / 替代烘箱法
?無需化學試劑 ?快25%的吞吐量和冷卻速度
?檢測低至10ppm的水分 ?可連接USB和以太網(wǎng)
?5-10分鐘出結(jié)果 ?檢測低至50ppm的水分
?ASTM方法:D7191-05 ?ASTM方法:D6980-04、D7232-06
?樣品量:10mg-20g ?樣品量:150mg-40g
?靈敏度:1 ppm ( 1 ug ) ?靈敏度:水分0.0001%;天平:0.0001g
?水分測定范圍:10 ppm ( 10 ug ) to 100% ?水分測定范圍:0.005% - 100.000%
?溫度范圍:25 - 275℃ ?溫度范圍:25 - 275℃
1. Computrac的測試是定量分析。
2.測試時間和測試精度【*CV = Coefficient of Variation 變異系數(shù) = Repeatability重復性】:
a. 測試精度(重復性)的統(tǒng)計:Mean:平均值;S.D.:標準偏差;CV:變異系數(shù),優(yōu)于KF卡氏滴定法
[Standard deviation(SD) equal to or better than that of KF on
comparable samples. With repeatability (Coefficient of Variation, CV)
also equal to or better than KF on comparable samples. The previous test
reports I provided you with will give you an excellent reference for
what the customer can expect.]
b. 測試時間,一般測試時間不超過10分鐘。
(3-5 minutes for most Cathode materials. The previous test reports I
provided you with will give you an excellent reference for what the
customer can expect.)
3..采樣環(huán)境:
a.針對低水分(少于1000ppm)或吸潮性較強的樣品,我們建議露點為 - 20到 - 40的手套箱或干燥間內(nèi)采樣
b.針對高水分(大于1000ppm)或吸潮性較弱的樣品對采樣環(huán)境沒有特別要求
(Our instrument does not require a lab, a chemist, or a dry room
environment. The instrument can be used by anyone, on the production
floor, in an office or in a lab. The only environment that should be
specially considered is the environment that the sample needs. Some
samples must be handled in a dry room or dry box because they absorb
moisture very easily. With materials like that, you want to keep the
Vapor pro in the same environment to make transferring of the material
to the Vapor Pro easier.)
4.采樣方法:測試時用金屬瓶蓋和無水硅酸墊片,針對不同的樣品有不同的采樣方法:
a.極片: 樣品稱重后切成條后,加入樣品瓶密封。
例如:Cathode electrode
b.粉末: 樣品稱重后,加入樣品瓶密封。
例如:
Cathod Powder Carbon Sulfter Poly base (Vapor Pro,VPL)
LiCoO2 - Lithium Colbat Dioxide(Vapor Pro,VPL)
LiFePO4 (Vapor Pro,VPL)
LiH2PO4 - Lithium Phosphate monobasic(Vapor Pro,VPL)
LiNiCoO2 - Lithium Nickle Cobalt Dioxide(Vapor Pro,VPL)
LiV3O8 - Lithium Vandium Oxide (Vapor Pro,VPL)
c.液體: 用1ml專用針筒采樣,把樣品滴進裝有1CM X 4CM玻璃纖維濾膜的樣品瓶后密封。加樣前后的針筒都要稱重,以確定加樣重量。
例如:Ionic Dielectric Liquid (Vapor Pro,VPL)
5.測量方法:
不同樣品有不同的測量方法(即測量程序,儀器可貯存102個測量/測試程序)。
例如:
Cathode electrode
Cathod Powder Carbon Sulfter Poly base
LiCoO2 - Lithium Colbat Dioxide
LiFePO4
LiH2PO4 - Lithium Phosphate monobasic
LiNiCoO2 - Lithium Nickle Cobalt Dioxide
LiV3O8 - Lithium Vandium Oxide
Ionic Dielectric Liquid
6.工作原理:
(CTZ-V3100L Computrac Vapor Pro工作原理:)
CTZ-V3100L Computrac Vapor
Pro利用了一個圓柱型的加熱器、一個干燥氣體—載體氣體流動系統(tǒng)和一個水分傳感器。儀器會對被裝在帶有隔膜的25ml玻璃瓶內(nèi)的樣品加熱。從樣品中揮發(fā)出來的物質(zhì)會被送到裝有相對濕度傳感器(RH傳感器)的感應區(qū)。用于檢測蒸氣中的水分的RH傳感器是一個聚合物電容相對濕度傳感器。傳感器的讀數(shù)、傳感區(qū)溫度和載體氣流量經(jīng)過微處利器以生成準確的樣品水分含量。
儀器可以顯示:
Parts per million (ppm) H2O
Microgram (ug) H2O or
Percentage (%) H20
The Vapor Pro uses a polymer capacitance sensor. This sensor changes
capacitance as the dry carrier air containing water passes of the
sensor. This change in capacitance is then translated into ug H2O, ppm
H20, or % H2O. I have also attached a flow diagram to show the rest.
7. 測量步驟(CTZ-V3100L Computrac Vapor Pro測量步驟十分簡單):
1). Weigh sample采樣
2). Place sample in vial and load into Vapor Pro and press Start! 把樣品放入樣品瓶并置于儀器,按開始鍵,自動測試、自動結(jié)束并自動顯示結(jié)果
對于電池行業(yè),我們提供的**化測試程序及分析方法,其測試結(jié)果優(yōu)于KF卡氏滴定法,已得到國際**電池廠家的采用和認可,解決了他們在生產(chǎn)和科研中遇到的復雜問題,提供科學的數(shù)據(jù)。
Yardney Technical Products推薦
Yardney Technical Products, Inc公司作為高能電池組的先鋒,于2006年3月就已經(jīng)將Arizona
Instrument's CTZ-V3100L Computrac? Vapor Pro?應用到Lithion Division。
在過去兩年里,得益于Computrac? Vapor Pro?
CTZ-V3100L的精度和操作速度,降低了測試時間并提高了產(chǎn)能和產(chǎn)品質(zhì)量。Vapor Pro會根據(jù)Technical Products,
Inc. Lithion Division.的產(chǎn)品和發(fā)展工程師Bill Moscaritolo的需要生成出*準確和*快捷的樣品數(shù)值報告。
Bill Moscaritolo |