www.cgongxi.com-国产日产久久高清欧美一区WW,国产在线观看无码免费视频,国产日产久久高清欧美一区WW,国模欢欢炮交啪啪150P

產(chǎn)品列表PRODUCTS LIST

首頁(yè)>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>190U甲基溶纖劑(乙二醇-甲醚)氣體檢測管190U METHYL CELLOSOLVE 5-500ppm

甲基溶纖劑(乙二醇-甲醚)氣體檢測管190U METHYL CELLOSOLVE 5-500ppm

簡(jiǎn)要描述:

甲基溶纖劑(乙二醇-甲醚)氣體檢測管190U METHYL CELLOSOLVE CH3OCH2CH2OH 5-500ppm,其它行業(yè)如石油化工、天然氣、冶金冶煉等使用也逐年擴大。據我們調研,在環(huán)境保護組織和勞動(dòng)安全行業(yè)已經(jīng)制訂了檢測管使用的相應法律法規措施,氣體檢測管成為一種*的環(huán)境監測的安全工具。

更新時(shí)間:2024-07-14

在線(xiàn)留言
甲基溶纖劑(乙二醇-甲醚)氣體檢測管190U METHYL CELLOSOLVE 5-500ppm

甲基溶纖劑(乙二醇-甲醚)氣體檢測管190U METHYL CELLOSOLVE 5-500ppm

Tube 90U
0
30
40
50
20
10
Ethanol〔ppm〕?
FIG.1 Influence of Ethanol
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500
(300ml)? (100ml)?
0
300
400
500
200
100
1,1,1-Trichloroethane〔ppm〕?
FIG.2 Influence of 1,1,1-Trichloroethane
Ethyl cellosolve indicating value 〔ppm〕
100 200 300 400 500 600
(300ml)?
1. PERFORMANCE
1) Measuring range :5-500 ppm
Number of pump strokes 3(300ml)
2) Sampling time :4.5 minutes/3 pump strokes
3) Detectable limit :2 ppm
4) Shelf life :2 years
5) Operating temperature :10~35℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
C2H5OCH2CH2OH+Cr6++H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
500
200
150
100
50
20
5
300ml
ppm
(White)
DEHUMIDIFIER
????
190U ETHYL CELLOSOLVE
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Ethers 〃〃
(Pmaroarfefi nth haynd Cro3c)arbons Whole reagent is changed to Brown. 〃
Aromatic hydrocarbons 〃〃
Esters 〃〃
Ketones 〃〃
Halogenated hydrocarbons FIG.2 〃〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 10℃ 15℃ 20℃ 25℃ 30℃ 35℃
(ppm) (50°F) (59°F) (68°F) (77°F) (80°F) (95°F)
500 800 620 500 410 335 265
400 620 490 400 325 260 200
300 450 365 300 245 195 145
200 290 245 200 160 125 95
150 215 185 150 120 90 70
100 145 125 100 80 60 45
50 75 65 50 40 30 25
20 30 25 20 15 12 10
5 10 7 5 4 3 2

龙游县| 巴彦淖尔市| 海南省| 长沙县| 旌德县| 丰城市| 阿坝县| 海宁市| 华亭县| 德令哈市| 威海市| 色达县| 合作市| 东乌珠穆沁旗| 吉木乃县| 东辽县| 双鸭山市| 宁国市| 抚顺县| 曲沃县| 景宁| 松潘县| 商丘市| 巴林右旗| 房山区| 德格县| 益阳市| 江达县| 嵊州市| 大关县| 康保县| 洛宁县| 赤水市| 东城区| 洮南市| 旬邑县| 随州市| 娄烦县| 祁阳县| 鄯善县| 阿巴嘎旗|