请选择 进入手机版 | 继续访问电脑版

安规网

 找回密码
 注册安规
安规论坛 | 仪器设备 | 求职招聘 | 国家标准 公告 | 教程 | 家电 | 灯具 | 环保 | ITAV 签到 充值 在线 打卡 设备 好友| 帖子| 空间| 日志| 相册
IP淋雨机 | 证书查询 | 规范下载 | 资质查询 招聘 | 考试 | 线缆 | 玩具 | 标准 | 综 合 红包 邮箱 打卡 工资 禁言 分享| 记录| 道具| 勋章| 任务
水平垂直燃烧机 | 针焰 | 灼热丝 | 漏电起痕
IP防水防尘设备|拉力机|恒温恒湿|标准试验指
灯头量规|插头量规|静风烤箱|电池设备|球压
万年历 | 距清明节还有
自2007年5月10日,安规网已运行
代办出口各国原产地证书;贸促会商会使馆海牙认证沙特Saber 埃及COI 中东GCC|CoC直接发证机构水平垂直燃烧机|灼热丝|针焰试验机|漏电起痕试验机
灯头量规|试验指|GB/T1002-2021插头插座量规耐划痕试验机|可程式恒温恒湿试验箱 | 耦合器设备广东安规-原厂生产-满足标准-审核无忧
查看: 1488|回复: 0

[Various] DSH 724 Measurement of Conductivity

[复制链接]
发表于 2012-11-8 19:53 | 显示全部楼层 |阅读模式
广东安规检测
有限公司提供:
DSH 724
4 D* G3 Z* @/ }& L. @3 ]

) ]( @) V2 y+ U( ~3 a9 {  K
Measurement of Conductivity
! y  z5 W, Q. z9 u
7.3
1 ?8 n9 n/ }0 J" Y' S8 N2 c4 v
60112(ed.4)2 I) D% \( E0 b/ H. s+ b8 R
; J, S2 C, c9 |  h
Standard(s): IEC 60112/2003 No. Year; {0 i. ~3 F0 O. m7 y, h
Ed. 4.0; M5 G: S6 |. h2 T, \3 _; J
DSH3 @, p. c9 n- r
0724
* x+ O/ ]$ |1 y2008
  Y- t" x/ ?5 i. Q4 mCategories: Various, General, ?8 L0 h# c. S8 ?& h, b
Subclause(s): 7.38 G" u' X; F) x
Developed by: WG47 F$ z) D3 z% [9 I
Subject: Measurement of
; X1 H  V" T5 e8 g7 T6 ]- Lconductivity6 {4 s, U9 S, a! U" Y+ a4 }
Key words:
; b# C9 l) k7 @$ ^/ k- Tracking solution5 d: @5 i+ d) ^5 v$ c) m
- Conductivity
8 n( ]! u, K0 D2 Y  [! \- IEC 60589
$ p* S& }7 [2 q( G1 M1 J2 B; n% p' FDecision approved at the
& A$ }8 g2 z7 h& w3 V46th CTL Plenary Meeting,0 O6 _) A1 k' t( _2 @1 c
in 2009
3 W4 W, Q; \" W7 A# e% vQuestion:
7 \3 W9 c. X7 ^+ G$ pClause 7.3 requires that the conductivity of the tracking test solution “be measured with alternating
2 l  s# B+ o- H! {/ `6 \; t* zvoltage at a frequency in the range 1 kHz to 2 kHz. The procedure is described in IEC 60589”.
3 E7 K6 p8 u- _+ G1 K  ^, aThe procedure in IEC 60589 utilises conical flasks with reflux condensors, platinised platinum
: W+ |7 l; \# z' delectrodes, a conductivity cell and a resistance bridge. This appears to be a chemical standard rather' G: z: `$ Y2 F  X3 X6 p; `
than an appropriate electrical test laboratory measurement technique.3 G% O7 M$ K' E/ {( N$ v
Are CBTL:
3 f; |1 s$ M  J- X1 Z7 I. l, A- (a) expected to use this method of measurement for solution conductivity; or* ^; c( T6 x- C0 x6 i  |  T# l
- (b) can a suitable conductivity meter with a measurement frequency in the range 1 kHz to 2 kHz
9 L" L$ }9 p/ m% ?0 jbe used; or: f9 R: ^/ V* B5 c; W
- (c) can any suitable conductivity meter (different measurement range) be used.1 Z1 A4 u2 [9 V; w
Decision:
8 H1 d: `2 V( ]. rThe Group decided that the “use of any appropriate conductivity meter with sufficient accuracy and4 H! `5 I0 _# K$ E$ C- H! a
uncertainty including the probe” is the only practical one - item (c) above.$ U( O4 n6 R. n* i

9 E1 B; |. K# z$ s5 y6 f! m# d" W1 z$ k# Y* Q: n4 d/ f, a( ?

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册安规

x
您需要登录后才可以回帖 登录 | 注册安规

本版积分规则

关闭

安规网为您推荐上一条 /1 下一条

QQ|关于安规|小黑屋|安规QQ群|Archiver|手机版|安规网 ( 粤ICP13023453-10 )

GMT+8, 2024-3-28 21:47 , Processed in 0.195233 second(s), 22 queries .

Powered by Discuz! X3.2

© 2001-2013 Comsenz Inc.|广东安规赞助

快速回复 返回顶部 返回列表