JJG(冀) 062-2023 工業(yè)電導(dǎo)率儀檢定規(guī)程

河

北

省

地

方

計

量

檢

定

規(guī)

程冀)

062—2023工業(yè)電導(dǎo)率儀Industry

Conductivity

2023

-

08

-

發(fā)布 2023

-

11

-

實施

發(fā)

布JJG（冀）

2023Verification

ofIndustry

Conductivity

歸

口

單

河北省市場監(jiān)督管理局主要起草單位：

河北省計量監(jiān)督檢測研究院參加起草單位：

河北省計量檢測技術(shù)中心河北科瑞達(dá)儀器科技股份有限公司本規(guī)范委托主要起草單位負(fù)責(zé)解釋JJG（冀）

2023張 楊 雪

(河北省計量檢測技術(shù)中心)任 參加起草人：王 郝立輝（河北科瑞達(dá)儀器科技股份有限公司）郝拴菊（河北科瑞達(dá)儀器科技股份有限公司）JJG（冀）

2023 ········································································································（） ··································································································· ····························································································· ··································································································· ······················································································· ······················································································· ·················································································· ··························································································· ······················································································· ··························································································· ························································································ ··························································································· ··························································································· ····················································································· ···························································································

····················································

·········································································

··········································（11）IJJG（冀）

2023 1001-2011

1002-2010

1059.

1-2012

GB/TGB/TJB/T《發(fā)電廠在線化學(xué)儀表檢驗規(guī)程》中的部分內(nèi)容。JJG在“概述”中增加了“儀器的組成”（見根據(jù)最新版本引用文件，文中的電導(dǎo)、電導(dǎo)率、電導(dǎo)池常數(shù)分別采用cellJJGIIJJG（冀）

2023本規(guī)程適用于工業(yè)電導(dǎo)率儀的首次檢定、后續(xù)檢定和使用中檢查。

GB/T

GB/T

JB/T

發(fā)電廠在線化學(xué)儀表檢驗規(guī)程凡是注日期的引用文件，僅注日期的版本適用于本規(guī)范；凡是不注日期的引用文件， 儀器的檢定項目和計量性能應(yīng)符合表的規(guī)定。儀器按照電子單元引用誤差的檢定結(jié)儀器的銘牌應(yīng)清晰完整，標(biāo)明其名稱、規(guī)格型號、出廠編號、制造廠名、出廠日期。 1計量性能儀器級別0.5級1.0級1.5級2.0級2.5級電子單元檢定電子單元引用誤差（%FS）±0.5±1.0±1.5±2.0±2.5電子單元重復(fù)性（）≤0.2≤0.3≤0.5≤0.7≤0.8電導(dǎo)池常數(shù)示值誤差（cm

）±0.005±0.010±0.010±0.010±0.020溫度系數(shù)示值誤差（%℃

）±0.08±0.15±0.15±0.15±0.30示值穩(wěn)定性（%FS/1.5h）±0.25±0.5±0.75±1.0±1.25整機(jī)檢定儀器引用誤差（%FS）±0.8±1.5±2.0±2.5±3.0儀器示值重復(fù)性（）≤0.4≤0.7≤1.0≤1.2≤1.5溫度測量示值誤差（℃）±0.4±0.6±0.8±1.0±1.2序號檢定項目檢定類別首次檢定后續(xù)檢定使用中檢查1電子單元引用誤差（%FS）+++電子單元重復(fù)性（）+++表

表

2 檢定項目一覽表2JJG（冀）

2023表

1 計量性能要求表

1 計量性能要求 220±2250±1，或滿足儀器說明書要求。 準(zhǔn)確度等級滿足

級的溶液電導(dǎo)模擬裝置可滿足各級別工業(yè)電導(dǎo)率儀電子單元的檢定

。或使用氯化鉀電導(dǎo)率固體

，均勻性不大于

，波動度不超過

序號檢定項目檢定類別首次檢定后續(xù)檢定使用中檢查電導(dǎo)池常數(shù)示值誤差（cm

）+++溫度系數(shù)示值誤差（%℃

）++示值穩(wěn)定性（%FS/1.5h）+-儀器引用誤差（%FS）+++儀器示值重復(fù)性（）+++溫度測量示值誤差（℃）+++注：表中“+”表示應(yīng)檢定；“-”表示可不檢定。JJG（冀）

2023 設(shè)置條件：按圖所示接線，將電子單元溫度系數(shù)設(shè)置為法手動設(shè)置溫度系數(shù)的儀器可用溫度補(bǔ)償模擬電阻調(diào)節(jié)，使溫度顯示為。調(diào)節(jié)電導(dǎo)

溶液電導(dǎo)模擬裝置溫度補(bǔ)償模擬電阻圖

1 電子單元檢定接線示意圖 sscellRsMM

3注：僅首次檢定時測量溫度系數(shù)α為

1.50%

℃

、2.50%

℃

的示值誤差。JJG（冀）

2023注：僅首次檢定時測量溫度系數(shù)α為

1.50%

℃

、2.50%

℃

的示值誤差。s100μS

M

s

100μSMR

scellL=0.8×

MLKH

。取K

MLMHcellLcellH注：對于無常數(shù)調(diào)節(jié)或顯示功能的儀器可免檢此項。 s

，在每一個溫度系數(shù)下，通過調(diào)節(jié)溫度補(bǔ)償模擬電阻，

MV。以絕對值最大者作為溫度系數(shù)示值誤差的檢定結(jié)果。R-1-14Kcell

=Kcell+KcellJJG（冀）

2023Kcell

=Kcell+Kcells

100μSs015minmax0

器可用溫度補(bǔ)償模擬電阻調(diào)整，使溫度顯示為。在儀器測量范圍內(nèi)分別選擇兩種標(biāo)R

M

2

Kcell

2

M

機(jī)

M

s1

注：對于電導(dǎo)池常數(shù)為

注：對于電導(dǎo)池常數(shù)為

和

0.1cm

的電極，須在密封且溶液流動的狀態(tài)下測量。

S

和被檢儀器示值M

，分別記錄三次并計算平均值，按式（

機(jī)

M

被檢儀器三次測量結(jié)果的平均值，5JJG（冀）

2023

次，按式（RS1M分別控制恒溫裝置的溫度為，重復(fù)上述步驟，計算對應(yīng)溫度的示值誤差。注：僅首次檢定時測量溫度和的示值誤差。）條件下，待溫度示值顯示穩(wěn)定后，同時讀取精S2M

6溶液編號標(biāo)準(zhǔn)溶液

KCLg

溶液（

室溫）電導(dǎo)率

?

cm

)15°C18°C20

°C25°C35°C174.24570.092120.

097800.

1017027.43650.0104550.0128520.01535330.74400.00122000.00127370.

00140830.00168764將

3

稀釋至

1000mL0.

00012670.0013220.00014650.0001765JJG（冀）

2023附錄

A電導(dǎo)率標(biāo)準(zhǔn)溶液濃度及其電導(dǎo)率值注：應(yīng)用上述標(biāo)準(zhǔn)溶液時必須遵守如下條件：1 表中所列標(biāo)準(zhǔn)值扣除了配制標(biāo)準(zhǔn)溶液的水的電導(dǎo)率。電導(dǎo)率標(biāo)準(zhǔn)溶液濃度及其電導(dǎo)率值注：應(yīng)用上述標(biāo)準(zhǔn)溶液時必須遵守如下條件：2 電導(dǎo)率固體標(biāo)準(zhǔn)物質(zhì)在

下烘烤

后才能配制標(biāo)準(zhǔn)溶液。3 按照規(guī)定的環(huán)境條件配制電導(dǎo)率標(biāo)準(zhǔn)溶液。4 推薦使用

A

級

1000mL

容量瓶、分度值為

0.1mg

的天平。7檢定使用的計量標(biāo)準(zhǔn)裝置名

稱測量范圍不確定度/準(zhǔn)確度等級/最大允誤差計量標(biāo)準(zhǔn)證書號有效期至檢定使用的主要計量標(biāo)準(zhǔn)器和配套設(shè)備名

稱規(guī)格型號測量范圍出廠編號/設(shè)備號不確定度/準(zhǔn)確度等級/最大允誤差溯源證書號有效期至上級溯源機(jī)構(gòu)量程標(biāo)準(zhǔn)電導(dǎo)率S測量值M誤差Δ引用誤差

客戶名稱客戶地址檢定地點儀器型號出廠編號制造單位檢定日期檢

定

員核

驗

員溫

度相對濕度檢定依據(jù)結(jié)

論證書編號JJG（冀）

2023附錄

B檢定原始記錄示例1

通用技術(shù)要求：2

K： cm，參考溫度

T檢定原始記錄示例1

通用技術(shù)要求：2.1 2.1 電子單元引用誤差：

電導(dǎo)率（μS

?

cm）標(biāo)定量程

κF溶液標(biāo)準(zhǔn)值

κS儀器測量值

κM1或

κM2電導(dǎo)池常數(shù)(

)1

或2123測量量程κF溶液量程κF電導(dǎo)率平均值引用誤差(%)123無溫補(bǔ)時的電導(dǎo)率

κ溫度系數(shù)設(shè)定值

α(%℃

)溫度示值T電導(dǎo)率測量值

κ溫度系數(shù)實際值(%℃

)溫度系數(shù)示值誤差△α(%℃

)量程

儀器測量值

K起始值0穩(wěn)定性儀123456K對應(yīng)電導(dǎo)率κ(μS·cm

)電導(dǎo)池常數(shù)設(shè)定值(cm

)K/K電導(dǎo)率測量值κ

(μS·cm

)電導(dǎo)池常數(shù)實際值(cm

)電導(dǎo)池常數(shù)示值誤差△K(cm

)標(biāo)準(zhǔn)電導(dǎo)率

量程

測量值

標(biāo)準(zhǔn)偏差s重復(fù)性s123456JJG（冀）

20232.2

電子單元重復(fù)性2.3

電導(dǎo)池常數(shù)示值誤差：2.2

電子單元重復(fù)性2.3

電導(dǎo)池常數(shù)示值誤差：2.4

溫度系數(shù)示值誤差：2.5

儀器示值穩(wěn)定性（）3

整機(jī)檢定：3.1

引用誤差

a)設(shè)定值測量次數(shù)標(biāo)準(zhǔn)溫度計示值

T

或標(biāo)準(zhǔn)電導(dǎo)率溫度示值

T被檢儀器溫度示值

T溫度示值誤差

ΔT示值誤差平均值123123123參考量程κ測量值κ平均值引用誤差

(%)測量量程κ測量值κ平均值量程儀器測量值平均值

M標(biāo)準(zhǔn)偏差

s重復(fù)性123456JJG（冀）

2023引用誤差b)3.2

引用誤差b)3.2

儀器示值重復(fù)性3.3

溫度示值誤差

（℃）JJG（冀）

2023附錄

C檢定證書/C.1 C.1.1 C.1.2C.1.2.1C.1.