DB43-T 2315-2022 機(jī)動(dòng)車污染物排放測量用數(shù)字大氣壓溫濕度綜合儀性能檢測方法

ICS

01.040.19CCS

43湖 南省 地 方 標(biāo) 準(zhǔn)DB43/T

2315—2022機(jī)動(dòng)車污染物排放測量用數(shù)字大氣壓溫濕度綜合儀性能檢測方法Testing

methods

for

digital

atmospheric

temperatureand

humidity

synthesizer

for

emission

measurementof

pollutants

from

vehicles2022

-

05

-

06

發(fā)布

2022

-

-

實(shí)施湖南省市場監(jiān)督管理局

發(fā)

布DB43/T

2315—2022 前言························································································································

Ⅲ1 ·····················································································································

12規(guī)范性引用文件······································································································13 術(shù)語和定義············································································································14 檢測裝置及要求······································································································24.1 檢測裝置·········································································································24.2 檢測要求·········································································································25 檢測方法···············································································································25.1 外觀與結(jié)構(gòu)檢測································································································

25.2 溫度性能檢測···································································································35.3 相對濕度性能檢測·····························································································

35.4 大氣壓力性能檢測·····························································································

36 性能參數(shù)的計(jì)算······································································································36.1 溫度顯示值誤差································································································

36.2相對濕度顯示值誤差··························································································

36.3 大氣壓力顯示值誤差··························································································

37 檢測報(bào)告編寫要求···································································································4附錄

A

(資料性) 機(jī)動(dòng)車污染物排放測量用環(huán)境參數(shù)測量設(shè)備技術(shù)要求

·································5DB43/T

2315—2022 本文件按照

GB/T

—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第

1

部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)定起草。請注意本文件的某些內(nèi)容可能涉及專利。本文件的發(fā)布機(jī)構(gòu)不承擔(dān)識(shí)別專利的責(zé)任。本文件由湖南省市場監(jiān)督管理局提出并歸口。設(shè)備有限公司。澤、劉晨、唐海峰、易明星、李智才、王寧、逯文學(xué)。IIIDB43/T

—20221

能參數(shù)的計(jì)算、檢測報(bào)告編寫要求。本文件適用于機(jī)動(dòng)車污染物排放測量用數(shù)字大氣壓溫濕度綜合儀（以下簡稱綜合儀）的性能檢測。2

規(guī)范性引用文件文件。GB

3847—2018柴油車污染物排放限值及測量方法GB

18285—2018 汽油車污染物排放限值及測量方法QX/T

—2020 溫濕度儀檢定箱3

術(shù)語和定義QX/T

—2020

界定的以及下列術(shù)語和定義適用于本文件。為便于使用，以下重復(fù)列出了

QX/T

—2020

中的某些術(shù)語和定義。3.1數(shù)字大氣壓溫濕度綜合儀 digital

atmospheric

synthesizer具有同時(shí)顯示大氣壓力、氣體溫度、氣體濕度功能的數(shù)字化顯示儀表。3.2顯示值誤差 display

value

標(biāo)準(zhǔn)裝置在穩(wěn)定狀態(tài)下，綜合儀的溫度、濕度、大氣壓力顯示值與對應(yīng)的標(biāo)準(zhǔn)器顯示值的差值。3.3溫度均勻度

溫度試驗(yàn)箱在穩(wěn)定狀態(tài)下，在有效工作區(qū)內(nèi)周圍各點(diǎn)與中心點(diǎn)之間溫度差值絕對值的最大值。3.4濕度均勻度

uniformity濕度試驗(yàn)箱在穩(wěn)定狀態(tài)下，在有效工作區(qū)內(nèi)周圍各點(diǎn)與中心點(diǎn)之間濕度差值絕對值的最大值。3.5溫度波動(dòng)度

fluctuation溫度試驗(yàn)箱在穩(wěn)定狀態(tài)下，其有效工作區(qū)內(nèi)中心點(diǎn)在規(guī)定時(shí)間內(nèi)溫度變化的大小。3.6濕度波動(dòng)度

fluctuation濕度試驗(yàn)箱在穩(wěn)定狀態(tài)下，其有效工作區(qū)內(nèi)中心點(diǎn)在規(guī)定時(shí)間內(nèi)濕度變化的大小。DB43/T

—4

檢測裝置及要求4.1 檢測裝置4.1.1 溫度性能檢測裝置a）

標(biāo)準(zhǔn)器：數(shù)字溫度計(jì)，最大允許誤差為±0.05

℃，顯示分辨力

0.01

b）

配套設(shè)備：溫度試驗(yàn)箱，溫度范圍為（～）℃，溫度波動(dòng)度不超過±0.2

℃，溫度均勻度不大于

℃，溫度變化率不大于

0.2

℃/min。4.1.2 相對濕度性能檢測裝置a）

標(biāo)準(zhǔn)器：精密露點(diǎn)儀，露點(diǎn)溫度范圍為（-20～40）℃，最大允許誤差為±0.2

℃，具有相對濕度顯示功能，分辨力

％RH

及以上；b）

配套設(shè)備：濕度試驗(yàn)箱，濕度范圍為（～95）％RH，濕度波動(dòng)度不超過±0.8％RH，濕度均勻度不大于

1.0％RH，濕度變化率不大于

0.8％。4.1.3 大氣壓力性能檢測裝置a）

之一；b）

4.2 檢測要求4.2.1 外觀與結(jié)構(gòu)現(xiàn)象。綜合儀的控制和調(diào)節(jié)機(jī)構(gòu)應(yīng)靈活可靠，緊固件應(yīng)無松動(dòng)。4.2.2 溫度檢測％4.2.3 相對濕度檢測濕度試驗(yàn)箱內(nèi)溫度恒定在

20

25

℃，綜合儀放置于濕度試驗(yàn)箱內(nèi)，濕度試驗(yàn)箱技術(shù)指標(biāo)達(dá)到4.1.2

的要求。4.2.4大氣壓力檢測環(huán)境溫度控制在（20±1）℃，環(huán)境濕度≤85％RH。綜合儀在環(huán)境條件下放置

2

h

以上，才能進(jìn)行檢測。傳壓介質(zhì)可選用潔凈、干燥的空氣或氮?dú)猓划?dāng)選用氮?dú)鈱x器的性能存在影響時(shí)，應(yīng)選用空氣。檢測前應(yīng)對檢測系統(tǒng)進(jìn)行密封性檢查，由于漏氣造成的最大壓力差不得超過最大允許誤差的十分之一。5

檢測方法5.1 外觀與結(jié)構(gòu)檢測以目力觀察和手感檢查，應(yīng)符合

4.2.1

的要求。DB43/T

—20225.2溫度性能檢測將綜合儀的溫度傳感器與數(shù)字溫度計(jì)共置于溫度試驗(yàn)箱內(nèi)，并確保兩者盡可能靠近。溫度檢測點(diǎn)選擇-10

℃～

℃每間隔

℃一個(gè)點(diǎn)。按“升溫”或“降溫”的順序控制溫度試驗(yàn)箱中的溫度值，當(dāng)溫度值達(dá)到設(shè)定值后穩(wěn)定

10

，然后每隔

2

分別讀取數(shù)字溫度計(jì)和綜合儀的溫度測量值，共記錄

3

組數(shù)據(jù)。5.3 相對濕度性能檢測將綜合儀的濕度傳感器與精密露點(diǎn)儀傳感器共置于濕度試驗(yàn)箱內(nèi)，并確保兩者盡可能靠近。濕度檢測點(diǎn)選擇

30％RH～90％

每間隔

％

RH

一個(gè)點(diǎn)。設(shè)定濕度試驗(yàn)箱的濕度值，由低濕到高濕，當(dāng)濕度試驗(yàn)箱達(dá)到設(shè)定值后穩(wěn)定

10

min，然后每隔

2

分別讀取精密露點(diǎn)儀和綜合儀的濕度測量值，共記錄

3

組數(shù)據(jù)。5.4 大氣壓力性能檢測大氣壓力檢測點(diǎn)選擇（80～110）

5

一個(gè)點(diǎn)。從測量范圍下限點(diǎn)開始逐點(diǎn)升壓（或

15hPa讀取并記錄標(biāo)準(zhǔn)器和被檢大氣壓力計(jì)的顯示值。6

性能參數(shù)的計(jì)算6.1 溫度顯示值誤差溫度顯示值誤差按式（1）計(jì)算。t

tR-tS

???????????????????（1）式中：ttRtS

——綜合儀溫度顯示值誤差，℃；——綜合儀溫度顯示值平均值，℃；——數(shù)字溫度計(jì)顯示值平均值，℃。6.2 相對濕度顯示值誤差相對濕度顯示值誤差按式（2）計(jì)算。ΔH

H

R-H

S????????????????????（2）式中：ΔH

——綜合儀濕度顯示值誤差，％RH；H

R

——綜合儀濕度顯示值平均值，％RH；H

S ——精密露點(diǎn)儀顯示值平均值，％RH。6.3 大氣壓力顯示值誤差大氣壓力顯示值誤差按式（3）計(jì)算。

pR-pS

????????????????????（3）DB43/T

—式中： ——綜合儀大氣壓力顯示值誤差，；

——綜合儀正、反行程顯示值平均值，；——標(biāo)準(zhǔn)器正、反行程顯示值平均值，。7

檢測報(bào)告編寫要求檢測報(bào)告內(nèi)容應(yīng)包括但不限于：a）

概述：包括主機(jī)型號(hào)、規(guī)格、使用廠家、制造廠家、檢測日期、地點(diǎn)、檢測單位；b）

檢測參加人員，報(bào)告編寫人、審核人、批準(zhǔn)人；c）

檢測參照的標(biāo)準(zhǔn)；d）

檢測儀器及檢測方法；e）

檢測結(jié)果；f）

檢測時(shí)環(huán)境參數(shù)及其他需說明的條件。DB43/T

—2022附

錄 A（資料性）機(jī)動(dòng)車污染物排放測量用環(huán)境參數(shù)測量設(shè)備技術(shù)要求A.1柴油車污染物排放測量用環(huán)境參數(shù)測量設(shè)備技術(shù)要求A.1.1 大氣壓力測量設(shè)備在當(dāng)?shù)貙?shí)際海拔高度下，根據(jù)當(dāng)?shù)卮髿鈮毫Φ淖兓秶M(jìn)行檢定，大氣壓力測量準(zhǔn)確度應(yīng)在±1.0

kPa

以內(nèi)。A.1.2 環(huán)境溫度測量設(shè)備在-10

℃、0

20

30

40

℃的環(huán)境下，環(huán)境溫度的測量準(zhǔn)確度應(yīng)在±

℃以內(nèi)。A.1.3 濕度測量設(shè)