[分享]可燃气体报警器使用注意事项

老郁

<p class="MsoNormal" align="center" style="MARGIN: 0cm 0cm 0pt; TEXT-ALIGN: center; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto;"><b><span style="FONT-SIZE: 15pt; COLOR: red; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New Roman'; mso-hansi-font-family: 'Times New Roman'; mso-bidi-font-size: 12.0pt;"><font color="#000000" size="3">可燃气体报警器使用注意事项</font></span></b><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;"><font face="宋体" color="#333333"></font></span></span></p><p class="MsoNormal" align="left" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; TEXT-ALIGN: left; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;"><font color="#333333"><font face="宋体">为了使可燃气体报警器正常工作，有效发挥其预警作用，安装、使用过程中应注意以下几个方面：<span lang="EN-US"></span></font></font></span></span></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20.1pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><b><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">1</span></b></span><span class="hottext1"><b><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">．安装报警回路时应注意的问题</span></b></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(1)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">报警器的周围不能有对仪表工作有影响的强电磁场<span lang="EN-US">(</span>如大功率电机、变压器等<span lang="EN-US">)</span>，如果无法避开，应采取屏蔽措施。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(2)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">报警显示仪是安全仪表，有声、光显示功能，应安装在工作人员易看到听到的地方，以便及时了解情况。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(3)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">报警显示仪安装高度一般在<span lang="EN-US">1</span>．<span lang="EN-US">6</span>～<span lang="EN-US">1</span>．<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="7" unitname="m"><span lang="EN-US">7m</span></chmetcnv>为宜，便于维修人员对报警器进行日常修理和维护工作。<span lang="EN-US"></span></span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20.1pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><b><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">2</span></b></span><span class="hottext1"><b><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">．探头的安装应注意的问题</span></b></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(1)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">探头主要是用接触燃烧气敏传感器<span lang="EN-US">(</span>也称热线式传感器<span lang="EN-US">)</span>的检测元件，该元件是由铂丝线圈上包氧化铝和粘合剂组成球状，其上表面附有铂、钯等稀有金属。安装时一定要轻拿、轻放，以免摔坏探头。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(2)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">被测气体的比重不同，探头的安装位置也不同。室内探头的安装：被测气体的密度小于空气的密度时，应安装在距屋顶<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="30" unitname="cm"><span lang="EN-US">30cm</span></chmetcnv>处，探头向下；反之，被测气体的密度大于空气密度时，探头要安装在距地面<chmetcnv wst="on" tcsc="0" numbertype="1" negative="False" hasspace="False" sourcevalue="30" unitname="cm"><span lang="EN-US">30cm</span></chmetcnv>处。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(3)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">露天探头的安装：可根据被测气体的密度情况选择安装高度。特别应注意，探头要装在下风侧。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(4)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">探头应安装在可能泄露点附近，且尽可能接近。特别是可燃气体易积聚的死角<span lang="EN-US">(</span>地坑、排污沟等<span lang="EN-US">)</span>，一定要安装探头，并要避免风直接吹探头。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(5)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">连接电缆要穿保护套管。在探头的接线处加金属软管，并注意防爆标志等级与工厂防爆要求一致。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(6)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">安装调试后，一定要装透气防水罩，以防雨水进入探头而损坏。透气防水罩要定期取下清洗，保证可燃气体正常扩散进入探头。<span lang="EN-US"></span></span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20.1pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><b><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">3</span></b></span><span class="hottext1"><b><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">．校验时应注意的问题</span></b></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(1)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">要采用经计量认证的与被监测气体相匹配的标准样气。不同的测量介质，所选的标准样气不同，报警点也不同。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(2)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">校验前，探头的周围环境中应无可燃气体。若有，先拆下防雨罩，充入一定量的洁净空气，调整好零点后，再连续通入样气，以保证校验的准确性。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(3)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">当被测气体为烃类混合物时，异丁烷为首选样气，其次为丙烷。</span></span></font></font></p><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 20pt; mso-margin-top-alt: auto; mso-margin-bottom-alt: auto; mso-char-indent-count: 2.0;"><font color="#333333"><font face="宋体"><span class="hottext1"><span lang="EN-US" style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">(4)</span></span><span class="hottext1"><span style="FONT-SIZE: 10pt; LETTER-SPACING: 0pt;">对于被检测可燃气体组分复杂或不易得到相对应的标准样气的可燃气体，可使用：丁烷、异丁烷、丙烯等既易得又稳定的单组分燃气作为检定样气。此时必须依据一定的检测信号换算关系调整报警器的量程。<span lang="EN-US"></span></span></span></font></font></p>