1、探头清洁：利用附送的防护罩防止灰尘、水汽、油脂阻塞探头，在使用本仪器前，均要检查探头和防护罩确无灰尘或油脂。
1, probe cleaning: use the attached protective cover to prevent dust, water vapor and grease blockage probe. Before using this instrument, we must check the probe and protective cover without dust or grease.
（1）拉下防护罩
(1) pull down the protective cover
（2）用工业毛巾或压缩空气清洁防护罩。
(2) use industrial towels or compressed air to clean the protective cover.
（3）如果探头本身也脏，可浸入像酒精等温和清洗剂几秒钟，然后用压缩空气或工业毛巾清洁，严禁用像汽油、松节油、矿物油等溶剂，这样易降低仪器灵敏度。
(3) if the probe itself is dirty, it can immerse in alcohol like isothermal and cleaning agent for a few seconds, then use compressed air or industrial towels to clean, and strictly prohibit using gasoline, turpentine, mineral oil and other solvents, so that the sensitivity of the instrument can be reduced easily.
2、探头更换：探头终总要失效，需更换。由于探头寿命直接和使用条件和频次相关，因此较难预计准确的更换时间。当在清洁、纯净空气中报警或不稳定时，应更换探头，具体探头步骤是如下：
2, probe replacement: the probe will eventually fail and need to be replaced. As the lifetime of the probe is directly related to the conditions and frequency of use, it is difficult to predict the exact change time. When in the clean, pure air alarm or unstable, should replace the probe, the specific probe steps are as follows:
（1）确认本仪器处于关闭状态
(1) confirm that the instrument is in a closed state
（2）逆时针旋下旧探头
(2) turn down the old probe counterclockwise
（3）顺时针旋上包装箱中提供的备用探头。
(3) a standby probe provided in a clockwise spin up packing box.
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