Overview
The explosion-proof insertion humidity meter is a critical tool for industries operating in potentially explosive atmospheres. It combines a durable, sealed housing with precision sensors to deliver reliable humidity readings without spark risks. These devices are certified under international standards like ATEX or IECEx, ensuring compliance with safety regulations. Designed for direct insertion into pipelines or tanks, the meter minimizes exposure to external contaminants. Its robust construction typically includes stainless steel probes and explosion-proof enclosures, making it suitable for harsh conditions such as refineries or underground mining.
Structure and Working Principle
The meter consists of a humidity sensor (often capacitive or resistive), a signal transmitter, and an explosion-proof casing. The sensor measures moisture levels in the air or gas stream, converting this data into electrical signals. These signals are processed and transmitted to control systems via outputs like 4-20mA or Modbus. The explosion-proof design relies on flame-arresting components and sealed junctions to prevent ignition. For example, the housing may use threaded conduits to contain any internal sparks. Advanced models include self-diagnostic features to alert users to sensor degradation or calibration drift.
Key Features
Explosion-proof certification is the standout feature, with classifications like Zone 1/21 (gas/dust) under ATEX. The meters also offer high accuracy (±1.5% RH typical) and broad measurement ranges (0–100% RH). Temperature compensation ensures reliability across varying conditions. Additional features may include LCD displays with local readouts, configurable alarms, and compatibility with hazardous area communication protocols. Some models integrate temperature sensors for dual-parameter monitoring, reducing installation footprint in cramped spaces.
Application Areas
Primary applications include oil & gas facilities (e.g., LNG storage, drilling platforms), where humidity control prevents condensation-related corrosion. Chemical plants use these meters to monitor reactor atmospheres or drying processes. Other sectors include pharmaceuticals (cleanroom compliance), food processing (dehydration control), and power generation (turbine inlet air monitoring). In mining, they help manage ventilation systems to reduce methane explosion risks.
Maintenance and Precautions
Regular maintenance involves sensor cleaning to remove dust or chemical deposits, which can skew readings. Calibration every 6–12 months is recommended, using NIST-traceable standards. Always power down the device before servicing in hazardous zones. Avoid mounting near steam jets or aggressive chemicals that could degrade seals. Ensure cable glands remain tight to maintain explosion-proof integrity. Replace O-rings periodically to prevent moisture ingress.
B2B Procurement Guide
When sourcing, confirm the device’s certification matches your regional standards (e.g., ATEX for EU, UL for North America). Specify the required measurement range, accuracy, and output signals to align with your control systems. Request documentation like Declaration of Conformity and calibration certificates. Bulk orders may attract discounts; consider OEM options for custom probe lengths or materials. Lead times can extend to 8–12 weeks for specialized configurations.
Related Manufacturers
- 主营：烟气在线监测、雪迪龙 MODEL、西门子U23紫外烟气、烟气分析仪维修、西门子烟气分析仪、雪迪龙烟气分析仪、LDS6分析仪维修、粉尘浓度检测仪、烟气分析仪、雪迪龙1080、雪迪龙1080UV、脱硫脱硝、采样探头、探头滤芯、伴热管线、采样管线、蠕动泵、采样泵、电伴热带、国产蠕动泵、一体化温度变送器、计量泵、氮氧化物转换器、氧气传感器、气体传感器
- 主营：NTP 服务器、智能取纸机、电子看板、温湿度看板、防爆电子钟、客流统计摄像头、除臭机、计时器、有无人指示灯、同步时钟、数码时钟、智慧公厕、手术室时钟、led 显示屏、蹲位门头屏、厕位引导系统、考场时钟、医院时钟
- 主营：自动水质采样器、大气采样器、恒温恒湿称重系统、气体检测仪、水质检测仪、测距仪、油气回收检测仪、风速仪、湿球黑球温度指数仪、温湿度测试仪、烟尘烟气测试仪、红外测温仪、VOC气体检测仪、可燃气体浓度检测仪、声级计、尘埃粒子计数器、空气微生物采样器、全自动菌落计数器
- 主营：大气采样器、黑烟识别器、气体、流速流量仪、检测仪、林格曼黑度仪、数采仪、油气回收检测仪、风速仪、测温仪、测距仪、辐射仪、油烟检测仪、烟尘烟气分析仪、粉尘仪、重金属多参数水质检测仪、采样器、生物安全柜、天平、土壤、β射线扬尘、辐照计、在线自动水质采样器、恒温恒湿称重系统、噪声计
- 主营：捣固机、中继器、基地台、摄像仪、电磁阀、信号灯、传感器、接线盒、打磨机、输送机、显模块、凿岩机、切轨机、调节器、标识卡、变压器、控制器、保护器、调整机、手持机、控制箱、捣固镐、风速表、拨道机、破碎机
- 主营：核酸采样小屋、核酸采样工作站、水质采样器、气体检测仪、水质检测仪、激光粉尘仪、便携式自动水质采样器、便携式明渠流量计、voc气体检测仪、实验室仪器、大气采样器、恒温恒湿称重系统
- 主营：测温主机、测温分机、测温电缆、数字式测温线缆、地源热泵无线测温仪、数字式测温电缆、分布式温度感测电缆、数字测温电缆、无线测温电缆、手持多功能数显电表、手持电表、通用型数字万用表手持、光纤测温电缆、感温电缆测温电缆、平房仓测温电缆、感温光纤主机、双光纤测温电缆、测温电缆线、无线测控分机、粮库智能测控系统、粮食检测电子测温线、多点测温系统、屏蔽型测温线、温湿水一体测温电缆、屏蔽测温电缆
- 主营：培养箱、酸度计、蓝牙、分析仪、检测仪、报警仪、测量仪、风速仪、室内检测仪器、测定仪、振动检测分析仪、测试仪、浊度仪、称重系统、甲醛检测、声校准器、酸碱浓度计、流量计、采样器、消解器、机器人、环保第三方检测、环境检测、综合采样器、生物安全柜
- 主营：采样器、压力计、烟度计、分析仪、监测仪、检测仪、直读仪、速测仪、消解仪、报警仪、测油仪、溶解氧仪、水质测定仪、表面沾污仪、数字风速仪、智能采样仪、检测箱、流量计、传感器、车尾检测、流量校准器、恒温加热器、细菌培养箱、生物培养箱、火焰模拟器
- 主营：锚杆测力计、气动阻车器、锚杆扭矩放大器、大屏显示温湿度检测仪、司控道岔装置、局部通风机
- 主营：检测箱、外置泵、电磁兼容、黑度仪、场强仪、检测仪、风速仪、流速监测仪、紫外辐照仪、水质监测仪、黑球指数仪、风速测量仪、甲醛测试仪、电磁场测量仪、手持式抓拍仪、自动采样器、黑烟识别器、水质采样器、水质速测箱、明渠流量计、孔口流量计、微电脑控制器、微生物采样器、恒温恒湿设备、气溶胶采样器
- 主营：个人防护包、快检试剂、恒温恒湿称重系统、便携式五参数水质检测、便携式水质采样器、便携式多参数水质检测、便携式明渠流量计、激光测距仪、氨氮六价铬水质检测仪、油烟检测仪、烟尘烟气检测仪、便携式多气体检测仪、激光粉尘检测仪、风速仪、紫外辐射照度计
- 主营：浓度监、剂量计、天然气、分析仪、监测仪、报警仪、能谱仪、测量仪、水分仪、黑度仪、测汞仪、测定仪、农残仪、氮吹仪、水质分、半电池、接虫袋、流量计、浊度计、采样器、传声器、消解器、噪声计、酒石酸、硬度计
- 主营：黑体辐射源、黑体炉、干体炉、烟气分析仪、氧分析仪、测温仪、露点仪、傅里叶红外光谱仪、测温电桥
- 主营：矿用一氧化碳传感器、矿用甲烷传感器、矿用风速传感器、矿用温湿度传感器、矿用投入式液位传感器、矿用氧气传感器、矿用压力传感器、矿用二氧化碳传感器、矿用负压传感器、矿用风压传感器、矿用二氧化氮传感器、矿用差压传感器、矿用管道压力传感器、矿用二氧化硫传感器、矿用温度传感器、煤矿用激光甲烷传感器、开停传感器、矿用硫化氢传感器、矿用烟雾传感器、矿用双向风速传感器、矿用风速风向传感器、矿用氢气传感器、煤矿用低浓度甲烷传感器、煤矿用一氧化碳传感器