Dew Point Measurement & RL Dew Point Meter Series
The dew point in the air can be directly detected using a dew point meter. Air in normal pressure environment, indoor atmosphere, and outdoor atmosphere all fall within the scope of regular measurement targets for a dew point meter. The dew point is the temperature at which water vapor in the gas reaches saturation and condenses. Through a dew point meter, the dry and wet conditions of the air can be visually read, and parameters such as ppm moisture content and absolute humidity can be calculated and converted. It is widely used in workshop environment monitoring, compressed air inspection, laboratory environment monitoring, etc. The measurement of ambient air mainly includes two methods: static direct measurement and sampling measurement. During static air measurement, the probe of the dew point meter is exposed to the air to be measured, avoiding interference sources such as steam, water accumulation, and direct sunlight. After powering on and preheating for 1-3 minutes, the dew point value can be recorded when the reading stabilizes; if it is the air in a pipeline, a sampling pipeline needs to be set up, controlling the sample gas flow rate at 0.2-0.5L/min, thoroughly blowing the pipeline to replace residual water vapor, and waiting for the reading to stabilize before completing the measurement. During the measurement process, it is necessary to distinguish between normal pressure dew point and pressure dew point. Dust and oil mist in the air can contaminate the sensor, causing measurement drift, and at the same time, avoid the air to condense prematurely to ensure the authenticity and reliability of the measurement data. Xi'an Runlai Instrumentation Co., Ltd. is a source manufacturing enterprise specializing in the research, production, sales, and technical services of gas analysis instruments. It is located in Xixian New District and has standardized production workshops and a professional R&D team. It has the capabilities of self-developing sensors, complete machine production, and customizing complete analysis systems. It has obtained multiple certifications such as ISO9001 quality system, explosion-proof, CE, etc. It is a specialized and innovative technology enterprise in the field of gas analysis in China. Its products cover dew point meters, oxygen analyzers, infrared multi-component analyzers, laser gas monitoring equipment, and various process analysis systems. The products serve many industries such as chemical industry, air separation, heat treatment, power, lithium battery, pharmaceuticals, and laboratories. At the same time, it supports overseas project supply. .
Complete Product Line Coverage
The RL Dew Point Meter product line is complete, covering handheld, portable, online, and explosion-proof types. It can meet the detection of trace moisture in various gases such as ambient air, compressed air, nitrogen, argon, and natural gas. It is also suitable for atmospheric air dew point detection. The RL-DPH300 handheld dew point meter adopts the thin-film capacitive ceramic sensing principle. The body is small and portable, suitable for on-site inspection. It can directly measure the air dew point in indoor and outdoor atmospheric environments and has built-in temperature compensation to reduce errors caused by environmental temperature fluctuations. It has a color screen with Chinese menus, simultaneously displaying dew point temperature, ppm moisture, and absolute humidity. No manual table lookup is required. The operation is simple, suitable for on-site inspection in workshops and warehouse air humidity monitoring, etc.
RL-B300 Portable Dew Point Analyzer
The RL-B300 portable dew point analyzer is a commonly used model for laboratory and on-site sampling measurement. The measurement range is selectable from -100℃ to +20℃, with a resolution of up to 0.01℃, repeatability ≤ ±1℃, T90 response time ≤ 5 minutes. It has a built-in data storage function, capable of saving thousands of measurement records. It supports RS485 data communication and can be connected to the upper computer. The instrument is equipped with a stable flow gas path system, which can stabilize the sample gas flow during air measurement, reducing reading fluctuations caused by air flow disturbances. In addition to air environment detection, it can also be used for air separation, nitrogen generation equipment, and trace moisture detection in heat treatment protection gas. It is the main model for on-site detection of air dew point.
Explosion-Proof & Online Monitoring
For hazardous working conditions with flammable and explosive gases, RL has launched the RL-E300Ex explosion-proof dew point analyzer, with ExdIICT6 explosion-proof grade and IP65 protection housing. It is suitable for ambient air and process gas dew point monitoring in chemical plants and natural gas areas. It has a touch Chinese operation interface, supports dew point over-limit sound and light alarm, and allows custom alarm thresholds. It ensures long-term safe monitoring in hazardous areas. The online RL-U300 and RL-S300 intelligent dew point meters are suitable for 24-hour continuous monitoring. They can continuously monitor the dew point of factory environment air and compressed air pipelines, outputting 4-20mA and RS485 signals to connect to the DCS control system, achieving unmanned online monitoring. The instrument is equipped with automatic data recording, facilitating process traceability and auditing. It is widely used in glove boxes, drying rooms, kilns, biogas carbon dioxide removal devices, etc., for real-time monitoring of gas moisture, protecting core equipment such as molecular sieves, membrane components, and furnace bodies from water vapor-induced process failures and equipment wear.
Sensors, Support & Solutions
The RL Dew Point Meter selects high-performance ceramic thin-film humidity sensors. The sensors have strong anti-interference ability and good long-term stability, with a long overall lifespan. The accompanying pre-treatment components can filter dust and oil mist, reducing the pollution of impurities in the air to the sensors, and extending the sensor's service life. The company provides a complete set of technical support, including working condition scheme selection, on-site installation guidance, instrument calibration, and after-sales maintenance services. It can customize the measurement range, gas path, and communication method according to the user's working conditions. Whether it is simple indoor air dew point inspection or industrial pipeline, explosion-proof area, or high-precision air trace moisture monitoring in laboratories, the full series of RL dew point meters can provide stable and reliable measurement solutions, helping users accurately grasp the air moisture state and ensuring stable production processes and safe equipment operation.The dew point in the air can be directly detected using a dew point meter. Air in normal pressure environment, indoor atmosphere, and outdoor atmosphere all fall within the scope of regular measurement targets for a dew point meter. The dew point is the temperature at which water vapor in the gas reaches saturation and condenses. Through a dew point meter, the dry and wet conditions of the air can be visually read, and parameters such as ppm moisture content and absolute humidity can be calculated and converted. It is widely used in workshop environment monitoring, compressed air inspection, laboratory environment monitoring, etc. The measurement of ambient air mainly includes two methods: static direct measurement and sampling measurement. During static air measurement, the probe of the dew point meter is exposed to the air to be measured, avoiding interference sources such as steam, water accumulation, and direct sunlight. After powering on and preheating for 1-3 minutes, the dew point value can be recorded when the reading stabilizes; if it is the air in a pipeline, a sampling pipeline needs to be set up, controlling the sample gas flow rate at 0.2-0.5L/min, thoroughly blowing the pipeline to replace residual water vapor, and waiting for the reading to stabilize before completing the measurement. During the measurement process, it is necessary to distinguish between normal pressure dew point and pressure dew point. Dust and oil mist in the air can contaminate the sensor, causing measurement drift, and at the same time, avoid the air to condense prematurely to ensure the authenticity and reliability of the measurement data. Xi'an Runlai Instrumentation Co., Ltd. is a source manufacturing enterprise specializing in the research, production, sales, and technical services of gas analysis instruments. It is located in Xixian New District and has standardized production workshops and a professional R&D team. It has the capabilities of self-developing sensors, complete machine production, and customizing complete analysis systems. It has obtained multiple certifications such as ISO9001 quality system, explosion-proof, CE, etc. It is a specialized and innovative technology enterprise in the field of gas analysis in China. Its products cover dew point meters, oxygen analyzers, infrared multi-component analyzers, laser gas monitoring equipment, and various process analysis systems. The products serve many industries such as chemical industry, air separation, heat treatment, power, lithium battery, pharmaceuticals, and laboratories. At the same time, it supports overseas project supply. .
The RL Dew Point Meter product line is complete, covering handheld, portable, online, and explosion-proof types. It can meet the detection of trace moisture in various gases such as ambient air, compressed air, nitrogen, argon, and natural gas. It is also suitable for atmospheric air dew point detection. The RL-DPH300 handheld dew point meter adopts the thin-film capacitive ceramic sensing principle. The body is small and portable, suitable for on-site inspection. It can directly measure the air dew point in indoor and outdoor atmospheric environments and has built-in temperature compensation to reduce errors caused by environmental temperature fluctuations. It has a color screen with Chinese menus, simultaneously displaying dew point temperature, ppm moisture, and absolute humidity. No manual table lookup is required. The operation is simple, suitable for on-site inspection in workshops and warehouse air humidity monitoring, etc.
The RL-B300 portable dew point analyzer is a commonly used model for laboratory and on-site sampling measurement. The measurement range is selectable from -100℃ to +20℃, with a resolution of up to 0.01℃, repeatability ≤ ±1℃, T90 response time ≤ 5 minutes. It has a built-in data storage function, capable of saving thousands of measurement records. It supports RS485 data communication and can be connected to the upper computer. The instrument is equipped with a stable flow gas path system, which can stabilize the sample gas flow during air measurement, reducing reading fluctuations caused by air flow disturbances. In addition to air environment detection, it can also be used for air separation, nitrogen generation equipment, and trace moisture detection in heat treatment protection gas. It is the main model for on-site detection of air dew point.
For hazardous working conditions with flammable and explosive gases, RL has launched the RL-E300Ex explosion-proof dew point analyzer, with ExdIICT6 explosion-proof grade and IP65 protection housing. It is suitable for ambient air and process gas dew point monitoring in chemical plants and natural gas areas. It has a touch Chinese operation interface, supports dew point over-limit sound and light alarm, and allows custom alarm thresholds. It ensures long-term safe monitoring in hazardous areas. The online RL-U300 and RL-S300 intelligent dew point meters are suitable for 24-hour continuous monitoring. They can continuously monitor the dew point of factory environment air and compressed air pipelines, outputting 4-20mA and RS485 signals to connect to the DCS control system, achieving unmanned online monitoring. The instrument is equipped with automatic data recording, facilitating process traceability and auditing. It is widely used in glove boxes, drying rooms, kilns, biogas carbon dioxide removal devices, etc., for real-time monitoring of gas moisture, protecting core equipment such as molecular sieves, membrane components, and furnace bodies from water vapor-induced process failures and equipment wear.
The RL Dew Point Meter selects high-performance ceramic thin-film humidity sensors. The sensors have strong anti-interference ability and good long-term stability, with a long overall lifespan. The accompanying pre-treatment components can filter dust and oil mist, reducing the pollution of impurities in the air to the sensors, and extending the sensor's service life. The company provides a complete set of technical support, including working condition scheme selection, on-site installation guidance, instrument calibration, and after-sales maintenance services. It can customize the measurement range, gas path, and communication method according to the user's working conditions. Whether it is simple indoor air dew point inspection or industrial pipeline, explosion-proof area, or high-precision air trace moisture monitoring in laboratories, the full series of RL dew point meters can provide stable and reliable measurement solutions, helping users accurately grasp the air moisture state and ensuring stable production processes and safe equipment operation.
