Products

Inline Oil Moisture Sensor with display screen ntroduction

Monitoring the moisture content in lubricating oil, hydraulic oil and transformer oil within large-scale continuous operation equipment and heavy machinery plays an indispensable

role in ensuring the normal operation of these critical systems.The presence of moisture can disrupt the oil film, render additives ineffective,cause corrosion of metal components, shorten the service life of the oil, and in severe cases, lead to unplanned shutdowns of large machinery, resulting in serious safety incidents and economic losses. For power generation unitsand transformers, moisture can degrade the insulating properties of oil,posing a threat to the safety of electrical equipment and personnel.

The Inline oil trace moisture sensor features a uniquely designed moisture sensing probe at its front end, which can real-time capture changes in the electrical

properties of oil-water mixtures. Combined with a high-precision temperature probe for data compensation and optimized algorithms, it accurately determines the moisture content in oil. The company's proprietary patented measurement technology enables precise monitoring of moisture content across multiple ranges.

HOPU Inline Oil Moisture Tester (Oil PPM Meter) is a high-precision industrial instrument designed for continuous real-time monitoring of dissolved moisture (ppm) and water activity (aw) in transformer oil, lubricating oil, hydraulic oil, and diesel fuel.

It features a spiral rod-type sensor with ±10% measurement accuracy (0–1000 ppm) and <1-minute fast response, enabling accurate, stable, and reliable moisture detection in harsh industrial environments.

This ISO9001:2015, UKCA, CE-certified online oil moisture meter directly measures water activity (aw) and temperature (T), then calculates absolute moisture content in ppm—critical for assessing oil quality, preventing insulation degradation, and extending equipment service life. With flexible installation (probe lengths customizable) and RS485 Modbus communication, it supports seamless integration into industrial monitoring systems for 24/7 condition monitoring.

Key Applications: Power transformers, hydraulic systems, lubrication circuits, fuel storage, and industrial machinery maintenance.

Note: The sensor is default calibrated using 25# transformer oil (custom oil samples can be calibrated upon request). Measurement accuracy requires that the test environment be maintained at 20±5℃ with a flow rate of 30±5ml/min.

About this supplier

Chongqing HOPU Filtration Plant Manufacture Co., Ltd. is a high-tech joint-stock enterprise restructured from HOPU Oil Purifier Factory and HOPU Oil Tester Factory. To cater to global export business, our production base consists of three separate workshops situated in distinct industrial parks, enabling us to develop highly customized equipment models tailored precisely to customers' practical application requirements. Our products have obtained authoritative international certifications including CE, UKCA, SGS and ISO9001. Focused on the R&D, production and global sales of oil processing equipment and turnkey oil treatment solutions, we supply customized services covering transformer oil filtering, hydraulic & turbine oil separation, lubricating oil purification as well as insulating oil regeneration to satisfy diversified liquid management demands. Besides, we keep abundant spare parts inventory for all HOPU oil purifier equipment, ranging from vacuum pumps, oil pumps and driving motors to connecting pipelines and various oil testing instruments. Our equipment has gained extensive application across numerous sectors such as electric power, power plants, power transmission engineering, metallurgy, petrochemicals, machinery manufacturing, railway, pulp & paper mills, injection molding workshops, compressor manufacturers as well as gear and turbine factories. Thanks to reliable product performance, our brand occupies considerable market share and is well-established as a reputable premium & mid-range supplier in the oil purification equipment industry.