Expanding Frontiers in Water Quality and Ecological Monitoring
DianJiang Group is pleased to announce a strategic partnership with Precision Measurement Engineering (PME), a recognized manufacturer of highprecision environmental research instruments, as their authorized representative.
As a dedicated provider of ecological environmental monitoring, hydrology, and modern agricultural technologies, DianJiang Group integrates PME’s advanced instrumentation into its portfolio. This collaboration brings highresolution aquatic physical and biogeochemical monitoring solutions to universities, research institutes, and environmental agencies across the region.
About PME: Precision for Environmental Discovery
Founded in 1982 by a research professor from the University of California, San Diego, and headquartered in California, USA, PME operates with a clear vision:
"To design and manufacture reliable sensing devices that empower scientists and environmental experts with accurate, microscale aquatic data, providing the foundational science needed to address global water and climate challenges."
PME specializes in the development of highaccuracy, highfrequency, and lowpower sensors for water quality and physical parameters. Their instruments are recognized across the industry for longterm stability, innovative antibiofouling capabilities, and sustained performance in demanding underwater environments.
Core Technology & Applications: HighResolution Data for Aquatic Insights
PME’s product architecture directly addresses common challenges in aquatic research, such as data gaps caused by biofouling and the heavy maintenance requirements of traditional field deployments. Their technology serves critical sectors including oceanography, limnology, aquaculture, groundwater monitoring, and global carbon cycle research.
Key product lines include:
miniDOT® Dissolved Oxygen Recorder: A highly accurate, completely selfcontained submerged logger. Equipped with an automated mechanical wiper, it effectively minimizes biofouling on the optical sensor, ensuring driftfree continuous data during longterm field deployments—essential for studying primary productivity and respiration.
CFLUOR® Logger Series: Designed as a compact, lowpower, singleparameter logging solution that integrates seamlessly with advanced fluorescence and turbidity optics. It provides exceptional versatility for tracking chlorophyll a, bluegreen algae, fluorescing dissolved organic matter (fDOM), crude oil, and turbidity without the need for an expensive multiparameter sonde.
miniPAR® Underwater Photosynthetically Active Radiation Logger: Engineered specifically for underwater environments to record critical light data driving photosynthesis in aquatic plants and algae. When paired with the miniDOT®, it provides researchers with insights into ecosystem energy dynamics.
DianJiang Group: Your Trusted Partner in Ecological Monitoring
Since its inception, DianJiang Group has committed to introducing and implementing advanced environmental, hydrological, and agricultural monitoring technologies.
We provide more than equipment; our engineering teams deliver endtoend customized services—spanning system design, integration, field installation, calibration, and longterm maintenance support. From lysimeter installations to comprehensive ecological stations at national nature reserves, our fieldproven expertise ensures project success.
We are pleased to incorporate PME’s specialized instrumentation into our service network. By combining PME’s innovative technology with DianJiang Group’s localized technical support and distribution channels, we look forward to accelerating regional environmental research and contributing to scientific ecological conservation.
Contact Us for Technical Inquiries & Quotations
To explore PME product specifications, review application case studies, or request a customized system configuration, please contact the DianJiang Group technical team.