Dongguan Haimi is a professional miniature DC pump manufacturer with more than 10 years of product development and mass production experience, supplying reliable pumping components for global environmental instrument manufacturers, environmental testing labs and environmental monitoring station projects. Our pumps are widely used in ambient gas sampling equipment, online water quality detectors, waste water analysis devices, atmospheric monitoring sensors and portable environmental inspection instruments.
Environmental testing instruments put forward strict requirements for pump stability, corrosion resistance and long-term continuous operation. Most testing equipment needs to extract trace gas or sample wastewater for chemical analysis, which requires pumps to work stably under weak acid and weak alkaline medium within PH5~PH10. Our core diaphragm pump is tailor-made for gas & liquid sampling of environmental instruments; with low pulsation and stable airflow, it effectively guarantees the accuracy of detection data for monitoring equipment.
For water circulation and liquid delivery in online water quality analyzers, our DC water pump series becomes the standard matching component. Representative model HM6002-1 three-phase DC pump supports 12VDC~48VDC wide voltage input, built-in overvoltage, overcurrent, dry-run blocking protection and optional PWM /0-5V speed regulation. Adjustable rotating speed helps equipment designers precisely control sample liquid flow between 10~30 L/min, matching different test calibration standards of environmental analyzers. The maximum resistant liquid temperature reaches 75℃, suitable for constant-temperature water bath circulation of lab environmental testing devices.
Many field outdoor environmental monitoring stations adopt off-grid solar power supply. When customers configure outdoor unattended monitoring equipment, they can match our solar DC water pump to realize automatic water sample circulation without municipal power, greatly reducing later power layout cost for field monitoring projects. All Haimi pumps pass strict aging test and achieve continuous service life over 20000 hours under normal operating environment, lowering instrument failure rate and after-sales maintenance cost for environmental equipment factories.
Haimi provides full OEM and ODM customization including outlet direction adjustment, housing color modification and signal feedback function (FG signal). Our engineering team can recommend suitable pump specifications based on customers’ instrument internal layout, required flow and working medium characteristics.
May 04, 2026
