HK-258A Portable Trace Dissolved Oxygen Analyzer, 0.1 µg/L-20.00 mg/L (CAT#: STEM-AL-4136-ZJF)

HK-258A Portable Trace Dissolved Oxygen Analyzer is designed for laboratory or field analysis of dissolved oxygen. The instrument measures dissolved oxygen using membrane-electrode electrochemical detection. The documented operating or measurement range is 0.1 µg/L-20.00 mg/L. Electronic control manages measurement, calculation, and display functions. The interface presents live readings, settings, and available status information. Specified analog, relay, or digital interfaces support integration with external systems where provided. Temperature compensation, calibration, alarm, cleaning, or storage functions are applied according to the model configuration. The sample path, sensor, or reaction module is arranged for the stated online, laboratory, or portable workflow. The instrument supports repeatable analysis within the documented sample and environmental limits.

Model: HK-258A
Detection Range: 0.1µg/ L-20.00mg/ L
Resolution: 0.1µg/ L
Sample Flow: 150-500mL/ min
Power Supply: 7
Dimensions: 164mm × 75mm × 17mm
Weight: 300g(、)
Response Time (T90):>22s
Temperature Sensor: NTC, measurementaccuracy0.1 °C

Temperature compensation supports measurement under changing sample conditions
Portable or battery-supported configuration enables field operation
Low-power design supports extended continuous operation
Purification stages support production of source-specified high-purity water
Source-defined measurement or operating range supports the intended workflow
Documented resolution and error limits support result evaluation
Specified sample and environmental conditions define operating boundaries