Dissolved oxygen detector model: HM222-M69909 $r $n $r $n Dissolved oxygen detector $r $n Parameter name Range based on standard measurement error repeatability $r $nPH 6-9 GB/T 604-2002 ≤ 5% Lt; 0.5% $r $n Dissolved oxygen 0.1~12mg/L GB7489-87 ≤ 10% Lt; 0.5% $r $n Ammonia nitrogen 0.02~5mg/L HJ 535-2009 ≤ 5% lt;0.5%
Dissolved oxygen detector model: HM222-M69909
Dissolved oxygen detector
Parameter Name Range Based on Standard Measurement Error Repeatability
PH 6~9 GB/T 604-2002 ≤5% <0.5%
Dissolved oxygen 0.1~12mg/L GB7489-87 ≤ 10%<0.5%
氨氮 0.02~5 mg/L HJ 535-2009 ≤5% <0.5%
Nitrite 0.05~2mg/L GB7493-87 ≤ 5%<0.5%
Total alkalinity 0~300mg/L Literature ≤ 5% ≤ 2%
Hydrogen sulfide 0.01~2mg/LGB/T16489-1996 ≤ 5%<0.5%
Salinity 1.00-1.060 0.001 0.002
Phosphate 0.01~10mg/L GB/T5750.5-2006 ≤ 5%<0.5%
Total hardness 0~10000mg/L GB 7477-87 ≤ 5% ≤ 2%
Water temperature -50-85 ℃± 1% ≤ 0.1
residual chlorine
0.04~15mg/L HJ586-2010 GB/T 5750.11-2023≤5%<0.5%
Dissolved oxygen detector model: HM222-M69909
Portable water quality detector
Accurately analyze the condition of water bodies and prevent breeding risks in advance
PH dissolved oxygen, ammonia nitrogen, nitrite, total alkalinity, residual chlorine, water temperature
Dissolved oxygen detector model: HM222-M69909
Multi domain applicability
Suitable for pure water plants, waterworks, domestic sewage treatment plants, industrial wastewater, aquaculture, river monitoring, swimming venues, water source protection, scientific research experiments, etc.
Android operating system
Android system, easy and fast to operate
3.5-inch touch screen display, replacing traditional buttons, detection results,
WIFI networking
Supports WIFI, can upload to cloud platform, and the test results can be directly transmitted to the supervision platform.




