Membrane type dissolved oxygen is the measure of oxygen dissolved in an aqueous solution. Polarographic measurement principle, the dissolution value depends on the temperature of the aqueous solution, pressure and salinity in solution. The meter uses a liquid crystal display for measuring and displaying DO and medium temperature values, with analog and digital signal outputs and control functions. DM2800 Specification Measure range 0-20mg/L,0-200%,0-400hPa,-10~60℃ Resolution 0.01mg/L,0.1%,1hPa Accuracy ±1.5%FS Temperature Type NTC 10k/PT1000 Auto A/manual H -10-60℃ Resolution； 0.1℃ Correction Correction accuracy ±0.5℃ Output Type 1 4-20mA output Max.loop resistance 750Ω Repeatblitiy ±0.5%FS Output Type 2 RS485 digital signal output Communication protocol Standard MODBUS-RTU(customizable) Power supply AC220V±10%50Hz/60Hz 5W Max 50Hz/60Hz Alarm relay AC250V,3A Relative humidity (10~85)%RH Operation temperature 0~60℃ Storage condition Temperature:15~65℃ Relative humidity:(5~95)%RH Dimension 100mm*100mm*150mm(H*W*D) Ingress protection IP54 Weight 0.65kg
