DR820 Multi parameter water quality analyzerDetailed product description：

Technical specifications of DR820 multi parameter water quality analyzer:

Wavelength range: DR820 type: 520nm
Wavelength accuracy: ± 1 nm
Luminous measurement range: 0-2A
Wavelength selection: automatic selection
Reading mode:% transmittance, absorbance, concentration
External output: IR (input to RS232 serial port via infrared using a data transfer adapter)
Battery power supply: 4 No. 5 alkaline batteries
Instrument weight: 470 g
Environmental requirements: 0 to 50 ℃, 90% relative humidity, no condensation phenomenon