The sensor adopts high-precision electrochemical electrodes and adopts electrochemical measurement principle with high sensitivity and high precision. This product has the advantages of large range, good linearity, convenient observation, stability and reliability, and can be widely used in meteorology, ocean, environment, airports, ports, laboratories, industry, agriculture and transportation.   

Measuring range：0.04 ppm ~ 39000ppm

temperature range：-20°C to +50°C

PH range：2~12 PH

Accuracy：3%

Repeatability：±2%

Power supply：DC 5V

Peak current：79mA @ DC5V

Transfer Protocol：MODBUS RTU

Baud rate： 9600（stand by115200, 57600, 38400, 28800, 19200, 14400, 9600,4800, 2400, 1200，8N1）

Output Interface：RS485

Cable length：Standard 5 meters (maximum cable length 20 meters can be equipped)

working environment：temperature 0℃～50℃

                       humidity≤100%RH

Protection level：IP65

product weight：≤0.5kg