ZRN-RY-80 dissolved oxygen meter ( portable) Use American original film head polarographic oxygen electrode. The electrode in addition to traditional platinum cathode, silver anode, there is a silver reference electrode, greatly improves the stability and accuracy of the zero signal stable long-term use of residual current drift is small meet ppm level measurement requirements fast response, built-in self -consumable electrode, self- consumed residual oxygen in the electrolyte .

Main Specifications:
1, measuring range : 0.00 ~ 19.99mg / L or 0.0 to 199.9%
2, Resolution : 0.01mg / L or 0.1%
3, salinity compensation : 0 ~ 50ppt
4, pressure compensation : 0 ~ 1000m
5, the working voltage : 9V DC power supply
6, the working conditions of the instrument :
① ambient temperature : 0 ~ 45 ℃
② air relative humidity : ≤80%
③ In addition to Earth's magnetic field around the outside no strong magnetic interference .