main technical indexes:
1. measurement range:
dissolved oxygen :(0.0 ~ 20.0)mg/l
temperature (0 ~ 40 ° c)
2. basic error:
dissolved oxygen: plus or minus 0.3mg/l
temperature: 1 ° c for
3. residual current: not greater than 0.15mg/l
4. response time: not more than 30 s (20 ° c at 90% response)
5. automatic temperature compensation scope: (0 ~ 40 ° c)