The portable ozone concentration analyzer LT-200D is an innovative ozone analysis instrument that is in small size, easy to install and cost-effective. The high-speed microprocessor is used for control, and the one-click zero correction operation can be realized.Conventional range is 0-50200mgL, measurement units are mgL and gm3, resolution is 0.01mgL, measurement accuracy is 2%FS, corresponding time≤20S, signal output is 4-20mA and RS-485.