Online detection equipment can not run normally during the shutdown period because of the following reasons:

1, online monitoring equipment aging, drift serious.

2, online monitoring equipment actually in the sale and installation of reduced configuration and performance.

3, when used in poor working conditions, the failure rate is high, can not meet the monitoring requirements.

4, the owner is aware of the existence of problems, do not repair and replace.

5, online monitoring data can not respond to the production limitations and emissions reduction.