model: CAS40D ammonia nitrogen electrode
problem: Shenzhen Guangming District Baihua Sewage Station reported ammonia nitrogen electrode and CM442 communication failure.
On-site cause investigation: electrode water inflow
fault repair: disassemble the sheath of the electrode, blow it dry with a fan and then detect it. the problem is solved. CAS40D belongs to the ion selective electrode, and the inner electrode belongs to the assembled type and can be replaced. blow it dry basically.
Ayi Technology, your E H instrument expert.