129464n sensing tube

U

Thread Starter

uzi

Would you please help me, what are most parameter to be concerned so our 129464n sensing tube have longer life time. Since the last 7 months we spend 6 pieces 129464n sensing tube to get stable UV sensing. It's happen since we disconnect the shutter and change the amp. to R7849. We have C7027 flame detector too. It work ok since Dec. 2000.
 
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