What are the consequences of air sampling with external filters?
In addition, by using the method of time delayed alarm to avoid false positives, because the alarm time is delayed, the same, the air sampling hole most distal in 120 seconds will be transmitted back to the detector. Therefore, the total length of the air sampling tube layout must be reduced to meet the national standards. Usually, the customer was also in the dark do not know the risk.
obviously, the total length of the air sampling tube layout must be shortened, in accord with the national standard. But we found that there are many manufacturers did not inform their customers have this problem, let the customer exposed to the risk of the expense.
d, in order to prevent the sampling hole due to pressure loss far too large and cause failure. According to the national standard, air sampling detector must be able to the air sampling hole most distal in 120 seconds sent back to the detector, and make the detection reaction, if the installation of an external filter,
The use of an external filter, obviously, will increase the resistance of the air air sampling, sample collection time becomes longer, so the total length of the air sampling tube layout must be shortened
