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INZ-TN2ZPG-E
6.7.1.3 Explanation of sample switch method
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Note) Switching time of the sample gas, measuring time of the sample gas, flow time of the
reference gas and flow time of the sample gas are updated automatically based on
following relational expression.
Switching time of reference gas : 1 to 30s (Initial value 5 sec)
Measuring time of reference gas : 1 to 60s (Initial value 5 sec)
Switching time of sample gas (t1) = Switching time of reference gas (t3)
Measuring time of sample gas (t2) = Measuring time of reference gas (t4)
Flow time of sample gas (Ts) = Flow time of reference gas (Tr)
Flow time of reference gas (Tr) =
Switching time of reference gas (t3) + measuring time of reference gas (t4)
Flow time of sample gas (Ts) =
Switching time of sample gas (t1) + measuring time of sample gas (t2)
1 cycle = flow time of reference gas (Tr) + flow time of sample gas (Ts)
DO26 contact
DO27 contact
measuring
position
Close
Open
Close
Open
1 cycle
Folw time of
reference gas
Folw time of
sample gas
Folw time of
sample gas
Folw time of
reference gas
Measuring time of
reference gas
Measuring time of
sample gas
Measuring time of
reference gas
Measuring time of
sample gas
(t4)
(t2)
(t4)
(t2)
(Tr)
(Ts)
(Tr)
(Ts)
