Swan Analytical Instruments AMI - Measuring Cycle at Continuous Measurement; AMI Sodium a and AMI Sodium P; Flush Time; Valid after

12 A-96.250.661 / 120418
AMI Sample Sequencer
Product Description
2.2. Measuring Cycle at Continuous Measurement
2.2.1 AMI Sodium A and AMI Sodium P
A new measuring cycle always starts when the 6-way valve [A] is
switched to the next programmed sample stream.
NOTICE: The following parameters are only available if the AMI
Sample Sequencer is set to the mode <Internal>.
Cycle time The time of switch over between the sample streams is defined as
-cycle time-. The cycle time includes the “Flush Time” and the mea-
suring time of the active sample line.
The measuring time can not be set, but can be calculated as fol-
lows:
Measuring time = “Cycle Time” - “Flush Time” + “Valid After”
The -cycle time- can be set individually for each sample line in 5
min steps from 5 min to 600 min. A sample line is deactivated if the
cycle time is set to 0 min.
Flush Time The parameter -Flush Time- defines how long the measuring cell of
the AMI Sodium A or an AMI Sodium P is flushed with the active
sample before the measurement starts. (see 5.1 Sequence, p. 60)
Valid After The parameter -Valid After- defines the remaining measuring time
of the sample stream x after the 6-way valve has switched to the
next sample stream (see 5.1 Sequence, p. 60).
A
B
C
D
E
Sample stream 1 on hold
Sample stream 2 on hold
Sample stream 1, high conc.
Sample stream 2, low conc.
Measuring signal
F
G
H
I
Cycle time
Flush time
Measuring time
Valid after
ppb
Time
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
G
I
G
IH
C
DE
F
HI
GHI
A
B