A-96.250.671 / 070222
AMI Silica
Product Description
14
Measurement
cycle
The quantities of the reagents are precisely defined by a certain
number of rotations of the peristaltic pump. After the predefined
quantity of a reagent has been sucked from the container, the 6
-
way
valve is rotated to position 5, where sample from the photometer is
sucked into the loop [P]. With the sample in the tube the reagents are
pumped into the photometer.
The measurement of the sample is carried out as follows:
The sample flows via constant head through the photometer. If a
measuring cycle starts:
1
The sample inlet is closed by activation of the solenoid valve [C].
A zero measurement is performed.
2
6-way valve in position 1:
the reagent 1 is sucked from the container [J].
3
6-way valve in position 2:
the reagent 2 is sucked from the container [K].
4
6-way valve in position 5:
sample is sucked into the loop, the whole quantity of the reagents
is pushed into the photometer.
5
The reagents are mixed with the magnetic stirrer, the first reac
-
tion starts.
After 150 sec:
6
6-way valve in position 3:
the reagent 3 is sucked from the container [L].
7
6-way valve in position 5:
sample is sucked into the loop, the whole quantity of the reagent
is pushed into the photometer.
8
The reagents are mixed with the magnetic stirrer, the second re
-
action starts.
After 90 sec:
9
6-way valve in position 4:
the reagent 4 is sucked from the container [M].
10
6-way valve in position 5:
sample is sucked into the loop, the whole quantity of the reagent
is pushed into the photometer.
11
The reagents are mixed with the magnetic stirrer, the third reac
-
tion starts.
After 90 sec:
12
The sample measurement is performed.
13
The sample inlet is opened by deactivation of the solenoid valve.
The measuring cell of the photometer is flushed.
14
6-way valve in position 5:
The reagent inlet tube is flushed with sample.