Read Tn Sample Test - Hach BioTector B7000 User Manual

Read TN Sample Test

R E A D T N S M P L
1 < * S T A R T T E S T
2 S T O P T E S T
T I M E
P H A S E
X E N O N L A M P
N S I G
N R E F
S / R R A T I O
W A I T F O R
The purpose of this test is to simulate and test the TN sample reading cycle and to display the intensity
readings at both signal (SIG) and reference (REF) wavelengths.
In order to make a representative TN reading on the sample, BioTector must be stopped using the Finish &
Stop function in the Start Stop menu. If BioTector is stopped using Emergency Stop function, the liquid will be
discharged from the reactor directly without the completing of the oxidation process. As the discharged liquid
may be coming from various stages of the reaction (e.g. TIC phase, Base Oxidation phase, TOC phase etc.),
any sample reading carried out on such liquids may not be representative.
The test starts with the cell purge. The sample in oxidized sample catch-pot/cleaning vessel (OSCP) is
brought into the TN measuring cell and measured in the Dual Cell Photometer module. The Nitrogen Signal
(N SIG) and Nitrogen Reference (N REF) values are updated as soon as the readings are available. The
Signal and Reference ratio (S/R Ratio) is also displayed. Unlike the Read DI Water Reference test, the %
intensity values are not updated and only the default 0% intensity values are displayed. The sample
measurement is carried out the same way it is carried out in a normal reaction. When sample measurement is
completed, the system ends the test by purging the TN measuring cell.
1. Start Test. This function starts the Read TN Sample Test.
2. Stop Test. This function stops the Read TN Sample Test.
When escape key is pressed during the test, only STOP TEST is activated. The user can leave this menu
only when the test is stopped and escape key is pressed.
T E S T 0 9 : 1 7 : 2 8
1 6 s
S A M P L E
O F F
2 8 0
3 3 0
1 . 0 8
T E S T P H A S E
1 2 - 0 9 - 0 2
M E A S U R E
O N
1 4 0 0 0 0
1 3 0 0 0 0
T O C O M P L E T E
0 %
0 %
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