Commissioning TOCII CA72TOC
46 Endress+Hauser
6.3.15 Menu TEST - MEASUREMENT OFF
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Fig. 27: "Test" menu
Deactivates measuring operation. The MEASUREMENT OFF operating status is displayed. Select
this status to perform tests without triggering an alarm.
6.3.16 Two-channel: external changeover
The analyzer is equipped with one or two separate sample supply systems.
The current sample selected is controlled externally by signal input 8 (binary in 8).
Signal input 8 = 0 channel 1
Signal input 8 = 1 channel 2
If the analyzer is operated with one sample conditioning system, the operator must ensure that the
right sample is at the bypass when a channel switch is requested.
If the analyzer is operated with two sample conditioning systems, the solenoid valve MV6 is used
internally to switch the channels.
If the signal status at signal input 8 changes, the measuring cycle is terminated immediately and the
system immediately commences channel switchover.
If the "Operation" key is pressed during channel switchover, the process of switching channels is
aborted and the measuring cycle commences in the active channel. Conditioning of the analyzer to
the sample in the active channel is suppressed.
!
Note!
The measuring channel cannot be switched manually.
Settings for the graphic interface
You must enter the following parameters in the Range Data menu:
PROGRAMMING/SETTING/RANGE DATA:
SETTING
LISTS
PROGRAMMING
TEST
TEST OF INPUTS
TEST OF OUTPUTS
TEST FREQUENCY I/O
TEST COM2
MEASUREMENT OFF
Parameter Unit Description
SCALE CH1 mg TOC/l Use this function to enter the maximum concentration for channel 1
here. This value determines the scale end value for the graphic
interface.
SCALE CH2 mg TOC/l Use this function to enter the maximum concentration for channel 2
here. This value determines the scale end value for the graphic
interface.
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