Mycom S CPM 153
6 Start-up
Hauser
25
6
Start-up
6.1
Installation and function inspection
#
Warning!
Before power-up, make sure there is no danger to the measuring point. Uncontrolled
actuated pumps, valves or similar could lead to damage to instruments.
"
Caution!
•
Before switching on, check all the connections again for correctness.
•
Make sure that the pH or redox electrode and the temperature sensor are in the
medium or in a buffer solution, otherwise no plausible measured value can be
displayed.
•
Make sure also the connection check is carried out (see Chap. 4.3).
6.2
Switching on the measuring device
Before first start-up, make sure you understand how to operate the transmitter. You
should make particular reference to Chapters 1 ("Safety instructions") and 5
("Operation").
First start-up
On first start-up, the instrument starts automatically with the Quick Setup menu. This
asks you about the most important instrument settings. After you close the menu, the
instrument is ready for use and measurement in its standard configuration.
!
Note!
•
You must completely run through the Quick Setup menu. If you do not, the instrument
will not be operational. If you interrupt Quick Setup, it will start again the next time you
start it up until
all
the menu options have been processed and completed.
•
For parameter setting, you have to enter the specialist code (default setting 0000).
6.3
Special features for measurement with glass-free
IsFET sensor
Switch-on behaviour
A closed control loop is created once the measuring system is switched on. During this
time (approx. 5-8 minutes), the measured value adjusts to the real value. This settling
behaviour occurs each time the liquid film between the pH-sensitive semiconductor and
the reference lead is interrupted (e.g. caused by dry storage or intensive cleaning with
compressed air). The settling time in question depends on how long the interruption
lasts.
Sensitivity to light
Like all semiconductor elements, the IsFET chip is sensitive to light (measured value
fluctuations). However only intense direct illumination impinges on the measuring value.
For this reason, avoid direct exposure to sunlight during calibration. Normal ambient
light does not affect measurement.
