CS451/CS456 Submersible Pressure Transducer
20
8.5 Sample Number Command
An extended SDI-12 command is used to enter a sample number for the
M8!
and
C8!
commands. This command is in the form of
XCONFIG2=
nnn
!
, where
nnn
is the number of samples that will be measured to obtain the final output
value, which is an average of the samples taken. The integration time can be
derived by adding 2 seconds to the number of samples. For example, if
nnn
=
50, then 50 samples are averaged. The integration time for this process is 50
plus 2, or 52 seconds.
9. Maintenance
For all factory calibrations and repairs, customers must get an
RMA number. Customers must also properly fill out a
“Declaration of Hazardous Material and Decontamination” form
and comply with the requirements specified in it. Refer to the
page at the front of this manual for more information.
Campbell Scientific recommends that the CS451/CS456 be factory recalibrated
and checked every 24 months.
The CS451/CS456 has no user-serviceable parts. Cable can be damaged by
abrasion, rodents, sharp objects, twisting, crimping or crushing, and pulling.
Carefully handle the cable to avoid damage. If the cable is damaged, send the
sensor to Campbell Scientific for repairs.
Periodic evaluation of the desiccant is vital for keeping the vent tube dry. The
CS451/CS456 ships with the desiccant tube attached. To assess the
effectiveness of the desiccant, use one of the following:
•
Desiccant in the tube changes colo
u
r from orange to green when
the
drying power is lost.
Until August 2019, the CS451/CS456 used blue
desiccant that turned pink when it became saturated.
•
Enclosure Accessory Humidity Indicator Card changes from blue to
pink when the desiccant needs to be replaced.
9.1 Every Visit
•
Collect data.
•
Visually inspect wiring and physical conditions.
•
Check indicating desiccant or enclosure humidity indicator; service if
necessary.
•
Check battery condition (inspect physical appearance and use a keyboard
display or computer to view the battery voltage).
•
Check all sensor readings; adjust transducer offsets if necessary.
•
Check recent data.
NOTE
NOTE
