CTD-N Technical Manual
P/N 95F-6000-00 (February 2017)
page 71
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
CTD-N Maintenance
To ensure your CTD-N continues to provide you with accurate data, you should inspect and clean
the instrument after each use. This section provides some inspection and cleaning recommenda-
tions and instructions on how to replace the battery pack.
Recommended Maintenance
Table 2.
Recommended Maintenance
User Maintenance
Item
TRDI Recommended Period
Housings/End Caps
Inspect for damage and replace as required.
Hardware (bolts,
nuts, washers, etc.)
Manufacturer recommends replacement after every deployment or
every at least each year. Damaged hardware should never be used.
O-rings
Manufacturer recommends replacement every time the instrument
is opened. Damaged O-rings should never be used.
Connector
Inspect for damage and replace as required. Damaged connectors
should never be used.
Conductivity Sensor
Fill with oil prior to each deployment. Manufacturer recommends
verification of reasonable performance before each deployment;
i.e. a reference comparison.
Temperature
Manufacturer recommends verification of reasonable performance
before each deployment; i.e. a reference comparison.
Pressure Sensor
Manufacturer recommends verification of reasonable performance
before each deployment; i.e. a reference comparison.
Oil
Manufacturer recommends filling oil with capillary tube before
every deployment.
Calibration*
Item
TRDI Recommended Period
Conductivity Sensor
Manufacturer recommends return every 1 to 2 years for Factory
calibration.
Temperature Sensor
Manufacturer recommends return every 1 to 2 years for Factory
calibration.
Pressure Sensor
Manufacturer recommends return every 1 to 2 years for Factory
calibration.