Specifications
2
Preparation for Deployment
Task Completed?
If applicable, upload existing data in memory.
Perform preliminary processing / analysis of data to ensure you have uploaded all data, that data was not
corrupted in upload process, and that (if uploading converted data) instrument EEPROM was programmed
with correct calibration coefficients. If there is a problem with data, you can try to upload again now. Once
you record over data in next deployment, opportunity to correct any upload problem is gone.
Initialize memory to make entire memory available for recording.
If memory is not initialized, data will be stored after last recorded sample.
Calculate battery endurance to ensure sufficient power for intended sampling scheme.
See instrument manual for example calculations.
Calculate memory endurance to ensure sufficient memory for intended sampling scheme.
See instrument manual for example calculations.
Install fresh batteries.
Even if you think there is adequate battery capacity left for another deployment, cost of fresh batteries is
small price to pay to ensure successful deployment.
Establish setup / operating parameters.
1. Click Capture button in SEATERM and enter file name to record instrument setup, so you have
complete record of communication with instrument.
2. Set current date and time.
3. Establish setup / operating parameters.
4. If desired, set date and time for sampling to automatically begin.
5. Send Status command (DS or #iiDS) to verify and provide record of setup. **
6. Send Calibration Coefficients command (DC, #iiDC, DCAL, or #iiDCAL) to verify and provide
record of calibration coefficients. **
Get conductivity sensor ready for deployment:
Remove protective plugs that were placed in Anti-Foulant Device caps or remove Tygon tubing that was
looped end-to-end around conductivity cell to prevent dust / dirt from entering cell.
Note: Deploying instrument with protective plugs or looped Tygon tubing in place will prevent instrument
from measuring conductivity during deployment, and may destroy cell.
Install fresh AF24173 Anti-Foulant Devices for conductivity sensor.
Rate of anti-foul use varies greatly, depending on location and time of year. If you think there is adequate
capability remaining, and previous deployment(s) in this location and at this time of year back up that
assumption, you may not choose to replace Anti-Foulant Devices for every deployment. However, as for
batteries, cost of fresh Anti-Foulant Devices is small price to pay to ensure successful deployment.
For instrument with external pump (16plus, 16plus-IM, 19plus), verify that system plumbing is
correctly installed.
See instrument manual for configuration.
Start sampling (if you did not set up instrument with a delayed start command), or verify that
sampling has begun (if you set up instrument with a delayed start command).
1. Click Capture button in SEATERM and enter file name to record instrument setup, so you have a
complete record of communication with instrument.
2. If you did not set up instrument with a delayed start command, send command to start sampling.
3. Send Status command (DS or #iiDS) to verify and provide record that instrument is sampling. **
4. Send Send Last command (SL or #iiSL) to look at most recent sample and verify that output looks
reasonable (i.e., ambient temperature, zero conductivity, atmospheric pressure). **
5. If instrument has pressure sensor, record atmospheric pressure with barometer. You can use this
information during data processing to check and correct for pressure sensor drift, by comparing to
instruments pressure reading in air (from Step 4).
Note: For instrument with pump (external or integral), avoid running pump dry for extended period of
time.
If cable connectors or dummy plugs were unmated, reinstall cables or dummy plugs as described in
Application Note 57: I/O Connector Care and Installation.
Failure to correctly install cables may result in connector leaking, causing data errors as well as damage to
bulkhead connector.
Install mounting hardware on instrument.
Verify that hardware is secure.
** Note: Actual instrument command is dependent on communication interface and instrument.