LISST - 25 User’s Guide
9
2.3
Field Deployment Procedure
Introduction
This section is designed to introduce the procedures required for
deploying the LISST-25X. It gives step-by-step instructions to setup
and deploy the instrument in the field. The steps presented here
assume that the user has learned the basic operating procedures
covered in the preceding Getting Started section.
Step 1: Check
Battery voltage and
replace if required
Prior to starting a field experiment, check the battery voltage by
using the DB command. The battery voltage will be printed to the
screen. The batteries are mounted to a single card that can be
accessed by removing the connector endcap. The connector endcap
is attached to the case using three #6-32 socket head cap screws. To
remove endcap, remove the three screws and gently remove the
endcap with a slight twisting motion. Be careful not to pull the wires
attached to the inside of endcap too far from the case.
Step 2: Replace
batteries
The batteries are mounted to a card. To replace the batteries, remove
the card by lifting on the white levers. The card should slide out.
Replace the four 9-volt batteries and re-insert the card. Make sure
the card fully engages the edge of the connector and that the white
levers are locked in to place. Standard Alkaline batteries are
recommended. Lithium 9V batteries can also be used to extend the
battery life.
Step 3: Re-install
the endcap
Clean and lightly grease the o-ring and the sealing surfaces of the
pressure cases. Carefully insert the cables into the case and press the
endcap on to the instrument making sure not to pinch any wires.
Replace the three #6-32 screws. The o-ring is a radial seal and is not
dependent on the screws. Therefore is not necessary to torque the
screws. The need only to be snug. Do not overtighten as the
stainless screws can damage the aluminum case if overtightened.
Step 4: Mount the
instrument
Mount the instrument to the frame or cage. For longer deployments,
it is recommend that the instrument be mounted horizontally. This
will keep the optical windows in a vertical orientation and thus
reduce biofouling.
