Dissolved Oxygen Node Assembly Repair Guide

Difficulty

Moderate

Steps

Time Required

                          1 - 2 hours

Sections

Dissolved Oxygen Node Assembly
20 steps

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Step 1

              Outside Enclosure and Solar Panel

Refer to steps 2-5, 6-7, and 20-21 in the Depth Sensor Node Enclosure Assembly to attach the solar panel to the node enclosure.
Use the same enclosure provided in the node enclosure assembly guide with the same cut out holes.

Refer to steps 2-5, 6-7, and 20-21 in the Depth Sensor Node Enclosure Assembly to attach the solar panel to the node enclosure.

Use the same enclosure provided in the node enclosure assembly guide with the same cut out holes.

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Step 2

              Temperature Board and Adapter

Locate the old style electrically isolated carrier board. If pins are soldered on, remove and solder on a 2 and 3 plug header or one 5-plug header.
Once the new attachments are soldered on, proceed to put the temperature circuit board into the connection holes. The black square of the circuit board should face towards the soldered attachments.
Cut wires to approximately 6 1/2 inches to allow enough length to secure the wires into the 5-plug header.
Refer to the temperature section of the wiring diagram when wiring the adapter.

Locate the old style electrically isolated carrier board. If pins are soldered on, remove and solder on a 2 and 3 plug header or one 5-plug header.

Once the new attachments are soldered on, proceed to put the temperature circuit board into the connection holes. The black square of the circuit board should face towards the soldered attachments.

Cut wires to approximately 6 1/2 inches to allow enough length to secure the wires into the 5-plug header.

Refer to the temperature section of the wiring diagram when wiring the adapter.

Step 3

              Dissolved Oxygen Board and Adapter

Locate the new style electrically isolated carrier board.
Locate the Dissolved Oxygen circuit board and place the board into the connection holes. The black square of the circuit board should face towards the pins.
Cut wires to approximately 6 1/2 inches to allow enough length to secure the wires into the 5-plug header.
Refer to the DO section of the wiring diagram when wiring the adapter.

Locate the new style electrically isolated carrier board.

Locate the Dissolved Oxygen circuit board and place the board into the connection holes. The black square of the circuit board should face towards the pins.

Refer to the DO section of the wiring diagram when wiring the adapter.

Step 4

              Cable Gland

Obtain the cable gland.
Screw the cable gland into the wall of the enclosure, through the large hole, as shown.

Obtain the cable gland.

Screw the cable gland into the wall of the enclosure, through the large hole, as shown.

Step 5

              Velcro Attachments

Insert velcro strips with soft sides inside of the enclosure in the following places
Attach velcro with rough side onto the back of the adapters.

Insert velcro strips with soft sides inside of the enclosure in the following places

Attach velcro with rough side onto the back of the adapters.

Step 6

              Wiring the sensors

Locate the Atlas DO sensor
Locate the Atlas PT-1000 Temperature Sensor
Obtain four 1.5-inch long standoffs and 4 1-inch long standoffs. Screw the standoffs together as shown, to make four 2.5-inch long standoffs
Thread the wires of the sensors into the cable gland. Proceed to screw the standoffs into the holes of the enclosure.

Locate the Atlas DO sensor

Locate the Atlas PT-1000 Temperature Sensor

Obtain four 1.5-inch long standoffs and 4 1-inch long standoffs. Screw the standoffs together as shown, to make four 2.5-inch long standoffs

Thread the wires of the sensors into the cable gland. Proceed to screw the standoffs into the holes of the enclosure.

Step 7

              Battery

Obtain one battery, 4 zip ties, foam, and a pair of scissors
Cut out two battery-sized pieces of foam
Sandwich the battery between the two pieces of foam and secure it using the zip-ties. Connect the zip-ties to make two extra long zip-ties

Obtain one battery, 4 zip ties, foam, and a pair of scissors

Cut out two battery-sized pieces of foam

Sandwich the battery between the two pieces of foam and secure it using the zip-ties. Connect the zip-ties to make two extra long zip-ties

Step 8

              Attaching GPS and Antenna to Modem

Obtain the cell module (modem), GPS, and antenna
Insert Super SIM card into cell module
Attach the GPS to the connection shown (grey wire)
Attach the antenna to the connection shown (black wire)

Obtain the cell module (modem), GPS, and antenna

Insert Super SIM card into cell module

Attach the GPS to the connection shown (grey wire)

Attach the antenna to the connection shown (black wire)

Step 9

              Adding Velcro to GPS and Antenna

Attach rough-sided velcro on the antenna and GPS as shown in the picture.

Attach rough-sided velcro on the antenna and GPS as shown in the picture.

Step 10

              Board

Obtain Open-Storm board and place 4 jumpers in the spots shown
Insert microSD card into board
Attach the cellular module onto the sensor node board in the appropriate place

Obtain Open-Storm board and place 4 jumpers in the spots shown

Insert microSD card into board

Attach the cellular module onto the sensor node board in the appropriate place

Step 11

              Assembling the Node Interior

Put the battery into the node enclosure between the area of the standoffs
Place the board with the modem and the GPS antenna onto the standoffs and GENTLY screw the board in place. Then stick the modem and GPS in the locations highlighted.
Stick the carrier boards onto the sides of the interior. Make sure to place the carrier in their respective location highlighted.
Follow the wiring diagram when wiring the carrier boards to the circuit board.

Put the battery into the node enclosure between the area of the standoffs

Place the board with the modem and the GPS antenna onto the standoffs and GENTLY screw the board in place. Then stick the modem and GPS in the locations highlighted.

Stick the carrier boards onto the sides of the interior. Make sure to place the carrier in their respective location highlighted.

Follow the wiring diagram when wiring the carrier boards to the circuit board.

Step 12

              Adjusting Solar Charger Potentiometer

Obtain USB power supply, plug into a laptop, and set output to 5.9V
Check the voltage with a voltmeter (you may have to set the power supply to ~5.8V for the voltmeter to read 5.9V)
Plug in the green terminal block from the power supply into the Open-Storm board solar port.
Confirm the solar charge LED is off.
Plug in a dead battery to the battery port. This step will not work with a charged battery
CAREFULLY turn the silver potentiometer next to the charge controller IC with a small flathead screw driver until the charge light turns on.
Although the screw has a phillip screw head, using a phillip screwdriver may damage the potentiometer. The hole in the center is too shallow for most screwdrivers. It is easier to use a flathead screwdriver!
Resource: 1. How to Select MPP Voltage on a Solar Charge Controller 2. Sunny Buddy Solar Charger V13 Hookup Guide

Obtain USB power supply, plug into a laptop, and set output to 5.9V

Check the voltage with a voltmeter (you may have to set the power supply to ~5.8V for the voltmeter to read 5.9V)

Plug in the green terminal block from the power supply into the Open-Storm board solar port.

Confirm the solar charge LED is off.

Plug in a dead battery to the battery port. This step will not work with a charged battery

CAREFULLY turn the silver potentiometer next to the charge controller IC with a small flathead screw driver until the charge light turns on.

Although the screw has a phillip screw head, using a phillip screwdriver may damage the potentiometer. The hole in the center is too shallow for most screwdrivers. It is easier to use a flathead screwdriver!

Resource: 1. How to Select MPP Voltage on a Solar Charge Controller 2. Sunny Buddy Solar Charger V13 Hookup Guide

Step 13

              Powering the Node

Plug in the battery as highlighted
Plug in the solar panel as highlighted
The lights of the two sensor circuit boards should turn on

Plug in the battery as highlighted

Plug in the solar panel as highlighted

The lights of the two sensor circuit boards should turn on

Step 14

              Applying Open-Storm and Node ID stickers

Apply the open-storm sticker to the side of the enclosure as shown
Apply the unique node ID sticker to the top as shown

Apply the open-storm sticker to the side of the enclosure as shown

Apply the unique node ID sticker to the top as shown

Step 15

              Node Handle

Refer to sections 24-28 of the Depth Sensor Node Assembly guide in constructing and attaching the handle to the node

Refer to sections 24-28 of the Depth Sensor Node Assembly guide in constructing and attaching the handle to the node

Step 16

              Node Structure

Locate a 5 foot long steel strut channel
Using U-bolts, attach the node handle to the strut channel as shown

Locate a 5 foot long steel strut channel

Using U-bolts, attach the node handle to the strut channel as shown

Step 17

              Node Structure pt. 2

Using a zip tie, tie both of the sensor’s cables together. Since the DO’s cable is longer, make a loop to shorten its length
Using hose clamps, secure the cables and the sensors along the struct channel

Using a zip tie, tie both of the sensor’s cables together. Since the DO’s cable is longer, make a loop to shorten its length

Using hose clamps, secure the cables and the sensors along the struct channel

Step 18

              Preparing the Lock

Follow Step 23 of the Depth Node Enclosure Assembly guide to set up the lock

Follow Step 23 of the Depth Node Enclosure Assembly guide to set up the lock

Step 19

              Finishing Touches

The sensor lights in the node should be turned on
Attach the lock to the side of the node
Make sure to twist the cable gland so that the wires are snug together

The sensor lights in the node should be turned on

Attach the lock to the side of the node

Make sure to twist the cable gland so that the wires are snug together

Step 20

              Troubleshooting

If the DO readings emit a reading of 0 mg/L then:
Make sure the DO circuit board is facing the correct orientation (refer to step 2)
Make sure that the jumper wires are connected correctly and securely. Likewise, check if the RX and TX wires are swapped.
Check the connection between the adapter cable and the housing of the DO sensor to see if it is tight and sealed.
Make sure there is adequate electrolyte solution in the cap of the DO sensor.
If the steps above fail, replace the DO sensor circuit board.
If the DO readings emit a reading of 100,000 mg/L then:
Replace the DO sensor circuit board.

If the DO readings emit a reading of 0 mg/L then:

Make sure the DO circuit board is facing the correct orientation (refer to step 2)

Make sure that the jumper wires are connected correctly and securely. Likewise, check if the RX and TX wires are swapped.

Check the connection between the adapter cable and the housing of the DO sensor to see if it is tight and sealed.

Make sure there is adequate electrolyte solution in the cap of the DO sensor.

If the steps above fail, replace the DO sensor circuit board.

If the DO readings emit a reading of 100,000 mg/L then:

Replace the DO sensor circuit board.

To reassemble your device, follow these instructions in reverse order.

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