Difficulty
Easy
Steps
6
Time Required
30 minutes
Sections
1
- Concrete Bridge Mounted Depth Sensor Node
- 6 steps
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What you need
Step 1
Removing the U-brackets from the bridge mount
- Using an adjustable or socket wrench, remove the four 3/4" nuts and washers from the U-brackets attaching the long strut channel to the bridge.
- Hold the node and long strut channel securely to ensure that they do not fall during this process.
- Note: You do not have to remove the two 3/4" hex head screws and washers attaching the U-brackets to the long strut channel.
Using an adjustable or socket wrench, remove the four 3/4" nuts and washers from the U-brackets attaching the long strut channel to the bridge.
Hold the node and long strut channel securely to ensure that they do not fall during this process.
Note: You do not have to remove the two 3/4" hex head screws and washers attaching the U-brackets to the long strut channel.
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Step 2
Removing the old depth sensor node from the small strut channels
- These are the two small strut channels attaching the node to the long strut channel.
- Before removing any parts, rotate the long strut channel (still attached to the node) so that it is no longer over the water.
- Using a 1/2" adjustable or socket wrench, remove the four 1/2" hex head screws attaching the old node to the small strut channels.
- Be sure to remove the nuts and washers on the inside of the small strut channels as well. (Total: Four 1/2" hex head screws, four 1/2" nuts, and four washers)
These are the two small strut channels attaching the node to the long strut channel.
Before removing any parts, rotate the long strut channel (still attached to the node) so that it is no longer over the water.
Using a 1/2" adjustable or socket wrench, remove the four 1/2" hex head screws attaching the old node to the small strut channels.
Be sure to remove the nuts and washers on the inside of the small strut channels as well. (Total: Four 1/2" hex head screws, four 1/2" nuts, and four washers)
Step 3
Locking the new depth sensor node
- Obtain a new depth sensor node and attach a padlock to the new depth sensor node.
- Projects have set lock combinations. Please ask the lab for guidance.
Obtain a new depth sensor node and attach a padlock to the new depth sensor node.
Projects have set lock combinations. Please ask the lab for guidance.
Step 4
Attaching the new depth sensor node to the small strut channels
- This step will use the same 1/2" hex head screws, 1/2" nuts, and washers from the removal of the old depth sensor node.
- Using a rag (if handy), clean any dirt or debris off of all screws, nuts, washers, strut channels, etc. before attaching the new depth sensor node.
- Using a 1/2" adjustable or socket wrench, attach the new depth sensor node to the small strut channels with four 1/2" hex head screws, 1/2" nuts, and washers. Tighten and secure.
This step will use the same 1/2" hex head screws, 1/2" nuts, and washers from the removal of the old depth sensor node.
Using a rag (if handy), clean any dirt or debris off of all screws, nuts, washers, strut channels, etc. before attaching the new depth sensor node.
Using a 1/2" adjustable or socket wrench, attach the new depth sensor node to the small strut channels with four 1/2" hex head screws, 1/2" nuts, and washers. Tighten and secure.
Step 5
Attaching the U-brackets to the bridge mount
- This is what the bridge mount looks like before reattaching the long strut channel with the new depth sensor node.
- Line up and place the U-brackets, still attached to the long strut channel, onto the bridge mount.
- Once again, hold the node securely to ensure it does not fall while the U-brackets are being attached to the bridge mount.
- This step will use the same 3/4" nuts and washers from the first step.
- Using a 3/4" adjustable or socket wrench, secure the long strut channel and U-brackets to the bridge with the 3/4" nuts and washers. Tighten and secure.
This is what the bridge mount looks like before reattaching the long strut channel with the new depth sensor node.
Line up and place the U-brackets, still attached to the long strut channel, onto the bridge mount.
Once again, hold the node securely to ensure it does not fall while the U-brackets are being attached to the bridge mount.
This step will use the same 3/4" nuts and washers from the first step.
Using a 3/4" adjustable or socket wrench, secure the long strut channel and U-brackets to the bridge with the 3/4" nuts and washers. Tighten and secure.
Step 6
Measure and record the distance from the bottom of the depth sensor node to the bottom of the river
- Using a (weighted) tape measure, measure and record the distance from the bottom of the depth sensor node to the bottom of the river.
- The bottom of the depth sensor node is defined as the bottom of the sensor cone.
Using a (weighted) tape measure, measure and record the distance from the bottom of the depth sensor node to the bottom of the river.
The bottom of the depth sensor node is defined as the bottom of the sensor cone.
To reassemble your device, follow these instructions in reverse order.
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