Enter measurements from these steps into the table below. NOTE: the order of operations is important, make the measurements in the order of the steps presented below.
1: Is the starting position facing “mics up” or “mics down”?
Sensors mounted on ceilings and pole arms are typically “mics down.” Sensors mounted on walls start facing “mics up.” Note: measure heading for wall mounted sensors holding them flat before they are tilted and put on the wall.
“mics up” (see note)
2. Orientation based on the clock dial
Picture a clock dial on the top face of the sensor. The indoor sensor’s LED is on the top face near the 4-o’clock. The outdoor sensor has cable grip on the side of the box also near the 4-o’clock. When the sensor is turned upside down, look for the cable grip or LED, and that will be 4-o’clock on the clock dial.
3. Measure Heading Angle in Degrees
Measure heading angle in degrees with the compass aligned along the 6-o’clock -to- 12-o’clock line pointing in the direction of the 12-o’clock. A good quality digital compass reading may be used. Enter the value, 0-360 deg, in the table below.
4: Measure Pitch Angle
Every effort should be made to ensure the sensors are level. The pitch angle should be measured with a quality digital level (accurate to 0.1 deg). Align the level with the 2 microphones below 6 o-clock. A positive pitch angle means 9-o’clock is higher than 3-o’clock. Note: the level in the image shows positive 3.3 deg pitch.
5: Measure Roll Angle
Every effort should be made to ensure the sensors are level. Roll angle is measured by aligning the digital level with the microphones along the LED or cable grip side. A positive roll means 6-o’clock is higher than 12-o’clock. The digital level in the image is showing a positive pitch of 0.5 deg.
6: Enter Location ID or Pole ID
This is an optional entry for entering the unique identifier for the location the sensor is mounted.
7: Enter sensor height above ground
Using a laser ranger, measure the height of the sensor in meters (accurate to 2 decimal places).
8: Enter distance to next closest sensor
With a laser ranger, measure the distance to the next closest sensor in meters (accurate to 2 decimal places) and enter that sensor’s NodeID.
9: Live trigger test
When the installation and survey is finished, contact Databuoy to initiate a live trigger test. The live trigger test requires temporarily changing the detection settings on the sensors from the back office. When the settings are in, the installer should stand 10m away from the sensor in a known position (ie: 12 o’clock) and activate the slapstick. Databuoy will analyze the results to be sure the angles have been entered properly.
10: Take a photo!
When the installation is finished, take a photo of each node. Email to: firstname.lastname@example.org with the NodeID in the subject line.