Installation Net Radiometer

Installation Net Radiometer

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Table of content:

  1. Before installation
  2. Installation Guide
  3. After installation
  4. Installations Examples

Before installation

In the case of self-installing we recommend to have clear:

The installation location in the greenhouse: Using vertical greenhouse pilars are the perfect structure to fix the net radiometer holder with magnets
Ensure 230v electricity availability for the CNv5 gateway.
Installation time: We recommend to install in the early morning (07:00 - 11:00h).

The Net Radiometer Kit Contains:

  1. CNv5 gateway
  2. Net Radiometer
  3. Air+ (connected by wire to the Net radiometer)
  4. Net Radiometer Holder
  5. Optional: Air+ holder or chair

Required installations tools:

  • UV resistant zip ties
  • Scissors: To cut zip ties.
  • socket wrench: to fasten the bolts.

Installation Guide

  1. Placement of the CNv5 gateway (Figure 1).
    1. Position the gateway within 250 m from the sensors.
    2. Position the gateway with a direct line of sight of the Sigrow devices.
    3. Position the gateway in an elevated position minimally 1 m above canopy.
    4. The centre will lit blue after connecting it to the power plug and when connecting with your Sigrow devices.
      5. Figure 1. CNv5 gateway that facilitates sensors 4G data transfer to the Sigrow cloud storage.
      Figure 1. CNv5 gateway that facilitates sensors 4G data transfer to the Sigrow cloud storage.
  2. Placement Net radiometer Holder.
    1. Attach the holder to a vertical greenhouse pillar
    2. Point the net radiometer holder to the south, south east, or south west.
    3. Place the holder to the pillar with the magnets (Figure 2).

Figure 2. Example of the Net radiometer holder attached to a vertical greenhouse pillar.
Figure 2. Example of the Net radiometer holder attached to a vertical greenhouse pillar.
  1. Placement Net Radiometer
    1. Insert the net radiometer inside the holder.
    2. Position the net radiometer correctly levelled (Figure 3).
      3. Figure 3. Example of positioning the bubble within the black circle for correct levelling of the Net radiometer.
      Figure 3. Example of positioning the bubble within the black circle for correct levelling of the Net radiometer.
    3. Position the net radiometer a minimum of 0.5 m above the head of the crop canopy.
    4. Minimise any shadowing effect from above greenhouse structures.
    5. Avoid placing the sensor directly above heating pipes.
    6. Use UV resistant zip ties to guide the yellow connecting wire between the net radiometer and Air+ (Figure 4).
      7. Figure 4. Net radiometer holder including the yellow wire connected by zip ties.
      Figure 4. Net radiometer holder including the yellow wire connected by zip ties.
  2. Placement Air+
    1. The Air+ must be placed a minimum of 10 cm above the crop canopy (Figure 5).
      2. Figure 5. Examples of the Air+ placement using a metal holder (A) or Sigrow Chair (B).
      Figure 5. Examples of the Air+ placement using a metal holder (A) or Sigrow Chair (B).
    2. To prevent water damaging no water should enter from the bottom of the Air+ (Figure 6).
      3. Figure 6. Air+ will be damaged with water will enter the bottom of the case.
      Figure 6. Air+ will be damaged with water will enter the bottom of the case.
  3. Note down the IDs of each Sigrow device and link the IDs to the corresponding experiment or location.
  4. Optional: Take quality pictures of the installation and share these with support@sigrow.com for a quality check.

After installation

Go to app.sigrow.com, login with your account have.
Recalibrated every 2 years.
Keep the absorber surface clean using water or alcohol and avoid water condensation onto the mount (Figure 7).
Figure 7. Illustration of snow, dust or water on the absorber surface which will negatively affect the precision of the measurements.
Figure 7. Illustration of snow, dust or water on the absorber surface which will negatively affect the precision of the measurements.
After correct installation of the Net radiometer you can expect measurements between -200 to 1000 W / m2 (Figure 8).
Figure 8. Typical net radiometer measurements during tight time, fully / partly cloudiness and during a clear sunny day.
Figure 8. Typical net radiometer measurements during tight time, fully / partly cloudiness and during a clear sunny day.

Installations Examples

  1. Greenhouse Tomato Grower
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  1. Greenhouse Gerbera Grower
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  1. Greenhouse Gerbera Grower
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